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. Marsha Onan, MD is board certified in Ophthalmology.
She has special expertise in 2 Areas, including Lazy Eye Strabismus and Pediatric Ophthalmology.
More Specialties & Research
Education & Awards
Dr. Onan graduated from Baylor College of Medicine, Houston.More Education & Awards
Dr. Onan has 18 hospital affiliations:
- Seton Medical Center
- Daughters of Charity Children's Austin
Accepted Insurance Plans
Dr. Onan accepts these health insurances in at least one office:
- Unicare - 2 plans
- Superior Health Plan - 2 plans
- Humana - 4 plans
- Cigna - 8 plans
- USA H & W Network - 1 plan
- Harvard Pilgrim Health Care - 4 plans
- United Healthcare - 15 plans
- Great-West Healthcare - 3 plans
- Blue Cross Blue Shield of Texas - 4 plans
- Scott and White Health Plan - 6 plans
- AMERIGROUP - 3 plans
More Accepted Insurance