Mitchell L. Cohen, MD, AGAF, FACG
Gastroenterology • Hepatology • Gastrointestinal Endoscopy
Director of Gastroenterology and Gastrointestinal Endoscopy Services
Prosser Memorial Digestive Health Center, Prosser, Washington
Clinical Associate Professor, Elson S. Floyd College of Medicine,
Washington State University
Clinical Assistant Professor, University of Washington School of Medicine
Honorary Medical Staff and Former Chief of Gastroenterology,
Swedish Medical Center, Seattle, Washington
EDUCATION
1977–1981 Medical School: University of Southern California (USC), Los Angeles, California, M.D. awarded June 1981
1976–1977 Graduate School: UCLA, Los Angeles, California, Masters Program in Biochemistry
1974–1975 Foreign Exchange Student (University of California), Junior year: University of Stirling, Stirling, Scotland, United Kingdom
1972–1976 Undergraduate: UCLA, Los Angeles, California, B.S. in Biochemistry (Magna Cum Laude, Phi Beta Kappa) awarded June 1976
POSTGRADUATE MEDICAL TRAINING
1987–1991 Gastroenterology Research Fellow, Division of Gastroenterology, Stanford University School of Medicine, Stanford, California
1985–1987 Gastroenterology Clinical Fellow, University of New Mexico School of Medicine, Albuquerque, New Mexico
1981–1984 Internship & Residency in Internal Medicine, Santa Clara Valley Medical Center (Stanford University Affiliated County Hospital),
San Jose, California
PROFESSIONAL EXPERIENCE
2021-present Private Practice Gastroenterology, Prosser Memorial Digestive Health Center, Prosser, Washington (adenoma detection rate = 44%)
2021 Private Practice Gastroenterology, Summit Pacific Medical Center, Elma, Washington
2014–2021 Private Practice Gastroenterology, Confluence Health | Wenatchee Valley Medical Group, Moses Lake, Washington
2015–2021 Medical Staff, Samaritan Hospital, Moses Lake, Washington
2014–2021 Medical Staff, Wenatchee Valley Hospital, Wenatchee, Washington
1993–2014 Private Practice Gastroenterology, Minor & James Medical (now part of Swedish Medical Center), Seattle, Washington
1991–present Medical Staff, Swedish Hospital Medical Center, Seattle, Washington
2000–2013 Medical Staff, Overlake Hospital Medical Center, Bellevue, Washington
1991–1993 Private Practice Gastroenterology, Summit Madison Medical Group, Seattle, Washington (merger with Minor & James Medical
12/1993)
1990–1991 Staff Physician, Division of Gastroenterology, Palo Alto Veteran's Administration Hospital (Stanford University Teaching Hospital),
Palo Alto, California
1988–1991 Attending Physician, Division of Gastroenterology, Stanford University Hospital and Clinics, Stanford, California
1987–1991 General Internal Medicine Clinic Work, East Valley Medical Clinic, San Jose, California
1984–1985 General Internal Medicine Clinic Work, East Valley and Chaboya Medical Clinics, San Jose, California
1984–1985 Voluntary Clinical Faculty, Department of Internal Medicine, Santa Clara Valley Medical Center (Stanford University Affiliated
County Hospital), San Jose, California
HOSPITAL POSITIONS & COMMITTEE WORK
2021-present Director of Gastroenterology and Gastrointestinal Endoscopy Services, Prosser Memorial Digestive Health Center,
Prosser, Washington
2022-present Surgery Committee, Prosser Memorial Hospital, Prosser, Washington
2021 Medical Director of Gastroenterology and Endoscopy Services, Summit Pacific Medical Center, Elma, Washington
2010–2011 Chief of Gastroenterology, Swedish Medical Center, Seattle, Washington
2010–2011 Gastroenterology Advisor, Internal Medicine Quality Review Committee, Swedish Medical Center, Seattle, Washington
2010 Acting Director, Gastroenterology Special Procedures Unit, Swedish Medical Center, Seattle, Washington
2009 Designer of Swedish Medical Center Issaquah Outpatient Endoscopy Facility, Swedish Medical Center Campus, Issaquah, Washington
2006 Award for Most Innovative Medical Practice, Minor and James Medical, Seattle, Washington
1993–1995 Chairman, Information Systems Steering Committee, Swedish Medical Center, Seattle, Washington
1993–1995 Physician Advisory Panel for Information Systems, Swedish Medical Center, Seattle, Washington
1992–1995 Physician/Clinical Computer Users Group, Swedish Medical Center, Seattle, Washington
CLINIC AND OTHER MISCELLANEOUS PROFESSIONAL ACTIVITIES
2022–present Participation in GIQuIC (GI Quality Improvement Consortium, Ltd.)
2014-2021 Leadership team, GI service and Ambulatory Surgery Facility, Confluence Health Moses Lake Clinic,
Moses Lake, Washington
2014–2021 Preparation and updating of gastroenterology screening and surveillance guidelines, GI Department,
Confluence Health, Wenatchee, Washington
2008–2012 Chief of Gastroenterology, Minor and James Medical, Seattle, Washington
2009 Minor & James Medical/Swedish Medical Center Affiliation Committee, Minor & James Medical, Seattle, Washington
2006–2013 Chief Consultant, Technology Development, Minor and James Medical, Seattle, Washington
2006 EMR Implementation Committee, Minor and James Medical, Seattle, Washington
2004–2005 Member, Board of Directors, Minor and James Medical, Seattle, Washington
1995–2000 Director, Ambulatory Surgery Center, Minor & James Medical, Seattle, Washington
HONORS and AWARDS
2022 Recognition for "Excellence in Patient Healthcare" by Community Health of Central Washington
2020 Vitals.com Awards: Patient's Choice Award, Compassionate Doctor Recognition, On-Time Doctor Award
2011 Named by peers and independent research as a Seattle Super Doctor
2000, 2011 Voted by peers as one of Seattle’s Top Physicians, Seattle Magazine
2011-2016 Castle Connolly Top Doctor
2016-2018 America's Most Honored Professionals
1991 Glaxo Research Institute Fellow's Award for Outstanding Research
1990–1991 National Institutes of Health Clinical Investigator Award (#1K08-DK01948), "Molecular Regulation of Intestinal Amino-oligopeptidase."
