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. Frederick Ruymann:
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- Currently 3 of 4 stars
The overall average patient rating of Dr. Frederick Ruymann is Good.
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Specialties & Research
Dr. Frederick Ruymann, MD is board certified in Gastroenterology.
Education & Awards
Dr. Ruymann graduated from Case Western Reserve University , Cleveland. He has 1 awards.
Dr. Ruymann has 8 hospital affiliations:
- Brigham and Women's Hospital
- Massachusetts General Hospital
Accepted Insurance Plans
Dr. Ruymann accepts these health insurances in at least one office:
- Tufts Health Plans - 7 plans
- United Healthcare - 2 plans
- Blue Cross Blue Shield of Massachusetts - 16 plans
- Great-West Healthcare - 2 plans
- Unicare - 2 plans
- Boston Medical Center Health Net Plan - 2 plans
- Network Health - 2 plans
- Evercare - 4 plans
- Humana - 6 plans
- Cigna - 14 plans
- Aetna - 3 plans
Similar doctors nearby
- Additional Information
- Where does Dr. Frederick W. Ruymann practice?
Dr. Frederick Ruymann practices Gastroenterology near Cambridge, MA.
Additional practice locations include: Watertown, MA.
See Cambridge Gastroenterologists.