Joseph Greer, PHD
NPI 1538194691 · Psychologist · Boston, MA
Enrolled with Medicare as Practitioner - Clinical Psychologist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Joseph Greer, PHD is a Psychologist provider in Boston, MA (NPI 1538194691).
Provider details
- NPI number
- 1538194691
- Entity type
- Individual
- Primary specialty
- PsychologistBehavioral Health & Social Service Providers
- Credential
- PHD
- Sex
- Male
- Sole proprietor
- No
- License
- 8567 (MA)
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
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
Mailing address
Registry dates
- Enumerated
- 2006-07-11
- Last updated
- 2007-07-08
Frequently asked questions
- What is Joseph Greer's NPI number?
- Joseph Greer's National Provider Identifier (NPI) is 1538194691, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Joseph Greer's specialty?
- Joseph Greer is listed in the NPPES registry with a primary specialty of Psychologist (Behavioral Health & Social Service Providers).
- Where is Joseph Greer located?
- Joseph Greer's practice location on file with NPPES is 55 Fruit St, Boston, MA 02114.
- What is Joseph Greer's phone number?
- The practice phone number listed in the NPPES registry for Joseph Greer is (617) 726-2066.
- Does Joseph Greer accept Medicare?
- Joseph Greer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Joseph Greer's NPI active?
- Yes — Joseph Greer's NPI (1538194691) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.