NPPES file of Aug 9, 2026

Doctors and health care providers in Antioch, CA

2,184 individual NPPES records list a practice address in Antioch, 100th of 812 California cities. The largest group is behavior technician: 595, 27% of the city's records, against 18% across California. Page 37 of 44.

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

Antioch in California

  • Rank in California100th of 812 cities by records
  • Share of the state0.2% of California's records
  • Specialties present25 or more taxonomy codes
  • Top three groups39.5% of all records

Compared with California as a whole, Antioch has 6× the state's share of school counselor records and 0.33× its share of student in an organized health care education/training program records.

Providers in Antioch, alphabetically

  1. Alton SeymoreBehavior Technician1477138667
  2. Yesha Shah, DOInternal Medicine Physician1356908966
  3. Alana Shain, MDAnatomic Pathology & Clinical Pathology Physician1538566526
  4. Sahar SharifzieBehavior Technician1376434480
  5. Nathan ShaverBehavior Technician1154282317
  6. Tyana ShawClinical & Laboratory Immunology (Internal Medicine) Physician1669199642
  7. Robert Sheffield, DDSDentist1336284538
  8. Nicole Shelton, M.D.Obstetrics & Gynecology Physician1396074373
  9. Ananth Shenoy, M.D.Specialist1346283967
  10. Morgan Shepherd, MFTIMarriage & Family Therapist1346760527
  11. James Shieh, M.DEmergency Medicine Physician1639198930
  12. Weilin Shih Huang, DDSEndodontics1154504173
  13. Kristen Shimoda, PHARMDPharmacist Clinician (PhC)/ Clinical Pharmacy Specialist1003580739
  14. Joyclyn Shinmoto, CP, BOCOProsthetist1497296438
  15. Ali Shirani, DDSGeneral Practice Dentistry1790718187
  16. Swati ShirkeDentist1902944820
  17. Lauren Shirvanee, D.O.General Practice Physician1033447222
  18. Stephanie Showing, DDSDentist1528722865
  19. Jaspal Sidhu, MDOccupational Medicine Physician1649358722
  20. Sohrab Sidhu, MD, MPH, MSInternal Medicine Physician1174966238
  21. Merari SiguenzaBehavior Analyst1548770209
  22. Elizabeth SiliezarPeer Specialist1023297900
  23. Gregory Silva, ODOptometrist1285786012
  24. Michelle Silva MarinBehavior Technician1841936937
  25. Gabriel SilveiraBehavior Technician1205312782
  26. Karen Silverman, LCSWSpecialist1891844841
  27. Jessica SilvestreBehavior Technician1467154989
  28. Aden SimaBehavior Technician1508452343
  29. Nathan Simarro, D.D.S.Public Health Dentistry1144637661
  30. Ryan Simarro, D.M.D.Dentist1194164756
  31. Mark Simkins, DDSGeneral Practice Dentistry1447566369
  32. Marsharel SimonBehavior Technician1114852910
  33. Liana Simoni, NPNurse Practitioner1245896828
  34. Emonie SimpsonBehavior Technician1750027843
  35. Ronda SimpsonPersonal Care Attendant1518761469
  36. Christina Sinclair, PH.D.Clinical Child & Adolescent Psychologist1548421159
  37. Indivar SinghPhysical Therapy Assistant1508427220
  38. Nardip SinghPharmacist1962936849
  39. Rajvir SinghPharmacist1376376731
  40. Sarika Singh, PHARM.D.Pharmacotherapy Pharmacist1174696124
  41. Sukhvir Singh, DMDDentist1780305417
  42. Sukhwant Singh, MDHematology & Oncology Physician1285839209
  43. Sumeet Singh, PAPhysician Assistant1124401997
  44. Sierra SingharathBehavior Analyst1215428107
  45. Mark Siri, PHARM.D.Pharmacist1538584164
  46. Debbie Slack-Gay, NURSE PRACTITIONERNurse Practitioner1073920260
  47. Jyntry SmethersBehavior Technician1316726623
  48. Andre SmiljicPediatrics Physician1730522954
  49. Brittney Smith, R1358670819Addiction (Substance Use Disorder) Counselor1598390973
  50. Bryonna SmithBehavior Technician1942942552

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

Antioch, California appears in the CMS National Plan and Provider Enumeration System with 2,184 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 Antioch - 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 Antioch 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 Antioch is weighted toward Behavior Technician (595 clinicians, followed by Addiction (Substance Use Disorder) Counselor with 159 and Pharmacist with 108). 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, Antioch reports roughly 5.6 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 Antioch practice address, a coverage gap Antioch patients typically fill by traveling to a larger nearby hub.

For Antioch 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 Antioch, CA?

There are 2,184 registered healthcare providers in Antioch, CA, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.

What are the most common medical specialties in Antioch?

The most common specialties in Antioch are Behavior Technician, Addiction (Substance Use Disorder) Counselor, Pharmacist, Marriage & Family Therapist, Behavior Analyst. Behavior Technician has the most providers with 595.

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.