A medical license is required for a doctor to practice medicine in a particular state. Requirements vary by state but most require, at a minimum, post-graduate training in the doctor’s specific specialty. An NPI number is a national identifier unique to an individual health care provider and is managed by the Center for Medicare & Medicaid Services (CMS).
Learn more about Dr. Billie Marek:
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Specialties & Research
Dr. Billie Marek, FACP, MD is board certified in Internal Medicine and Medical Oncology.
Education & Awards
Dr. Marek graduated from The University of Texas at San Antonio.
Dr. Marek has 3 hospital affiliations:
- Rio Grande Regional Hospital
- Valley Regional Medical Center
- Mcallen Med. Ctr.
Accepted Insurance Plans
Dr. Marek accepts these health insurances in at least one office:
- United Healthcare - 20 plans
- Unicare - 11 plans
- Blue Cross Blue Shield of Texas - 2 plans
- Scott and White Health Plan - 2 plans
- AMERIGROUP - 4 plans
- Humana - 1 plan
- Medicare - 1 plan
- Cigna - 3 plans
- USA H & W Network - 1 plan