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. William Ratnoff:
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Specialties & Research
Dr. William Ratnoff, MD is board certified in Internal Medicine and Rheumatology.
- He has special expertise in 4 areas:
- Hip Osteoarthritis
- Knee Osteoarthritis
- Osteoarthritis (Hand and Wrist)
- Rheumatic Diseases
Education & Awards
Dr. Ratnoff graduated from Johns Hopkins University, Baltimore.
Dr. Ratnoff has 3 hospital affiliations:
- Latter-Day Saints Hospital
- Mhhs Hermann Hospital
- University Medical Center
Accepted Insurance Plans
Dr. Ratnoff accepts these health insurances in at least one office:
- Aetna - 3 plans