Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Margaret M Barnes, M.D.

Radiation Oncology Physician in Fergus Falls, MN · enumerated 2006.

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

National Provider Identifier

1699726349

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Registry record

Entity type Individual (Type 1)

Name Margaret M Barnes

Credential M.D.

Sex Female

Practice address 712 S Cascade St, Fergus Falls, MN, 56537

Phone (218) 736-8477

Fax (218) 739-6742

Enumeration date May 15, 2006

Last updated in NPPES Feb 15, 2017

Taxonomy & licenses

2085R0001X Radiation Oncology Physician Allopathic & Osteopathic Physicians · License 6725A (WY) Secondary

2085R0001X Radiation Oncology Physician Allopathic & Osteopathic Physicians · License 11419 (MT) 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
P00406978	Other	MT	RAILROAD MEDICARE MT
0181831	Medicaid	MT	-
972121051071	Other	-	PREFERRED ONE
000097726	Other	MT	BLUE CROSS

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

Is NPI 1699726349 active?

Yes, as of the latest NPPES snapshot, NPI 1699726349 is active (record last updated 2017-02-15).

How do I verify Margaret Barnes's NPI record?

Cross-check NPI 1699726349 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 2017-02-15.