Doctors and health care providers in San Marino, CA
184 individual NPPES records list a practice address in San Marino, 425th of 812 California cities. The largest group is marriage & family therapist: 18, 10% of the city's records, against 6% across California. Page 4 of 4.
The 8 largest groups in San Marino
Source: CMS NPPES primary taxonomy, file of Aug 9, 2026.
San Marino in California
- Rank in California425th of 812 cities by records
- Share of the state<0.1% of California's records
- Specialties present25 or more taxonomy codes
- Top three groups22.8% of all records
Compared with California as a whole, San Marino has 6.5× the state's share of acupuncturist records.
Providers in San Marino, alphabetically
- Jennifer Shen, MDHospice and Palliative Medicine (Anesthesiology) Physician1386083723
- Tina Siu, DDSOrthodontics and Dentofacial Orthopedics Dentistry1013350602
- Megan Snyder-Grossman, M.F.T.Marriage & Family Therapist1689704561
- Myungjin Sohn, DDSGeneral Practice Dentistry1184351967
- David Speiser, MDObstetrics & Gynecology Physician1275552598
- Kenneth Stroud, D.D.S.General Practice Dentistry1780833319
- Daniel Suzuki, M.D.Psychiatry Physician1811025679
- Ellen Tan, MFT (CA)Marriage & Family Therapist1629438643
- Afton TaylorAnesthesiology Physician1073959268
- Linda TaylorSpeech-Language Pathologist1265843262
- Shendee Teng, M.D.Diagnostic Radiology Physician1003111642
- Khanh-Long Thai, PHARMD.Pharmacist1518754803
- Roberto Tostado, MDSpecialist1437328689
- Teresa Tostado, NPFamily Nurse Practitioner1922443373
- Robert Trujillo, PH.DClinical Psychologist1497833891
- Judy Tung, MHS, PA-CPhysician Assistant1669936894
- Christine Tzeng, COTAOccupational Therapy Assistant1174250153
- Karl Vontiehl, M.D.Allergy & Immunology Physician1013165869
- Elyse VrymoedMarriage & Family Therapist1629814520
- Tricia WaltonMarriage & Family Therapist1447412093
- John WearInternal Medicine Physician1255080198
- Grace WehbehPharmacist1962086983
- Richard Williams, MDInternal Medicine Physician1972577690
- Mary Won, L.C.S.W.Clinical Social Worker1073642500
- John Wong, M.D.Specialist1508109182
- Vina WoolcockMassage Therapist1831039742
- Tina Yang, MDFamily Medicine Physician1023082740
- Michillinda Yao-CoxSpeech-Language Pathologist1730025982
- Farzaneh YassamyDentist1942327291
- Cody Zhou, FNPFamily Nurse Practitioner1881422137
- Samuel Zia, M.D.Internal Medicine Physician1285973594
- Xingyi ZongRegistered Dietitian1962328831
- Stefan Zweig, D.D.S.Endodontics1598985624
- Susan Zweighaft, PTPhysical Therapist1477850055
The largest California cities
- Los Angeles69,537
- San Diego52,937
- San Francisco38,143
- Sacramento33,083
- San Jose20,925
How to read this directory
San Marino, California appears in the CMS National Plan and Provider Enumeration System with 184 registered healthcare providers spanning 25 or more distinct NUCC-taxonomy specialties. This count includes every individual clinician who has applied for an NPI and listed a practice address in San Marino - physicians, dentists, nurse practitioners, physician assistants, chiropractors, physical therapists, optometrists, psychologists, podiatrists, and every other credentialed provider type CMS tracks. It does not measure hospital beds, urgent-care capacity, or whether a given clinic is accepting new patients; it measures the pool of professionals with current NPI enrollment and a San Marino practice location on file. Every figure is drawn from the federal National Provider Identifier Registry (CMS NPPES) - more than 7 million providers, maintained since May 2007, with 2024 Medicare Part D data, and, according to CMS, can be searched, compared, and traced in our methodology.
The provider mix in San Marino is weighted toward Marriage & Family Therapist (18 clinicians, followed by Acupuncturist with 13 and Internal Medicine Physician with 11). That distribution reflects how NPPES records specialty: providers self-select a primary taxonomy code, so a family physician who also practices geriatrics will show up under whichever NUCC code they registered first. Relative to California's population, San Marino reports roughly 0.5 providers per 100,000 residents using the state-level denominator, which is a rough proxy rather than a precise access-to-care measurement; the true catchment area of any {cityName} clinician extends beyond the municipal boundary.
Of California's most common specialties, Behavior Technician is the most prominent one with no provider currently listing a San Marino practice address, a coverage gap San Marino patients typically fill by traveling to a larger nearby hub.
For San Marino patients, this directory is most useful as a starting shortlist. Important: PlainDoctor is a directory of publicly available CMS government data, not a review site, a ranking, or medical advice. NPPES data is self-reported and refreshed monthly; call the practice directly to confirm the provider is still there, accepts your insurance, and is taking new patients.
For informational purposes only; this directory is not medical advice and not a substitute for checking a license. See also: how to find a doctor and how to verify one.
Common questions
How many doctors are in San Marino, CA?
There are 184 registered healthcare providers in San Marino, CA, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.
What are the most common medical specialties in San Marino?
The most common specialties in San Marino are Marriage & Family Therapist, Acupuncturist, Internal Medicine Physician, Clinical Social Worker, Pharmacist. Marriage & Family Therapist has the most providers with 18.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov). Records are self-reported registrations, not licenses.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.