Registry record
- NPI
- 1518455963
- Profession
- Physician Assistant (PA)
- Specialty
- Physician Assistant (363A00000X)
- Practice address
- 18587 Sigma Rd Ste 260
San Antonio, TX 78258 - Phone
- 2103144564
- In the registry since
- May 1, 2018
- Last NPPES update
- August 20, 2019
- Sole proprietor
- Yes
- License
- PA11958 (TX)
At this location
One other provider in our data lists 18587 Sigma Rd Ste 260, San Antonio as a practice address:
- Robin Santamaria, APRN
Psychiatric/Mental Health Nurse Practitioner · NPI 1306395447
In context
The NPI number of Caroline Horton is 1518455963. They are a Physician Assistant in San Antonio, Texas.
Caroline Horton is one of 882 Physician Assistants in San Antonio and one of 11,405 across Texas in our data. San Antonio ranks #3 among Texas cities in our dataset, with 3,972 NP and PA providers.
The NPI has been in the federal registry for 8 years, since May 1, 2018.
Frequently asked questions
What is NPI 1518455963?
NPI 1518455963 is the 10-digit National Provider Identifier assigned to Caroline Horton, a Physician Assistant practicing in San Antonio, Texas. The record has been in the NPPES registry since May 1, 2018.
How do I verify this provider?
Cross-check NPI 1518455963 in the official CMS registry at npiregistry.cms.hhs.gov, and confirm license PA11958 with the TX licensing board. You can also run the number through our free NPI validator to confirm its checksum.
Is this information current?
This profile reflects the June 2026 NPPES data file. NPPES lists the record's last update as August 20, 2019. We refresh our data each month when CMS publishes a new file.
Data: NPPES public registry, June 2026 file. Not medical advice. Verify independently before care or credentialing decisions. Errors in the source record can be corrected at nppes.cms.hhs.gov; see our corrections page.