Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. John R. Simmons, M.D.

Anatomic Pathology & Clinical Pathology Physician in Baton Rouge, LA · enumerated 2006.

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

National Provider Identifier

1982664397

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Registry record

Entity type Individual (Type 1)

Name Dr. John R. Simmons

Credential M.D.

Sex Male

Practice address 5339 Odonavan, Baton Rouge, LA, 70808

Phone (225) 766-4999

Fax (225) 767-4702

Enumeration date Mar 28, 2006

Last updated in NPPES Aug 13, 2015

Taxonomy & licenses

207ZP0102X Anatomic Pathology & Clinical Pathology Physician Allopathic & Osteopathic Physicians · License MD.14896R (LA) 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
1148181	Medicaid	LA	-

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

Is NPI 1982664397 active?

Yes, as of the latest NPPES snapshot, NPI 1982664397 is active (record last updated 2015-08-13).

How do I verify John Simmons's NPI record?

Cross-check NPI 1982664397 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-08-13.