Billie Joe Marek, MD
Medical Oncology Physician · McAllen, TX
Billie Joe Marek, MD is a medical oncology physician with a practice address in McAllen, Texas, and NPI 1346282209, issued on Jun 12, 2006. Check the license (Texas H3700, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- Billie Joe Marek
- Credential
- MD
- Primary taxonomy
- Medical Oncology Physician 207RX0202X
- License number
- H3700 TX
Self-reported in NPPES; status is on the state search - Practice location
- 1901 S 2ND St, McAllen, TX 78503
- Phone
- (956) 687-5150
- Enumerated
- Jun 12, 2006
- Record last updated
- Aug 31, 2017 (not updated in 9 years: call before relying on the address or phone)
- Fax
- (956) 687-9546
- Medicaid IDs
- 132633202 TX
132633205 TX
132633201 TX
132633207 TX - Medicare enrollment
- Enrolled (PECOS I20060508000652); accepts Medicare assignment
- Medical or professional school
- University Of Texas Medical School At San Antonio, 1983
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest medical oncology physician records → All 547 in Texas → Look up another NPI →
Also registered at 1901 S 2ND St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Marcelo Boek, M.D.Hematology & Oncology Physician1134166788
- Debra Gillett, RN, FNP CNurse Practitioner1811931322
- Guillermo Lazo-Diaz, MDMedical Oncology Physician1760421101
- Suresh Ratnam, MDMedical Oncology Physician1649217639
- Alvaro Restrepo, MDMedical Oncology Physician1992748586
- Rogelio Salinas, MDRadiation Oncology Physician1942243837
Verify Billie Joe Marek in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license H3700Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
16% more Medicare Part D claims than the average medical oncology physician in 2024
817 Medicare Part D claims for 148 beneficiaries, against an average of 703 among the 4,230 providers of this specialty who prescribed in Part D. Brand-name drugs were 19% of claims. 73 claims were for opioids.
Most prescribed
- Letrozole118 claims
- Anastrozole81 claims
- Revlimid50 claims
- Potassium Chloride40 claims
- Hydrocodone-Acetaminophen39 claims
- Dexamethasone36 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): 89.4 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: $107.07
5 payments; by number, the most common kind was food and beverage; the largest payer was Eisai Inc. 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
- Regional Employee Assistance Program IncVictoria, TX
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Billie Joe Marek among 547 medical oncology physician records in Texas
Billie Joe Marek, MD is one of 547 medical oncology physician records with a practice address in Texas. 85% 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 6% of them.
- NPI issued2006 · 6% of these records are older, 45% newer
- In a Medicare fileYes · 85% of these records are
- In the CMS Doctors and Clinicians fileYes · 76% of these records are
- Graduated1983 · median 2000 among the 414 with a school on file
- Record last updated2017 · 62% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RX0202X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Medical Oncology Physician providers in Texas
There are 547 medical oncology physician records in Texas.
All 547 in Texas → Every provider in McAllen → Medical Oncology Physician nationwide →
The 8 medical oncology physician records with the nearest ZIP codes
- Guillermo Lazo-Diaz, MDMcAllen, TX 785031760421101
- Joseph Litam, MDMcAllen, TX 785031528067469
- Diane Duyen Nguyen, DOMcAllen, TX 785031023233756
- Suresh Ratnam, MDMcAllen, TX 785031649217639
- Alvaro Restrepo, MDMcAllen, TX 785031992748586
- Nirupama Shekar, M.D.McAllen, TX 785031689624405
- Balesh Sharma, MDBrownsville, TX 785211578505483
- Terence Herman, MDHarlingen, TX 785501124097498
Common questions
What is Billie Joe Marek, MD's NPI number?
Billie Joe Marek, MD's National Provider Identifier (NPI) is 1346282209, issued on Jun 12, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Billie Joe Marek, MD located?
The NPPES record lists a practice address at 1901 S 2ND St, McAllen, TX, 78503. Phone: (956) 687-5150. Providers update this record themselves, so call before visiting.
How can I verify Billie Joe Marek, MD's license?
NPPES lists Texas license number H3700, 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 Billie Joe Marek, MD prescribe under Medicare Part D?
In 2024, Billie Joe Marek, MD had 817 Medicare Part D claims for 148 beneficiaries; the average among medical oncology physician prescribers was 703. Part D covers Medicare prescriptions only.
What is Billie Joe Marek, MD's MIPS final score?
The 2023 MIPS final score is 89.4 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.