William P. Mcinnis Psy.d, P.C.
NPI 1871756841 · Clinical Psychologist · Grandville, MI
Enrolled with Medicare as Part B Supplier - Clinic/Group Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William P. Mcinnis Psy.d, P.C. is a Clinical Psychologist organization in Grandville, MI (NPI 1871756841).
Provider details
- NPI number
- 1871756841
- Entity type
- Organization
- Primary specialty
- Clinical PsychologistBehavioral Health & Social Service Providers
- Organization subpart
- No
- Authorized official
- William Mcinnis, Owner(616) 320-1205
- License
- L947184 (MI)
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
18 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
- 2008-07-09
- Last updated
- 2026-06-02
- Certified
- 2026-06-02
Frequently asked questions
- What is William P. Mcinnis Psy.d, P.C.'s NPI number?
- William P. Mcinnis Psy.d, P.C.'s National Provider Identifier (NPI) is 1871756841, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is William P. Mcinnis Psy.d, P.C.?
- William P. Mcinnis Psy.d, P.C. is classified in the NPPES registry as Clinical Psychologist (Behavioral Health & Social Service Providers).
- Where is William P. Mcinnis Psy.d, P.C. located?
- William P. Mcinnis Psy.d, P.C.'s practice location on file with NPPES is 2845 44th St Sw Ste 120, Grandville, MI 49418-2678.
- What is William P. Mcinnis Psy.d, P.C.'s phone number?
- The practice phone number listed in the NPPES registry for William P. Mcinnis Psy.d, P.C. is (616) 320-1205.
- Does William P. Mcinnis Psy.d, P.C. accept Medicare?
- William P. Mcinnis Psy.d, P.C. is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Who is the authorized official for William P. Mcinnis Psy.d, P.C.?
- The authorized official listed on William P. Mcinnis Psy.d, P.C.'s NPPES record is William Mcinnis, Owner. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is William P. Mcinnis Psy.d, P.C.'s NPI active?
- Yes — William P. Mcinnis Psy.d, P.C.'s NPI (1871756841) is active in the NPPES registry as of the last update on 2026-06-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.