NPPES file of Aug 9, 2026

Doctors and health care providers in Orange, CA

13,245 individual NPPES records list a practice address in Orange, 11th of 812 California cities. The largest group is behavior technician: 4,271, 32% of the city's records, against 18% across California. Page 228 of 265.

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

The 8 largest groups in Orange

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

Orange in California

  • Rank in California11th of 812 cities by records
  • Share of the state1.4% of California's records
  • Specialties present25 or more taxonomy codes
  • Top three groups42% of all records
  • Behavior Technician rank7th of the 10 California cities with the most

Compared with California as a whole, Orange has 7.3× the state's share of other technician records and 0.43× its share of physical therapist records.

Providers in Orange, alphabetically

  1. Zephyr Souza-ZimmermanBehavior Technician1477400034
  2. Piotr Sowa, M.D.Gastroenterology Physician1144663592
  3. Sheeva SowdagarStudent in an Organized Health Care Education/Training Program1548857667
  4. James Sowers, MD, PHDAnesthesiology Physician1700527470
  5. Deborah Spandikow, PMHNPPsychiatric/Mental Health Nurse Practitioner1164631297
  6. Sophia SpannEmergency Medicine Physician1114668266
  7. Charlene Sparks, PTAPhysical Therapy Assistant1376014373
  8. Kristie Speckhals, P.T.Physical Therapist1104239367
  9. Kellie Spector, MDHematology & Oncology Physician1700374469
  10. Jasmynne SpenceClinical Social Worker1528612025
  11. Samantha SpenceBehavior Technician1598635922
  12. Christopher SpencerRehabilitation Practitioner1992130165
  13. Dean SpencerStudent in an Organized Health Care Education/Training Program1427552561
  14. Donald Sperling, MDPediatric Cardiology Physician1255441507
  15. Stephanie SpidleDay Training/Habilitation Specialist1255208161
  16. Stella SpiegelBehavior Technician1316832793
  17. Lindsey Spiegelman, MDEmergency Medicine Physician1699138255
  18. Savanna SpielmanBehavior Technician1710796289
  19. Katie SpiersBehavior Technician1427883040
  20. Eugene Michael Spiritus, MDPulmonary Disease Physician1851471080
  21. Courtney Spitzer, MDStudent in an Organized Health Care Education/Training Program1871433078
  22. Abraham Spitzer-TilchinBehavior Technician1518666924
  23. Nordy Spivack, M.D.Cardiovascular Disease Physician1316974686
  24. Rebecca Sponberg, NPPediatric Nurse Practitioner1679108369
  25. Kevin Spradlin, LMFTMarriage & Family Therapist1063133734
  26. Heather SpragueBehavior Technician1619818432
  27. Brianna SprattLicensed Psychiatric Technician1316746472
  28. Jean Sprengel, M.D.Anesthesiology Physician1316907553
  29. Crystal Springe, NTPNutrition Education Nutritionist1427607183
  30. Stafford SpringerBehavior Technician1235948621
  31. Suma Srinath, M.D.Internal Medicine Physician1619121704
  32. Neetika Srivastava, M.D.Gastroenterology Physician1538506597
  33. Sophie SrivastavaOther Technician1801483441
  34. Alyssa St. John FarrellBehavior Technician1083567879
  35. Sharon St.pierre, LCSWClinical Social Worker1548439342
  36. Stephen Sta AnaAthletic Trainer1598519431
  37. Michael StackBehavior Technician1336998046
  38. Tara StadelAddiction (Substance Use Disorder) Counselor1134712169
  39. James Staggs, CADC 11Addiction (Substance Use Disorder) Counselor1598618126
  40. Anne Stahl-Hughitt, NPNurse Practitioner1629126560
  41. Dennis StainesBehavior Technician1811832637
  42. Michael J Stamos, MDSurgery Physician1033299276
  43. Raina StandaertBehavior Technician1215824628
  44. Bree StanfieldBehavior Technician1760171151
  45. Kelly Stanley, MDPediatrics Physician1922561109
  46. Madison Stanley, PT, DPTPhysical Therapist1669351375
  47. Marie StanleyBehavior Technician1457180762
  48. Noah StanleyBehavior Technician1023942117
  49. Sarah Stanowicz, M.D.Internal Medicine Physician1205082161
  50. Steven Stanowicz, M.D.Dermatology Physician1649204520

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

Orange, California appears in the CMS National Plan and Provider Enumeration System with 13,245 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 Orange - 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 Orange 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 Orange is weighted toward Behavior Technician (4,271 clinicians, followed by Student in an Organized Health Care Education/Training Program with 870 and Marriage & Family Therapist with 424). 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, Orange reports roughly 34 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, Case Manager/Care Coordinator is the most prominent one with no provider currently listing a Orange practice address, a coverage gap Orange patients typically fill by traveling to a larger nearby hub.

For Orange 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 Orange, CA?

There are 13,245 registered healthcare providers in Orange, CA, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.

What are the most common medical specialties in Orange?

The most common specialties in Orange are Behavior Technician, Student in an Organized Health Care Education/Training Program, Marriage & Family Therapist, Clinical Social Worker, Mental Health Counselor. Behavior Technician has the most providers with 4,271.

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.