NPPES file of Aug 9, 2026

Doctors and health care providers in Pasadena, CA

10,525 individual NPPES records list a practice address in Pasadena, 13th of 812 California cities. The largest group is behavior technician: 1,617, 15% of the city's records, against 18% across California. Page 46 of 211.

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

Pasadena in California

  • Rank in California13th of 812 cities by records
  • Share of the state1.1% of California's records
  • Specialties present25 or more taxonomy codes
  • Top three groups34.4% of all records

Compared with California as a whole, Pasadena has 6.2× the state's share of rehabilitation practitioner records and 0.51× its share of general practice dentistry records.

Providers in Pasadena, alphabetically

  1. Katherine DellaferaClinical Social Worker1578137329
  2. Melissa Dellens, M.A., LMFTMarriage & Family Therapist1053906693
  3. Joseph Dellinger, MDInternal Medicine Physician1740691377
  4. Shakiyla DeloneBehavior Technician1720724552
  5. Ryan Delos Santos, LVNLicensed Vocational Nurse1992944102
  6. Rudy DemanettAddiction (Substance Use Disorder) Counselor1184125205
  7. Marie-Helene DemersMarriage & Family Therapist1275992430
  8. Karen Demott, M.F.C.T.Marriage & Family Therapist1275742876
  9. Amy Demyan, PHDClinical Psychologist1922606888
  10. David Denenholz, M.D.Specialist1801837331
  11. Angela Deng, MDFamily Medicine Physician1184365280
  12. Iris DengStudent in an Organized Health Care Education/Training Program1376227306
  13. Jeffrey Denham, M.D.Internal Medicine Physician1477592806
  14. Paula Denney, M.F.T.Marriage & Family Therapist1467519090
  15. Anjanette DennisMental Health Counselor1588781074
  16. Elena DennisStudent in an Organized Health Care Education/Training Program1033849971
  17. Isla Dennis, MA, AMFTMarriage & Family Therapist1457006751
  18. Lindsay Dennis, B.A.Rehabilitation Practitioner1760504831
  19. Whittney DennisCase Manager/Care Coordinator1457827446
  20. Lauren Denoia, LEP, BCBABehavior Analyst1184047201
  21. Elizabeth Deoliveira, MDPediatric Cardiology Physician1265414833
  22. Michael Depinto, AMFTMental Health Counselor1427885367
  23. Rene Der Gregorian, D.M.D.Dentist1285612416
  24. Setareh Derakhshan, D.C.Chiropractor1467722231
  25. Joann DerasCase Manager/Care Coordinator1043965536
  26. Varastad DerbedrosianAddiction (Substance Use Disorder) Counselor1831024256
  27. Jennifer Dergregorian, PSY.DClinical Psychologist1952650038
  28. Arbi Derian, D.C.Chiropractor1144415266
  29. Marc Derome, P.T.Physical Therapist1881748663
  30. Zorik Deryaghoobian, FNP, PMHNP-BCPsychiatric/Mental Health Nurse Practitioner1629754510
  31. Rohan DesaiStudent in an Organized Health Care Education/Training Program1841691458
  32. Sana DesaiStudent in an Organized Health Care Education/Training Program1265278881
  33. Ping Deseo, RNPsychiatric/Mental Health Registered Nurse1801506621
  34. Olivia DesiletsBehavior Technician1902565500
  35. Gabriella DesotoStudent in an Organized Health Care Education/Training Program1891620449
  36. Tana Desouza, M.A. LMFTMarriage & Family Therapist1215265087
  37. Theresa Destito, LCSWClinical Social Worker1467592550
  38. Mary Devan, LCSWClinical Social Worker1043427537
  39. Aimee DeveneyBehavior Technician1164230033
  40. Jeanne Devi, DDSGeneral Practice Dentistry1316122989
  41. Greggory Devore, M.D.Maternal & Fetal Medicine Physician1851305312
  42. Cristina Dezan, PH.D.Psychologist1073735106
  43. Ravi DhruvAddiction (Substance Use Disorder) Counselor1194354167
  44. Paul Di Flauro, NPFamily Medicine Physician1114400959
  45. Rose Di NardoBehavior Technician1023959012
  46. Christine DiabMarriage & Family Therapist1831821271
  47. Fatimata Diakite, RNCritical Care Medicine Registered Nurse1386153542
  48. Camille DialMarriage & Family Therapist1023589215
  49. Lisa DiamondMarriage & Family Therapist1144968306
  50. Ana DiazBehavior Technician1548938178

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

Pasadena, California appears in the CMS National Plan and Provider Enumeration System with 10,525 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 Pasadena - 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 Pasadena 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 Pasadena is weighted toward Behavior Technician (1,617 clinicians, followed by Marriage & Family Therapist with 1,082 and Rehabilitation Practitioner with 924). 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, Pasadena reports roughly 27 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 Pasadena 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 Pasadena, CA?

There are 10,525 registered healthcare providers in Pasadena, CA, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.

What are the most common medical specialties in Pasadena?

The most common specialties in Pasadena are Behavior Technician, Marriage & Family Therapist, Rehabilitation Practitioner, Student in an Organized Health Care Education/Training Program, Clinical Social Worker. Behavior Technician has the most providers with 1,617.

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.