Joseph R. Holahan, M.D.
Hematology (Internal Medicine) Physician · San Antonio, TX
Joseph R. Holahan, M.D. is a hematology (internal medicine) physician with a practice address in San Antonio, Texas, and NPI 1114942414, issued on Jul 13, 2006. Check the license (Texas E9236, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- Joseph R. Holahan
- Credential
- M.D.
- Primary taxonomy
- Hematology (Internal Medicine) Physician 207RH0000X
- License number
- E9236 TX
Self-reported in NPPES; status is on the state search - Practice location
- 4383 Medical Dr, San Antonio, TX 78229
- Phone
- (210) 593-5700
- Enumerated
- Jul 13, 2006
- Record last updated
- Feb 14, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (210) 593-5998
- Medicaid ID
- 128565206 TX
- Entity
- Type 1 · individual
8 nearest hematology (internal medicine) physician records → All 73 in Texas → Look up another NPI →
Also registered at 4383 Medical Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Divya Asti, M.B.B.SHematology & Oncology Physician1821475138
- Muralidhar Beeram, M.D.Medical Oncology Physician1265426282
- Megan Brito, FNP-BCNurse Practitioner1700508504
- Neil ChevliRadiation Oncology Physician1376048975
- Sara Conde, MDMedical Oncology Physician1093809428
- Jeanne Contreras, FNPFamily Nurse Practitioner1467752212
Verify Joseph R. Holahan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license E9236Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
98% fewer Medicare Part D claims than the average hematology (internal medicine) physician in 2024
11 Medicare Part D claims, against an average of 496 among the 1,036 providers of this specialty who prescribed in Part D.
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.
Industry payments in 2024: $49.35
3 payments; by number, the most common kind was food and beverage; the largest payer was Astellas Pharma US Inc. The 721 providers of this specialty with any payment received $13,778.35 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Joseph R. Holahan among 73 hematology (internal medicine) physician records in Texas
Joseph R. Holahan, M.D. is one of 73 hematology (internal medicine) physician records with a practice address in Texas. 88% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 7% of them.
- NPI issued2006 · 7% of these records are older, 60% newer
- In a Medicare fileYes · 88% of these records are
- In the CMS Doctors and Clinicians fileNo · 77% of these records are
- Record last updated2020 · 40% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RH0000X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hematology (Internal Medicine) Physician providers in Texas
There are 73 hematology (internal medicine) physician records in Texas.
All 73 in Texas → Every provider in San Antonio → Hematology (Internal Medicine) Physician nationwide →
The 8 hematology (internal medicine) physician records with the nearest ZIP codes
- Leyla Bojanini Molina, M.D.San Antonio, TX 782291407344658
- Georgios Fotopoulos, MDSan Antonio, TX 782291205368644
- Robert Hromas, MDSan Antonio, TX 782291356356810
- Preetesh Jain, MDSan Antonio, TX 782291578981221
- Carl Meier, MDSan Antonio, TX 782291174518450
- Robyn Scherber, MD, MPHSan Antonio, TX 782291376808428
- Montaser Shaheen, M.D.San Antonio, TX 782291801860168
- Joel Bessman, MDSan Antonio, TX 782231518026327
Common questions
What is Joseph R. Holahan, M.D.'s NPI number?
Joseph R. Holahan, M.D.'s National Provider Identifier (NPI) is 1114942414, issued on Jul 13, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Joseph R. Holahan, M.D. located?
The NPPES record lists a practice address at 4383 Medical Dr, San Antonio, TX, 78229. Phone: (210) 593-5700. Providers update this record themselves, so call before visiting.
How can I verify Joseph R. Holahan, M.D.'s license?
NPPES lists Texas license number E9236, 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 Joseph R. Holahan, M.D. prescribe under Medicare Part D?
In 2024, Joseph R. Holahan, M.D. had 11 Medicare Part D claims; the average among hematology (internal medicine) physician prescribers was 496. 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.