Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Dr. Frederick W Ruymann, MD

Individual provider Gastroenterology Physician · NPI 1568466316

Dr. Frederick W Ruymann, MD is a Gastroenterology in Cambridge, Massachusetts. Graduated from Clvlnd Clinic Lerner College of Med of Case Wstn Rsv University in 1987, 39 years ago. Practices with Medical Affiliates of Cape Cod Inc, a 235-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Massachusetts.

Years since qualifying
39
Trained at
Clvlnd Clinic Lerner College of Med of Case Wstn Rsv University
Licensed in
MA
In the registry since
2005
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

300 Mount Auburn St Ste 405
Cambridge, MA 02138-5665
Phone: (617) 661-0221
Fax: (617) 661-3862
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Gastroenterology Physician (primary) Taxonomy 207RG0100X · Licence 71422 (MA)

Record details

NPI number1568466316
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedJune 9, 2005
Last updated in NPPESJanuary 11, 2012
Mailing address300 Mount Auburn St, Ste 405, Cambridge, MA 02138-5502

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyGASTROENTEROLOGY
Medical schoolCLVLND CLINIC LERNER COLLEGE OF MED OF CASE WSTN RSV UNIVERSITY
Graduated 1987 (39 years in practice)
Group practice Medical Affiliates Of Cape Cod Inc — 235 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

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