Oral Surgery Partners
Trent Westernoff, DMD, MD:
Practice Profile Page


Trent H. Westernoff, DMD, MD (Oral & maxillofacial surgeon)

Oral Surgery Partners
Redondo Beach, CA

Oral Surgery Partners
Manhattan Beach, CA














A list of major dental treatments which I offer my patients:

Tooth extraction

Dental implants

Wisdom tooth extraction

Bone graft

Orthodontic tooth exposure

Oral surgery

Reconstructive facial surgery

Facial trauma

Oral pathology

TMJ treatment

Sleep apnea therapy

Sedation dentistry


Offers Even28 at-home™? No

Offers Even28 at-dentist™? No

Offers Invisalign®? Yes


Monday: 7:30 am to 4:30 pm

Tuesday: 7:30 am to 4:30 pm

Wednesday: 7:30 am to 4:30 pm

Thursday: 7:30 am to 4:30 pm

Friday: 7:00 am to 3:30 pm

Saturday: 7:00 am to 12:00 pm (by appointment only)

Sunday: Closed





Check out what some of our happy patients are saying about us:

Keith K. from San Francisco, CA (Source: Yelp)


Week one of Covid lockdown I split an upper premolar clean in half, due to largish filling from my teen years. My regular dentist Was in for “an emergency” and the only one in office. He diagnosed it and sent me to Dr Trent Westernoff for removal and implant base installation. They squeezed me in that day, had great Covid protections, played great music while removing the tooth, followed up with phone calls, etc. I just went back for the implant base install portion. Again all went wonderfully (as possible given it’s dentistry not a massage). Their Covid care is just as prevalent. Dr. Trent has a great surgery manner. Highly recommended. Their whole surgery team is wonderful as well. Did not meet much of the office staff due to Covid but they had all the paperwork with insurance handled. I thought it would be painful, based on others stories about tooth removal, but really the broken tooth hurt more than either procedure.

Yathnely Davila (Source: Google)


Recently completed implant surgery at this office! Implant surgery seems like it should be hard and honestly quite scary, but at this office I have had such a headache free experience! Through and through even in a pandemic, the process is seem less and very comforting! Thank you!!

Kiki R. from Los Angeles, CA (Source: Yelp)


This place was great. And, let me say first that I definitely belong in the category of people who get freaked out when it comes to any kind of dental work. I was pretty nervous to get my wisdom teeth out – so nervous I’ve been putting it off for about ten years haha. But I had a coworker recommend Dr. Westernoff so I was hoping to have a good experience like the one she described. I’m so happy to report that the whole thing was actually quite easy! The receptionists are polite and welcoming, the office is clean and cute (and in a great location), and Dr. Westernoff himself is very pleasant and reassuring. He took time to answer all of my questions and didn’t make me feel rushed at all. He has a very calming and caring presence which really helped me on the day of the surgery. Also, I barely had any swelling and no bruising. I would absolutely recommend to anyone who needs work done! 🙂

Russ M. from Long Beach, CA (Source: Yelp)


Dr Westernoff is awesome.  I needed two implants, one upper and one lower, and both are perfect.  Dr Westernoff explains everything carefully and has the special X-rays and computer models to explain what your problems are, how the procedure will work, and what to expect.  Dr Westernoff and his staff keep you informed and comfortable in the super clean operating room.  They are careful to insure you have no pain, heal quickly and have the right medicines to prevent infections.  After each procedure, in the late afternoon Dr Westernoff calls you personally to check on how you are feeling.  If you need a doctor with the best tools and expert skill, who is easy to understand, and takes time to listen to your questions and concerns, go to Dr Westernoff.

