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General Dentist

Dr. Marc Valli

With a calm demeanor and gentle touch, Dr. Marc helps his patients feel at ease during their visit. He takes his time to talk with his patients, listen to their concerns and questions, and ensures that they have a great understanding of any dental concerns.

A native of Pittsburgh, PA, Dr. Marc attended college at Duquesne University, and then graduated from dental school at the University of Pittsburgh. He then completed a post-grad residency program at Jesse Brown VAMC in Chicago to receive advanced training in surgical and restorative dentistry.

Dr. Marc was drawn to a career in dentistry due to the ability to combine his artistic talents and interest in healthcare. He enjoys using his abilities to fix teeth and improve patient’s smiles, and is continually seeking opportunities to continue to learn and bring new ideas to the practice!

In his free time, Dr Marc enjoys spending time with his family, traveling, and doing various outdoor activities. He is also an avid sports fan, and enjoys following his favorite Pittsburgh sports teams!

General Dentist

Dr. Molly Valli

Dr. Molly is known for her gentle touch and her ability to make even the most nervous dental patient feel comfortable. She entered the dental field at the age of 15, assisting in an orthodontic office, and always knew she wanted to be a dentist because it combined her natural interest in math/science with the ability to work with people and fix things using her hands.

Dr. Molly is originally from Windham, NH. She earned her undergraduate degree from St. Michael’s College in VT and received her DMD from the University of Pittsburgh in 2013. This is also where Dr. Molly met Dr. Marc! Following dental school, Dr. Molly completed a general practice residency at Loyola University Medical Center in Chicago, where she received further training in all aspects of general dentistry. Dr. Molly enjoys getting to know her patients and working with them to select the best treatment options to improve their overall oral health.

The Vallis have two young boys, Jack and Logan. They love spending time as a family doing outdoor activities such as hiking, biking, and skiing. In her spare time, Dr. Molly can be found in the kitchen baking something delicious, usually while listening to an audiobook!

Our Patients Love Us Our Testimonials

See Why We Have 4.9 Stars With Over 350 Reviews!

The people at Smiles are very friendly and professional. They put lots of effort in developing a trusting relationship. They do not make you feel like you’ve been neglectful. They explain issues in layman’s terms and explain the options in a matter of fact way without pressuring you to make a decision. It’s actually a pleasant experience. I’ve actually kept up with my cleaning appointments and do not dread them. I highly recommend Smiles of Groton!

Patient

What a great office. Friendly staff and very competent and thorough dentists and dental hygienists. Absolutely no pain filling. 

Patient

I have always had a phobia when it comes to going to the dentist, but Smiles of Groton has helped me overcome that. Such wonderful staff from the time you walk in the door til you leave. Best dentist who put you at ease.

Patient

I had a fabulous experience today at Smiles. The staff is always friendly and they are exceptionally talented at dentistry. Thank you! 

 

Patient

I recently had a tooth filled by Dr. Molly. We are so lucky to have Smiles of Groton located in our town. Dr. Molly is absolutely fantastic. By far, one of the best dentists that I have had. She is intelligent, kind, explains everything that she is doing and just an overall amazing Dentist. Her assistant was great as well! Also, the entire Vibe of the office is great. You can tell employees like working at Smiles. Thanks, Dr. Molly. 

Patient

Everyone is so friendly and helpful. They don’t push unnecessary treatments. They are wonderful if you have any anxiety with the dentist. The front desk is super great and talks you step by step through everything and every charge. I’m so glad I switched over to Smiles.

Patient

I can’t say enough good things about Smiles of Groton. The staff is incredibly kind and attentive, making sure I feel comfortable every step of the way. The facility is modern and clean, which adds to the overall positive experience. Dr. Marc and Dr. Molly, along with their hygienists, are not only skilled but also genuinely care about their patients’ well-being. I always leave feeling well taken care of and confident in my dental health. I highly recommend this practice to anyone looking for exceptional dental care.

Patient

It is nice to be a patient at a professionally run dental practice. Courteous, knowledgeable people doing the right work.

