William Mcinnis, PSY D
NPI 1427168285 · Psychologist · Grand Rapids, MI
Enrolled with Medicare as Practitioner - Clinical Psychologist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Mcinnis, PSY D is a Psychologist provider in Grand Rapids, MI (NPI 1427168285).
Provider details
- NPI number
- 1427168285
- Entity type
- Individual
- Primary specialty
- PsychologistBehavioral Health & Social Service Providers
- Credential
- PSY D
- Sex
- Male
- Sole proprietor
- No
- License
- 6301007738 (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
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
- 2006-08-30
- Last updated
- 2007-07-08
Frequently asked questions
- What is William Mcinnis's NPI number?
- William Mcinnis's National Provider Identifier (NPI) is 1427168285, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Mcinnis's specialty?
- William Mcinnis is listed in the NPPES registry with a primary specialty of Psychologist (Behavioral Health & Social Service Providers).
- Where is William Mcinnis located?
- William Mcinnis's practice location on file with NPPES is 640 Three Mile Rd Nw Suite 101, Grand Rapids, MI 49544.
- What is William Mcinnis's phone number?
- The practice phone number listed in the NPPES registry for William Mcinnis is (616) 785-8900.
- Does William Mcinnis accept Medicare?
- William Mcinnis is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Mcinnis's NPI active?
- Yes — William Mcinnis's NPI (1427168285) 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.