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 141 of 211.
The 8 largest groups in Pasadena
Source: CMS NPPES primary taxonomy, file of Aug 9, 2026.
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
- Michael OrtegonCertified Registered Nurse Anesthetist1770265639
- Estefania OrtezBehavior Analyst1003643073
- Andrea Ortiz, LVNLicensed Vocational Nurse1104426832
- Argelis Ortiz, ED.D, MSWRehabilitation Practitioner1952585390
- Ayessa OrtizBehavior Technician1124828942
- Christina OrtizBehavior Technician1083502264
- David OrtizDay Training/Habilitation Specialist1518008838
- Devon OrtizMarriage & Family Therapist1104064492
- Elizabeth OrtizMarriage & Family Therapist1629556964
- Emely Ortiz, M.A.Marriage & Family Therapist1407015324
- Freddy Ortiz, PH.D.Rehabilitation Practitioner1639594328
- German Ortiz, LMFTMarriage & Family Therapist1255567699
- Juan OrtizRehabilitation Practitioner1184751307
- Juliette OrtizRehabilitation Practitioner1962804740
- Martha OrtizBehavior Technician1417719188
- Maryuri OrtizBehavior Technician1134084858
- Monique OrtizRehabilitation Practitioner1689065930
- Paulina OrtizBehavior Technician1316653553
- Richard OrtizAddiction (Substance Use Disorder) Counselor1710711882
- Sam OrtizCase Manager/Care Coordinator1346612629
- Samantha OrtizPhysical Therapist1932916038
- Victor OrtizBehavior Technician1760073878
- Maria Ortiz Castillo, M.D.Hospitalist Physician1811298516
- Dyanne Alejandra Ortiz NinoBehavior Technician1700528841
- Natalia Ortiz VenturaBehavior Technician1811749674
- Oscar Ortiz-LopezBehavior Technician1184202020
- Gevork Orudzhyan, DCChiropractor1194698563
- Daniel OsborneAddiction (Substance Use Disorder) Counselor1700628021
- Jennifer Osborne-Caton, PA (ASCP)Anatomic Pathology Physician1447931837
- Stacey OsderClinical Social Worker1982734349
- Emma Oshagan, PH.D.Clinical Psychologist1073631925
- Artem OsherovStudent in an Organized Health Care Education/Training Program1164040390
- Ada Oshiro, PTHand Occupational Therapist1225321888
- Tania OsipofMarriage & Family Therapist1114578366
- Lionel OsorioBehavior Technician1043951486
- Cyndy Osorio UmanaStudent in an Organized Health Care Education/Training Program1568077279
- Courtney Osowski, MS, CNIMElectroneurodiagnostic Specialist/Technologist1194693341
- Paulina Ospina-Mallarino, LCSWClinical Social Worker1992971022
- Kathleen Osta, LCSWClinical Social Worker1891428934
- Paige Ostlund, NP-CFamily Nurse Practitioner1356926745
- Sarah OstroffProfessional Counselor1164020707
- Jasmin Osurto UrbinaBehavior Technician1326860933
- Juan Otenney, LPTLicensed Psychiatric Technician1679014500
- Kahla OteoBehavior Technician1003574575
- Jackson OteroAssistant Behavior Analyst1659036408
- Charles Otieno, M.D.Emergency Medicine Physician1326097338
- Maxa OttPsychoanalyst1801116520
- Bettina Ottenstein, LMFTMarriage & Family Therapist1497905574
- Janet Ottersberg, OTROccupational Therapist1992973069
- Anahid OungoulianRehabilitation Counselor1699969600
The largest California cities
- Los Angeles69,537
- San Diego52,937
- San Francisco38,143
- Sacramento33,083
- San Jose20,925
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.