Areas of Expertise
MediFind evaluates expertise by pulling from factors such as number of articles a doctor has published in medical journals, participation in clinical trials, speaking at industry conferences, prescribing and referral patterns, and strength of connections with other experts in their field.
Learn more about MediFind’s expert tiers
Find Dr. O'brien's expertise for a condition
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- Advanced
- Attenuated Familial Adenomatous Polyposis
- Barrett EsophagusDr. O'brien isAdvanced. Learn about Barrett Esophagus.
- Bile Duct ObstructionDr. O'brien isAdvanced. Learn about Bile Duct Obstruction.
- Bile Duct StrictureDr. O'brien isAdvanced. Learn about Bile Duct Stricture.
- CholedocholithiasisDr. O'brien isAdvanced. Learn about Choledocholithiasis.
- CholestasisDr. O'brien isAdvanced. Learn about Cholestasis.
- Chronic Erosive GastritisDr. O'brien isAdvanced. Learn about Chronic Erosive Gastritis.
- ColonoscopyDr. O'brien isAdvanced. Learn about Colonoscopy.
- Cronkhite-Canada DiseaseDr. O'brien isAdvanced. Learn about Cronkhite-Canada Disease.
- EndoscopyDr. O'brien isAdvanced. Learn about Endoscopy.
- EsophagitisDr. O'brien isAdvanced. Learn about Esophagitis.
- Gallbladder DiseaseDr. O'brien isAdvanced. Learn about Gallbladder Disease.
- GallstonesDr. O'brien isAdvanced. Learn about Gallstones.
- GastrectomyDr. O'brien isAdvanced. Learn about Gastrectomy.
- Gastrointestinal BleedingDr. O'brien isAdvanced. Learn about Gastrointestinal Bleeding.
- JaundiceDr. O'brien isAdvanced. Learn about Jaundice.
- Juvenile Polyposis SyndromeDr. O'brien isAdvanced. Learn about Juvenile Polyposis Syndrome.
- Wandering SpleenDr. O'brien isAdvanced. Learn about Wandering Spleen.
View All 18 Advanced Conditions
- Experienced
- AchalasiaDr. O'brien isExperienced. Learn about Achalasia.
- Acute PancreatitisDr. O'brien isExperienced. Learn about Acute Pancreatitis.
- AnemiaDr. O'brien isExperienced. Learn about Anemia.
- Angiodysplasia of the ColonDr. O'brien isExperienced. Learn about Angiodysplasia of the Colon.
- Autoimmune HepatitisDr. O'brien isExperienced. Learn about Autoimmune Hepatitis.
- Bacterial GastroenteritisDr. O'brien isExperienced. Learn about Bacterial Gastroenteritis.
- Banti's SyndromeDr. O'brien isExperienced. Learn about Banti's Syndrome.
- Benign Esophageal StrictureDr. O'brien isExperienced. Learn about Benign Esophageal Stricture.
- Childhood PancreatitisDr. O'brien isExperienced. Learn about Childhood Pancreatitis.
- Childhood VolvulusDr. O'brien isExperienced. Learn about Childhood Volvulus.
- Cholangiocarcinoma (Bile Duct Cancer)Dr. O'brien isExperienced. Learn about Cholangiocarcinoma (Bile Duct Cancer).
- CholangitisDr. O'brien isExperienced. Learn about Cholangitis.
- Chronic PancreatitisDr. O'brien isExperienced. Learn about Chronic Pancreatitis.
- CirrhosisDr. O'brien isExperienced. Learn about Cirrhosis.
- ColitisDr. O'brien isExperienced. Learn about Colitis.
- Colorectal CancerDr. O'brien isExperienced. Learn about Colorectal Cancer.
- ColostomyDr. O'brien isExperienced. Learn about Colostomy.
- Congenital Diaphragmatic HerniaDr. O'brien isExperienced. Learn about Congenital Diaphragmatic Hernia.
- Crohn's DiseaseDr. O'brien isExperienced. Learn about Crohn's Disease.
- DiarrheaDr. O'brien isExperienced. Learn about Diarrhea.
- Diverticular DiseaseDr. O'brien isExperienced. Learn about Diverticular Disease.
- Enlarged LiverDr. O'brien isExperienced. Learn about Enlarged Liver.
- Esophageal VaricesDr. O'brien isExperienced. Learn about Esophageal Varices.
- Familial Adenomatous PolyposisDr. O'brien isExperienced. Learn about Familial Adenomatous Polyposis.
- Familial Colorectal CancerDr. O'brien isExperienced. Learn about Familial Colorectal Cancer.
- Familial Pancreatic CancerDr. O'brien isExperienced. Learn about Familial Pancreatic Cancer.
- Gallbladder RemovalDr. O'brien isExperienced. Learn about Gallbladder Removal.
- Gardner SyndromeDr. O'brien isExperienced. Learn about Gardner Syndrome.
- Gastric DysmotilityDr. O'brien isExperienced. Learn about Gastric Dysmotility.
- GastritisDr. O'brien isExperienced. Learn about Gastritis.
- Gastroesophageal Reflux Disease (GERD)Dr. O'brien isExperienced. Learn about Gastroesophageal Reflux Disease (GERD).
- HeartburnDr. O'brien isExperienced. Learn about Heartburn.
- HemorrhoidsDr. O'brien isExperienced. Learn about Hemorrhoids.
- HepatitisDr. O'brien isExperienced. Learn about Hepatitis.
- Hereditary PancreatitisDr. O'brien isExperienced. Learn about Hereditary Pancreatitis.
- Hiatal HerniaDr. O'brien isExperienced. Learn about Hiatal Hernia.
- Intestinal CancerDr. O'brien isExperienced. Learn about Intestinal Cancer.
- Irritable Bowel Syndrome (IBS)Dr. O'brien isExperienced. Learn about Irritable Bowel Syndrome (IBS).
- LithotripsyDr. O'brien isExperienced. Learn about Lithotripsy.
- Lower Esophageal RingDr. O'brien isExperienced. Learn about Lower Esophageal Ring.
- Painful SwallowingDr. O'brien isExperienced. Learn about Painful Swallowing.
- Pancreatic CancerDr. O'brien isExperienced. Learn about Pancreatic Cancer.
- Primary Biliary CholangitisDr. O'brien isExperienced. Learn about Primary Biliary Cholangitis.
- Reynolds SyndromeDr. O'brien isExperienced. Learn about Reynolds Syndrome.
- Sclerosing CholangitisDr. O'brien isExperienced. Learn about Sclerosing Cholangitis.
- SplenectomyDr. O'brien isExperienced. Learn about Splenectomy.
- Stomach CancerDr. O'brien isExperienced. Learn about Stomach Cancer.
- Swallowing DifficultyDr. O'brien isExperienced. Learn about Swallowing Difficulty.
- TenesmusDr. O'brien isExperienced. Learn about Tenesmus.
- Trichohepatoenteric SyndromeDr. O'brien isExperienced. Learn about Trichohepatoenteric Syndrome.
- Turcot SyndromeDr. O'brien isExperienced. Learn about Turcot Syndrome.
- Ulcerative ColitisDr. O'brien isExperienced. Learn about Ulcerative Colitis.
- Viral GastroenteritisDr. O'brien isExperienced. Learn about Viral Gastroenteritis.
- VisceromegalyDr. O'brien isExperienced. Learn about Visceromegaly.
- Watermelon StomachDr. O'brien isExperienced. Learn about Watermelon Stomach.
View All 55 Experienced Conditions
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