Sierra Dental And Orthodontics
Drew Williams, DMD:
Practice Profile Page


Drew Williams, DMD

Sierra Dental And Orthodontics
Denver (Tennyson), CO

Sierra Dental And Orthodontics
Denver (North River), CO














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


Clear aligners


Comprehensive orthodontics

Space maintainers

Palatal expanders


Interceptive orthodontics


Offers Even28 at-home™? No

Offers Even28 at-dentist™? No

Offers Invisalign®? Yes


Monday: 10:00 am to 7:00 pm

Tuesday: 7:00 am to 7:00 pm

Wednesday: 7:00 am to 7:00 pm

Thursday: 7:00 am to 7:00 pm

Friday: 7:00 am to 2:00 pm

Saturday: Closed

Sunday: Closed


Monday: 10:00 am to 6:00 pm

Tuesday: 10:00 am to 6:00 pm

Wednesday: 8:00 am to 4:00 pm

Thursday: 8:00 am to 4:00 pm

Friday: 8:00 am to 4:00 pm

Saturday: Closed

Sunday: Closed


Dr. Drew Williams, DMD





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

Dee P. from Denver, CO (Source: Yelp)


Dr. Williams is such a fantastic dentist. On my third visit to that wonderful office (25-Mar-2021), he performed an x-ray of my teeth. From the time he first greeted me while I was on the patient chair and up to completion, he showed me such an incredible amount of care and respect. He went out of his way to make sure all of my concerns and questions were thoroughly answered. I love how he is so approachable and very relaxed in his professional attitude. Every visit I make to that office, I genuinely am eager and thrilled to be greeted by him. A dentist like Dr. Williams is truly the Gold Standard of how, I personally believe, a dentist should deliver fantastic results all the while showing an extremely high degree of patient care and excellence. I also would like to give a gigantic shout out to Lindsay (she worked along side Dr. Williams). Her bubbly and easy going personality made me feel so welcome and very relaxed to be there. Like Dr. Williams, she was so professional and caring all the while making it look so natural and effortless. She was such a sweetheart to talk with. Lastly, I would like to mention the front desk staff. Every visit I had, they would greet me with a warm and friendly greeting. They are all super. Sierra Dental truly is my number provider for all my dental needs. I recommend SD to all who ask me about what dentistry is the best to visit here in Denver. THANK YOU Sierra Dental!!! Dave P.

Katie Naughton (Source: Google)


I had a wonderful experience! New patient at Sierra dental. They were able to get me in within a few days, too. Amy was my Hygienist and did a great job. Usually I have sensitive gums, but she took her time and it was a pain free cleaning! The conversation was friendly and I would highly recommend coming back.

Marsha M. from Columbus, OH (Source: Yelp)


I’d been long overdue for a cleaning and xrays, and magically a postcard arrived in the mail for Sierra Dental. I took it as a sign and made an appointment in August, during pandemic. Going to the dentist is a psychological experience, especially for people like me who have had bad experiences. With all of the stress from 2020, I’m happy to say that Sierra Dental didn’t add it the craziness. I had some old fillings refilled, which was totally painless and done properly – I didn’t need to return for adjustments! The office is clean, there’s parking right out front, and front desk staff is friendly. They also have in house insurance, that saved me a lot of money. Overall, I’d say Sierra is less of a warm and fuzzy place where everybody knows your name, but more of a modern, professional, and easy place to get the job done well for a reasonable price.

Isabelle K. from Arvada, CO (Source: Yelp)


I just had three molars extracted by Dr. Drew Williams yesterday. I’m terrified of dentists!!! Dr. Drew Williams is the BEST dentist I’ve ever been too!! He was very good administering novicaine shots!! It only hurt a little bit!! He took his time, and made it as comfortable as possible!! I never dreamed a dental visit could not be a tramatic experience. I highly recommend Dr. Drew Williams to any “dental chickens” out there!!!!

Pony Town (Source: Google)


Most state of the art dentist facility I’ve been to. Comfortable massaging chair, Netflix on a tv as you lay back, and sunglasses for when they are aiming a light towards your face. The offices are clean with tasteful decorations, and everyone was very friendly. My hygienist Robin was amazing and so thorough, and I gained invaluable insights into the condition of my teeth. I felt like I took a class, with my jaw as an example, as well as the always, for me anyway, satisfying experience of having the “calcified bio-matter” scraped off of my teeth. I was made aware of a terrible clenching habit I’d developed and am now mindfully interrupting it to prevent further damage. The doctor was great as well and showed interest in welcoming and educating me as a client. All in all an enjoyable experience and looking forward to my next preventative dental maintenance there

Carrie S. from Cheyenne, WY (Source: Yelp)


