Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Gregg Warren, DO

Q: What is the NPI number for Gregg Warren?

The National Provider Identifier (NPI) for Gregg Warren is 1184651366, a Type 1 (individual) record in the CMS NPPES registry.

Diagnostic Radiology Physician in Troy, MI · enumerated 2006.

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

National Provider Identifier

1184651366

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Registry record

Entity type Individual (Type 1)

Name Dr. Gregg Warren

Credential DO

Sex Male

Practice address 44201 Dequindre Rd, Troy, MI, 48085

Phone (248) 964-5190

Fax (248) 964-5199

Enumeration date Jun 26, 2006

Last updated in NPPES Jul 21, 2022

Taxonomy & licenses

2085R0202X Diagnostic Radiology Physician Allopathic & Osteopathic Physicians · License 5101011119 (MI) Primary

174400000X Specialist Other Service Providers · License 5101011119 (MI) Secondary

DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO credential

Other identifiers

Identifier	Type	State	Issuer
1184651366	Medicaid	MI	-
700F314390	Other	MI	BLUE SHIELD
700F281060	Other	MI	BLUE CARE NETWORK

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 Gregg Warren?

The National Provider Identifier (NPI) for Gregg Warren is 1184651366, a Type 1 (individual) record in the CMS NPPES registry.

Where does Gregg Warren practice?

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

Other providers at this practice address

Browse all →

Mary Guerra Family Nurse Practitioner · Troy, MI NPI 1801892468 Tiffany Potts Physician Assistant · Troy, MI NPI 1932100203 Paul Gryzenia Vascular & Interventional Radiology Physician · Troy, MI NPI 1255325262 Ruxandra Danciu Physician Assistant · Troy, MI NPI 1053306167 Ming Xie Anatomic Pathology & Clinical Pathology Physician · Troy, MI NPI 1972591824 Jamie Alberty Medical Physician Assistant · Troy, MI NPI 1306827555 Philip Kilanowski-Doroh Emergency Medicine Physician · Troy, MI NPI 1033192059 Chadi Ibrahim Hospitalist Physician · Troy, MI NPI 1134102072

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-07-21.