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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. MARK ANTHONY WILLIAMS MD, PHD
NPI 1972722288
Otolaryngology in Nashville, TN

Active since April 25, 2007PECOS EnrolledAccepts Medicare Assignment
341 WALLACE RD STE D, NASHVILLE, TN 37211(888) 938-3838(888) 919-1083 Get Directions Write a Review

NPPES record last updated: October 13, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Oct 13, 2026, Sep 19, 2025, Feb 10, 2025 and 1 more (4 updates tracked since 2024).

About Dr. Mark Anthony Williams Md, Phd NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. MARK ANTHONY WILLIAMS MD, PHD (NPI 1972722288) is an individual otolaryngology provider in Nashville, Tennessee, licensed in Tennessee (42482) and active in the NPI registry since April 2007. He is enrolled in Medicare PECOS, is affiliated with Sanford Usd Medical Center, and maintains 2 additional practice locations.

NPPES Registry Identity

NPI1972722288
Entity TypeIndividualMale
Primary Taxonomy207Y00000X
Provider Legal NameDR. MARK ANTHONY WILLIAMSCredential: MD, PHD
Location Address341 WALLACE RD STE DNashville, TN 37211-8001
Mailing Address10001 W Innovation Dr Ste 200Milwaukee, WI 53226-4851 · (888) 938-3838 · Fax (888) 919-1083
Phone(888) 938-3838
Fax(888) 919-1083
Sole ProprietorNo
Medical School CMSUniversity Of Cincinnati College Of MedicineGraduated 2002
Enumeration DateApril 25, 2007
Last NPPES UpdateOctober 13, 20264 updates tracked since enumeration
NPPES CertifiedOctober 13, 2026
✔ NPI 1972722288 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOtolaryngologyAllopathic & Osteopathic Physicians
Taxonomy Code207Y00000X
License✔ Licensed in TN · 42482
Definition
An otolaryngologist-head and neck surgeon provides comprehensive medical and surgical care for patients with diseases and disorders that affect the ears, nose, throat, the respiratory and upper alimentary systems and related structures of the head and neck. An otolaryngologist diagnoses and provides medical and/or surgical therapy or prevention of diseases, allergies, neoplasms, deformities, disorders and/or injuries of the ears, nose, sinuses, throat, respiratory and upper alimentary systems, face, jaws and the other head and neck systems. Head and neck oncology, facial plastic and reconstructive surgery and the treatment of disorders of hearing and voice are fundamental areas of expertise.
341 WALLACE RD STE D, Nashville, TN 37211
Open in Google Maps ↗

Secondary Practice Locations 2

Location 11310 W 22nd StSioux Falls, SD 57105-1501 · Phone (605) 328-8200
Location 22051 W Chandler Blvd Ste 5Chandler, AZ 85224-6239 · Phone (480) 214-9000 · Fax (480) 214-9999

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Arkansas Health & Wellness, Ambetter Health, Ambetter of Alabama and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Mark Anthony Williams Md, Phd is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID8820183247
PECOS Enrollment IDI20071001000357, I20240730003284
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

3

Medicare enrollment records show Mark Williams reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Ear Nose & Throat Specialists Of Nashville, Plc
11 mi
Otolaryngology
3333 ASPEN GROVE DR STE 100
Franklin, TN 37067
  • Reassigned Medicare billing, Tennessee enrollment
  • 3 clinicians in this Medicare group
NPI 1730388117 (888) 938-3838
Columbia St. Mary's Hospital Milwaukee, Inc
486 mi
Multi-Specialty
2350 N LAKE DR
Milwaukee, WI 53211
  • Reassigned Medicare billing, Wisconsin enrollment
  • Medicare enrollment name: Columbia St Marys Hospital Milwaukee Inc
  • 856 clinicians in this Medicare group
NPI 1023064482 (414) 585-1000
Sanford Medical Center
738 mi
Rural Health
108 S MAIN ST
Lennox, SD 57039
  • Reassigned Medicare billing, South Dakota enrollment
  • 1,097 clinicians in this Medicare group
NPI 1518284264 (605) 647-2841

