IndividualActive
John Gershefski, PH.D.
NPI 1427180405 · Clinical Psychologist · Bethesda, MD
John Gershefski, PH.D. is a Clinical Psychologist provider in Bethesda, MD (NPI 1427180405).
Provider details
- NPI number
- 1427180405
- Entity type
- Individual
- Primary specialty
- Clinical PsychologistBehavioral Health & Social Service Providers
- Credential
- PH.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 03398 (MD)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
Detailed profile(89/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
6809 Whittier Blvd
Bethesda, MD 20817-6066
Phone: (301) 263-1115
Street-level locationGet directions
Mailing address
6809 Whittier Blvd
Bethesda, MD 20817-6066
Registry dates
- Enumerated
- 2007-03-12
- Last updated
- 2014-01-14
Frequently asked questions
- What is John Gershefski's NPI number?
- John Gershefski's National Provider Identifier (NPI) is 1427180405, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Gershefski's specialty?
- John Gershefski is listed in the NPPES registry with a primary specialty of Clinical Psychologist (Behavioral Health & Social Service Providers).
- Where is John Gershefski located?
- John Gershefski's practice location on file with NPPES is 6809 Whittier Blvd, Bethesda, MD 20817-6066.
- What is John Gershefski's phone number?
- The practice phone number listed in the NPPES registry for John Gershefski is (301) 263-1115.
- Is John Gershefski's NPI active?
- Yes — John Gershefski's NPI (1427180405) is active in the NPPES registry as of the last update on 2014-01-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.