Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Steven A Wahlen, M.D.

Radiation Oncology Physician in Chico, CA · enumerated 2006.

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

National Provider Identifier

1457308769

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Registry record

Entity type Individual (Type 1)

Name Steven A Wahlen

Credential M.D.

Sex Male

Practice address 265 Cohasset Rd, Suite 140, Chico, CA, 95926

Phone (530) 891-8787

Fax (530) 898-9647

Enumeration date May 30, 2006

Last updated in NPPES Mar 7, 2023

Taxonomy & licenses

2085R0001X Radiation Oncology Physician Allopathic & Osteopathic Physicians · License RHL1388296 (CA) 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
00G701900	Medicaid	CA	-
G70190	Other	CA	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.

Read the full guide → Validate an NPI →

Frequently asked questions

Is NPI 1457308769 active?

Yes, as of the latest NPPES snapshot, NPI 1457308769 is active (record last updated 2023-03-07).

How do I verify Steven Wahlen's NPI record?

Cross-check NPI 1457308769 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 2023-03-07.