NPPES file of Aug 9, 2026

Mark W. Nelson, MD

Rheumatology Physician · San Antonio, TX

Mark W. Nelson, MD is a rheumatology physician with a practice address in San Antonio, Texas, and NPI 1538140090, issued on Nov 10, 2005. Check the license (Texas G7857, as entered in NPPES) 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
1538140090
Name
Mark W. Nelson
Credential
MD
Primary taxonomy
Rheumatology Physician 207RR0500X
License number
G7857 TX
Self-reported in NPPES; status is on the state search
Practice location
3338 Oakwell Court, San Antonio, TX 78218
Phone
(210) 656-5000
Enumerated
Nov 10, 2005
Record last updated
Oct 22, 2007 (not updated in 19 years: call before relying on the address or phone)
Fax
(210) 656-7892
Medicaid ID
114876902 TX
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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8 nearest rheumatology physician records → All 545 in Texas → Look up another NPI →

Also registered at 3338 Oakwell Court

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

  1. George Best, M.D.Urology Physician1053383620
  2. James Coleman, DDSOral and Maxillofacial Surgery (Dentist)1063539724
  3. David Sandercock, DOFamily Medicine Physician1871672436
  4. Jeffrey Wert, DDSOral and Maxillofacial Surgery (Dentist)1376660035

Verify Mark W. Nelson in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersTexas Medical Board
    Search for license G7857    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

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Mark W. Nelson among 545 rheumatology physician records in Texas

Mark W. Nelson, MD is one of 545 rheumatology physician records with a practice address in Texas. 87% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2005, is newer than 0% of them.

  • NPI issued2005 · 0% of these records are older, 90% newer
  • In a Medicare fileNo · 87% of these records are
  • In the CMS Doctors and Clinicians fileNo · 77% of these records are
  • Record last updated2007 · 46% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RR0500X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Rheumatology Physician providers in Texas

There are 545 rheumatology physician records in Texas. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 545 in Texas → Every provider in San Antonio → Rheumatology Physician nationwide →

The 8 rheumatology physician records with the nearest ZIP codes

  1. Kenneth Desrosier, M.D.San Antonio, TX 782171568447563
  2. Jessica Schaefer, DOSan Antonio, TX 782171912014812
  3. Joshua Stolow, M. D.San Antonio, TX 782171588663371
  4. Francis Williams, M.D.San Antonio, TX 782171275519449
  5. John Huff, MD, PHDSan Antonio, TX 782161912978933
  6. Rita Cuevas, MDSan Antonio, TX 782151689653917
  7. Aaron Garza Romero, M.D.San Antonio, TX 782141912294976
  8. Hilda Draeger, M.D.San Antonio, TX 782231649361627

Common questions

What is Mark W. Nelson, MD's NPI number?

Mark W. Nelson, MD's National Provider Identifier (NPI) is 1538140090, issued on Nov 10, 2005. An NPI identifies a provider in billing; it is not a license.

Where is Mark W. Nelson, MD located?

The NPPES record lists a practice address at 3338 Oakwell Court, San Antonio, TX, 78218. Phone: (210) 656-5000. Providers update this record themselves, so call before visiting.

How can I verify Mark W. Nelson, MD's license?

NPPES lists Texas license number G7857, 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.

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.