John Gershefski, PH.D.
Clinical Psychologist · Bethesda, MD
John Gershefski, PH.D. is a clinical psychologist with a practice address in Bethesda, Maryland, and NPI 1427180405, issued on Mar 12, 2007. Check the license (Maryland 03398, as entered in NPPES) with the Maryland board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- John Gershefski
- Credential
- PH.D.
- Primary taxonomy
- Clinical Psychologist 103TC0700X
- License number
- 03398 MD
Self-reported in NPPES; status is on the state search - Practice location
- 6809 Whittier Blvd, Bethesda, MD 20817
- Phone
- (301) 263-1115
- Enumerated
- Mar 12, 2007
- Record last updated
- Jan 14, 2014 (not updated in 12 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest clinical psychologist records → All 1,499 in Maryland → Look up another NPI →
Verify John Gershefski in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Maryland board licenses this profession
Search for license 03398Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
John Gershefski among 1,499 clinical psychologist records in Maryland
John Gershefski, PH.D. is one of 1,499 clinical psychologist records with a practice address in Maryland. 10% 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 2007, is newer than 19% of them.
- NPI issued2007 · 19% of these records are older, 61% newer
- In a Medicare fileNo · 10% of these records are
- In the CMS Doctors and Clinicians fileNo · 18% of these records are
- Record last updated2014 · 64% 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 Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
179 clinical psychologist records list a practice address in Bethesda
They are 179 of the 7,245 NPPES records with a practice address in Bethesda, and 1,499 clinical psychologist records in Maryland. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 1,499 in Maryland → Every provider in Bethesda → Clinical Psychologist nationwide →
The 8 clinical psychologist records with the nearest ZIP codes
- Elisha Friedman, PH.D.Bethesda, MD 208171962610733
- Carey Heller, PSY.D.Bethesda, MD 208171366706434
- Euthymia Hibbs, PH,D.Bethesda, MD 208171750432506
- Dorothy Kaplan, PH.D.Bethesda, MD 208171952421992
- Andrea Leiman, PH.D.Bethesda, MD 208171942342027
- Lizbeth Moses, PH.D.Bethesda, MD 208171194092270
- Adam Pletter, PSY.D.Bethesda, MD 208171598988107
- Sallyann Sack, PH.D.Bethesda, MD 208171558413112
Common questions
What is John Gershefski, PH.D.'s NPI number?
John Gershefski, PH.D.'s National Provider Identifier (NPI) is 1427180405, issued on Mar 12, 2007. An NPI identifies a provider in billing; it is not a license.
Where is John Gershefski, PH.D. located?
The NPPES record lists a practice address at 6809 Whittier Blvd, Bethesda, MD, 20817. Phone: (301) 263-1115. Providers update this record themselves, so call before visiting.
How can I verify John Gershefski, PH.D.'s license?
NPPES lists Maryland license number 03398, as entered by the provider. Search the Maryland 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.