Patient

Drs. Marc and Molly Valli and their staff are continuing the tradition of friendly and professional service established by Dr. Breen. The x-ray and diagnostic technology has been upgraded and is phenomenal. The office has been upgraded with air purifying systems. A very positive experience.

Patient

This is how every business should be run, very professional staff, very high tech dentistry, and very happy people!  I had to switch from my previous dentist and I am glad I found Smiles of Groton.  I had my first cleaning appointment with them and it was a pleasure to be there.

Patient

The Vallis are both excellent dentists, explain everything you need to know, use the latest technology and are gentle but purposeful. I never worry when I go in. I’ve had 2 crowns and a couple of cavities done. Easy! Best dentists from here to Worcester (where I used to go for care)!

Patient

I am a new patient and my first encounter/appt with Smiles of Groton was fantastic. Tawnya, the RDH, was so thorough and knowledgeable and very important to me, took the time to answer my questions without making me feel rushed. I also really appreciated (and had never experienced) the codiagnosis with Tawnya and Dr. Molly (who was amazing), and that part of my appointment was just as thorough.  All around, a lovely experience and I’m so happy and relieved to have had them recommended to me! 

Patient

Nobody likes going to the dentist but if you have to this is the place. Great staff. Easy in and out. Needed filling, painless and smooth.

Patient

By far one of the best experiences I have had at a dentist. The team was super welcoming, knowledgeable and prompt. I would highly recommend this practice- especially if you’re someone who typically hates going. They may just change your mind :)

Patient

Dr. Molly & the team at Smiles put this VERY nervous patient at ease for two fillings and a broken tooth. The weighted blanket was appreciated and the professionalism is impeccable. Thank you for your kindness and care!

 

Patient

Every single person I spoke to and met exceeded any expectation I could have for a dental office. I couldn’t appreciate the professional kindness I received more, and any future expectations of any other operation is probably ruined because of how great the experience was. Thank you! 

 

Patient

Going to the dentist can be very intimidating, but the Smiles of Groton team made my entire experience comfortable. I was a former patient of Dr. Molly, and I was excited to become her patient again, due to her kind demeanor and conservative and honest approach with her dentistry work. As a new patient to the practice, I was welcomed warmly, and everyone was so kind from the moment I walked in to the moment I walked out.

Patient

Even though there are dentist offices closer to my home that are in-network for me, this office is absolutely worth the drive. They made sure to submit quotes for any upcoming work, including my cleaning well before my initial visit, which helped ease any anxiety about whether insurance would cover it or not. The office is highly organized, and their clear communication about insurance coverage was a huge relief.

Patient

The best! Can’t say enough good things about Smiles of Groton. We have 4 kids and one of them is absolutely petrified of the dentist. However, everyone in the office is great and he’s starting to get over that fear, specifically from the great group of people that work there. Beyond that, it’s great to have such a great collective group of people so close to the school system where our kids go.

Patient

Absolutely best dental office I’ve ever been to! Super friendly and patient staff, very clean and positive experience overall. I hadn’t been to the dentist in almost 15 years and my hygienist was very pleasant and gentle. The receptionists made sure to clear things with me and my dental coverage so there was no surprise costs. I would give 10 stars !

Patient

They are professional, accommodating and compassionate! I would definitely recommend “Smiles of Groton”

Patient

There are many things I love about Smiles…the people, the music that they play while you are getting work done, the flexibility of scheduling, and their desire/willingness to ensure the best care without unneeded and expensive procedures. We love Smiles of Groton!

Patient

Smiles of Groton has been great for our whole family! Even after procedures that we’d prefer not to have (e.g., baby teeth pulled), we’re still smiling. Drs. Marc and Molly and the whole staff are friendly and efficient. Highly recommend.

Patient

We gladly welcome new patients! Feel free to give our office a call to ask about procedures, billing, or any other questions you may have. Our friendly front office team will be happy to help.

Call Us

Main Line:

(978) 448-5241

New Patients

(978) 449-4679

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Hours

  • Mon - 8:00am - 5:00pm
  • Tue - 7:00am - 4:00pm
  • Wed - 7:00am - 5:00pm
  • Thu - 7:00am - 4:00pm
  • Fri - Closed
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Address

292 Main St,
Groton, MA 01450

Directions

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