Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Andrew Thomas Assenmacher, M.D.

Sports Medicine (Orthopaedic Surgery) Physician in Monroe, MI · enumerated 2009 · practices at Frenchtown Orthopedic Group PC.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1578791240

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Registry record

Entity type Individual (Type 1)

Name Dr. Andrew Thomas Assenmacher

Credential M.D.

Sex Male

Practice address 1420 N Monroe St, Monroe, MI, 48162

Phone (734) 240-8480

Fax (734) 384-0469

Enumeration date Jul 1, 2009

Last updated in NPPES Jun 9, 2026

Taxonomy & licenses

207X00000X Orthopaedic Surgery Physician Allopathic & Osteopathic Physicians · License 4301095012 (MI) Secondary

207X00000X Orthopaedic Surgery Physician Allopathic & Osteopathic Physicians · License 35.129521 (OH) Secondary

207XX0005X Sports Medicine (Orthopaedic Surgery) Physician Allopathic & Osteopathic Physicians · License 4301095012 (MI) Primary

207XX0005X Sports Medicine (Orthopaedic Surgery) Physician Allopathic & Osteopathic Physicians · License 35.129521 (OH) Secondary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

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.

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Frequently asked questions

What is the NPI number for Andrew Assenmacher?

The National Provider Identifier (NPI) for Andrew Assenmacher is 1578791240, a Type 1 (individual) record in the CMS NPPES registry.

Where does Andrew Assenmacher practice?

The practice location on file with NPPES is in Monroe, MI. Providers can have multiple locations; NPPES lists the primary practice address.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-06-09.