Eric B. (Source: Google)


I did not have my wisdom teeth removed as a child and they’ve continued to be problematic for me as an adult. I had a lousy experience with a wisdom tooth extraction several years ago and when I learned needed another procedure, my dentist insisted that I see Dr. Westernoff. Despite my nerves, the front desk staff really helped me feel comfortable. I met with Dr. W to discuss my extraction and he arranged for a number of x-rays and scans. Using the scans, he walked me through the procedure and expertly answered all of my questions and concerns. We scheduled a wisdom tooth extraction for a few days later. On the day of the procedure, everything went according to plan. They brought me back right on time. Dr. W was suited up and ready for the procedure. He walked me through the plan again and when I was ready, the anesthesia was a breeze. I woke up comfortably and the experience was behind me. Everything healed incredibly fast and with limited discomfort. Dr. W took the time to follow up that evening and I had great news for him – I was feeling great! After that experience, I wouldn’t think about going to anyone else. I’ve already recommended Dr. W to a number of friends who are very anxious patients and I know they’ll be in great hands! Outstanding!

Gabriela V. from Canoga Park, CA (Source: Yelp)


Dr. Westernoff and his staff were absolutely amazing and so helpful. Originally I had a different appointment with a different office that was cancelled last minute. I was referred to his office by a friend and I am so glad I went, they were able to squeeze me into their schedule to remove a wisdom tooth that has caused me pain for quite some time. The financial advisor was so helpful and broke down my treatment plan, and expenses so well. Finally the assistants that helped me were so helpful and informative and made my experience so much better. I am humbled,grateful, and happy that Dr. Westernoff, josh, Victoria, and the nice lady that helped me in the front. (I forgot her name) They made me feel at home, and made me as comfortable as possible especially during these challenging times. Also he is so gentle and distracts you away from any pain. Will definitely refer many people to this practice!

Amy M. from Redondo Beach, CA (Source: Yelp)


We had a great experience with the staff and Dr. Westernoff.  My son’s procedure was slightly more complicated than normal, and everything went very well. I had previously taken him to another doctor who didnt want to do the procedure due to the complications.  Dr. Westernoff took the time to explain everything to us and investigated the problem through more scans, instead of just sending us away. We were prepared for a difficult recovery but he recovered quickly and had very little pain. We highly recommend this office!

Michelle C. from Thousand Oaks, CA (Source: Yelp)


I would never go anywhere else. Dr. Westernoff is amazing. I had zero pain and swelling after getting my wisdom teeth removed. My dentist noticed I had a small bump on my tongue during my last cleaning and told me to get it checked out because it was potentially cancerous. I was moving across the state the next day, and I called Redondo Oral Surgery to see if they happened to have any openings. Because I had been a patient before, Dr. Westernoff squeezed me in an hour later during his lunch break and performed a biopsy. I love this place and will 100% go back if I ever need oral surgery.

Cristi Quesada-Costa (Source: Google)


I had a tooth implant done by Dr. Westernoff, and admit I was incredibly nervous going in; however, his friendly relaxed manner was so soothing, calmed my nerves. The outcome was magnificent, felt more like a regular procedure. I am very happy w/ the final results. I would highly recommend him.

Marisa C. from Palos Verdes Peninsula, CA (Source: Yelp)


Everyone should come to Dr. Westernoff to get their wisdom teeth removed!! I had an incredible experience! I was extremely scared because this was my first time being put under and Dr. Westernoff and his team were amazing! They made me feel so comfortable! I went under General anesthesia and woke up within two and half hours. The healing process was great! Very little pain I didn’t take any pain meds I was prescribed besides the antibiotics.

Virginia B. from Palos Verdes Estates, CA (Source: Yelp)


What a professionally managed office. The staff is friendly and efficient. The wait time was minimal and Dr. Westernoff has such a great manner. He always takes his time with me – never rushed or brisk. He explains everything, responds to questions and concerns and I always leave feeling good about the interaction. The day he did the surgical implant, he and his staff were on time, efficient and caring about my comfort. I’d never had that procedure and was anxious about it. He was comforting and the procedure itself went so much quicker then I thought. The healing afterward was straight forward and my fears were unfounded. I heavily recommend him and his office.

