William Garrison, PH.D.
NPI 1427037258 · Clinical Psychologist · Worcester, MA
William Garrison, PH.D. is a Clinical Psychologist provider in Worcester, MA (NPI 1427037258).
Provider details
- NPI number
- 1427037258
- Entity type
- Individual
- Primary specialty
- Clinical PsychologistBehavioral Health & Social Service Providers
- Credential
- PH.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 2372 (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
20 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
- 2006-01-11
- Last updated
- 2020-11-11
- Certified
- 2020-11-11
Frequently asked questions
- What is William Garrison's NPI number?
- William Garrison's National Provider Identifier (NPI) is 1427037258, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Garrison's specialty?
- William Garrison is listed in the NPPES registry with a primary specialty of Clinical Psychologist (Behavioral Health & Social Service Providers).
- Where is William Garrison located?
- William Garrison's practice location on file with NPPES is 55 Lake Ave N, Worcester, MA 01655-0002.
- What is William Garrison's phone number?
- The practice phone number listed in the NPPES registry for William Garrison is (774) 442-3028.
- Is William Garrison's NPI active?
- Yes — William Garrison's NPI (1427037258) is active in the NPPES registry as of the last update on 2020-11-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.