Clay F. Istre, PA-C
Physician Assistant · San Antonio, TX
Clay F. Istre, PA-C is a physician assistant with a practice address in San Antonio, Texas, and NPI 1811214521, issued on Apr 21, 2010. Check the license (Texas PA09534, as entered in NPPES) with the Texas board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Clay F. Istre
- Credential
- PA-C
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- PA09534 TX
Self-reported in NPPES; status is on the state search - Practice location
- 16755 Huebner RD, San Antonio, TX 78248
- Phone
- (210) 493-4357
- Enumerated
- Apr 21, 2010
- Record last updated
- Jun 26, 2015 (not updated in 11 years: call before relying on the address or phone)
- Fax
- (210) 493-4355
- Medicaid IDs
- 343919203 TX
343919201 TX
343919202 TX - Entity
- Type 1 · individual
Also registered at 16755 Huebner RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Alexandra Naschke, PA-CPhysician Assistant1194183418
- Andrea Neve, FNPFamily Nurse Practitioner1306352711
Verify Clay F. Istre in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Texas board licenses this profession
Search for license PA09534Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
53% fewer Medicare Part D claims than the average physician assistant in 2024
391 Medicare Part D claims for 245 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. 86 claims were for opioids.
Most prescribed
- Tramadol Hcl49 claims
- Acetaminophen-Codeine37 claims
- Cephalexin34 claims
- Cyclobenzaprine Hcl32 claims
- Methylprednisolone31 claims
- Ondansetron Odt22 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
873 physician assistant records list a practice address in San Antonio
They are 873 of the 37,749 NPPES records with a practice address in San Antonio, and 10,999 physician assistant records in Texas.
All 873 in San Antonio → All 10,999 in Texas → Every provider in San Antonio →
Other physician assistant records in Texas
- Neha Aamir, PAPearland, TX1932821808
- Shaghayegh Ababaf, PA-CLewisville, TX1912372145
- Linda Abad, PA-CHouston, TX1063928240
- Hansaa AbbasiDallas, TX1013575679
- Alicia Abbey, MPAS, PA-CSan Antonio, TX1710468145
- Dallah Abdallahi, PADallas, TX1093294811
- Haya AbdellatifGalveston, TX1518409903
- Hillary Abdennassar, PA-CDallas, TX1245991793
- Hodan Abdi, PA-CDallas, TX1558750075
- Lama Abdillahi, PAGalveston, TX1396668604
Common questions
What is Clay F. Istre, PA-C's NPI number?
Clay F. Istre, PA-C's National Provider Identifier (NPI) is 1811214521, issued on Apr 21, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Clay F. Istre, PA-C located?
The NPPES record lists a practice address at 16755 Huebner RD, San Antonio, TX, 78248. Phone: (210) 493-4357. Providers update this record themselves, so call before visiting.
How can I verify Clay F. Istre, PA-C's license?
NPPES lists Texas license number PA09534, as entered by the provider. Search the Texas board that licenses this profession; the NPPES record confirms identity only.
How much does Clay F. Istre, PA-C prescribe under Medicare Part D?
In 2024, Clay F. Istre, PA-C had 391 Medicare Part D claims for 245 beneficiaries; the average among physician assistant prescribers was 830. Part D covers Medicare prescriptions 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.
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.