NPPES file of Aug 9, 2026

Nicholas Sirhan, CAA

Anesthesiologist Assistant · San Antonio, TX

Nicholas Sirhan, CAA is an anesthesiologist assistant with a practice address in San Antonio, Texas, and NPI 1881493005, issued on Mar 11, 2025. Check the license with the Texas board that licenses this profession; 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
1881493005
Name
Nicholas Sirhan
Credential
CAA
Primary taxonomy
Anesthesiologist Assistant 367H00000X
Practice location
19138 US Highway 281 N, San Antonio, TX 78258
Phone
(210) 804-5400
Enumerated
Mar 11, 2025
Record last updated
Mar 11, 2025
Medicare enrollment
Enrolled (PECOS I20250606001912); accepts Medicare assignment
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 anesthesiologist assistant records → All 503 in Texas → Look up another NPI →

Also registered at 19138 US Highway 281 N

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

  1. Anagha ElatiAnesthesiologist Assistant1053291104
  2. Darrell GerikPhysical Therapist1326038340
  3. Lauren Karbach, M.D.Surgery of the Hand (Surgery) Physician1013350164
  4. John ReddellPhysical Therapist1780520924
  5. Hayley SladecekAnesthesiologist Assistant1710718267

Verify Nicholas Sirhan in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Texas board licenses this professionCheck 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
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Bills Medicare through 2 group practices

  1. Austin Anesthesiology Group PLLCSan Marcos, TX
  2. The San Antonio Orthopaedic Group LLPSan Antonio, TX

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

Nicholas Sirhan among 503 anesthesiologist assistant records in Texas

Nicholas Sirhan, CAA is one of 503 anesthesiologist assistant records with a practice address in Texas. 84% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2025, is newer than 81% of them.

  • NPI issued2025 · 81% of these records are older, 10% newer
  • In a Medicare fileYes · 84% of these records are
  • In the CMS Doctors and Clinicians fileYes · 86% of these records are
  • Graduated2025 · median 2020 among the 433 with a school on file
  • Record last updated2025 · 33% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 367H00000X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Anesthesiologist Assistant providers in Texas

There are 503 anesthesiologist assistant records in Texas.

All 503 in Texas → Every provider in San Antonio → Anesthesiologist Assistant nationwide →

The 8 anesthesiologist assistant records with the nearest ZIP codes

  1. Anagha ElatiSan Antonio, TX 782581053291104
  2. Farahnaz ShafieySan Antonio, TX 782581073134151
  3. Hayley SladecekSan Antonio, TX 782581710718267
  4. Cameron Combs, AASan Antonio, TX 782471427676667
  5. Robert Wehner, CRNASan Antonio, TX 782321073906566
  6. Zukhruf Ali, AASan Antonio, TX 782161952977985
  7. Jack Aulbach, CAASan Antonio, TX 782161659200939
  8. Ariel Ayala, CAASan Antonio, TX 782161316585284

Common questions

What is Nicholas Sirhan, CAA's NPI number?

Nicholas Sirhan, CAA's National Provider Identifier (NPI) is 1881493005, issued on Mar 11, 2025. An NPI identifies a provider in billing; it is not a license.

Where is Nicholas Sirhan, CAA located?

The NPPES record lists a practice address at 19138 US Highway 281 N, San Antonio, TX, 78258. Phone: (210) 804-5400. Providers update this record themselves, so call before visiting.

How can I verify Nicholas Sirhan, CAA's license?

Search the Texas board that licenses this profession; the NPPES record confirms identity only.

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.