Summary

Dr. Barrett Wallis is a gastroenterologist with nearly five decades of medical experience, bringing extensive expertise to digestive health care. He earned his medical degree from Weill Cornell Medical College and has dedicated 47 years to helping patients with complex gastrointestinal conditions. Dr. Wallis speaks English and has built a comprehensive practice focused on digestive system disorders.

Dr. Wallis maintains affiliations with Tampa General Hospital Crystal River, HCA Florida Citrus Hospital, and HCA Florida Oak Hill Hospital, practicing primarily in Crystal River, Florida. He specializes in treating abdominal pain and flank pain, including abdominal pain during pregnancy. His procedural expertise includes colonoscopy, upper GI endoscopy, and lower GI endoscopy to diagnose and treat digestive concerns. Patients have given Dr. Wallis an average rating of 3.4 out of 5 stars on Vitals.

AI-generated from data on this provider profile.

Quick Facts

  • accepting new patients
  • 3.4
  • 47 years of experience
  • speaks English
  • Weill Cornell Medical College
  • 16 written reviews
  • 1 specialty
  • 14 areas of expertise
  • 1 board certification
  • 3 hospital affiliations
  • 8 office locations
  • Male

Office Locations

Dr. Barrett Jeffrey Wallis, MD, PA has 8 locations

Advanced Gastroenterology Associates / Main Office

6152 W Corporate Oaks DrCrystal River, FL 34429
Mon9:00 am - 5:00 pm
Tue9:00 am - 5:00 pm
Wed9:00 am - 5:00 pm
Thu9:00 am - 5:00 pm
Fri9:00 am - 5:00 pm
SatClosed
SunClosed

Advanced Gastroenterology Associates

6152 W Corporate Oaks DrCrystal River, FL 34429
Mon8:00 am - 4:30 pm
Tue8:00 am - 4:30 pm
Wed8:00 am - 4:30 pm
Thu8:00 am - 4:30 pm
Fri8:00 am - 4:30 pm
SatClosed
SunClosed

Hca Florida Oak Hill Hospital

11375 Cortez BlvdBrooksville, FL 34613

Good Samaritan Hospital

375 Dixmyth AveCincinnati, OH 45220

Citrus Memorial Hospital

502 W Highland BlvdInverness, FL 34452

Bravera Health Seven Rivers

6201 N Suncoast BlvdCrystal River, FL 34428

Advanced Gastroenterology Associates / Endoscopy Center

6130 W Corporate Oaks DrCrystal River, FL 34429

Bethesda North Hospital

10500 Montgomery RdCincinnati, OH 45242

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Dr. Barrett Jeffrey Wallis, MD, PAAllison Duncan, APRNLynn Collette-Zachar, APRNBrooke Holden, APRN
GastroenterologyGastroenterologyGastroenterologyGastroenterology
Accepts New Patients Accepts New Patients Accepts New Patients Accepts New Patients
3.4 
47 Years of Experience
No Virtual Visit Option Virtual Visit Available Virtual Visit Available Virtual Visit Available
Speaks English Speaks English Speaks English Speaks English
Crystal River , FLTempe , AZTallahassee , FLLittle Rock , AR
Med School: Weill Cornell Medical College Med School: Indiana State University Med School: Regis College Med School: University of Central Arkansas
Current Profile
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Insurance Plans Accepted by Dr. Barrett Jeffrey Wallis, MD, PA

  • Accepts Medicare
  • Accepts Medicaid

Medical Specialties

Dr. Barrett Jeffrey Wallis, MD, PA has the following specialty

Specialty Expertise

Dr. Barrett Jeffrey Wallis, MD, PA has the following 14 areas of expertise

  • Abdominal Pain
  • Acid Reflux Disease (Gastroesophageal Reflux / GERD)
  • Acid Reflux Disease (GERD)
  • Celiac Disease
  • Colonoscopy
  • Constipation
  • Digestive System Endoscopy (EGD)
  • Electrocardiography (EKG)
  • Endoscopic Retrograde Cholangiopancreatography (ERCP)
  • Hemorrhoids
  • Hepatitis C
  • Iron-Deficiency Anemia
  • Irritable Bowel Syndrome (IBS)
  • Ulcerative Colitis

Certifications, License, & Education

47 Years Experience

MEDICAL LICENSE

Medical Doctor, Florida, 2027, Active

EDUCATION & TRAINING

Medical School

Weill Cornell Medical CollegeGraduated in 1979

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Frequently Asked Questions

How can I make an appointment with Dr. Barrett Wallis, MD, PA?
You can find contact information for Dr. Barrett Wallis, MD, PA here on Vitals.
Which hospitals is Dr. Barrett Wallis, MD, PA affiliated with?
Dr. Barrett Wallis, MD, PA is affiliated with Tampa General Hospital Crystal River, Hca Florida Citrus Hospital, and Hca Florida Oak Hill Hospital.
What languages does Dr. Barrett Wallis, MD, PA speak?
Dr. Barrett Wallis, MD, PA speaks English.
Does Dr. Barrett Wallis, MD, PA accept my insurance?
You can see the insurance plans that Dr. Barrett Wallis, MD, PA accepts on their Vitals profile.
Does Dr. Barrett Wallis, MD, PA accept virtual/telehealth appointments?
Dr. Barrett Wallis, MD, PA has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.

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