NPPES file of Aug 9, 2026

Mark R. Matthews, M.D.

Anatomic Pathology Physician · Houston, TX

Mark R. Matthews, M.D. is an anatomic pathology physician with a practice address in Houston, Texas, and NPI 1083694418, issued on Jan 20, 2006. Check the license (Texas L0403, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2023 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1083694418
Name
Mark R. Matthews
Credential
M.D.
Primary taxonomy
Anatomic Pathology Physician 207ZP0101X
License number
L0403 TX
Self-reported in NPPES; status is on the state search
Practice location
4131 Directors Row, Houston, TX 77092
Phone
(877) 697-2447
Enumerated
Jan 20, 2006
Record last updated
Apr 19, 2023
Fax
(855) 697-2447
Medicare enrollment
Enrolled (PECOS I20251105002642); accepts Medicare assignment
Medical or professional school
Medical College Of Georgia School Of Medicine, 1994
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 4131 Directors Row

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

  1. Nicole Bender, M.D.Dermatopathology Physician1134515752
  2. Nyasha Bullock, M.D.Anatomic Pathology & Clinical Pathology Physician1932337631
  3. John Cangelosi, MDAnatomic Pathology & Clinical Pathology Physician1831393438
  4. Jason Gregorio, MDAnatomic Pathology & Clinical Pathology Physician1467643643
  5. Keagan Lee, M.D.Anatomic Pathology & Clinical Pathology Physician1750540613
  6. Howard Martin, MDDermatopathology (Pathology) Physician1366421927

Verify Mark R. Matthews in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersTexas Medical Board
    Search for license L0403
    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 Texas 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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No measured MIPS final score for 2023

CMS assigned the neutral MIPS final score of 75 without scoring Quality, Cost, Promoting Interoperability or Improvement Activities. It is an administrative threshold, so PlainDoctor does not compare it with measured clinicians.

Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).

Bills Medicare through one group practice

  1. Sagis PLLCHouston, TX

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

Mark R. Matthews among 157 anatomic pathology physician records in Texas

Mark R. Matthews, M.D. is one of 157 anatomic pathology physician records with a practice address in Texas. 63% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 4% of them.

  • NPI issued2006 · 4% of these records are older, 51% newer
  • In a Medicare fileYes · 63% of these records are
  • In the CMS Doctors and Clinicians fileYes · 57% of these records are
  • Graduated1994 · median 1998 among the 90 with a school on file
  • Record last updated2023 · 63% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207ZP0101X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Anatomic Pathology Physician providers in Texas

There are 157 anatomic pathology physician records in Texas.

The 8 anatomic pathology physician records with the nearest ZIP codes

  1. Thomas Roosth, M.D.Houston, TX 770721891151601
  2. Jennifer Ross, MDHouston, TX 770541508060195
  3. Julian Bryan, MDHouston, TX 770301154705077
  4. Eun Young KangHouston, TX 770301588398838
  5. Hsiang-Chih Lu, M.D., PH.D.Houston, TX 770301871944884
  6. Kiran MadwaniHouston, TX 770301861018772
  7. Esmeralda Marginean, MDHouston, TX 770301417420720
  8. Michelle McDonald, DOHouston, TX 770301558851949

Common questions

What is Mark R. Matthews, M.D.'s NPI number?

Mark R. Matthews, M.D.'s National Provider Identifier (NPI) is 1083694418, issued on Jan 20, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Mark R. Matthews, M.D. located?

The NPPES record lists a practice address at 4131 Directors Row, Houston, TX, 77092. Phone: (877) 697-2447. Providers update this record themselves, so call before visiting.

How can I verify Mark R. Matthews, M.D.'s license?

NPPES lists Texas license number L0403, as entered by the provider. Search the Texas Medical Board at https://profile.tmb.state.tx.us/Search.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

What is Mark R. Matthews, M.D.'s MIPS final score?

CMS assigned the neutral MIPS final score of 75 for 2023 without scoring any category, so it is not a measured result.

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.