Mark Anthony Williams, MD, PHD

Primary specialty

Otolaryngology PhysicianTaxonomy code 207Y00000X

License

42482 Issued in TN

Practice address

341 Wallace Rd Ste D
Nashville, TN 37211-8001

Phone

(615) 832-2200

Fax

(615) 832-2020

NPI assigned

Apr 25, 2007

Sex

Male

Sole proprietor

No

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 1

Addresses

Medicare fee-for-service enrollment

Enrolled in TN, SD, WI3 enrollments

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: Yes
• Hospice: Yes

Green means eligible to order or refer.

Enrollment records 3

Specialty

Otolaryngology

Education

University of Cincinnati College of Medicine, 2002

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Sanford Medical CenterGroup PAC ID 8325950215, 847 clinicians

Ear Nose and Throat Specialists of Nashville PLCGroup PAC ID 5698860682, 7 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Sanford Usd Medical Center Hospital, Sioux Falls, SD, CCN 430027

Merit-based Incentive Payment System (MIPS)

Final score

84.78 of 100Reported as group

Quality

78.77

Promoting interoperability

100

Improvement activities

40

Cost

70.49

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine, Doctor of Philosophy

State licenses

Practice roles

Locations

Interoperability endpoints

• FHIR API: https://fhir4.healow.com/fhir/r4/GIFHAA/Endpoint/GIFHAA

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.

• Ear Nose & Throat Specialists of Nashville, PLC

  • Otolaryngology Physician
  • Nashville, TN
  • NPI 1730388117
  Medicare reassignment Care Compare group NPD
• Sanford Medical Center

  • Family Medicine Physician
  • Sioux Falls, SD
  • NPI 1093090342
  Medicare reassignment Care Compare group NPD
• Columbia St. Mary'S Hospital Milwaukee, Inc

  • Multi-Specialty Clinic/Center
  • Milwaukee, WI
  • NPI 1023064482
  Medicare reassignment NPD
• Columbia St. Mary'S Hospital Milwaukee Inc

  • Psychiatric Hospital Unit
  • Mequon, WI
  • NPI 1417600909
  NPD
• Enticare PC

  • Plastic Surgery within the Head & Neck (Otolaryngology) Physician
  • Chandler, AZ
  • NPI 1710014410
  NPD
• Advanced Ear Nose & Throat Specialists, SC

  • Otolaryngology Physician
  • Miamisburg, OH
  • NPI 1811717887
  NPD (past)
• Columbia St. Mary'S Hospital Milwaukee, Inc

  • Multi-Specialty Clinic/Center
  • Mequon, WI
  • NPI 1710928221
  NPD (past)

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

• Sanford Medical Center

  • Air Ambulance
  • Sioux Falls, SD
  • NPI 1023299708

  Hospital

  Care Compare affiliation
• Sanford Medical Center

  • Family Medicine Physician
  • Sioux Falls, SD
  • NPI 1093090342

  Hospital

  Care Compare affiliation
• Sanford Medical Center

  • General Acute Care Hospital
  • Sioux Falls, SD
  • NPI 1821017880
  Care Compare affiliation

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1177459200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1760918400000",
    "number": "1972722288",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "10001 W INNOVATION DR STE 200",
            "city": "MILWAUKEE",
            "state": "WI",
            "postal_code": "532264851",
            "telephone_number": "888-938-3838",
            "fax_number": "888-919-1083"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "341 WALLACE RD STE D",
            "city": "NASHVILLE",
            "state": "TN",
            "postal_code": "372118001",
            "telephone_number": "615-832-2200",
            "fax_number": "615-832-2020"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "1310 W 22nd St",
            "address_purpose": "LOCATION",
            "city": "Sioux Falls",
            "state": "SD",
            "postal_code": "571051501",
            "country_code": "US",
            "telephone_number": "605-328-8200",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "2051 W Chandler Blvd Ste 5",
            "address_purpose": "LOCATION",
            "city": "Chandler",
            "state": "AZ",
            "postal_code": "852246239",
            "country_code": "US",
            "telephone_number": "480-214-9000",
            "fax_number": "480-214-9999",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "WILLIAMS",
        "first_name": "MARK",
        "middle_name": "ANTHONY",
        "name_prefix": "Dr.",
        "credential": "MD, PHD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2007-04-25",
        "last_updated": "2025-10-20",
        "certification_date": "2025-10-20",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207Y00000X",
            "taxonomy_group": "",
            "desc": "Otolaryngology",
            "state": "TN",
            "license": "42482",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Kiley Williams
• Kristine Louise Williams, CNP
• Krystal Williams
• Laura L. Williams, M.D
• Lawson Williams
• Melissa Williams
• Melissa Ann Williams, CCC-SLP
• Mildred Williams
• Molly Williams, M.S., CCC-SLP
• Molly Tashiro Williams, AGACNP-BC

• Otolaryngology Physician in Nashville, TN
• Providers in Nashville, TN by specialty
• Otolaryngology Physician in Tennessee

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Oct 20, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.