Registry data as of Aug 27, 2026

Doctors and health care providers in Alta Loma, CA

128 individual NPPES records list a Alta Loma practice address, 472nd of 812 California cities. The largest group is behavior analyst: 23, 18% of the city's records, against 2% across California.

CMS NPPES registry, loaded Aug 27, 2026 · method · Verify with CMS →

The 8 largest groups in Alta Loma

Source: CMS NPPES primary taxonomy, loaded Aug 27, 2026.

Alta Loma in California

  • Rank in California472nd of 812 cities by records
  • Share of the state<0.1% of California's records
  • Specialties present25 or more taxonomy codes
  • Top three groups38.3% of all records
  • Behavior Analyst rank11th of the 10 California cities with the most

Compared with California as a whole, Alta Loma has 8.8× the state's share of behavior analyst records.

Providers in Alta Loma, alphabetically

  1. Luis AcostaMental Health Counselor1326223827
  2. Antranig Aghbashian, PHARMDPharmacist1366804361
  3. Carlos Aguirre, RDHDental Hygienist1205061694
  4. Jerry AndersonBehavior Analyst1245689363
  5. Tierra Andrews, AMFTMarriage & Family Therapist1023905809
  6. Karen Asbra, LICENSED MFTMarriage & Family Therapist1053039230
  7. Julie Barthelemy, MA, BCBABehavior Analyst1629435052
  8. Jordan Bartolome, PHARMDPharmacist1295456846
  9. John Beemer, PA-CPhysician Assistant1306033071
  10. Tracy Bennett, RNAdministrator Registered Nurse1285243444
  11. William Bescoby, O.D.Optometrist1114010162
  12. Aimee Blair, MS, CCLSHealth & Wellness Coach1619859378
  13. Kimberly BolducOccupational Therapy Assistant1629435128
  14. Brittany BooneBehavior Analyst1770938565
  15. Cynthia BriscoeCommunity Health Worker1083380265
  16. Terry Brock, DDSDentist1265590624
  17. Richard Buck, D.D.S.Dentist1518167568
  18. Monica BuonavitaRehabilitation Practitioner1609206804
  19. Klarissa CabreraBehavior Analyst1528560372
  20. Jamie Castro, PPSSchool Counselor1417816661
  21. Bob Chen, BCBABehavior Analyst1932543980
  22. Ivy Cheng, PHARMDPharmacist1487921334
  23. Daniel Clayton, CRNACertified Registered Nurse Anesthetist1710176342
  24. Joanne Claytor, LCSWMental Health Counselor1407290232
  25. L. Cochran, DDSGeneral Practice Dentistry1457555476
  26. Natalie Cochran, DDSDentist1336398197
  27. Dominique ConnorBehavior Technician1750869608
  28. Michelle David, BCBABehavior Analyst1053740522
  29. Garet Davis, D.C.Chiropractor1356658264
  30. Michelle EagleAddiction (Substance Use Disorder) Counselor1598121121
  31. Sheree Earle, LCSWClinical Social Worker1407936073
  32. Shari EmasSpecialist1922416890
  33. Michael EstradaAthletic Trainer1396239760
  34. Eric Evenhuis, MFTSpecialist1114112455
  35. Mario Flores, DDSPeriodontics1548486277
  36. Reginald Friesen, M.D.Internal Medicine Physician1043642333
  37. Rosemary GarciaMarriage & Family Therapist1104345453
  38. Stephanie Gonzales, B.S.Clinical Social Worker1831720952
  39. Tamara GonzalezMarriage & Family Therapist1255011367
  40. Sylvia GranielloBehavior Analyst1508211293
  41. Michael GrausamBehavior Technician1881260636
  42. Sam HaddadPharmacist1801157292
  43. Steven Hernandez, D.D.S.Dentist1588779953
  44. Victoria HicksBehavior Technician1740848233
  45. Tiffany Horn, FNPNurse Practitioner1689391120
  46. Andrew Hoyt, RCP, RRTRegistered Respiratory Therapist1992279400
  47. Trevor Hurley, LMFTMarriage & Family Therapist1942048574
  48. Buchi Imoohi, FNPPsychiatric/Mental Health Nurse Practitioner1811137938
  49. Milan Irvin, D.M.D.Dentist1174871966
  50. Ashley JimenezBehavior Technician1407515364

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

Alta Loma, California appears in the CMS National Plan and Provider Enumeration System with 128 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 Alta Loma - 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 Alta Loma 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 Alta Loma is weighted toward Behavior Analyst (23 clinicians, followed by Marriage & Family Therapist with 15 and Dentist with 11). 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, Alta Loma reports roughly 0.3 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, Addiction (Substance Use Disorder) Counselor is the most prominent one with no provider currently listing a Alta Loma practice address, a coverage gap Alta Loma patients typically fill by traveling to a larger nearby hub.

For Alta Loma 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 Alta Loma, CA?

There are 128 registered healthcare providers in Alta Loma, CA, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.

What are the most common medical specialties in Alta Loma?

The most common specialties in Alta Loma are Behavior Analyst, Marriage & Family Therapist, Dentist, General Practice Dentistry, Pharmacist. Behavior Analyst has the most providers with 23.

Source: CMS National Plan and Provider Enumeration System (NPPES), file loaded Aug 27, 2026 (NPPES files on CMS.gov). Records are self-reported registrations, not licenses.

Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.