NPPES file of Aug 9, 2026

Doctors and health care providers in Riverside, CA

13,893 individual NPPES records list a practice address in Riverside, 9th of 812 California cities. The largest group is behavior technician: 3,626, 26% of the city's records, against 18% across California. Page 270 of 278.

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

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

Riverside in California

  • Rank in California9th of 812 cities by records
  • Share of the state1.4% of California's records
  • Specialties present25 or more taxonomy codes
  • Top three groups37.6% of all records
  • Behavior Technician rank9th of the 10 California cities with the most

Compared with California as a whole, Riverside has 5.9× the state's share of peer specialist records and 0.50× its share of physical therapist records.

Providers in Riverside, alphabetically

  1. Andrew WilliamsMassage Therapist1033872429
  2. Angel WilliamsBehavior Technician1184209272
  3. Anthony Williams, LMFTMarriage & Family Therapist1174946404
  4. Ashya WilliamsPeer Specialist1285366831
  5. Ayanna Williams, RNPsychiatric/Mental Health Nurse Practitioner1518349414
  6. Bo WilliamsBehavior Technician1942075064
  7. Breanna WilliamsBehavior Technician1235882721
  8. Brianna Williams, MDSurgery Physician1548729643
  9. Brittney WilliamsBehavior Technician1316659451
  10. Carolyn Williams, LCSWClinical Social Worker1891883427
  11. Chimera Williams, DENTAL HYGIENISTDental Hygienist1609390178
  12. Cierra WilliamsBehavior Technician1295617686
  13. Crystal WilliamsMarriage & Family Therapist1104378850
  14. Dane Williams, CADC CASAddiction (Substance Use Disorder) Counselor1780130195
  15. Darwin WilliamsPeer Specialist1184454035
  16. Dlawnda WilliamsBehavior Technician1538045356
  17. Elene Williams, MPABehavior Analyst1164059945
  18. Esther WilliamsAddiction (Substance Use Disorder) Counselor1700774775
  19. Georgina WilliamsCase Manager/Care Coordinator1922457944
  20. Jacari WilliamsBehavior Technician1073305223
  21. Janine Williams, LVNLicensed Vocational Nurse1801324017
  22. Jason WilliamsCase Manager/Care Coordinator1902513906
  23. Jazzlyn WilliamsBehavior Technician1396633251
  24. John WilliamsAddiction (Substance Use Disorder) Counselor1205312907
  25. Jordan WilliamsAthletic Trainer1023643541
  26. Kimberly Williams, ACSWClinical Social Worker1417837360
  27. Kione WilliamsSocial Worker1760907851
  28. Kristin WilliamsSocial Worker1316225386
  29. Leatrice Williams, LVNLicensed Practical Nurse1720226186
  30. Lindsay Williams, OTR/LOccupational Therapist1245981042
  31. Linisa WilliamsBehavior Technician1275294795
  32. Lori Williams, CADCAddiction (Substance Use Disorder) Counselor1629423462
  33. Mariyah WilliamsBehavior Technician1174394035
  34. Michael WilliamsBehavior Technician1275352221
  35. Mya WilliamsMental Health Counselor1508595042
  36. Porscha Williams, BSCase Manager/Care Coordinator1265889851
  37. Rebecca WilliamsMarriage & Family Therapist1639448053
  38. Rodney WilliamsAddiction (Substance Use Disorder) Counselor1558883785
  39. Sherae Williams, CNMAdvanced Practice Midwife1982205118
  40. Stephen WilliamsLicensed Vocational Nurse1881405876
  41. Taiquira Williams, BCATBehavior Technician1235765421
  42. Tanishia Williams, LVNLicensed Vocational Nurse1437032224
  43. Taryn WilliamsBehavior Technician1154119709
  44. Taylor WilliamsBehavior Technician1952254369
  45. Tia WilliamsBehavior Technician1245158427
  46. Tokunbo Williams, M.DPsychiatry Physician1033422274
  47. Unique WilliamsBehavior Technician1699493353
  48. Walter WilliamsCase Manager/Care Coordinator1609569813
  49. William WilliamsBehavior Analyst1336790583
  50. Laurie Williams-ArmilRegistered Nurse1932869609

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

Riverside, California appears in the CMS National Plan and Provider Enumeration System with 13,893 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 Riverside - 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 Riverside 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 Riverside is weighted toward Behavior Technician (3,626 clinicians, followed by Marriage & Family Therapist with 912 and Case Manager/Care Coordinator with 689). 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, Riverside reports roughly 35.7 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.

For Riverside 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 Riverside, CA?

There are 13,893 registered healthcare providers in Riverside, CA, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.

What are the most common medical specialties in Riverside?

The most common specialties in Riverside are Behavior Technician, Marriage & Family Therapist, Case Manager/Care Coordinator, Student in an Organized Health Care Education/Training Program, Clinical Social Worker. Behavior Technician has the most providers with 3,626.

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.