Matthew Grenier
NPI 1477195360 · Addiction (Substance Use Disorder) Counselor · Flint, MI
Matthew Grenier is a Addiction (Substance Use Disorder) Counselor provider in Flint, MI (NPI 1477195360).
Provider details
- NPI number
- 1477195360
- Entity type
- Individual
- Primary specialty
- Addiction (Substance Use Disorder) CounselorBehavioral Health & Social Service Providers
- Sex
- Male
- Sole proprietor
- No
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
6 yrs in NPPES registry
- Profile completeness38% of score
83% 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
- 2019-10-11
- Last updated
- 2019-10-11
Frequently asked questions
- What is Matthew Grenier's NPI number?
- Matthew Grenier's National Provider Identifier (NPI) is 1477195360, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Matthew Grenier's specialty?
- Matthew Grenier is listed in the NPPES registry with a primary specialty of Addiction (Substance Use Disorder) Counselor (Behavioral Health & Social Service Providers).
- Where is Matthew Grenier located?
- Matthew Grenier's practice location on file with NPPES is 765 E Hamilton Ave, Flint, MI 48505-4707.
- What is Matthew Grenier's phone number?
- The practice phone number listed in the NPPES registry for Matthew Grenier is (810) 233-5340.
- Is Matthew Grenier's NPI active?
- Yes — Matthew Grenier's NPI (1477195360) is active in the NPPES registry as of the last update on 2019-10-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.