Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Dr. Billie Joe Marek, MD

Individual provider Medical Oncology Physician · NPI 1346282209

Dr. Billie Joe Marek, MD is a Medical Oncology in McAllen, Texas. Graduated from University of Texas Medical School at San Antonio in 1983, 43 years ago. Practices with Regional Employee Assistance Program Inc, a 102-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Texas.

Years since qualifying
43
Trained at
University of Texas Medical School at San Antonio
Licensed in
TX
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

1901 S 2nd St
McAllen, TX 78503-1271
Phone: (956) 687-5150
Fax: (956) 687-9546
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Medical Oncology Physician (primary) Taxonomy 207RX0202X · Licence H3700 (TX)

Record details

NPI number1346282209
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 12, 2006
Last updated in NPPESAugust 31, 2017

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyMEDICAL ONCOLOGY
Also practisesINTERNAL MEDICINE
Medical schoolUNIVERSITY OF TEXAS MEDICAL SCHOOL AT SAN ANTONIO
Graduated 1983 (43 years in practice)
Group practice Regional Employee Assistance Program Inc — 102 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

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