I had a crown pop off from flossing of all things. The crown was put on by another dentist who shall remain nameless. However, I called the office at Sierra Dental ar 730am and was offered an appointment right away. Freddie and Dr. Williams were so amazing and helpful. They made sure I was comfortable and ensured the crown was put on perfectly. Added bonus- Freddie showed me the cat channel on PlutoTV! Sierra Dental, Freddie and Dr. Williams made a huge difference in turning a painful event into a pleasant customer service experience. A+I had a crown pop off from flossing of all things. The crown was put on by another dentist who shall remain nameless. However, I called the office at Sierra Dental ar 730am and was offered an appointment right away. Freddie and Dr. Williams were so amazing and helpful. They made sure I was comfortable and ensured the crown was put on perfectly. Added bonus- Freddie showed me the cat channel on PlutoTV! Sierra Dental, Freddie and Dr. Williams made a huge difference in turning a painful event into a pleasant customer service experience. A+

Christina I. from Northwest, Denver, CO (Source: Yelp)


I recently switched to Sierra dental after leaving my previous dentist. What a difference! I wish I had switched sooner. The receptionist was friendly and I was brought in to a room quickly. Once in the room I was seated in a massaging Dental chair and was able to watch TV, both while sitting up and laying down during my procedure. I was even able to have full mouth radiographs without leaving the room. Everyone I interacted with was friendly and professional. I immediately noticed their attention to detail and appreciated the high-quality work they provided. I would definitely recommend Sierra Dental to anyone looking for a step above dental experience!

Carrie Reed (Source: Google)


James the dental hygienist here goes above and beyond with education and tailoring your visit based on concerns! My best experience w a dental office. and really appreciate how the dentist takes the time to explain any follow up care needed. I have really appreciated my consistency and care with Dr. Williams who always makes sure my questions get answered! Highly recommend this lovely gem of a dentist off Tennyson street!

Jesse Helm (Source: Google)


Great place, friendly staff, excellent work. This is coming from someone who really gets anxiety when the word “dentist” is even mentioned. Sure I still get sweaty in the chair, but these guys have done wonders to take it from full blown anxiety to just mild discomfort. Amie has been my hygienist the past few times and is just delightful.

Lauren L. from Arvada, CO (Source: Yelp)


I originally visited Sierra Dental as they are the closest dentist to my home, but I will be recommending them to friends all around Denver. The Tennyson office is clean and modern with TVs mounted on the walls and ceilings. Katherine, Liz, and Dr Finn were great to me during a cleaning appointment as well as Jose and Dr Williams later for fillings. Victoria’s smiling face at the front desk rounded off two great experiences. I appreciated that all the staff made me feel welcome, very comfortable, and gave great explanations through each step. Thank you all!

Kacy Jo (Source: Google)


I’ve been a patient at Sierra for a few years now. The staff is always so friendly and attentive. My most recent cleaning was done by JAMES AND HE IS AMAZING. He put lip balm on me before he even got started and I thought that was so thoughtful! He was really gentle and thorough and my teeth felt so fresh and so clean after. James also kept me laughing the entire appointment. I saw Dr. Williams for my exam as always and he’s simply the best dentist. He’s so great at explaining and educating me about my dental health and I trust him 100% with my teeth. One happy patient. See you guys in 6 months!

Mary Keilhauer (Source: Google)


I had not been to the dentist in a while and it was so easy! James did my cleaning and was gentle and explained everything really well – including checking my insurance and giving me the cost before doing anything. Between James and kerry there were no surprises and it was a good experience. Oh, they also have massaging chair and a tv on the ceiling for while you’re laying back which is cool

Chris Grenard (Source: Google)


I’m a relatively new patient, and I’ve had a very solid experience here! They did my one and only tooth repair, and it went fantastic. Zero pressure about cosmetic stuff, which is also great. My hygienist today, Robin, was also fantastic and I gotta say it was one of the leach ouchie teeth cleaning I’ve ever had. Recommended!

Christopher Zaleski (Source: Facebook)


Had a tooth filling today. Was in and out in 20 minutes. Shout out to Maria and Jennifer, who were friendly and made the experience better. No one likes people playing around with instruments in their mouths or getting a tooth drilled. But I got to watch Netflix to keep my mind off of it all. And in a matter of minutes it was over. Hopefully I don’t have to do that again, but if I do, I know it will be easy and painless.

Amber Martikke (Source: Google)


My hygienist this last visit was amazing. She really listened to my concerns and went to work on my stains that were bothering me. She answered all my questions, brought up my concerns as well as her own to the dentist to make sure he didn’t miss anything. I appreciated all her suggestions and even admitted if the office did not have the best tool for the job and said she would try to have it ordered before my next visit. I felt genuinely cared for and that my teeth were a passion, not just a chore.

