Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Ann Marie Blacktop, LMSW
Clinical Social Worker in Hart, MI · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1689605230
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Registry record
Entity type Individual (Type 1)
Name Ann Marie Blacktop
Credential LMSW
Sex Female
Practice address 611 E Main St, Hart, MI, 49420
Phone (231) 873-5675
Fax (231) 873-4805
Enumeration date Jul 5, 2006
Last updated in NPPES May 22, 2009
Taxonomy & licenses
1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License AB033570 (MI) Primary
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 800F410320 | Other | MI | BCBSMI |
| 383119096 | Other | MI | TAX ID |
| 8008974220 | Other | MI | BCBS |
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.
Frequently asked questions
What specialty is Ann Blacktop?
Ann Blacktop is registered in NPPES with the primary taxonomy of Clinical Social Worker. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
Other providers at this practice address
Browse all → Jennifer Tate Medical Physician Assistant · Hart, MI NPI 1881646610 Rudy Ochs Family Medicine Physician · Hart, MI NPI 1669418356 Cynthia Ochs Geriatric Medicine (Family Medicine) Physician · Hart, MI NPI 1811926744 Ronald Graeser Family Medicine Physician · Hart, MI NPI 1922030063 Mike Kozminski Urology Physician · Hart, MI NPI 1093816316 Mercy Health Partners Family Medicine Physician · Hart, MI NPI 1972734200 Christopher Ulrich Medical Physician Assistant · Hart, MI NPI 1437472719 Lakeshore Community Hospital, Inc. Family Medicine Physician · Hart, MI NPI 1174889604
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-05-22.