Dr. Frederick W. Ruymann, MD | Hyannis, MA | Gastroenterologist

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Dr. Frederick Ruymann is a gastroenterology specialist who also practices internal medicine. He earned his medical degree from Case Western Reserve University School of Medicine and completed his residency at Massachusetts General Hospital. With 39 years of clinical experience, Dr. Ruymann brings extensive knowledge to his practice. He is fluent in Spanish and Portuguese.

Dr. Ruymann is affiliated with Beth Israel Deaconess Hospital Needham and practices at locations in Hyannis, Massachusetts. He specializes in treating conditions such as upper gastrointestinal bleeding, diverticular disease, and colon polyps. His procedural expertise includes performing sedation services and interpreting MR enterograms and abdominal MRI studies. Patients have given him an average rating of 4.0 stars.

Overview based on verified provider data

4

31 Ratings
39 years of experience
speaks Spanish, Portuguese
Massachusetts General Hospital
7 written reviews
2 specialties
11 areas of expertise
2 board certifications
1 hospital affiliation
2 office locations
Male

Gave an accurate diagnosis
Had a good bedside manner
Spent time with me

Based on patient feedback. Read the reviews

Dr. Ruymann's Ratings and Reviews

4

31 Ratings with 7 written Reviews

Average Wait Time 17 Minutes

How was your appointment with
Dr. Ruymann?

Patients’ Perspective

Gave an accurate diagnosis: (11) Did WellNeeds Improvement (2)
Had a good bedside manner: (10) Did WellNeeds Improvement (2)
Spent time with me: (10) Did WellNeeds Improvement (3)
Provided follow-up after the visit: (8) Did WellNeeds Improvement (5)
Flexible scheduling: (12) Did WellNeeds Improvement (1)
Saw me in a timely manner: No Ratings
Staff was courteous: No Ratings

31 ratings & reviews

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Showing 1 to 7 of 7 reviews

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I had to have a procedure performed and was nervous about doing it. Once I met Dr. Ruymann, he took the time to listen and understand my concerns. I felt a lot better and much more confident after talking with Dr. Ruymann and the procedure went without a hitch.

February 22nd, 2019

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Dr. Ruyman found my colon cancer 18 years ago. I have had all my colonoscopies with him and endoscopes. I was told by Harvard in Cambridge he retired if that was a lie please let me know as I would want my next one to be with him. I am her today thanks to his diagnosis!

February 13th, 2019

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All my colonoscopy procedures have been done by Dr Ruymann. All have gone without incident. I never felt rushed and always felt listened to when discussing my concerns with Dr Ruymann.

October 26th, 2017

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Terrible in re notifications and follow-upNo instructions about prep for procedure until the day of procedure. Notification of results incomplete, sometimes takes a month, sometimes no follow-up at all.The doctor is himself a good one, but doesn't take care of business.

November 8th, 2012

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Dr Ruymann is excellent. I put alot of faith into bedside manner and his is phenomenal. I had been going to a doctor who basically sent me to test after test without taking the time to discuss the reasons why. In one discussion and test, Dr Ruymann diagnosed my situation and began treatment. I would highly reccomend him.

March 5th, 2012

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I was referred to Dr Ruymann from my PCP and did not have any bit of a good experience with him.He performed a procedure (colonscopy) to remove three polups. He diagnosed me with Diverticulosis (which I only discovered in a packet after I went home after the procedure). He did not mention anything to me or my wife. I even asked a nurse after the procedure if this was my diagnosis and she said "No".After all of that, it has been 3 months since the procedure and I have had blood in my stool since. I have contacted the office at least 5 times since and they have not followed up with me. Just don't know what else to say, but please do not use this doctor if you care about yourself!

September 7th, 2011

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Dr.Ruymann is a great doctor and I would strongly recomend him if you are in need of a Gastroenterologist. This is the doctor you should see.

