NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Mark Anthony Williams, MD, PHD

Otolaryngology Physician in Nashville, TN · enumerated 2007 · practices at Ear Nose & Throat Specialists of Nashville, Plc.

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

National Provider Identifier

1972722288

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Dr. Mark Anthony Williams
Credential MD, PHD
Sex Male
Practice address 341 Wallace Rd Ste D, Nashville, TN, 37211
Phone (615) 832-2200
Fax (615) 832-2020
Enumeration date Apr 25, 2007
Last updated in NPPES Oct 20, 2025

Taxonomy & licenses

207Y00000X Otolaryngology Physician Allopathic & Osteopathic Physicians · License 42482 (TN) Primary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

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

What is the NPI number for Mark Williams?
The National Provider Identifier (NPI) for Mark Williams is 1972722288, a Type 1 (individual) record in the CMS NPPES registry.
Where does Mark Williams practice?
The practice location on file with NPPES is in Nashville, TN. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-10-20.