Dr. Ronald DeMasi, MD

Gastroenterology  |  
Male  |  
Age 55
Insurances AcceptedSave
Dr. Ronald DeMasi, MD
Dr. Ronald DeMasi, MD is a gastroenterology doctor who practices in Venice, FL. He is 55 years old and has been practicing for 25 years. Dr. DeMasi is affiliated with Venice Regional Bayfront Health.

DeMasi Digestive Health - Venice

1370 E Venice Ave Ste 210

Venice, FL 34285

Contact Information

(941) 584-6272

Dr. Ronald DeMasi, MD

Dr. Ronald DeMasi, MD

Accepted insurance

  • Aetna
  • American Republic
  • Amerigroup (Wellpoint)
  • AvMed
  • Bakery & Confectionary Union Plan
  • Blue Cross Blue Shield
  • Blue Cross Blue Shield of Florida
  • CareSource
  • Cigna
  • Commercial Insurance Company
  • Community Health Choice
  • Connecticare
  • CoreSource
  • Coventry Health Care
  • 27 More

*Please verify this information when scheduling an appointment.

Learn about Dr. DeMasi

Dr. DeMasi's Experience

Dr. DeMasi's experience matches your search based on the following criteria:
  • Based on total number of patients treated over the last 12 months
  • Specializes in Gastroenterology
  • Board certified in Gastroenterology and Internal Medicine
  • No malpractice claims found
  • No sanctions found
  • No board actions found


  • Gastroenterology

Board Certifications

  • Gastroenterology
    Accredited by: American Board of Internal Medicine*
  • Internal Medicine
    Accredited by: American Board of Internal Medicine*

Conditions Treated

  • Abdominal Disorders
  • Abdominal Pain
  • Anal or Rectal Pain
  • Anemia
  • Autoimmune Diseases
  • Barrett's Esophagus
  • Benign Neoplasm of the Digestive System
  • Benign Tumor
  • Biliary Atresia
  • Blood Disorders
  • Cancer
  • Celiac Disease
  • Cholecystitis and Gallstones
  • Cirrhosis
  • Colorectal Cancer
  • Constipation
  • Crohn's Disease
  • Dehydration
  • Diaphragmatic and-or Hiatal Hernia
  • Diarrhea
  • Diverticulitis, Intestinal
  • Diverticulosis, Intestinal
  • Duodenal Ulcer
  • Duodenitis
  • Dysentery
  • Dysphagia
  • Enteritis
  • Esophageal Achalasia and Cardiospasm
  • Esophageal Cancer
  • Esophageal Diseases
  • Esophageal Diverticulum
  • Esophageal Ulcer
  • Esophageal Varices
  • Esophagitis
  • Gallstones
  • Gas-Bloat Syndrome
  • Gastric Ulcer
  • Gastritis
  • Gastroesophageal Reflux Disease (GERD)
  • Gastrointestinal Bleeding
  • Gastrointestinal Diseases
  • Gastrointestinal Malabsorption
  • Gastroparesis
  • Heartburn
  • Hemochromatosis
  • Hemorrhoids
  • Hepatitis A
  • Hepatitis B - Immune Response
  • Hepatitis C
  • Hernia
  • Ileus
  • Indigestion
  • Inflammatory Bowel Disease
  • Intestinal Obstruction
  • Irritable Bowel Syndrome
  • Liver Damage from Alcohol
  • Malnutrition
  • Mesenteric Panniculitis
  • Nausea
  • Neoplasm of Gastrointestinal Tract
  • Non-Alcoholic Fatty Liver Disease
  • Non-Neonatal Jaundice
  • Noninfectious Gastroenteritis and Colitis
  • Pancreatitis
  • Peptic Ulcer
  • Pyloric Stenosis
  • Reflux Esophagitis
  • Small Intestine Cancer
  • Stomach Diseases
  • Stomach and Small Intestine Cancer
  • Ulcer
  • Ulcerative Colitis
  • Unexplained Weight Loss
  • Vascular Insufficiency of Intestines
  • Viral Hepatitis
  • Vomiting Disorders


Read More


  • Anoscopy
  • Bile Duct Procedure
  • Colonoscopy, Proctosigmoidoscopy, and Sigmoidoscopy
  • ERCP (Endoscopic Retrograde Cholangiopancreatography)
  • Endoscopy (Esophagus, Stomach, Small Intestine)
  • Gastroenterology Procedures
  • Liver Biopsy

Background Check

0 Malpractice Claims

No malpractice history found for Florida.

0 Sanctions

No sanctions history found for the years that Healthgrades collects data.

0 Board Actions

No board actions found for the years that Healthgrades collects data.


  • East Carolina University / Brody School of Medicine
    Undergraduate School | Graduated 1984
  • The Brody School Of Medicine At East Carolina University
    Medical School | Graduated 1992
  • University Of South Florida College Of Med
    Internship Hospital | Completed 1993
  • University Of South Florida College Of Med
    Residency Hospital | Completed 1995
  • Waterbury Hospital
    Fellowship Hospital | Completed 1996
  • Yale University
    Fellowship Hospital | Completed 1998
  • Masters of Science in Public Health, University of North Carolina at Chapel Hill
    Other Education | Completed

Awards & Recognition

Awards & Honors
  • Healthgrades Honor Roll
Media & Publications

Dr. DeMasi has no media or publications listed.

Languages Spoken

  • English
  • Spanish

Memberships & Professional Affiliations

Dr. DeMasi does not have any memberships or affiliations listed. If you are Dr. DeMasi and would like to add memberships or affiliations, please update your profile.

