Meet Our Doctors
At our community-focused practice, your comfort & satisfaction come first. We look forward to meeting you soon & developing a relationship with you to build the bridge toward long-term trust & successful dental care.
General Dentists
Roy Lewis, DDS
For over 30 years, Dr. Lewis has refined his craft, earning a reputation for exceptional skill in restorations & surgical extractions. A graduate of Loma Linda University, he combines a deep understanding of general dentistry with a focus on precise, patient-centered care.
Within the practice, Dr. Lewis fosters a calm & welcoming environment, allowing patients to feel at ease while benefiting from his steady hand & keen attention to detail. His work reflects decades of experience, bringing functionality & confidence back to countless smiles.
Outside the office, Dr. Lewis channels his dedication to precision into his love for aviation. As a licensed pilot, he finds balance between his professional life & the skies, exemplifying his lifelong commitment to craftsmanship & excellence in every pursuit.
Prabhmehar Singh, DDS
Dr. Singh is a dedicated dentist who combines academic excellence with a commitment to a person-centered care model. Graduating summa cum laude honors from UC Berkeley in 2019, Dr. Singh went on to earn his Doctor of Dental Surgery (DDS) from UCLA in 2024, where he was recognized for his outstanding clinical skills & compassionate approach to patient care.
His passion lies in delivering personalized, high-quality dental care, with a focus on building lasting relationships with his patients. He believes that a great patient experience is as crucial as the technical aspects of dentistry, & he strives to make every visit comfortable & stress-free. His expertise spans a wide range of dental procedures, with a deep interest in veneers, clear aligners, & other cosmetic dentistry treatments that enhance both the function & aesthetics of his patients’ smiles.
Dr. Singh is dedicated to continuous learning, he actively pursues advanced training in veneers, clear aligners, & cosmetic dentistry, always staying ahead of the latest trends & techniques. His focus on utilizing modern technology ensures that his patients benefit from the most innovative & effective treatments available. By integrating the latest advancements, he enhances both the beauty & functionality of his patients’ smiles.
Outside the clinic, Dr. Singh enjoys honing his precision & strategy on the golf course, as well as engaging in a good game of chess, which reflects his thoughtful & strategic approach to both life & dentistry. His blend of skill, compassion, & dedication makes him a trusted partner in his patients’ oral health journeys.
Periodontists
Hoorshad Fathi Kelly PhD, DDS, MSc

Dr. Kelly lives in the San Ramon Valley with her husband & two children. She enjoys spending quality time with family & friends. She also enjoys hands-on activities like crafting & gardening & striving to live a healthy lifestyle.
Orthodontists
Richard D’Avanzo, DMD

Oral & Maxillofacial Surgeons
Shun Chien, DDS

Since relocating to the Bay Area, Dr. Chien has taken great pleasure in assisting his patients with painless teeth extractions, expert removal of wisdom teeth impactions, & restoring smiles with dental implants to enhance function & confidence. Recognizing that some patients may experience anxiety about dental procedures, Dr. Chien offers various sedation options to ensure their comfort & peace of mind.
He values collaboration with his dental colleagues to deliver the highest quality care to all patients. Dr. Chien is currently working towards achieving diplomate status with the American Board of Implantology, demonstrating his commitment to ongoing education & excellence in his practice.
Eric Osmolinski, DMD

Dr. Osmolinski is a motivated Oral & Maxillofacial Surgeon with extensive practical experience & has chosen to focus providing his services in Northern California only. He provides wide array of surgical service including sedation & general anesthesia, simple & complex extractions, placement of single & multiple dental implants, socket preservation, soft & hard tissue grafting procedures, diagnosis & biopsy of potential precancerous lesions, surgical management of facial trauma & life-threatening infections, orthognathic (Jaw) surgery on patients in active orthodontic treatment & treatment of temporomandibular joint disorders (TMD).
Catherine Suh, DMD

After high school, Dr. Suh fell in love with Boston, where she lived for more than a decade. She completed her undergraduate studies at Wellesley College & earned her dental degree from Tufts University School of Dental Medicine. Following a one-year research fellowship at The Forsyth Institute, she moved to San Francisco with her husband & has practiced there ever since.
Deeply committed to preventive care & public health education, Dr. Suh also served as Associate Dental Director at a Federally Qualified Health Center (FQHC) in the Bay Area. In this role, she supported a team of dedicated dental providers, improved patient access to care & upheld high clinical standards through quality control measures & thoughtful protocols that enhanced outcomes for every patient.
Outside the office, Dr. Suh enjoys practicing pilates & hiking with her family & two dogs.
