Diem M. Nguyen, PSY.D.
Clinical Psychologist · Philadelphia, PA
Diem M. Nguyen, PSY.D. is a clinical psychologist with a practice address in Philadelphia, Pennsylvania, and NPI 1265715668, issued on Sep 21, 2011. Check the license with the Pennsylvania board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Diem M. Nguyen
- Credential
- PSY.D.
- Primary taxonomy
- Clinical Psychologist 103TC0700X
- License number
- PSY31927 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1501 Locust St Unit 502, Philadelphia, PA 19102
- Phone
- (323) 510-7252
- Enumerated
- Sep 21, 2011
- Record last updated
- Apr 22, 2023
- Medicare enrollment
- Enrolled (PECOS I20200828000315); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest clinical psychologist records → All 2,597 in Pennsylvania → Look up another NPI →
Verify Diem M. Nguyen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Pennsylvania board licenses this professionCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Diem M. Nguyen among 2,597 clinical psychologist records in Pennsylvania
Diem M. Nguyen, PSY.D. is one of 2,597 clinical psychologist records with a practice address in Pennsylvania. 15% 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 2011, is newer than 58% of them.
- NPI issued2011 · 58% of these records are older, 39% newer
- In a Medicare fileNo · 15% of these records are
- In the CMS Doctors and Clinicians fileYes · 27% of these records are
- Graduated2016 · median 2003 among the 707 with a school on file
- Record last updated2023 · 65% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 103TC0700X and a Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
532 clinical psychologist records list a practice address in Philadelphia
They are 532 of the 42,849 NPPES records with a practice address in Philadelphia, and 2,597 clinical psychologist records in Pennsylvania. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 2,597 in Pennsylvania → Every provider in Philadelphia → Clinical Psychologist nationwide →
The 8 clinical psychologist records with the nearest ZIP codes
- Sol Barenbaum, PHDPhiladelphia, PA 191021750462313
- Charles Bittner, M.A., M.DIV., C.G.P.Philadelphia, PA 191021043399413
- Andrea Bloomgarden, PH DPhiladelphia, PA 191021316983380
- Joely Esposito, PSYDPhiladelphia, PA 191021740354737
- Todd Lewis, PHDPhiladelphia, PA 191021679552889
- Michael Murphy, PSY.D.Philadelphia, PA 191021245377548
- Christine Nezu, PH.D.Philadelphia, PA 191021205876398
- David Prince, PSYDPhiladelphia, PA 191021578596359
Common questions
What is Diem M. Nguyen, PSY.D.'s NPI number?
Diem M. Nguyen, PSY.D.'s National Provider Identifier (NPI) is 1265715668, issued on Sep 21, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Diem M. Nguyen, PSY.D. located?
The NPPES record lists a practice address at 1501 Locust St Unit 502, Philadelphia, PA, 19102. Phone: (323) 510-7252. Providers update this record themselves, so call before visiting.
How can I verify Diem M. Nguyen, PSY.D.'s license?
Search the Pennsylvania 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.