Dr. DeMasi's Reviews

Likelihood of recommending Dr. DeMasi to family and friends
based on 33 total reviews (15 with comments)
Dr. DeMasi's Performance
  • Trustworthiness
  • Explains condition(s) well
  • Answers Questions
  • Time well spent
Office & Staff Performance
  • Scheduling
  • Office environment
  • Staff friendliness
  • Average wait time
    10 to 15 minutes
Patient Comments (15)
Sarasota, FL |
I found the Doctor and nurses in the room where I was having my procedure done very unprofessional. Dr. DeMasi was on his cell phone while a nurse was playing with his hair, so much for infection protection. Also, I continue to have problems with his billing staff getting back to me. After 60 days and numerous emails and phone calls no one from his billing staff has returned my calls or emails. All I want them to do is send billing info to my secondary insurance.
in nokomis, fl |
Painless colonoscopy. Very thorough.
Venice, FL |
My mom went to him in June referred by primary care physician. She's over 50 and primary had been on her to get colonoscopy since she'd never had one. It was discussed at first visit that she was there for routine only like mammogram. Demasi charged her almost 2k! She has other problems that her primary already figured out and diagnosed. My father had just passed away -routine is affordable. Insurance, primary, everyone was upset. He refused to recode as routine. We could lose all now.
in Venice, FL |
I have been a patient of Dr. DeMasi for many years... No matter how bad you're feeling he always has a way to make you smile... His staff is top notch! I couldn't ask for a better group of professionals to take care of my medical needs...
in Venice, FL |
A very pleasant & calm Gentleman with a great sense of humor. His "bedside manner" is commendable and most welcomed in his area of Medicine. His Staff members are Professional and Personable. His Suite is calm and tastefully decorated. A clean and comfortable environment is greatly appreciated!
in Venice, FL |
I have been a patient since 2000 when DR. R De Masi and dad visited me at Venice Hospital. After I had been in hospital three days they immediately diagnosed C Diff and prescribed medication. After five more days I was released and began recovery. I have been a very satisfied De Masi Digestive patient since then, receiving testing such as colonoscopy and endoscopy. Ken Perkins
in Englewood, FL |
This was my fifth colonoscopy, all different doctors. This time the overall experience was exceptional, doctor listened to me and was very professional.
in North Port, FL |
Dr Demasi did a great job fixing all my concerns with one visit. And his staff went far and beyond to ease my stress level. Its all good
in Port Charlotte, FL |
I found the office to be adequately staffed, friendly, and attentive. Also, I was seen promptly, and Dr. DeMasi was very professional and answered all of my questions. I had an extremely good experience, and I highly recommend them!
in North Port, FL |
He is the best in our area! After three years of suffering with UC, many hospitalizations, blood transfusions and steroids I really though I'd die. After 2 weeks in his care I've been in total remission for 4 years. Before him my other specialist did nothing to help me. He knows his stuff and if he didn't he would go the extra mile to find someone who did. Not you're typical Dr. He really cares. I'm am very lucky and grateful to have him as my doctor.
in Nokomis, FL |
Dr. DeMasi has an exceptional bedside manner and is extremely caring, and professional.
in Venice, FL |
Dr.DeMasi and his staff experience provided the best healthcare patient can expect !
in Venice, Florida |
Wonderful, compassionate doctor. His bedside manner is so kind and sincere. I highly recommend Dr. Demasi!! Bless his heart..
in Venice, FL |
Had a problem focusing on the problem I had
in North Port Florida |
Good doctor
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Now Accepting New Patients
Dr. DeMasi accepts 41 insurance carriers
  • Aetna
    Aetna HMO
    Choice Plus POS II
  • American Republic
  • Amerigroup (Wellpoint)
  • AvMed
  • Bakery & Confectionary Union Plan
  • Blue Cross Blue Shield
    Blue Card PPO
  • Blue Cross Blue Shield of Florida
    BlueDental Choice
  • CareSource
  • Cigna
    Cigna HMO
    Cigna PPO
    Great West Healthcare-Cigna PPO
    Open Access Plus
  • Commercial Insurance Company
  • Community Health Choice
  • Connecticare
  • CoreSource
  • Coventry Health Care
  • Coventry Health Care of Florida, Inc.
    Employer Group PPO
  • First Health (Coventry Health Care)
    First Health (Coventry Health Care) PPO
  • Golden Rule
  • Government Employees Health Association (GEHA)
  • Health Net
    Medicare Advantage PFFS
  • HealthPlus
  • HealthPlus Amerigroup
  • Horizon Blue Cross Blue Shield of New Jersey
  • Humana
    Choice Care PPO
    Select HMO
    Tampa Bay CoreNet
  • Husky Health
  • inHealth
  • INTotal Health
  • Kaiser Permanente
  • Medicaid
  • Medical Mutual of Ohio
  • Medico
  • Midwest Health Plan
  • Molina Healthcare
  • MultiPlan
    MultiPlan PPO
  • National Elevator
  • Peach State Health Plan
  • POMCO Group
  • Simply Healthcare Plans
  • Staywell (Wellcare)
  • Tricare
  • UnitedHealthCare
    Choice Plus POS
    Navigate HMO
    Navigate POS
    Neighborhood Health Partnership
    Options PPO
  • Wellcare of Georgia

*Please verify this information when scheduling an appointment.

Hospitals where Dr. DeMasi has admitting privileges

Venice Regional Bayfront Health
540 The Rialto
Venice, FL 34285
View Hospital Profile

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