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

Geoffrey J Flattmann, MD

Specialist in Natchez, MS · enumerated 2006 · practices at Geoffrey J Flattmann MD Facs Pllc.

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

National Provider Identifier

1801845136

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Registry record

Entity type Individual (Type 1)

Name Geoffrey J Flattmann

Credential MD

Sex Male

Practice address Natchez, MS, 39120

Phone (601) 445-8667

Fax (601) 445-8767

Enumeration date May 5, 2006

Last updated in NPPES Feb 9, 2022

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

Taxonomy & licenses

174400000X Specialist Other Service Providers · License 16771 (MS) 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
1684147	Medicaid	LA	-
022612	Other	LA	MEDICAL LICENSE
00122080	Medicaid	MS	-
16771	Other	MS	MEDICAL LICENSE

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

How do I verify Geoffrey Flattmann's NPI record?

Cross-check NPI 1801845136 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1801845136 active?

Yes, as of the latest NPPES snapshot, NPI 1801845136 is active (record last updated 2022-02-09).

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Geoffrey J Flattmann MD Facs Pllc Specialist · Natchez, MS NPI 1710177035

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-02-09.