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 98 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. George Gu, MDStudent in an Organized Health Care Education/Training Program1245031475
  2. Celeste GuadianaBehavior Analyst1275096224
  3. Anani GuantesBehavior Technician1558913764
  4. Meghana GudaBehavior Technician1255168456
  5. Lucia GudinoBehavior Analyst1548007446
  6. Santiago Gudino Rosales, MDStudent in an Organized Health Care Education/Training Program1437951571
  7. Antonio GuerraRehabilitation Practitioner1487912218
  8. Cindy GuerraBehavior Technician1265913537
  9. Esmeralda GuerraBehavior Technician1841124823
  10. Fatima GuerraCase Manager/Care Coordinator1053803932
  11. Gerardo GuerraEmergency Medicine Physician1598224982
  12. Isabel GuerraBehavior Technician1720765712
  13. John GuerraPeer Specialist1598693921
  14. Julie-Ann GuerraBehavior Technician1922855311
  15. Melissa GuerraDoula1558071332
  16. Nikoini GuerraMassage Therapist1972368660
  17. Ruby GuerraBehavior Technician1538045364
  18. Breanna GuerreroBehavior Technician1336622919
  19. Christine GuerreroRehabilitation Practitioner1235523630
  20. Dailyn GuerreroBehavior Technician1851103691
  21. Gricelda GuerreroBehavior Technician1033075353
  22. Mariana GuerreroBehavior Technician1659257178
  23. Marta GuerreroCommunity Health Worker1649391574
  24. Matthew GuerreroBehavior Technician1023722642
  25. Regina GuerreroRehabilitation Practitioner1932080744
  26. Sebastian GuerreroBehavior Technician1629757851
  27. Walter Guerrero BeltranBehavior Technician1225749278
  28. Kimberly Guerrero Leon, NONEBehavior Technician1053060137
  29. Alondra GuerrraBehavior Technician1689385098
  30. Carissa GuevaraBehavior Technician1215792858
  31. Erica GuevaraBehavior Technician1356125975
  32. Filiberta GuevaraBehavior Technician1346004710
  33. Gerardo Guevara, D.C.Chiropractor1265516694
  34. Jessica GuevaraCase Manager/Care Coordinator1851996607
  35. Jocelin GuevaraStudent in an Organized Health Care Education/Training Program1568277127
  36. Johana GuevaraMental Health Counselor1578976262
  37. Lirio GuevaraBehavior Technician1720759327
  38. Lisa GuevaraBehavior Technician1992557995
  39. Manuel Guevara, DDS,MSDentist1023226594
  40. Susanne Guffey, LCSWClinical Social Worker1760676936
  41. Rainier Guiang, M.D.Pain Medicine (Anesthesiology) Physician1548217821
  42. Joslyn GuicoCase Manager/Care Coordinator1851872931
  43. Michelle GuidoRehabilitation Practitioner1225840630
  44. Alexander GuileStudent in an Organized Health Care Education/Training Program1366837551
  45. Brandy GuilianoMental Health Counselor1720356074
  46. Ashley GuillenBehavior Technician1255063871
  47. Guadalupe GuillenSocial Worker1457062689
  48. Tiffany GuillenBehavior Technician1972431138
  49. Nikolas GuitronBehavior Technician1275033185
  50. Raj Gulati, DOStudent in an Organized Health Care Education/Training Program1528761095

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.