Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. George Phelan Ahlering, MD

Gynecology Physician in Chesterfield, MO · enumerated 2006.

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

National Provider Identifier

1851334957

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Registry record

Entity type Individual (Type 1)

Name Dr. George Phelan Ahlering

Credential MD

Sex Male

Practice address 16216 Baxter Rd, Suite 100, Chesterfield, MO, 63017

Phone (636) 449-4700

Fax (636) 449-2596

Enumeration date Jun 14, 2006

Last updated in NPPES Oct 16, 2007

Taxonomy & licenses

207VG0400X Gynecology Physician Allopathic & Osteopathic Physicians · License R2D12 (MO) 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
AA2119293	Other	-	D E A NUMBER
R2D12	Other	MO	MEDICAL LICENSE,PHYS&SURG
26134	Other	MO	B N D D NUMBER
869736	Other	-	A B O G

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 George Ahlering practice?

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

What is the NPI number for George Ahlering?

The National Provider Identifier (NPI) for George Ahlering is 1851334957, 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 2007-10-16.