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).
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Specialties & Research
Dr. John Graybill, MD is board certified in Internal Medicine.
- He has special expertise in 13 areas:
- AIDS-Related Opportunistic Infections
- AIDS/HIV (Acquired Immunodeficiency Syndrome)
- Cryptococcal Meningitis
- Delayed Hypersensitivity
- Fungal Meningitis
- Mycobacterium Infections
- Thrush (Oral Candidasis)
- Valley Fever (Coccidioidomycosis)
- Yeast Infection (Candidiasis)
Education & Awards
Dr. Graybill graduated from Cornell University, New York. He has 7 awards.
Dr. Graybill has 2 hospital affiliations:
- University Hospital - San Antonio
- Va Hospital
Accepted Insurance Plans
Dr. Graybill accepts these health insurances in at least one office:
- Superior Health Plan - 2 plans
- AMERIGROUP - 4 plans
- Humana - 3 plans
- Community First Health Plans - 4 plans