Stephen Simpson, MD
Psychologist · Pasadena, CA
Stephen Simpson, MD is a psychologist with a practice address in Pasadena, California, and NPI 1801278148, issued on Jun 23, 2015. Check the license (California PSY17653, as entered in NPPES) with the California board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Stephen Simpson
- Credential
- MD
- Primary taxonomy
- Psychologist 103T00000X
- License number
- PSY17653 CA
Self-reported in NPPES; status is on the state search - Practice location
- 751 N Fair Oaks Ave, Pasadena, CA 91103
- Phone
- (213) 718-0256
- Enumerated
- Jun 23, 2015
- Record last updated
- Jun 23, 2015 (not updated in 11 years: call before relying on the address or phone)
- Fax
- (818) 301-7443
- Entity
- Type 1 · individual
8 nearest psychologist records → All 7,304 in California → Look up another NPI →
Also registered at 751 N Fair Oaks Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Roberto Zarate, PHDClinical Psychologist1790811248
Verify Stephen Simpson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license PSY17653Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Stephen Simpson among 7,304 psychologist records in California
Stephen Simpson, MD is one of 7,304 psychologist records with a practice address in California. 6% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2015, is newer than 64% of them.
- NPI issued2015 · 64% of these records are older, 33% newer
- In a Medicare fileNo · 6% of these records are
- In the CMS Doctors and Clinicians fileNo · 14% of these records are
- Record last updated2015 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 103T00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
146 psychologist records list a practice address in Pasadena
They are 146 of the 10,525 NPPES records with a practice address in Pasadena, and 7,304 psychologist records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 7,304 in California → Every provider in Pasadena → Psychologist nationwide →
The 8 psychologist records with the nearest ZIP codes
- Natalie Arbid, PHDPasadena, CA 911031073965299
- Catherine Gray, PSY.D.Pasadena, CA 911031225575293
- Jonathan Grayson, PH.D.Pasadena, CA 911031346350378
- Sonja Munson, PHDPasadena, CA 911031629377197
- Sandra Randall, PHD PSYCHOLOGISTPasadena, CA 911031174705925
- Beth Staehling, PSY.D.Montrose, CA 911031174689848
- Alison Johnson, PSYDPasadena, CA 911041558335067
- Ori Levi, PHDPasadena, CA 911041891079042
Common questions
What is Stephen Simpson, MD's NPI number?
Stephen Simpson, MD's National Provider Identifier (NPI) is 1801278148, issued on Jun 23, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Stephen Simpson, MD located?
The NPPES record lists a practice address at 751 N Fair Oaks Ave, Pasadena, CA, 91103. Phone: (213) 718-0256. Providers update this record themselves, so call before visiting.
How can I verify Stephen Simpson, MD's license?
NPPES lists California license number PSY17653, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.
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.