William Griffin, RNCS PC APRN BC
NPI 1407962038 · Adult Psychiatric/Mental Health Clinical Nurse Specialist · Gardner, MA
Enrolled with Medicare as Practitioner - Certified Clinical Nurse Specialist (cns) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Griffin, RNCS PC APRN BC is a Adult Psychiatric/Mental Health Clinical Nurse Specialist provider in Gardner, MA (NPI 1407962038).
Provider details
- NPI number
- 1407962038
- Entity type
- Individual
- Primary specialty
- Adult Psychiatric/Mental Health Clinical Nurse SpecialistPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- RNCS PC APRN BC
- Sex
- Male
- Sole proprietor
- No
- License
- 124435 (MA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
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
- 2006-08-23
- Last updated
- 2014-08-13
Frequently asked questions
- What is William Griffin's NPI number?
- William Griffin's National Provider Identifier (NPI) is 1407962038, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Griffin's specialty?
- William Griffin is listed in the NPPES registry with a primary specialty of Adult Psychiatric/Mental Health Clinical Nurse Specialist (Physician Assistants & Advanced Practice Nursing Providers).
- Where is William Griffin located?
- William Griffin's practice location on file with NPPES is 31 Lake St, Gardner, MA 01440-3879.
- What is William Griffin's phone number?
- The practice phone number listed in the NPPES registry for William Griffin is (978) 632-9400.
- Does William Griffin accept Medicare?
- William Griffin is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Griffin's NPI active?
- Yes — William Griffin's NPI (1407962038) is active in the NPPES registry as of the last update on 2014-08-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.