Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Dr. William Albert Ketterer, DO

Individual provider Internal Medicine Physician · NPI 1518615111

Dr. William Albert Ketterer, DO is an Internal Medicine Physician in San Antonio, Texas. Works from 3 locations. Licensed in Texas and Virginia.

Licensed in
TX, VA
In the registry since
2022
Specialties on file
5
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

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Practice location Address checks out

4502 Medical Dr
San Antonio, TX 78229-4402
Phone: (210) 358-4000
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (2)

  • 3551 Roger Brooke Dr, Fort Sam Houston, TX 78234-4504 — (210) 916-7500
  • 1100 Wilford Hall Loop Bldg 4554, Jbsa Lackland, TX 78236-5638 — (210) 292-6255

Specialties & licences

Hospitalist Physician (primary) Taxonomy 208M00000X · Licence W4736 (TX)
Internal Medicine Physician Taxonomy 207R00000X · Licence W4736 (TX)
Student in an Organized Health Care Education/Training Program Taxonomy 390200000X
General Practice Physician Taxonomy 208D00000X · Licence 0102208859 (VA)
Internal Medicine Physician Taxonomy 207R00000X · Licence 0102208859 (VA)

Record details

NPI number1518615111
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedMarch 13, 2022
Last updated in NPPESJuly 20, 2026
Certification dateJuly 20, 2026

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Food and Beverage $78 5 payments · a meal or drink at a meeting or visit, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

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