Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Stephen P. Allen, M.D.

Medical Oncology Physician in Saint Louis, MO · enumerated 2005.

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

National Provider Identifier

1912999160

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Registry record

Entity type Individual (Type 1)

Name Stephen P. Allen

Credential M.D.

Sex Male

Practice address 10004 Kennerly Rd, 137a, Saint Louis, MO, 63128

Phone (314) 842-7301

Fax (314) 842-7308

Enumeration date Aug 15, 2005

Last updated in NPPES Mar 17, 2018

Taxonomy & licenses

207RX0202X Medical Oncology Physician Allopathic & Osteopathic Physicians · License R1C00 (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
201767902	Medicaid	MO	-

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 Stephen Allen's NPI record?

Cross-check NPI 1912999160 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1912999160 active?

Yes, as of the latest NPPES snapshot, NPI 1912999160 is active (record last updated 2018-03-17).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-03-17.