Elizabeth Kuhn (Source: Google)


I am currently going through a personalized dental plan with Sierra Dental and I cannot speak more highly of the staff here, James Trexler in particular. He was so open and communicative about next steps, walking me through the current process, and really helped with any questions I had. Very grateful to have had the experience to work with James!

Aleksandra Jelic (Source: Google)


Sierra Dental is an excellent place! I am very anxious when going to the dentists office since I was a child, and on my first visit the staff and doctor Williams took the time to get to know me and to make my whole experience the best they can. That means a lot to me, and that is why I decided to keep on going to their office. Front desk as well, everyone else is very nice and kind. Doctor Williams and his assistant walked and talked me through the whole procedure that I had, which made me feel very comfortable and relaxed. He is very polite, nice and knowledgeable. They are using very modern technology to work with and help patients to better understand what they do.

Alexandra (Source: Google)


Honestly an incredible team of people. I moved to Denver only a couple years ago for school with no plans on staying past graduation. However, after deciding to stay, I had to find a dentist who would be a good fit for me and my needs (both dental and financial). I came into Sierra Dental with a slightly complicated dental issue in the form of temporary bridges that had been done by a dentist in my hometown, but Dr. Williams took it in stride and has been an amazing help when issues have come up without being judgmental. He and Robin have been amazing supports for me, and I’m so grateful for both of them, and the other wonderful people I have met in passing while at my appointments. I really was super lucky when I chose a dental office, and I highly recommend them to anyone looking for a primary dentist!

Dan W. from Chicago, IL (Source: Yelp)


Sierra Dental is a very organized ran office. After walking in, everything is simple and streamlined. Everyone I made contact with was extremely friendly. The best part about this office is it’s technologically ahead of all other offices, you can watch your favorite movie or show while getting your teeth cleaned! I will be going back not only for the great company but also to get my teeth checked out.

Kaytlyn P. from Denver, CO (Source: Yelp)


My experience at Sierra Dental was exceptional. I had broken a piece of my molar off in the middle of the night. I immediately panicked and went into Sierra the next morning. I was in a ton of pain and extremely stressed out. In a situation where a Dentist office could have easily taken advantage of the fact that it was an emergency and I HAD TO get it fixed Sierra Dental instead treated me with kindness and integrity. They immediately gave me their in house dental plan option, laid me back and reassured me I was in good hands. Within 5 minutes my entire day was turned around, they had my pain under control immediately, and next thing I knew I was wrapped up in the Netflix show playing above me. I nearly fell asleep from how relaxed I was. Thank you for your professionalism, care and most of all your integrity.

Tommy S. from Elk Grove Village, IL (Source: Yelp)


I’ve been a patient at Sierra Dental for almost a year now. I started Invisalign back in September, so it’s called for multiple appointments. Every time I visit Sierra Dental I’m greeted with a smile and everyone is so kind and welcoming. Dr. Williams is amazing. He makes an effort to get to know me as a person first, not as a patient. He is also super accommodating. He placed a temporary crown on my tooth last week, and it popped off yesterday. I called to make an appointment, but he wasn’t available in the morning. I was fine with that, I just needed it fixed before an important work meeting. Dr. Williams texted me an hour later, letting me know he worked his schedule around to be there and fix the crown himself! And he was able to see me even earlier. Amazing! Fast forward to that evening. My temp crown pops off AGAIN. I texted Dr. Williams to let him know, and he was able to see me within FIFTEEN MINUTES! Now that’s customer service. I am referring all my friends here. Great place and people!

Kevin Stroud (Source: Google)


Just a great experience all around. Dr Williams is incredibly kind, thorough, understanding and just makes you feel at ease. His dental assistant, Maria, is also extremely professional- you can tell her and the doctor have a great cadence and work well together. We are newer to Denver and finding a dentist is hard enough, but finding a great dentist is seemingly impossible… but he

Kyle Toedtli (Source: Google)


Dr. Williams and his team did a great job installing new veneers on my top two front teeth. I had chipped them about 20 years ago and just got used to temporary buildups since I was a kid. When I asked Dr. Williams about a more permanent option, he and his team walked me through the process and made it all very easy for me. I was given a temporary veneer for two weeks which also looked completely natural. The permanent veneers look amazing and I am glad I finally have a longer term solution for my chipped teeth. I also see Dr. Williams and his team for standard dentist work and they do a great job all around. Would recommend this office to anyone.

Joshua T. from Colorado Springs, CO (Source: Yelp)


Fabulous experience this morning with the Sierra Dental Team.  From the front desk attendant to the overseeing dentist, everyone took their time to make me feel welcome and comfortable. Everyone who operated on me did a great job and no discomfort was experienced (Including when the scrape at your gums which often is terrible). The facility it self is very nice and rather modern. You have the choice of TV shows to watch and listen to as you go through your procedure. The CHAIRS EVEN MASSAGE YOU.

