Gerardo Manuel Rosas, MD
Hematology & Oncology Physician · San Antonio, TX
Gerardo Manuel Rosas, MD is a hematology & oncology physician with a practice address in San Antonio, Texas, and NPI 1912495664, issued on Apr 27, 2018. Check the license (Texas T0909, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- Gerardo Manuel Rosas
- Credential
- MD
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License number
- T0909 TX
Self-reported in NPPES; status is on the state search - Practice location
- 4450 Medical Dr FL 1, San Antonio, TX 78229
- Phone
- (210) 575-3817
- Enumerated
- Apr 27, 2018
- Record last updated
- Aug 1, 2026
- Fax
- (210) 575-4113
- Medicare enrollment
- Enrolled (PECOS I20240528001796); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest hematology & oncology physician records → All 922 in Texas → Look up another NPI →
Also registered at 4450 Medical Dr FL 1
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Laura Darilek, APRN-CNPNurse Practitioner1659263028
- Nosha Farhadfar, M.D.Hematology & Oncology Physician1760819304
- Timothy Fenske, MDHematology & Oncology Physician1104877935
- Amin Firoozmand, M.DHematology & Oncology Physician1336533512
- Wendy Henninger, DNP, APRN, CNPNurse Practitioner1710172838
- Melanie Hochman, AGACNPNurse Practitioner1457949067
Verify Gerardo Manuel Rosas in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license T0909Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
96% fewer Medicare Part D claims than the average hematology & oncology physician in 2024
33 Medicare Part D claims for 15 beneficiaries, against an average of 877 among the 10,784 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: $33.38
2 payments; by number, the most common kind was food and beverage; the largest payer was PharmaEssentia USA Corporation. The 8,560 providers of this specialty with any payment received $7,481.41 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
- University OF Texas Health Science Center AT San AntonioSan Antonio, TX
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Gerardo Manuel Rosas among 922 hematology & oncology physician records in Texas
Gerardo Manuel Rosas, MD is one of 922 hematology & oncology physician records with a practice address in Texas. 87% 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 90% of them.
- NPI issued2018 · 90% of these records are older, 7% newer
- In a Medicare fileYes · 87% of these records are
- In the CMS Doctors and Clinicians fileYes · 75% of these records are
- Graduated2018 · median 2004 among the 691 with a school on file
- Record last updated2026 · 51% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RH0003X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hematology & Oncology Physician providers in Texas
There are 922 hematology & oncology physician records in Texas.
All 922 in Texas → Every provider in San Antonio → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- Georg Aue, MDSan Antonio, TX 782291215928080
- David Boldt, M.D.San Antonio, TX 782291447253042
- Jose Cruz, MDSan Antonio, TX 782291720043524
- Sreedevi Daggubati, MDSan Antonio, TX 782291952373656
- Timothy Fenske, MDSan Antonio, TX 782291104877935
- Francis Giles, M.D.San Antonio, TX 782291750480950
- Gregory Guzley, MDSan Antonio, TX 782291427020114
- David Haile, MDSan Antonio, TX 782291700993862
Common questions
What is Gerardo Manuel Rosas, MD's NPI number?
Gerardo Manuel Rosas, MD's National Provider Identifier (NPI) is 1912495664, issued on Apr 27, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Gerardo Manuel Rosas, MD located?
The NPPES record lists a practice address at 4450 Medical Dr FL 1, San Antonio, TX, 78229. Phone: (210) 575-3817. Providers update this record themselves, so call before visiting.
How can I verify Gerardo Manuel Rosas, MD's license?
NPPES lists Texas license number T0909, 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 Gerardo Manuel Rosas, MD prescribe under Medicare Part D?
In 2024, Gerardo Manuel Rosas, MD had 33 Medicare Part D claims for 15 beneficiaries; the average among hematology & oncology physician prescribers was 877. 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.