Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Louis T Riley, M.D.

Q: What is the NPI number for Louis Riley?

The National Provider Identifier (NPI) for Louis Riley is 1891791471, a Type 1 (individual) record in the CMS NPPES registry.

Obstetrics & Gynecology Physician in Smyrna, TN · enumerated 2005.

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

National Provider Identifier

1891791471

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Louis T Riley

Credential M.D.

Sex Male

Practice address Smyrna, TN, 37167

Phone (615) 223-0200

Fax (615) 223-8704

Enumeration date Jun 28, 2005

Last updated in NPPES Mar 25, 2024

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

207V00000X Obstetrics & Gynecology Physician Allopathic & Osteopathic Physicians · License 21439 (KY) Secondary

207V00000X Obstetrics & Gynecology Physician Allopathic & Osteopathic Physicians · License 26222 (TN) 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
3089664	Medicaid	TN	-
3726680	Medicaid	TN	-

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

Where does Louis Riley practice?

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

What is the NPI number for Louis Riley?

The National Provider Identifier (NPI) for Louis Riley is 1891791471, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Richard Huddleston Obstetrics & Gynecology Physician · Smyrna, TN NPI 1891792784 Bryan Kozinski Family Medicine Physician · Smyrna, TN NPI 1265427553 Peter Cobb Family Medicine Physician · Smyrna, TN NPI 1336134501 Denise Steffey Pharmacist · Smyrna, TN NPI 1710974142 Medical Group-Stonecrest Inc Internal Medicine Physician · Smyrna, TN NPI 1184611501 Hallmark Medical Group Internal Medicine Physician · Smyrna, TN NPI 1023079472 Kimberly King Obstetrics & Gynecology Physician · Smyrna, TN NPI 1588628838 Cedar Medical Group, PC Internal Medicine Physician · Smyrna, TN NPI 1043276322

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-03-25.