John Perkey (Source: Google)


Just great! They took me on a sort of emergency basis (referral from my regular dentist) and got the tooth extracted almost before I realized they had started. After a few minutes in my mouth, I asked them if there were going to be able to get it out or not, and he said, it’s already out, we are just cleaning up. I was amazed. I highly recommend them. John Perkey

Lion L. from Los Angeles, CA (Source: Yelp)


Dr. Westernoff is a knowledgeable and skilled oral surgeon.  I had my wisdom teeth removed two days ago, surprisingly I had no swelling and only minor pain or discomfort. As soon as I took the pain medications recommended by Dr., my pain went away.  I suffered no complications after the surgery so far, and the overall experience was great. Although I am a little  bit nervous of recovery phase, I know I am in good hand. I strongly recommend Dr. Westernoff. He called me in the evening of my surgery date, checking on me to see if everything was ok.

Meli P. from Long Beach, CA (Source: Yelp)


All of the staff here are so friendly and they work well together as a cohesive team. I was referred to Dr. Westernoff by a family friend for wisdom teeth extraction (all four teeth) and he did an excellent job talking me through my options during the consultation. The surgery also went smoothly. The staff helped me through my nervousness and when I woke up I was in no pain. I was even able to go to work the next day with just a little bit of pain after talking for a while. I was fully recovered from the pain after about a week with no swelling. They really know what they are doing here. They give you a thorough list of instructions on how to take care of yourself after surgery and the receptionists and Dr. Westernoff are available to take your call if you have any questions. They even give you chapstick (for the dryness that ensues after fasting) and an ice pack wrap for your jaw which my sister, who had a bad experience elsewhere with her wisdom teeth, was jealous of. I would recommend Redondo Oral Surgery to anyone needing a wisdom tooth extraction. My mom, who was my ride home, also approves of the great service from the staff (and she has my two older sisters’ experiences to compare to)

Gabrielle Q. from Charter Township of Clinton, MI (Source: Yelp)


What can I say about this place besides the fact that they are wonderful! You’re greeted by smiles and friendly faces and once you’re seated, you get to see the doctor pretty quickly with hardly a wait. I had to have my bottom wisdom teeth out, and Dr. Westernoff explained everything in full detail to me, about the extraction process and recovery. I was not nervous at all, and the kindness from the entire staff just made me feel comfortable and confident. I was put to sleep for my surgery, and woke up without feeling super groggy, and the recovery went so well. My cheeks were a bit puffy the first few days but I hardly had any pain, and I healed up within the week just fine. I’m so happy I went with Redondo oral surgery and I will definitely recommend them to anyone!

Justine L. from Manhattan, NY (Source: Yelp)


If I could rate my experience with Redondo Oral Surgery I would give it a 100 out of 10. The team and staff are beyond amazing and helpful. The office is very clean, efficient and everyone is so friendly and welcoming! I was referred there by my amazing dentist to have my wisdom teeth removal done. I have never been under anesthesia and never had surgery so I was very nervous and anxious. When I met Dr. Westernoff he was so calm, friendly, and informative which eased me into the process. The day of my procedure they made me so comfortable and worry free the entire time leading up to the procedure. The procedure was quick and I hardly had any pain after. They are undoubtedly meticulous and safe with everything. Payment was handled easily and all process was so smooth even after my surgery. They provide you with all the tools, detailed directions, and care needed after which is great! A week later I came back and everything with my teeth were fine and healing great! When people say they are scared to go the dentist they should definitely consider making the trip out to see the team and Dr. Westernoff as it is probably the BEST experience you will have at any dentist office. Would recommend to anyone needed teeth work done!

Monique Bottene (Source: Google)


I give Redondo Oral Surgery the highest rating for their extremely professional and caring practices. My ten year old daughter was very nervous going in for a tooth extraction and Dr. Westernoff made her feel so at ease and was so caring and gracious to her that the process was stress free and was over before she knew it. They are true professionals in the way they operate their business in all aspects including front office, patient education and surgery. I highly recommend them oral surgery.

