Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Michael F Grantham, MD

Diagnostic Radiology Physician in Mishawaka, IN · enumerated 2005 · practices at Radiology, Inc.

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

National Provider Identifier

1649264342

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Registry record

Entity type Individual (Type 1)

Name Michael F Grantham

Credential MD

Sex Male

Practice address 620 W Edison Rd, Suite 110, Mishawaka, IN, 46545

Phone (574) 258-1100

Fax (574) 258-1101

Enumeration date Sep 8, 2005

Last updated in NPPES May 16, 2013

Taxonomy & licenses

2085R0202X Diagnostic Radiology Physician Allopathic & Osteopathic Physicians · License 01051989 (IN) Primary

2085B0100X Body Imaging Physician Allopathic & Osteopathic Physicians · License 01051989 (IN) Secondary

2085N0700X Neuroradiology Physician Allopathic & Osteopathic Physicians · License 01051989 (IN) Secondary

2085N0904X Nuclear Radiology Physician Allopathic & Osteopathic Physicians · License 01051989 (IN) Secondary

2085P0229X Pediatric Radiology Physician Allopathic & Osteopathic Physicians · License 01051989 (IN) Secondary

2085R0203X Therapeutic Radiology Physician Allopathic & Osteopathic Physicians · License 01051989 (IN) Secondary

2085R0204X Vascular & Interventional Radiology Physician Allopathic & Osteopathic Physicians · License 01051989 (IN) Secondary

2085U0001X Diagnostic Ultrasound Physician Allopathic & Osteopathic Physicians · License 01051989 (IN) Secondary

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

Other identifiers

Identifier	Type	State	Issuer
200250020	Medicaid	IN	-

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.

Read the full guide → Validate an NPI →

Frequently asked questions

What is the NPI number for Michael Grantham?

The National Provider Identifier (NPI) for Michael Grantham is 1649264342, a Type 1 (individual) record in the CMS NPPES registry.

Where does Michael Grantham practice?

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

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-05-16.