NPPES file of Aug 9, 2026

John Nicolau, M.D.

Ophthalmology Physician · San Antonio, TX

John Nicolau, M.D. is an ophthalmology physician with a practice address in San Antonio, Texas, and NPI 1982808937, issued on Jun 13, 2007. Check the license (Texas M6803, 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 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1982808937
Name
John Nicolau
Credential
M.D.
Primary taxonomy
Ophthalmology Physician 207W00000X
License number
M6803 TX
Self-reported in NPPES; status is on the state search
Practice location
1100 N Main Ave, San Antonio, TX 78212
Phone
(210) 222-2154
Enumerated
Jun 13, 2007
Record last updated
Mar 27, 2019 (not updated in 7 years: call before relying on the address or phone)
Fax
(210) 227-6056
Medicaid IDs
1906315-06 TX
190631507 TX
Medicare enrollment
Enrolled (PECOS I20070823000122); accepts Medicare assignment
Medical or professional school
Texas Tech University Health Science Center School Of Medicine, 2003
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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8 nearest ophthalmology physician records → All 1,514 in Texas → Look up another NPI →

Also registered at 1100 N Main Ave

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

  1. Oday Alsheikh, M.D.Ophthalmology Physician1508070525
  2. Gary Borawski, ODOptometrist1033186580
  3. Barbara Ku, MDOphthalmology Physician1043363328
  4. Philip Smith, ODOptometrist1184690877
  5. Keith Williams, ODOptometrist1558336313

Verify John Nicolau in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersTexas Medical Board
    Search for license M6803    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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Bills Medicare through one group practice

  1. Chu Eye Institute, P.A.Fort Worth, TX

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

John Nicolau among 1,514 ophthalmology physician records in Texas

John Nicolau, M.D. is one of 1,514 ophthalmology physician records with a practice address in Texas. 81% 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 52% of them.

  • NPI issued2007 · 52% of these records are older, 39% newer
  • In a Medicare fileYes · 81% of these records are
  • In the CMS Doctors and Clinicians fileYes · 70% of these records are
  • Graduated2003 · median 2003 among the 1,052 with a school on file
  • Record last updated2019 · 60% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207W00000X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Ophthalmology Physician providers in Texas

There are 1,514 ophthalmology physician records in Texas.

All 1,514 in Texas → Every provider in San Antonio → Ophthalmology Physician nationwide →

The 8 ophthalmology physician records with the nearest ZIP codes

  1. Oday Alsheikh, M.D.San Antonio, TX 782121508070525
  2. Mary Arno, M.D.San Antonio, TX 782121083618433
  3. Barbara Ku, MDSan Antonio, TX 782121043363328
  4. Gilberto Aguirre, M.D.San Antonio, TX 782131437154168
  5. Richard Rodriguez, MDSan Antonio, TX 782111316903404
  6. Ricardo Sepulveda, MDSan Antonio, TX 782131013177799
  7. Roger Velasquez, M.D.San Antonio, TX 782131205154895
  8. David Abrams, MDSan Antonio, TX 782151881654341

Common questions

What is John Nicolau, M.D.'s NPI number?

John Nicolau, M.D.'s National Provider Identifier (NPI) is 1982808937, issued on Jun 13, 2007. An NPI identifies a provider in billing; it is not a license.

Where is John Nicolau, M.D. located?

The NPPES record lists a practice address at 1100 N Main Ave, San Antonio, TX, 78212. Phone: (210) 222-2154. Providers update this record themselves, so call before visiting.

How can I verify John Nicolau, M.D.'s license?

NPPES lists Texas license number M6803, 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. Medicare files from data.cms.gov. 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.