NPPES file of Aug 9, 2026

Doctors and health care providers in Portola Valley, CA

84 individual NPPES records list a practice address in Portola Valley, 511th of 812 California cities. The largest group is physical therapist: 8, 10% of the city's records, against 2% across California.

CMS NPPES registry, file of Aug 9, 2026 · method · Verify with CMS →

The 8 largest groups in Portola Valley

Source: CMS NPPES primary taxonomy, file of Aug 9, 2026.

Portola Valley in California

  • Rank in California511th of 812 cities by records
  • Share of the state<0.1% of California's records
  • Specialties present25 or more taxonomy codes
  • Top three groups22.6% of all records

Providers in Portola Valley, alphabetically

  1. Malathi Acharya, M.D.Integrative Medicine Physician1871671453
  2. Janet Andrews, DDSDentist1053703421
  3. Amy Babcock, PTPhysical Therapist1053394445
  4. Sueann Barsh, OTD, OTR/LOccupational Therapist1700762457
  5. Kristine BesioCommunity Health Worker1669110177
  6. Craig Brandman, M.D.Cardiovascular Disease Physician1295004687
  7. Deleys Brandman, M.DSpecialist1891927463
  8. Burton BrentPlastic Surgery Physician1073915039
  9. Eva BryerRegistered Nurse1932238730
  10. Eugene Butcher, M.D.Anatomic Pathology Physician1316342546
  11. Linda Callegari, N.P.Women's Health Nurse Practitioner1689945628
  12. Ingbritt ChristensenMarriage & Family Therapist1124991179
  13. Donald Coluzzi, DDSDentist1659611770
  14. Erika Demas, PTAPhysical Therapy Assistant1154799658
  15. Jocelyn Dunn, MDSurgery Physician1689684961
  16. Daniel Fay, DPTPhysical Therapist1518444298
  17. Sylvia Friedberg, M.D.Internal Medicine Physician1396886925
  18. Mackenzie Froeberg, MAMarriage & Family Therapist1760002398
  19. Andrew Fung, DPTPhysical Therapist1336474899
  20. Lisa Green, MOMT, MPT, ATCOrthopedic Physical Therapist1528193240
  21. Bradley Greenblott, M.D.Psychiatry Physician1114299864
  22. Bradley Greene, MDFacial Plastic Surgery Physician1811098379
  23. Kathryn Hallsten, M.D.Internal Medicine Physician1184750861
  24. Adam HardyBasic Emergency Medical Technician1780924290
  25. Anne HenzelOphthalmology Physician1942355953
  26. Rosemary Hintz, MFTMarriage & Family Therapist1689745630
  27. Ellen Hoffman, D.C.Chiropractor1417045279
  28. Leslie Hsu, M.D.Psychiatry Physician1699846725
  29. Haley Issichopoulos, MSM, PA-CMedical Physician Assistant1699288027
  30. Wilfred Jaeger, M.D.Health Educator1427340306
  31. Nile Jones, RNRegistered Nurse1720946049
  32. Courtney Jonson, L.AC.Acupuncturist1083748784
  33. Daniel Kaplan, RNRegistered Nurse1710586920
  34. Jessica Kassis, M.D.Obstetrics & Gynecology Physician1033394424
  35. Ann Kearney, MASpeech-Language Pathologist1306050448
  36. Kerry Kravitz, M.D.Psychiatry Physician1225132269
  37. Richard Laude, M.D.Psychiatry Physician1932243458
  38. Jamie Leach, D.D.S.Dentist1356764039
  39. Fariba Lessani, O.D.Optometrist1568512184
  40. Jia Li, LMFTMarriage & Family Therapist1861086670
  41. Meredith LierkCounselor1093669822
  42. Rebecca LongInternal Medicine Physician1639007172
  43. Joann Loulan, M.A.Marriage & Family Therapist1851596183
  44. Lawrence Masket, MDEmergency Medicine Physician1093893877
  45. Jarrod Maslin, PT, DPT, ATCPhysical Therapist1407308224
  46. Johanna Mayer, PHDPsychologist1114054335
  47. Carolyn McClain, M.D.Public Health & General Preventive Medicine Physician1649472929
  48. Karen Mittelstadt, LACAcupuncturist1538651872
  49. John Moore, D.C.Chiropractor1932200110
  50. Maxwell Moore, DCChiropractor1194325365

The largest California cities

  1. Los Angeles69,537
  2. San Diego52,937
  3. San Francisco38,143
  4. Sacramento33,083
  5. San Jose20,925

All of California →

How to read this directory

Portola Valley, California appears in the CMS National Plan and Provider Enumeration System with 84 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 Portola Valley - 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 Portola Valley 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 Portola Valley is weighted toward Physical Therapist (8 clinicians, followed by Internal Medicine Physician with 6 and Psychiatry Physician with 5). 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, Portola Valley reports roughly 0.2 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 Portola Valley practice address, a coverage gap Portola Valley patients typically fill by traveling to a larger nearby hub.

For Portola Valley 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 Portola Valley, CA?

There are 84 registered healthcare providers in Portola Valley, CA, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.

What are the most common medical specialties in Portola Valley?

The most common specialties in Portola Valley are Physical Therapist, Internal Medicine Physician, Psychiatry Physician, Marriage & Family Therapist, Chiropractor. Physical Therapist has the most providers with 8.

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.