Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Troy Robert Keoni Williams, M.D.

Orthopaedic Surgery Physician in Warren, MI · enumerated 2007.

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

National Provider Identifier

1821209495

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Registry record

Entity type Individual (Type 1)

Name Dr. Troy Robert Keoni Williams

Credential M.D.

Sex Male

Practice address 11012 E 13 Mile Rd, Suite 112, Warren, MI, 48093

Phone (586) 573-6880

Fax (586) 573-2562

Enumeration date May 25, 2007

Last updated in NPPES Nov 8, 2013

Taxonomy & licenses

207X00000X Orthopaedic Surgery Physician Allopathic & Osteopathic Physicians · License 4301086207 (MI) Primary

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
0E06376	Other	MI	MEDICARE GROUP NUMBER
700E063760	Other	MI	BCBS OF MICHIGAN GROUP NUMBER
0951909	Other	MI	BCBS PIN
1184828451	Other	MI	FACILITY NPI
1821209495	Medicaid	MI	-

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

Where does Troy Williams practice?

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

What is the NPI number for Troy Williams?

The National Provider Identifier (NPI) for Troy Williams is 1821209495, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-11-08.