December 15th, 2010

Cape Cod Healthcare General And Specialty Surgery

105 Park StHyannis, MA 02601

Tel: (508) 862-5565

Mon8:00 am - 5:00 pm

Tue8:00 am - 5:00 pm

Wed8:00 am - 5:00 pm

Thu8:00 am - 5:00 pm

Fri8:00 am - 5:00 pm

SatClosed

SunClosed

Cape Cod Hospital

27 Park StHyannis, MA 02601

Tel: (508) 771-1800


Dr. Frederick W Ruymann, MD	Theresa Obonyano, APRN	Jan Seiler, APRN	Ashley Anderson, APRN
Gastroenterology	Gastroenterology	Gastroenterology	Gastroenterology
	Accepts New Patients	Accepts New Patients	Accepts New Patients
4 (31 Ratings)	0 (0 Ratings)	0 (0 Ratings)	0 (0 Ratings)
39 Years of Experience
No Virtual Visit Option	Virtual Visit Available	Virtual Visit Available	Virtual Visit Available
Speaks Spanish, Portuguese	Speaks English	Speaks English	Speaks English
Hyannis , MA	SACRAMENTO , CA	Montgomery , AL	SACRAMENTO , CA
Med School: Case Western Reserve University School Of Medicine	Med School: The University of Texas Health Science Center at Houston	Med School: Georgia State University	Med School: East Tennessee State University - Quillen College of Medicine
Current Profile	View Profile	View Profile	View Profile

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Abdominal Pain
Acid Reflux Disease (Gastroesophageal Reflux / GERD)
Acid Reflux Disease (GERD)
Celiac Disease
Colonoscopy
Constipation
Hemorrhoids
Hepatitis C
Internal Medicine
Irritable Bowel Syndrome (IBS)
Ulcerative Colitis

Dr. Frederick W Ruymann holds an active medical license in the state of Massachusetts.

Medical License

Medical Doctor with an active medical license in the state of Massachusetts that expired in 2026.

Education & Training

Residency

Completed their residency at Massachusetts General Hospital.

Medical School

Graduated from Case Western Reserve University School Of Medicine in 1987.

NPI Number

Dr. Ruymann's NPI number is 1568466316.

Dr. Susan E Harrington
Internal Medicine
| Hyannis, MA
(0)
Dr. Joseph T Horgan, MD
Internal Medicine
75 Years Exp | Pocasset, MA
(0)
Dr. Carol Pierson Goldstein, MD
Cardiovascular Disease
48 Years Exp | Edgartown, MA
(0)
Dr. George Christman Jr, MD
Cardiovascular Disease
| Falmouth, MA
(1)
Dr. Eldad M Rosenthal, MD
Internal Medicine
| Harwich, MA
(0)
Dr. Zachary Elijah Stewart, MD
Diagnostic Radiology
10 Years Exp | Boston, MA
(0)
Dr. Alexander P Rabin, MD
Hospital Medicine
43 Years Exp | Wareham, MA
(0)
Dr. David Martin Kelly, MD
Diagnostic Radiology
27 Years Exp | Hyannis, MA
(0)
Dr. Hetal Ashok Dave-Verma, MD
Diagnostic Radiology
22 Years Exp | Cambridge, MA
(0)
Dr. Katrin Sadigh, MD
Infectious Disease
13 Years Exp | Harwich, MA
(0)

Does Dr. Frederick Ruymann accept virtual/telehealth appointments?: Dr. Frederick Ruymann has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.
Where is Dr. Frederick Ruymann's office located?: Dr. Frederick Ruymann's office is located at 105 Park St, Hyannis, MA, 02601.
What languages does Dr. Frederick Ruymann speak?: Dr. Frederick Ruymann speaks Spanish and Portuguese.
How can I make an appointment with Dr. Frederick Ruymann?: You can find contact information for Dr. Frederick Ruymann here on Vitals.
Which hospitals is Dr. Frederick Ruymann affiliated with?: Dr. Frederick Ruymann is affiliated with Cape Cod Hospital.

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