James Alexander Leidner
Internal Medicine Physician · San Antonio, TX
James Alexander Leidner is an internal medicine physician with a practice address in San Antonio, Texas, and NPI 1851898357, issued on Apr 11, 2018. Check the license (Texas T2659, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- James Alexander Leidner
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- T2659 TX
Self-reported in NPPES; status is on the state search - Practice location
- 6700 W IH 10, San Antonio, TX 78201
- Phone
- (361) 218-6500
- Enumerated
- Apr 11, 2018
- Record last updated
- Nov 1, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20210920000097); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 9,175 in Texas → Look up another NPI →
Also registered at 6700 W IH 10
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jessica Brumble, D.O.Internal Medicine Physician1639530314
- Kelli Hartmann, MSN, RN, AGACNP-BCAcute Care Nurse Practitioner1801308556
- Jesus Herrera, RRTRegistered Respiratory Therapist1164989398
- Hugo Loza, RNRegistered Nurse1053116889
- John Nwankwo, MDAnesthesiology Physician1104116169
- Helen RobinsonFamily Nurse Practitioner1609401181
Verify James Alexander Leidner in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license T2659Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
94% fewer Medicare Part D claims than the average internal medicine physician in 2024
183 Medicare Part D claims for 73 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Cefdinir12 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.
Bills Medicare through one group practice
- Hospital Medicine Services OF TX, PLLCSan Antonio, TX
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
James Alexander Leidner among 9,175 internal medicine physician records in Texas
James Alexander Leidner is one of 9,175 internal medicine physician records with a practice address in Texas. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2018, is newer than 79% of them.
- NPI issued2018 · 79% of these records are older, 18% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated2018 · median 2004 among the 6,088 with a school on file
- Record last updated2021 · 49% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
657 internal medicine physician records list a practice address in San Antonio
They are 657 of the 37,749 NPPES records with a practice address in San Antonio, and 9,175 internal medicine physician records in Texas.
All 9,175 in Texas → Every provider in San Antonio → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Manelys Acosta Serrano, M.D.San Antonio, TX 782011841538352
- Wesam Aziz, M.D.San Antonio, TX 782011093942435
- Himabindu Bandaru, MDSan Antonio, TX 782011871675942
- Jessica Brumble, D.O.San Antonio, TX 782011639530314
- Leticia Poret, MD PASan Antonio, TX 782011578763462
- Mugabe Walker, MDSan Antonio, TX 782011922304195
- Leo Edwards, M.D.San Antonio, TX 782021750313441
- Charles Briseno, M.D.San Antonio, TX 782051184694457
Common questions
What is James Alexander Leidner's NPI number?
James Alexander Leidner's National Provider Identifier (NPI) is 1851898357, issued on Apr 11, 2018. An NPI identifies a provider in billing; it is not a license.
Where is James Alexander Leidner located?
The NPPES record lists a practice address at 6700 W IH 10, San Antonio, TX, 78201. Phone: (361) 218-6500. Providers update this record themselves, so call before visiting.
How can I verify James Alexander Leidner's license?
NPPES lists Texas license number T2659, as entered by the provider. Search the Texas Medical Board at https://profile.tmb.state.tx.us/Search.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does James Alexander Leidner prescribe under Medicare Part D?
In 2024, James Alexander Leidner had 183 Medicare Part D claims for 73 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.