Cami S. from Syosset, NY (Source: Yelp)


I am a new patient to Sierra Dental and I couldn’t be happier!  I have had great customer service with the front desk and Catherine the hygienist is wonderful!  She spent 2 hrs my first appointment explaining in detail everything she was seeing and doing.  She and Dr Williams both recommended that I get a deep root cleaning and they were both very thorough in how the procedure would go.  I even had a billing issue with my insurance and Victoria helped me every step of the way.  I am very pleased with my experience so far, and would recommend this office!

Dave C. from Granby, CO (Source: Yelp)


I had woefully mistreated my teeth and gums for years and scared to visit a new practice for fear of being shamed.  Dr. Williams and his team were extremely effective and caring to address necessary corrective dentistry and later moved to cosmetic changes.  I am proud to smile now and feel much more confident.  Some sessions were in excess of 2 hours but time flew by with their television and programming options.  Though Sierra is 30 minutes from my home, I will surely continue seeing them for the all of my dentistry needs!

Melissa L. from Chicago, IL (Source: Yelp)


Dr. Williams and his team are very welcoming, detailed and make going to the dentist a pleasant experience. With the new ownership they have also taken the office up a notch with more modern touches (both decor and equipment) that provides one a sense of wanting to be part of the Sierra Dental Family from the moment you walk into the door.

Irene Makapugay (Source: Google)


Great experience and very compassionate staff. My dental hygienist, Robin, and Dr. Williams were so wonderful and had great recommendations for my dental health. The building is very clean and even has massage chairs! They genuinely care for all the patients and I would definitely recommend coming here!

Christi Carlin (Source: Google)


Everyone here is amazing! I especially love Robin. She gave me such peace of mind and made me feel comfortable about the process of getting my teeth and gums healthy. I will be getting my wisdom teeth removed at 31 years old next month and can’t believe I’m going to say this, but I’m actually excited! Thanks to the Sierra dental team for genuinely caring for your patients.

Vincent Forget (Source: Facebook)


Went in for teeth whitening, and the service and results were AMAZING! The Zoom Whitening Procedure was super quick, got to relax with my own TV screen for Netflix and a massage chair. My family came with me and got to enjoy the great shops and cafes that the Tennyson area has to offer right on the same street. Highly recommend Sierra Dental and Orthodontics to everyone. The office experience is like no other. I mean, massage chairs, headphones while you watch your selection of Netflix, and the friendliest staff. You can even ask for a pillow and blanket during your procedure! Definitely recommend checking this place out for any dental needs. Thank you Dr. Drew & staff for the excellent care & expirience!

Isabella Dean (Source: Google)


I absolutely love this place and today was my second visit. Robin was professional, friendly, and took the time to explain everything she was doing as well as giving me lots of helpful information on how to best take care of my teeth. I highly recommend this place and am very impressed with their staff and level of customer care.

Natalie Vogel (Source: Facebook)


I’ve had nothing but wonderful experiences at Sierra Dental. Everyone at the office is super friendly and and they treat their patients like family. All my visits seem to go by so quick- I’ve never had to wait more than 5 minutes in the waiting room, not to mention watching Netflix while in the chair also makes the appt go by fast! I’ve also learned a lot because they take time to teach you all about your teeth and gums and how to keep them healthy. Dr. Williams is very knowledgeable and detail oriented and I would highly recommended him to anyone looking for a new dentist!! Love this place.

Christopher Zaleski (Source: Google)


Great experience today. Amy and Kerry were super friendly and helpful. Amy was funny and cheery at 7am during my regular cleaning visit. Kerry easily helped me schedule my next appointment with all of my schedule conflicts. A lot of folks don’t like the dentist, but I always feel comfortable and my mouth feels refreshed after my visit here.

Lisa Currier (Source: Google)


Such a wonderful experience from start to finish! James was friendly, thoughtful, and truly made for a pleasant experience. Dr. Williams was kind, thorough and I never felt pressured like I have at other dental practices. I’m new to Denver and was nervous at the prospect of finding a new dentist and I’m so glad I went with Sierra! I will definitely recommend to my friends and others in the area.

E Davis (Source: Google)


Clean. Modern office. Receptionists and h were knowledgeable and nice. State of the art equipment. This was my first visit. Referenced through my insurance provider list. I would recommend this dental office. Follow up from first appointment. I’ve been going to Sierra Dental for just over and have had the same impeccable service. My hygienist Robyn, does and excellent job and is so friendly. She even remembered our conversation 4 months ago. I would recommend this dental office to anyone who fussy or afraid of dental procedure s.