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. Ramani Nathan:
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Specialties & Research
Dr. Ramani Nathan, MD is board certified in Internal Medicine and Nephrology.
- He has special expertise in 1 area:
Education & Awards
Dr. Nathan graduated from All-India Institute Of Medical Sciences, New Delhi.
Dr. Nathan has 12 hospital affiliations:
- St. Joseph Hospital - Orange
- Anaheim Memorial Medical Center
Accepted Insurance Plans
Dr. Nathan accepts these health insurances in at least one office:
- United Healthcare - 2 plans
- Great-West Healthcare - 2 plans
- Humana - 2 plans
- Cigna - 2 plans
- USA H & W Network - 1 plan
- Aetna - 3 plans
- Molina Healthcare - 4 plans
- Unicare - 12 plans
- CaIOPTIMA - 18 plans
- Anthem Blue Cross - 17 plans