Gregory Matzelle, M.A., L.M.S.W.
NPI 1639322647 · Clinical Social Worker · Grand Blanc, MI
Gregory Matzelle, M.A., L.M.S.W. is a Clinical Social Worker provider in Grand Blanc, MI (NPI 1639322647).
Provider details
- NPI number
- 1639322647
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- M.A., L.M.S.W.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 6801015188 (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
17 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
- 2008-11-04
- Last updated
- 2008-11-04
Frequently asked questions
- What is Gregory Matzelle's NPI number?
- Gregory Matzelle's National Provider Identifier (NPI) is 1639322647, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gregory Matzelle's specialty?
- Gregory Matzelle is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Gregory Matzelle located?
- Gregory Matzelle's practice location on file with NPPES is 10785 S. Saginaw St., Grand Blanc, MI 48439.
- What is Gregory Matzelle's phone number?
- The practice phone number listed in the NPPES registry for Gregory Matzelle is (810) 695-0055.
- Is Gregory Matzelle's NPI active?
- Yes — Gregory Matzelle's NPI (1639322647) is active in the NPPES registry as of the last update on 2008-11-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.