NPPES file of Aug 9, 2026

Doctors and health care providers in California, MD

318 individual NPPES records list a practice address in California, 71st of 284 Maryland cities. The largest group is behavior technician: 113, 36% of the city's records, against 16% across Maryland. Page 7 of 7.

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

The 8 largest groups in California

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

California in Maryland

  • Rank in Maryland71st of 284 cities by records
  • Share of the state0.2% of Maryland's records
  • Specialties present25 or more taxonomy codes
  • Top three groups47.8% of all records

Compared with Maryland as a whole, California has 5.2× the state's share of behavior analyst records.

Providers in California, alphabetically

  1. Michelle Weisburgh, PHARMDPharmacist1922009612
  2. Ashley WelchBehavior Technician1366191314
  3. Camryn WhittingtonBehavior Technician1457056046
  4. Kelly WiedmannBehavior Technician1508432675
  5. Rozanne WijesingheSpeech-Language Pathologist1851864722
  6. Abigail Wild, DPTPhysical Therapist1639855075
  7. Jacquilyn WilkersonBehavior Technician1508530825
  8. Thomas Wilkinson, MDSpecialist1740265479
  9. Megan WilliamsBehavior Technician1649092941
  10. Aryn WilsonBehavior Technician1487472924
  11. Elizabeth WiserBehavior Technician1285200980
  12. Holli Withrow, MOTRLOccupational Therapist1174750822
  13. Theresa WoodburnBehavior Technician1700566775
  14. Cheryl WyattNurse Practitioner1932129574
  15. Samantha Yeatman, OTOccupational Therapist1508390139
  16. Dion YelderBehavior Technician1750061248
  17. Martin ZenthoeferPhysical Therapist1548884745
  18. Ameera ZobayerBehavior Technician1316685936

The largest Maryland cities

  1. Baltimore35,183
  2. Rockville14,353
  3. Bethesda7,245
  4. Columbia6,690
  5. Silver Spring6,531

All of Maryland →

How to read this directory

California, Maryland appears in the CMS National Plan and Provider Enumeration System with 318 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 California - 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 California 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 California is weighted toward Behavior Technician (113 clinicians, followed by Occupational Therapist with 20 and Pharmacist with 19). 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 Maryland's population, California reports roughly 5.1 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 Maryland's most common specialties, Home Health Aide is the most prominent one with no provider currently listing a California practice address, a coverage gap California patients typically fill by traveling to a larger nearby hub.

For California 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 California, MD?

There are 318 registered healthcare providers in California, MD, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.

What are the most common medical specialties in California?

The most common specialties in California are Behavior Technician, Occupational Therapist, Pharmacist, Speech-Language Pathologist, Behavior Analyst. Behavior Technician has the most providers with 113.

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.