Ronald L. Drengler, M.D.
Medical Oncology Physician · San Antonio, TX
Ronald L. Drengler, M.D. is a medical oncology physician with a practice address in San Antonio, Texas, and NPI 1265459168, issued on Jul 16, 2006. Check the license (Texas J4091, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- Ronald L. Drengler
- Credential
- M.D.
- Primary taxonomy
- Medical Oncology Physician 207RX0202X
- License number
- J4091 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 16, 2006
- Record last updated
- Jul 11, 2013 (not updated in 13 years: call before relying on the address or phone)
- Fax
- (210) 593-5992
- Medicaid ID
- 118667801 TX
- Medicare enrollment
- Enrolled (PECOS I20091217000497); accepts Medicare assignment
- Entity
- Type 1 · individual
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 Ronald L. Drengler in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license J4091Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.2 times the Medicare Part D claims of the average medical oncology physician in 2024
1,574 Medicare Part D claims for 206 beneficiaries, against an average of 703 among the 4,230 providers of this specialty who prescribed in Part D. 157 claims were for opioids.
Most prescribed
- Hydrocodone-Acetaminophen86 claims
- Prednisone80 claims
- Levothyroxine Sodium74 claims
- Prochlorperazine Maleate72 claims
- Sancuso65 claims
- Ondansetron Odt55 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.
The MIPS final score for 2023 (Medicare payment program): 52.6 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $2,829.40
95 payments; by number, the most common kind was food and beverage; the largest payer was E.R. Squibb & Sons, L.L.C. The 3,343 providers of this specialty with any payment received $11,773.47 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.
Bills Medicare through one group practice
- South Texas Oncology And Hematology, PLLCSan Antonio, TX
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Medical Oncology Physician providers in Texas
There are 547 medical oncology physician records in Texas.
Other medical oncology physician records in Texas
- Chinemerem Abanonu, MDKaty, TX1396972659
- James Abbruzzese, M.D.Houston, TX1134233224
- Maen Abdelrahim, MDHouston, TX1518227735
- Sausan Abouharb, M.DHouston, TX1205097599
- Fadi Abu-Shahin, MDHouston, TX1215123971
- Laith Abushahin, MBBSDallas, TX1326288564
- John Adams, DOArlington, TX1548262900
- Kerin Adelson, M.D.Houston, TX1285846790
- Sachin Agarwal, M.D.College Station, TX1386867448
- Cristi Aitelli, D.O.Fort Worth, TX1578773511
Common questions
What is Ronald L. Drengler, M.D.'s NPI number?
Ronald L. Drengler, M.D.'s National Provider Identifier (NPI) is 1265459168, issued on Jul 16, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Ronald L. Drengler, 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 Ronald L. Drengler, M.D.'s license?
NPPES lists Texas license number J4091, 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 Ronald L. Drengler, M.D. prescribe under Medicare Part D?
In 2024, Ronald L. Drengler, M.D. had 1,574 Medicare Part D claims for 206 beneficiaries; the average among medical oncology physician prescribers was 703. Part D covers Medicare prescriptions only.
What is Ronald L. Drengler, M.D.'s MIPS final score?
The 2023 MIPS final score is 52.6 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.