NPPES file of Aug 9, 2026

Katharine Wolcott Markell, M.D.

Colon & Rectal Surgery Physician · Ft Sam Houston, TX

Katharine Wolcott Markell, M.D. is a colon & rectal surgery physician with a practice address in Ft Sam Houston, Texas, and NPI 1457328361, issued on Mar 1, 2006. Check the license on the Texas Medical Board; the federal record below is the public data PlainDoctor holds for this provider.

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

NPPES recordNPPES file of Aug 9, 2026
1457328361
Name
Katharine Wolcott Markell
Credential
M.D.
Primary taxonomy
Colon & Rectal Surgery Physician 208C00000X
License number
22776 NE
Self-reported in NPPES; status is on the state search
Practice location
3551 Roger Brooke Drive, Bldg 3600, Ft Sam Houston, TX 78234
Phone
(210) 916-1153
Enumerated
Mar 1, 2006
Record last updated
Mar 2, 2022
Fax
(210) 916-2202
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Verify Katharine Wolcott Markell in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersTexas Medical BoardCheck 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

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1 colon & rectal surgery physician records list a practice address in Ft Sam Houston

They are 1 of the 43 NPPES records with a practice address in Ft Sam Houston, and 209 colon & rectal surgery physician records in Texas. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 209 in Texas → Every provider in Ft Sam Houston →

Other colon & rectal surgery physician records in Texas

  1. Abier Abdelnaby, M.D.Dallas, TX1831312503
  2. Anthonia Adewole, M.DProsper, TX1598907925
  3. Amit Agarwal, M.D.Sugar Land, TX1215283429
  4. Mario Alcantara, M.D.San Antonio, TX1609039049
  5. Fadwa Ali, M.D.Dallas, TX1417398017
  6. Jason Allen, M.D.Fort Worth, TX1033328067
  7. Pastor Alvarado, MDMcAllen, TX1881775245
  8. Ronald Ambe, M.D.Houston, TX1063688711
  9. Punam Amin, MDHouston, TX1861824062
  10. Marcus Aquino, MDSeabrook, TX1043203128

Common questions

What is Katharine Wolcott Markell, M.D.'s NPI number?

Katharine Wolcott Markell, M.D.'s National Provider Identifier (NPI) is 1457328361, issued on Mar 1, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Katharine Wolcott Markell, M.D. located?

The NPPES record lists a practice address at 3551 Roger Brooke Drive, Bldg 3600, Ft Sam Houston, TX, 78234. Phone: (210) 916-1153. Providers update this record themselves, so call before visiting.

How can I verify Katharine Wolcott Markell, M.D.'s license?

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.

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

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.