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.
- He has special expertise in 1 area:
Education & Awards
Dr. Marek graduated from The University of Texas at San Antonio.
Dr. Marek has 3 hospital affiliations:
- Valley Regional Medical Center
- Rio Grande Regional Hospital
- Mcallen Med. Ctr.
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- Additional Information
- Dr. Billie Joe Marek FACP and MD is a male Internist, has 28 years of experience and practices in Internal Medicine and Medical Oncology.
- Where does Dr. Billie J. Marek practice?
- Dr. Billie Marek has 2 office locations.
Dr. Billie Marek practices Internal Medicine and Medical Oncology near McAllen, TX.
Additional practice locations include: Brownsville, TX.
See McAllen Internists and McAllen Oncologists.