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 244 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. Mark Summers, LMFTMarriage & Family Therapist1174665210
  2. Sheree Summers, LMFTMarriage & Family Therapist1770776775
  3. Aubrey SumnerBehavior Technician1538829593
  4. Chao-Huang Sun, M.D., MPHNephrology Physician1134174493
  5. Guifeng Sun, M.D.Specialist1255593026
  6. Susan Sun, MDNephrology Physician1225197973
  7. Wendy SunAmbulatory Care Pharmacist1730766957
  8. Shankar SundaramAnesthesiology Physician1891841979
  9. Deny Sung, MDStudent in an Organized Health Care Education/Training Program1215517636
  10. Michael Sunnaa, MDInternal Medicine Physician1790414589
  11. Letty SuonCounselor1508677576
  12. Anocha Suphol, MPTSports Physical Therapist1003031899
  13. Ashley Suplee, O.DOptometrist1841672607
  14. Amit Sureen, DORheumatology Physician1619533742
  15. Siddharth SureshStudent in an Organized Health Care Education/Training Program1962201434
  16. Juliet Sutherland, M.D.Physical Medicine & Rehabilitation Physician1386802585
  17. Shaunna SutterAddiction (Substance Use Disorder) Counselor1235372152
  18. Brooke Sutton, ATCAthletic Trainer1629593660
  19. Deborah Sutton, MFTMarriage & Family Therapist1285306431
  20. Samiyah SuttonBehavior Technician1669307641
  21. Tierney SuttonBehavior Technician1770236663
  22. Natalie Suzberic-Williams, MS, CATCIII 091997Case Manager/Care Coordinator1003264656
  23. Stephen Suzuki, MDOrthopaedic Surgery Physician1114923968
  24. Christopher Swanson, M.D.Internal Medicine Physician1023016847
  25. Holly Swanson, LMFTMarriage & Family Therapist1386839934
  26. Kim Swanson, MS, LMFTMarriage & Family Therapist1639234081
  27. Wendi Swanson, F.N.P-CFamily Nurse Practitioner1629146071
  28. Zachary SwansonBehavior Technician1760220651
  29. Courtney SwatsenbargCase Manager/Care Coordinator1386315885
  30. Hannah SwearingenBehavior Technician1225722861
  31. Avalon SweetlandBehavior Technician1083588222
  32. Chad Sweetnam, PA-CMedical Physician Assistant1740213594
  33. Wesley Sweis, PHARM.D.Pharmacist1336624998
  34. Christa Swenson, DPTPhysical Therapist1487124095
  35. Penelope SweteBehavior Technician1649038795
  36. Nathan Swift, ATCAthletic Trainer1881059830
  37. Veronica SwinkMental Health Counselor1467620153
  38. Hanh SwinneyPharmacist1194198564
  39. Joann SwintonBehavior Technician1558245316
  40. Jude Sy, CPNP-PCPediatric Nurse Practitioner1891463790
  41. Sireena Sy, MDStudent in an Organized Health Care Education/Training Program1225695612
  42. Christa SydowStudent in an Organized Health Care Education/Training Program1871367227
  43. Amanah Syed, DOStudent in an Organized Health Care Education/Training Program1437851862
  44. Karen Sykes, CPD/CLDDoula1710698063
  45. Berlyn SylvesterBehavior Technician1275472326
  46. Heather Sylvester, LCSWClinical Social Worker1174740161
  47. Han Ta, MDDiagnostic Radiology Physician1255332185
  48. Minhtri Ta, MDDiagnostic Radiology Physician1063114692
  49. Olivia TaClinical Social Worker1174374219
  50. Jennifer TaamnehBehavior Technician1679433924

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.