NPPES file of Aug 9, 2026

Mark Alexander Williams, M.D.

Anatomic Pathology & Clinical Pathology Physician · Richmond, VA

Mark Alexander Williams, M.D. is an anatomic pathology & clinical pathology physician with a practice address in Richmond, Virginia, and NPI 1952446015, issued on Feb 20, 2007. Check the license (Virginia 0101237794, as entered in NPPES) on the Virginia Department of Health Professions; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1952446015
Name
Mark Alexander Williams
Credential
M.D.
Primary taxonomy
Anatomic Pathology & Clinical Pathology Physician 207ZP0102X
License number
0101237794 VA
Self-reported in NPPES; status is on the state search
Practice location
5801 Bremo RD, Richmond, VA 23226
Phone
(804) 281-8100
Enumerated
Feb 20, 2007
Record last updated
Aug 1, 2011 (not updated in 15 years: call before relying on the address or phone)
Medicaid ID
1952446015 VA
Medicare enrollment
Enrolled (PECOS I20221216000002); accepts Medicare assignment
Medical or professional school
University Of Virginia School Of Medicine, 2007
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 5801 Bremo RD

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Elizabeth Aarons, MDPediatrics Physician1164623682
  2. Jane Abernathie, ACNPC-AGAcute Care Nurse Practitioner1972228377
  3. Nelson Airewele, M.DInternal Medicine Physician1740546944
  4. Ali Al-Saadoon, M.D.Internal Medicine Physician1316209067
  5. Kidist Alemu, MDPediatrics Physician1528077120
  6. Natalia AlesciCertified Registered Nurse Anesthetist1154026458

Verify Mark Alexander Williams in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersVirginia Department of Health Professions
    Search for license 0101237794
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Virginia license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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Bills Medicare through one group practice

  1. Monument Pathologists Inc.Richmond, VA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Mark Alexander Williams among 362 anatomic pathology & clinical pathology physician records in Virginia

Mark Alexander Williams, M.D. is one of 362 anatomic pathology & clinical pathology physician records with a practice address in Virginia. 50% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 57% of them.

  • NPI issued2007 · 57% of these records are older, 33% newer
  • In a Medicare fileYes · 50% of these records are
  • In the CMS Doctors and Clinicians fileYes · 45% of these records are
  • Graduated2007 · median 1998 among the 163 with a school on file
  • Record last updated2011 · 68% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207ZP0102X and a Virginia practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Anatomic Pathology & Clinical Pathology Physician providers in Virginia

There are 362 anatomic pathology & clinical pathology physician records in Virginia.

The 8 anatomic pathology & clinical pathology physician records with the nearest ZIP codes

  1. Clifton Bridges, MDRichmond, VA 232261194724856
  2. Melissa Burke, MDRichmond, VA 232261245224146
  3. David Capuzzi, MDRichmond, VA 232261114911021
  4. Harold Dunn, MDRichmond, VA 232261053305169
  5. Zach Ellis, MDRichmond, VA 232261962610931
  6. Elaine Flanders, MDRichmond, VA 232261043204159
  7. Matthew Graham, MDRichmond, VA 232261659584761
  8. John Harbour, M.D.Richmond, VA 232261871590109

Common questions

What is Mark Alexander Williams, M.D.'s NPI number?

Mark Alexander Williams, M.D.'s National Provider Identifier (NPI) is 1952446015, issued on Feb 20, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Mark Alexander Williams, M.D. located?

The NPPES record lists a practice address at 5801 Bremo RD, Richmond, VA, 23226. Phone: (804) 281-8100. Providers update this record themselves, so call before visiting.

How can I verify Mark Alexander Williams, M.D.'s license?

NPPES lists Virginia license number 0101237794, as entered by the provider. Search the Virginia Department of Health Professions at https://dhp.virginiainteractive.org/lookup/index. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.