Nicholas Sirhan, CAA
NPI 1881493005 · Anesthesiologist Assistant · San Antonio, TX
Enrolled with Medicare as Practitioner - Anesthesiology Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Nicholas Sirhan, CAA is a Anesthesiologist Assistant provider in San Antonio, TX (NPI 1881493005).
Provider details
- NPI number
- 1881493005
- Entity type
- Individual
- Primary specialty
- Anesthesiologist AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- CAA
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
1 yr in NPPES registry
- Profile completeness38% of score
83% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2025-03-11
- Last updated
- 2025-03-11
- Certified
- 2025-03-11
Frequently asked questions
- What is Nicholas Sirhan's NPI number?
- Nicholas Sirhan's National Provider Identifier (NPI) is 1881493005, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nicholas Sirhan's specialty?
- Nicholas Sirhan is listed in the NPPES registry with a primary specialty of Anesthesiologist Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Nicholas Sirhan located?
- Nicholas Sirhan's practice location on file with NPPES is 19138 US Highway 281 N, San Antonio, TX 78258-4988.
- What is Nicholas Sirhan's phone number?
- The practice phone number listed in the NPPES registry for Nicholas Sirhan is (210) 804-5400.
- Does Nicholas Sirhan accept Medicare?
- Nicholas Sirhan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Nicholas Sirhan's NPI active?
- Yes — Nicholas Sirhan's NPI (1881493005) is active in the NPPES registry as of the last update on 2025-03-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.