Dr. Tamhane is a board-certified periodontist specializing in periodontal plastic surgery, gum grafts, dental implant therapy, and the management of oral inflammation. She is dedicated to improving her patients' oral health and providing optimal dental care. 

She grew up in the Bay Area and earned her Doctorate of Dental Surgery from the University of California, San Francisco (UCSF). She continued her dental education at UCSF, where she earned a Masters of Science in Oral and Craniofacial Sciences and a Certificate of Periodontology. She is a Diplomate of the American Board of Periodontology. Dr. Tamhane also continues to share knowledge with the next generation of dentists as a volunteer clinical professor at UCSF. She is a member of the American Academy of Periodontology, the American Dental Association, the California Dental Association, and the San Francisco Dental Society.

About Us

Formerly known as Birch Street Dental, our practice has grown with much love and support from our patients these past few years.  Through fortunate events,  we were able to work on a merge to benefit our need for a larger facility. 

Arch Dental Care's mission is to provide personalized, high-quality care on an as-needed or preventative basis. We have created a practice that we believe in and choose for our own family members.

We are a full-service family practice of dedicated, experienced dentists who believe in working with our patients to maintain and improve their health. We work together to serve your entire family for all of your dental needs in all stages of life. Our dentists believe in providing comprehensive dental care services to our patients in a friendly, relaxed atmosphere. We also believe in educating our patients as we work with them to achieve the best physical state possible.

Here at Arch Dental Care our team of doctors and specialists work together delivering excellent treatment to our patients. We believe that when the doctor speaks directly with the specialists, our team is able to deliver a better overall patient experience. Our dedicated team of professionals focusing on dental care is a key strength of Arch Dental Care.  

Our office believes in Go Green. All our forms and documents are digital and filled out online or iPad in effort to minimize paper waste and our x-rays are all digital as well. 

We are conveniently located close to route 101, just a few blocks from route 82 (El Camino Real) near the heart of Redwood City.

Click here for the map to our office.

Dr. James Kim was born and raised in a suburb of Boston, Massachusetts.  After completing his studies in biology and psychology at Boston College, he received his dental education and training at New York University College of Dentistry, where he also acquired a certification in Public Health.  After completing his studies, he began his dental career back in his hometown, spending several years in private practice, as well as spending much needed time back at home with family.  Life had different plans for James,  and he soon found himself in San Francisco where he plans to reside long term.

Raised by a family that stressed importance in conservative values and friendly, well-mannered interactions with others, Dr. Kim has translated these teachings to his relationship with his patients.  Dr. Kim had long sought to work in a practice in the Peninsula that would allow him to practice doing what he believes is in the best interest for his patients.  

Being a family oriented person, Dr. James spends much of his free time enjoying life with Michelle and their sons, Evan and Noah.  Outdoor living has been a great benefit for James and Michelle since their move out west.  Their hobbies include walks in parks with their beloved dog, Bailey, enjoying the wide variety of culinary treats San Francisco and the Peninsula have to offer, and the occasional winery excursion when time and weather permits.

Call Us: 650-368-5551

154 Arch Street  

Redwood City, CA 94062
P. 650-368-5551/650-365-3933
F. 650-368-9803
info@archdentalcare.com

James H. Kim, DDS

Neha Tamhane, DDS (Board-certified Periodontist)

Roger Lau, DDS (Board-certified Oral Surgeon)

Dr. Michelle Kim spent her youth in Atlanta, Georgia, completed her Bachelor of Science degree in cell molecular biology from the University of Michigan, and received her dental degree from the University of California San Francisco.  Upon graduating, she practiced general dentistry in Massachusetts, but relocated back to the Bay area in 2013 with her husband, James.  

Dr. Michelle is a member of the American Dental Association, the California Dental Association, and the San Mateo Dental Society.  She is dedicated to provide her patients with caring and comprehensive treatments that are based on conservative and preventive dentistry.  She truly loves practicing dentistry and always aspires to learn new techniques and practices to enhance patient care.

When she can find enough time off out of her busy schedule, Michelle enjoys traveling to various parts of the world, immersing herself in and being inspired by these new cultures. She also enjoys painting, yoga, spending time with her sons and the occasional baking.

Our Doctors

Michelle Y. Kim, DDS

Dr. Kieu was born and raised in Orange County. She earned her Bachelor of Science degree in Biology from the University of California, Los Angeles, where she graduated Magna Cum Laude. She then moved to Northern California to complete her dental training at the University of California, San Francisco.  Nominated by faculty, Dr. Kieu was awarded the Craig Memorial Scholarship by the Rho Rho Chapter of Omicron Kappa Upsilon (OKU), National Dental Honor Society, for outstanding scholarship and ethical character. 

After receiving her dental degree, Dr. Kieu worked as a general dentist in San Anselmo before starting her orthodontic residency at the University of the Pacific. Recognizing the importance of providing research-based treatment, she maintains her position as an Instructor of Orthodontics and works closely with the orthodontic Department Chair at UOP. 

Dr. Kieu is a board-certified orthodontist and an active member of the following professional associations: American Association of Orthodontists, California Society of Orthodontists, and Pacific Coast Society of Orthodontists. She also serves on the alumni committee for the Pacific Orthodontic Chapter of the Arthur A. Dugoni School of Dentistry Alumni Association. 

Dedicated to excellence and patient-centered care, Dr. Kieu is a compassionate orthodontist who strives to ensure that patients enjoy high-quality results. She looks forward to working with our dental team to help patients achieve healthy and beautiful smiles. 

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Tanya Zaghi, DDS (Endodontist)

Dr. Roger Lau, a native of the Bay Area, has emerged as a trailblazing oral surgeon committed to advancing the field. Graduating as valedictorian from San Leandro High School, he went on to achieve a B.S. in Biochemistry from UCLA, earning a place on the dean's honor list. He continued his educational journey at UCLA School of Dentistry, obtaining his DDS degree.

Dr. Lau's pursuit of excellence led him to New York City, where he completed dual oral and maxillofacial surgery internships at Montefiore Medical Center and Mount Sinai Hospital. This experience set the stage for his four-year residency at Allegheny Health Network, Pittsburgh, including a chief resident year. Under the tutelage of global experts, he mastered dental implants, sleep apnea surgery, and corrective jaw procedures.

A member of prestigious organizations like AAOMS and ACOMS, Dr. Lau's surgical prowess spans dental implants, facial trauma revision, and more. Beyond his professional achievements, he enjoys snowboarding and travel. Dr. Roger Lau's journey exemplifies a commitment to innovation, learning, and elevating oral surgery to new heights.

Katherine Kieu, DDS, MS (Board-certified Orthodontist)

​​​​​​​​​James H. Kim, DDS and Michelle Y. Kim, DDS

Dr. Zaghi provides specialty Endodontic care to patients requiring root canal treatment and Oral Microsurgery. She is skilled at all root canal procedures including basic root canal treatment to the most difficult root canal re-treatment cases for adults and children. Additionally, Dr. Zaghi is skilled at the most delicate microsurgery treatments of the root. She completed her Dental and Endodontic studies at UCSF where she researched studies investigating pain management and response of teeth to different stimuli.

Dr. Zaghi has a long list of awards and affiliations.  She is dedicated to providing the highest standard of care for her patients.

Dr. Zaghi has lived in the Bay Area for more than 40 years and practicing dentistry since 2006. She is married and has 2 children. On her free time she enjoys reading root canal journals, snowboarding, swimming, and watching her kids’ sporting events.