Mark Gapen, PH.D.
NPI 1467786616 · Psychologist · Brookline, MA
Enrolled with Medicare as Practitioner - Clinical Psychologist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Gapen, PH.D. is a Psychologist provider in Brookline, MA (NPI 1467786616).
Provider details
- NPI number
- 1467786616
- Entity type
- Individual
- Primary specialty
- PsychologistBehavioral Health & Social Service Providers
- Credential
- PH.D.
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
16 yrs in NPPES registry
- Profile completeness38% of score
83% 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
Mailing address
Registry dates
- Enumerated
- 2009-09-21
- Last updated
- 2009-09-21
Frequently asked questions
- What is Mark Gapen's NPI number?
- Mark Gapen's National Provider Identifier (NPI) is 1467786616, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Gapen's specialty?
- Mark Gapen is listed in the NPPES registry with a primary specialty of Psychologist (Behavioral Health & Social Service Providers).
- Where is Mark Gapen located?
- Mark Gapen's practice location on file with NPPES is 1269 Beacon St, Brookline, MA 02446-5248.
- What is Mark Gapen's phone number?
- The practice phone number listed in the NPPES registry for Mark Gapen is (617) 232-1303.
- Does Mark Gapen accept Medicare?
- Mark Gapen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Gapen's NPI active?
- Yes — Mark Gapen's NPI (1467786616) is active in the NPPES registry as of the last update on 2009-09-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.