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 8

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
48 services35 patients
Test for eardrum and muscle function 92550
This test assesses the health of your eardrum and muscles linked to hearing. A small device is placed in your ear that creates pressure changes and sounds. Your ear's responses are recorded to determine if they are functioning properly.
39 services39 patients
Placement of ear probe for computerized measurement of repeated sounds with interpretation and report 92588
This procedure involves placing a probe in your ear to measure how it responds to repeated sounds. The data is then interpreted by a computer to assess your hearing health. The findings are compiled into a report for further evaluation.
34 services33 patients
Comprehensive hearing and speech recognition test 92557
A comprehensive hearing and speech recognition test assesses your ability to hear and understand spoken words. It includes hearing tests to check for issues with sound perception and speech tests to evaluate your word recognition. It's a crucial step in identifying any hearing or speech problems.
32 services32 patients
Test for hearing various pitches using earphone and device placed against the bone 92553
This is a hearing test that checks your ability to hear different pitches or frequencies. It involves wearing earphones and placing a device against your bone, usually behind the ear. It helps identify any hearing issues you might have.
19 services19 patients
Test to assess middle ear function 92567
A test to assess middle ear function, also known as an impedance audiometry, helps evaluate how well your middle ear works. It measures the movement of your eardrum in response to changes in air pressure. This can help identify issues like fluid build-up, ear infections, or eardrum perforations.
18 services18 patients

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Sanford Usd Medical Center

Acute Care Hospitals · Sioux Falls, SD
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number430027
Location1305 W 18th St Post Office Box 5039Sioux Falls, SD 57117 · Minnehaha County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 37211 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$121.80 typical visit price
range $52.64 – $160.89
Typical copayment $30.45 (range $13.16 – $40.22)
Most-billed visit code 99204
Established Patient
$66.01 typical visit price
range $16.72 – $131.41
Typical copayment $16.50 (range $4.18 – $32.85)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Referred Medical Equipment & Supplies CMS DME claims 10

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Tubing with integrated heating element for use with positive airway pressure device A4604
DME-Other DME · category DE001N
4 suppliers14 claims14 services$34.89 avg. paid by Medicare
Full face mask used with positive airway pressure device, each A7030
DME-Other DME · category DE001N
3 suppliers19 claims19 services$76.30 avg. paid by Medicare
Face mask interface, replacement for full face mask, each A7031
DME-Other DME · category DE001N
3 suppliers17 claims51 services$30.92 avg. paid by Medicare
Nasal interface (mask or cannula type) used with positive airway pressure device, with or without head strap A7034
DME-Other DME · category DE001N
5 suppliers13 claims13 services$47.23 avg. paid by Medicare
Headgear used with positive airway pressure device A7035
DME-Other DME · category DE001N
5 suppliers18 claims18 services$16.56 avg. paid by Medicare
Tubing used with positive airway pressure device A7037
DME-Other DME · category DE001N
3 suppliers17 claims17 services$13.31 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 6

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

MUSTAFA MUHAMMAD PA-C
Physician Assistant
341 WALLACE RD STE D
NASHVILLE, TN 37211
Davidson County (888) 938-3838
DR. LAUREN BRADEN M.D.
Otolaryngology
341 WALLACE RD STE D
NASHVILLE, TN 37211
Davidson County (615) 832-2200
RUSSELL DEAN PULLEN PA
Physician Assistant
341 WALLACE RD STE D
NASHVILLE, TN 37211
Davidson County (615) 832-2200
MADELINE A ERICKSON PA-C
Physician Assistant
341 WALLACE RD STE D
NASHVILLE, TN 37211
Davidson County (888) 938-3838
JACKIE SUSNNE WINFREY APN
Nurse Practitioner
341 WALLACE RD STE D
NASHVILLE, TN 37211
Davidson County (615) 832-2200
NICOLE DIANE WISSING PA-C
Physician Assistant
341 WALLACE RD STE D
NASHVILLE, TN 37211
Davidson County (615) 832-2200

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Mark Williams's NPI number?

The NPI number for Mark Williams is 1972722288. It was assigned to this individual provider in the NPPES registry on April 25, 2007.

Where is Mark Williams located?

Mark Williams practices at 341 Wallace Rd Ste D, Nashville, TN 37211. The listed phone number is (888) 938-3838.

What is Mark Williams's specialty?

The primary specialty registered for this NPI is Otolaryngology with taxonomy code 207Y00000X.

Is Mark Williams enrolled in Medicare?

Yes. Mark Williams is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for Mark Williams's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Mark Williams reassigns Medicare benefits to 3 organizations: Ear Nose & Throat Specialists Of Nashville, Plc (Franklin, TN), Columbia St. Mary's Hospital Milwaukee, Inc (Milwaukee, WI) and Sanford Medical Center (Lennox, SD). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Mark Williams's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Mark Williams accept?

Health plans from Ambetter Health, Ambetter from Arkansas Health & Wellness, Ambetter of Alabama, Ambetter of North Carolina and Ambetter of Tennessee and 10 other insurers list Mark Williams as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Mark Williams affiliated with any hospitals?

According to CMS data, Mark Williams is affiliated with Sanford Usd Medical Center.

When was this NPI record last updated?

The NPPES record for Mark Williams was last updated on October 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.