Alec Pacheco (Source: Google)


Recently had to get two wisdom teeth out ( one of which was severely impacted and a “trouble tooth” described by my dentist ) so i was referred to this place . Unfortunately due to a unrelated medical condition i could not go under general anesthesia , however DDS MD Joshua Wohlgemuth assured me that he could do it with local anesthesia and nitrous oxide. He was definitely right and had me in and out of surgery within like a hour and a half with limited swelling and pain . The staff here was helpful and kind and 10/10 would come back if i need any oral surgery in the future . If you need a oral surgeon def check this place out . Thanks again guys for the care

Eric B. from Manhattan Beach, CA (Source: Yelp)


I did not have my wisdom teeth removed as a child and they’ve continued to be problematic for me as an adult. I had a lousy experience with a wisdom tooth extraction several years ago and when I learned needed another procedure, my dentist insisted that I see Dr. Westernoff. Despite my nerves, the front desk staff really helped me feel comfortable. I met with Dr. W to discuss my extraction and he arranged for a number of x-rays and scans. Using the scans, he walked me through the procedure and expertly answered all of my questions and concerns. We scheduled a wisdom tooth extraction for a few days later. On the day of the procedure, everything went according to plan. They brought me back right on time. Dr. W was suited up and ready for the procedure. He walked me through the plan again and when I was ready, the anesthesia was a breeze. I woke up comfortably and the experience was behind me. Everything healed incredibly fast and with limited discomfort. Dr. W took the time to follow up that evening and I had great news for him – I was feeling great! After that experience, I wouldn’t think about going to anyone else. I’ve already recommended Dr. W to a number of friends who are very anxious patients and I know they’ll be in great hands! Outstanding!

Lopez G. from Bell Gardens, CA (Source: Yelp)


This was my first visit and the service was excellent. Although the waiting area is a bit small, I didn’t wait very long. Dr. Westernoff and his assisting staff are very professional,attentive and efficient. I was really nervous, but that staff did their best to make me feel comfortable. Later on the day Dr. Westernoff called me to follow up on how I was feeling and wanted to make sure I followed up right away with my General Dentist.  Definitely would recommend this office.

Linda B. from Torrance, CA (Source: Yelp)


After getting unclear information from 2 of our family dentists we came to Dr Westernof for some guidance. He listened to our concerns and and gave us the information we needed to decide how to move forward with my husbands complicated dental needs. He is extremely knowledgeable but also has a chair-side manner that immediately puts you at ease. We would not hesitate to recommend him.

Chris Lubba (Source: Google)


Dr. Westernoff and his team saw a friend of mine very last minute over the Christmas holiday, Christmas Eve to be exact. My friend had a few things that needed care very soon and they scheduled him for surgery first thing on December 26. I even had to call Dr. Westernoff on Christmas and he gave me his personal cell if anything else come up. Very professional and helpful and my friend is doing well. Thanks to the entire team! Don’t hesitate use this team!

Mia S. from Hermosa Beach, CA (Source: Yelp)


I took my mom here based on referral. We traveled all the way from Irvine to see Dr. Westernoff. My mom who is 65 needed to get a wisdom tooth out. The receptionist accommodated us last minute. My mom was simply amazed with Dr. Westernoff’s skills and abilities. He was very thorough with the consult before the extraction and the post op care. My mom could not believe how painless the procedure was. She could not stop raving about him in the car and how good he was. I was so happy my mom had a great experience. Thank you Redondo Oral Surgery!

John M. from Los Angeles, CA (Source: Yelp)


I had a very pleasant experience at Redondo, which for me is not typical when having dental work done.  The doc was professional and put me at ease immediately.  The staff was top-notch, getting me an appointment in a timely manner, not making me wait before going in, and working through my insurance with zero headaches.  And the results look very nice – I’ve always been embarrassed with my smile, but now I think it looks perfect!

John U. from Hermosa Beach, CA (Source: Yelp)


I was dumb enough to crack a tooth really bad but Dr. Westernoff and the staff got me in to see them. The process was seem less. Check in was friendly and fast. Dr. Westernoff was very clear and profession. I felt very comfortable. After surgery they called to check on me and they were very concerned. I had such a good experience I recommend two other people

Sara J. from Wilmington, Los Angeles, CA (Source: Yelp)


Dr. Westernoff was beyond wonderful!! He was so kind and really took his time explaining to my son who was really nervous about his procedure. He is very knowledgeable and has a great staff…all were very comforting. I knew my son Iwas in good hands!! I highly recommend this office. My son had all 4 wisdom teeth removed and had very little to no swelling. He tells me he remembers giggling talking to Dr. Westernoff and the next thing he knew he was done! This picture was taken the next morning . Thank you so much from Sammy he said your awesome and cool doctor!!!

