TEL: 503-963-2707
FAX: 503-963-2802

“I have to work with the patient to understand their full medical and social history, and dive down into how a concern is affecting their life to know what the right approach is going to be.”

Dr. Branden Tarlow practices full-spectrum gastroenterology and hepatology. He has a background as a basic science and clinical researcher. As a medical student Dr. Tarlow was fascinated with studying digestive diseases and became interested in liver biology. In clinical practice, he was drawn to the diversity of the patients and diagnostic challenges, but it was the ability to use endoscopy to diagnose and fix problems that he found most exciting. He enjoys guiding patients through a rough patch in their health, empowering them to understand their illness, and seeing them get better. 

Dr. Tarlow believes that the Portland area is one of the great places to live. He was born and raised in Portland and was excited to return after several years away. He loves the seasons, proximity to amazing outdoors, and culture. Outside of work, Dr. Tarlow enjoys trying to stay in shape, learning to garden, and keeping up with his active children. 

Volunteer Activities

Volunteer coach, Palo Alto Little League

Other Activities

Member, American Association for the Study of Liver Diseases

Member, American College of Gastroenterology

Member, American Society for Gastrointestinal Endoscopy

Member, Northern California Society for Clinical Gastroenterology

Member, Oregon Gut Club


MD, Oregon Health & Science University, Portland, OR 2016

PhD, Cell, Developmental, and Cancer Biology, Oregon Health & Science University, Portland, OR 2014

BS, Biological Sciences, Stanford University, Palo Alto, CA


Gastroenterology – Board Eligible

Internal Medicine – Board Eligible


Portland Monthly Magazine, “Top Doctors”, 2024

Student Service Award, OHSU All-Hill Student Council

Young Investigator Travel Award, The Liver Meeting, AASLD

John A. Resko Award for the Outstanding PhD Dissertation, Oregon Health & Science University

Stanford Innovative Medicines Accelerator, Human Experimental Biology Award

Pediatric IBD and Celiac Disease Research Award, Stanford Maternal & Child Health Institute

High Value Innovation Challenge Housestaff award, Stanford Healthcare


Tarlow BD, Finegold MJ, Grompe M. Clonal tracing of Sox9+ liver progenitors in oval cell injury. Hepatology. 22 Feb 2014. Doi: 10.1002/hep.27084. PMID: 24700457.

Tarlow BD, Pelz C, Naugler WE, Wakefield LA, Wilson EM, Finegold MJ, Grompe M. Bipotential liver progenitors are derived from chronically injured mature hepatocytes. Cell Stem Cell. 9 Oct 2014. PMID 25312494.

Naugler WE, Tarlow BD, Fedorov LM, Taylor M, Pelz C, Li B, Darnell J, Grompe M. Fibroblast growth factor signaling controls liver sized in mice with humanized livers. Gastroenterology. 30 Sept 2015.

Dorrell C, Schug J, Canaday PS, Russ HA, Tarlow BD, Grompe MT, Streeter PR, Hebrok M, Kaestner KH, Grompe M. Human Islets contain four distinct subtypes of beta cells. Nature Communications. 11 July 2016. Pubmed ID: 27399229

Matsumoto T, Wakefield L, Tarlow B, and Grompe M. In vivo lineage tracing of polyploid hepatocytes during regeneration and injury. 31 October 2019. Cell Stem Cell. 2 Jan 2020. PMID: 31866222.

Cholankeril G, Podboy A, Aivaliotis V, Tarlow BD, Pham E, Spencer S, Kim D, Hsing A, Ahmed A. High Prevalence of Concurrent Gastrointestinal Manifestations in Patients With Severe Acute Respiratory Syndrome Coronavirus 2: Early Experience From California. Gastroenterology. 10 Apr 2020. PMID 32283101.

Wong B, Lu A, Tarlow BD, Tompkins LS, Chawla A, Pearl RG, Wald SH. N95 Respirator Alternatives and Conservation Strategies. Anesth Analg. 2020 Oct;131(4):e202-e204. PMID: 32701549.

Tarlow BD, Gubatan J, Khan MA, Cholankeril G. Are Proton Pump Inhibitors Contributing to SARS-COV-2 Infection? Am J Gastro Nov 2020; 115(11):1920-1921. PMID: 33156116.

Tarlow BD, Kim WR, Mannalithara A, Kwo PY, Bonham CA, Kwong A. Mortality in End Stage Liver Patients Above MELD 3.0 of 40. Hepatology. In press.