NPI Atlas

Katharine Johanna Wiswall, PA-C

Physician Assistant in San Antonio, Texas. NPI 1376282236.

NPI1376282236

Registry record

NPI
1376282236
Profession
Physician Assistant (PA)
Specialty
Physician Assistant (363A00000X)
Practice address
903 W Martin St # Ms 49-2
San Antonio, TX 78207
Phone
2013585437
In the registry since
May 31, 2022
Last NPPES update
April 2, 2026
Sole proprietor
No
License
PA15665 (TX)

At this location

8 other providers in our data list 903 W Martin St # Ms 49-2, San Antonio as a practice address:

In context

The NPI number of Katharine Wiswall is 1376282236. They are a Physician Assistant in San Antonio, Texas.

Katharine Wiswall 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 4 years, since May 31, 2022.

Frequently asked questions

What is NPI 1376282236?

NPI 1376282236 is the 10-digit National Provider Identifier assigned to Katharine Wiswall, a Physician Assistant practicing in San Antonio, Texas. The record has been in the NPPES registry since May 31, 2022.

How do I verify this provider?

Cross-check NPI 1376282236 in the official CMS registry at npiregistry.cms.hhs.gov, and confirm license PA15665 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 April 2, 2026. 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.