Hayhay C. from Los Angeles, CA (Source: Yelp)


I got an implant from Dr.Westernoff and it was the best dental surgery experience that I’ve had! He explained everything very nicely, and nurses were very kind, answering all questions right before my surgery. I always felt very welcomed every single visit that I had, and most importantly I love the result of his surgery. No pain during or after the operation and everything is perfect! He even wrote letter and prepared materials for my crown since I’m leaving LA soon. Thank you so much! Highly recommended to anyone!

Rich Harik (Source: Google)


I broke a tooth eating an olive that was supposed to be pit-less. My doctor was able to get me an an appointment with ROS the same day. I was anticipating lots of pain and discomfort after having a molar pulled out. The tooth removal as well as the recovery were pain free. Unbelievable!

Polly K. from Manhattan Beach, CA (Source: Yelp)


I highly recommend Dr. Westernoff! He was very gentle and my recovery went great. Grace made it such a smooth transition with finance and smiled the whole time 🙂 Jamie, the surgical tech, was so comforting before I went under anesthesia and when I woke up. I can’t thank Redondo oral surgery enough!

Suzy R. from Redondo Beach, CA (Source: Yelp)


Dr. Westernoff removed my mandibular tori, which were almost “kissing”.   The entire experience was absolutely wonderful.  I felt in such good hands the whole time.  Dr. Westernoff and everyone at Redondo Oral Surgery is kind, gentle, caring and professional. The place is amazing, the very best care and equipment. I’m SO happy, and SO thankful for Dr. Westernoff and Redondo Oral Surgery!!  Highly recommended!!!

Kristie J. from Nevada (Source: Yelp)


Best experience, adult wisdom tooth extraction (impacted teeth).  My boyfriend was so worried about getting his teeth out.  Almost 35 and he’s been dreading doing it.  After reading some reviews online and calling this place, he finally scheduled it.  He had terribly impacted wisdom teeth but the dentist put him at ease.  We went in for his consultation and immediately after he got his teeth out.  This place only had him under anesthesia for under 45 minutes which was a stark contrast to mine in which I was out for much longer.  I took care of my boyfriend during his recovery which really after 2 days he was doing really well.  The doctor called and texted him the day after and a few days after to follow up after the procedure.  One week after his extraction he went in for his check up and everything looked great.  The doctors really care here and they are very good at what they do.  My boyfriend had a speedy recovery and cant recommend this place enough.

Kelly O. from Hermosa Beach, Los Angeles, CA (Source: Yelp)


I can’t say enough about what a great experience I had with Dr. Westernoff! I previously had a bad experience with a different oral surgeon, so was nervous/dreading having to get one last wisdom tooth removed when I was referred to Dr. Westernoff. My tooth extraction was complicated but Dr. Westernoff was incredibly thorough in explaining the situation and procedure required and did a fantastic job. I barely had any swelling and bounced back to fairly normal activity within 24 hours. He personally called me a few hours after the surgery to check in and answer any questions. The rest of the staff was also incredible and helped to make the entire experience as easy as possible. Fortunately I have run out of wisdom teeth to have pulled, but if I ever have any other oral surgeon needs, Dr. Westernoff will be my first call.

