NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. William S Muse Jr., M.D.

Urology Physician in Knoxville, TN · enumerated 2005.

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

National Provider Identifier

1790785749

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Dr. William S Muse Jr.
Credential M.D.
Sex Male
Practice address 2001 Laurel Ave, Suite 502, Knoxville, TN, 37916
Phone (865) 522-6005
Fax (865) 546-5678
Enumeration date Jul 29, 2005
Last updated in NPPES Dec 7, 2007

Taxonomy & licenses

208800000X Urology Physician Allopathic & Osteopathic Physicians · License MD0000006000 (TN) 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
3106057 Other TN BLUE CROSS
3106067 Other TN BLUE CROSS
3158669 Medicaid TN -
1669416442 Other TN GROUP NPI
CI2260 Other TN RAILROAD MEDICARE

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 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.
What specialty is William Muse?
William Muse is registered in NPPES with the primary taxonomy of Urology Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-12-07.