Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. William Carl Anderson, MD

Sports Medicine (Neuromusculoskeletal Medicine) Physician in Forsyth, MT · enumerated 2005 · practices at Forsyth Family Medicine PC.

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

National Provider Identifier

1083698740

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Registry record

Entity type Individual (Type 1)

Name Dr. William Carl Anderson

Credential MD

Sex Male

Practice address 281 N. 17th Avenue, Forsyth, MT, 59327

Phone (406) 346-2916

Fax (406) 346-7478

Enumeration date Dec 5, 2005

Last updated in NPPES Mar 18, 2010

Taxonomy & licenses

204C00000X Sports Medicine (Neuromusculoskeletal Medicine) Physician Allopathic & Osteopathic Physicians · License 4811 (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
0053329	Medicaid	MT	-
080179702	Other	MT	RAILROAD MEDICARE
000017060	Other	MT	BCBS OF MT

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

What specialty is William Anderson?

William Anderson is registered in NPPES with the primary taxonomy of Sports Medicine (Neuromusculoskeletal Medicine) Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

Other providers at this practice address

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Forsyth Family Medicine PC Clinic/Center · Forsyth, MT NPI 1437224243

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-03-18.