Mo Mac (Source: Google)


During my routine cleaning with my primary care dentist, we discovered a tooth was a bit loose. The x-ray showed bone loss around this tooth, so i was referred to Redondo Oral Surgery ~ Dr. Westernoff for further evaluation. The day of my appointment, it was a very short wait to see the doctor. Dr. Westernoff reviewed my x-ray and we went over my medical history. Dr. Westernoff then explained the treatment plan and within 5 minutes I was in surgery! This was a painless procedure from beginning to end. After surgery, surgical team member Rafael went over all post-op instructions and shared so much more about dental healthcare techniques and practices. Good stuff! Many things I did not know. As I was leaving, Rafael mentioned the Pill Box pharmacy directly behind the dental office where I could fill my prescriptions. I was pleasantly surprised when the pharmacy said they could filled my order in 5 minutes, so i shopped for the prescribed over-the-counter mouthwash as well. This was really easy and I left with everything i needed for post-op care. I woke up this morning and noticed no swelling or soreness. I couldn’t believe it. I’m thinking the soreness will hit today. It is now 3:30pm on day 2 and still no pain. From beginning to end, no pain and a great patient experience. Many Thanks to Dr. Westernoff and the Redondo Oral Surgery staff, DaveMac

Khris R. from West Hollywood, CA (Source: Yelp)


Dr Westernoff and his staff took excellent care of me after a botched oral surgery (impacted wisdom teeth) from South Bay Dental. My mother recommended Dr. Westernoff and he turned what was a complete disaster into a serene experience. It was my first time being put under for surgery and he made me feel totally comfortable with the process. After the surgery I felt very little pain and followed his directions for care after. He really cares about his patients. He even personally called to check on me a few days after the surgery and was extremely thorough with post op care.  I recommend this place for anyone that has to get oral surgery!

Abi A. from Santa Monica, CA (Source: Yelp)


This place was nothing but helpful and courteous. My daughter came here because we were referred by her dentist. I would definitely recommend this oral surgeon. Pros -Friendly and informative staff. They were very welcoming, funny, and interacted with the kids -Very pleasant, pretty, and modern business -Actually got to do new patient paperwork before the appointment online which was super convenient -Dr on time. We didn’t wait long -We had to also see orthodontist as well and Dr walked himself upstairs to talk to him himself about my daughter -they have a separate room to talk about financials instead of giving it to you at the front desk -complimentary coffee and tea -big waterfall (lol makes me feel calm) Cons -parking (metered) -no baby changing table in bathroom (my baby did a #2) so that was a challenge


For more than 40 years, Redondo Oral Surgery has provided oral and maxillofacial surgery to help patients regain healthy, functional smiles. Our oral surgeons and team promote a friendly atmosphere and go above and beyond to help you feel comfortable and at ease during your appointment. Our office staff speaks Spanish and Japanese. Call or visit us today to schedule your consultation with Dr. Barry Johnsin, Dr. Trent Westernoff, or Dr. Martin Mardirosian, and learn more about oral and maxillofacial surgery in Redondo Beach, California, and the surrounding areas. We look forward to meeting you soon! Dr. Trent Westernoff is a board-certified oral and maxillofacial surgeon with seven years of extensive surgical experience. He graduated with honors when he received his bachelor’s degree at the University of California, Santa Barbara in 1994. In 1998, Dr. Westernoff completed his post-graduate degree, obtaining a doctorate in Dental Medicine at the Harvard School of Dental Medicine, with cum laude honors. During dental school, he became a US Army reservist and was commissioned as a captain on the USS Constitution. Wanting to pursue a profession in oral and maxillofacial surgery, Dr. Westernoff continued his education at the University of California, San Francisco (UCSF) residency program and the UCSF School of Medicine. During his six years at UCSF, he completed oral maxillofacial surgery training, obtained his medical degree (MD) and finished a year of general surgery training. In addition to his extensive education, Dr. Westernoff was activated and promoted to the rank of major in the US Army where he served for three years as full-time hospital staff at William Beaumont Army Medical Center. While there, he practiced full-scope oral and maxillofacial surgery. He was deployed in 2005 during Operation Iraqi Freedom and served at a Combat Support Hospital in Mosul, Iraq. Dr. Westernoff received a Meritorious Service Medal for his outstanding service while in Iraq. Dr. Westernoff completed board certification for both the American Board of Oral and Maxillofacial Surgery and National Dental Board of Anesthesiology, and he currently holds diplomate status in both organizations. After completing nine years in the US Army Ready Reserve and three years of active duty, Dr. Westernoff and his wife elected to move back home to Southern California, where they are raising their family and continuing their professional careers.