1988–1990 National Institutes of Health Individual National Research Service Award (#1F32-DK08267), "Intestinal Amino-oligopeptidase:
Regulation of Synthesis."
1972–1976 UCLA: University of California Foreign Exchange Student (1974-1975), University of Stirling, Stirling, Scotland, United Kingdom; Phi
Beta Kappa, Dean's Honor List, Graduated with Special Honors Degree in Chemistry and Biochemistry
BOARD CERTIFICATION
1987 American Board of Internal Medicine - Gastroenterology
1984 American Board of Internal Medicine - Internal Medicine
LICENSURE TO PRACTICE
1991–present State of Washington (#MD00028854)
ACLS CERTIFICATION
Certified through 7/27/2025
PROFESSIONAL ORGANIZATIONS
2015–present American Society for Gastrointestinal Endoscopy
2014–present American College of Gastroenterology (ACG Fellow)
1989–present American Gastroenterological Association (AGA Fellow)
1991–2021 Pacific Northwest Gastroenterology Society
1992–2021 Washington State Medical Association
1992–2014 King County Medical Society
1988–1992 American Association for the Advancement of Science
TEACHING ACTIVITIES
2024–present Clinical Associate Professor of Medicine, Elson S. Floyd College of Medicine, Washington State University, Spokane, Washington
1992–present Clinical Assistant Professor of Medicine 2023-present (Clinical Instructor 1992-2023), Division of Gastroenterology,
University of Washington School of Medicine, Seattle, Washington
2021 Teaching Faculty (Gastroenterology), Providence St. Peters – Summit Pacific Medical Center Family Practice Residency, Elma, Washington
2015–2021 Clinical Instructor, University of Washington School of Medicine Medical Student Internal Medicine and WRITE Program Rotations,
Confluence Health/Wenatchee Valley Medical Group, Moses Lake, Washington
1991–2014 Housestaff Teaching Faculty, Department of Medicine, Swedish Hospital Medical Center, (University of Washington Affiliated
Teaching Hospital), Seattle, Washington
1988–1991 Clinical Instructor of Medicine, Division of Gastroenterology, Stanford University School of Medicine,
Stanford, California
1988 Instructor, Medical School Year II Preparation for Clinical Medicine Course, Stanford University School of Medicine, Stanford, California
1986–1987 Instructor, Medical School Year II Gastroenterology Course, University of New Mexico School of Medicine, Albuquerque, New Mexico
PUBLICATIONS AND PRESENTATIONS
• Nudell, .M., Santiago, N.A., Zhu, J-S., Cohen, M.L., Majuk, Z., and Gray, G.M. Intestinal Lactase: maturational excess expression of mRNA over enzyme protein. Am. J. Physiol. 265:G1108-G1115, 1993.
• Nudell, D.M., Santiago, N.A., Majuk, Z., Cohen, M.L., Zhu, J-S., and Gray, G.M. Intestinal lactase: paradoxical expression of mRNA and protein Clin. Res. 39:169A, 1991 (abstract). Presented at the National Meeting of the American Society for Clinical Investigation, Seattle, Washington, May 3, 1991.
• Cohen, M.L., Santiago, N.A., Zhu, J-S., and Gray, G.M. Differential regulation of intestinal amino-oligopeptidase gene expression in neonatal and adult rats. Am. J. Physiol. 261:G866-G871, 1991.
• Cohen, M.L., Santiago, N.A., Zhu, J-S., and Gray, G.M. Regulation of intestinal amino-oligopeptidase gene expression during postnatal development. Gastroenterology 100:A518, 1991 (abstract). Presented at Digestive Diseases Week, New Orleans, Louisiana, May 21, 1991.
• Cohen, M.L., Santiago, N.A., and Gray, G.M. Developmental expression of rat intestinal amino-oligopeptidase. Clin Res. 39:26A, 1991 (abstract). Presented at the Meeting of the Western Society for Clinical Investigation, Carmel, California, February, 8, 1991.
• Cohen, M.L., Santiago, N.A., and Gray, G.M. Regulation of rat intestinal amino-oligopeptidase gene expression during postnatal development. Presented at the Gastroenteric Biology Conference, Chicago, Illinois, October 31, 1990.
• Cohen, M.L., Manier, J.W. and Bredfeldt, J.E. Sinusoidal Lymphocytosis of the Liver in Felty's Syndrome with a Review of the Liver Involvement in Felty's Syndrome. J. Clin. Gastroenterol. 11:92-94, 1989.
• Cohen, M.L., Ming, R.H., Gogel, H.D., Davis, M. and Pitcher, J.L. Horse Pill ("Bute") Hemorrhage. J. Clin. Gastroenterol. 10:210-212, 1988.
PROCEDURES PERFORMED AT PROSSER MEMORIAL DIGESTIVE HEALTH CENTER
Colonoscopy, Upper endoscopy, Gastrointestinal stricture dilatation, Push enteroscopy, PEG/PEJ placement, Endoscopic mucosal resection
(EMR) of complex & large colon polyps, ERCP (endoscopic retrograde cholangiopancreatography), EUS (endoscopic ultrasound),
Small bowel capsule endoscopy, Liver biopsy
**OTHER PROCEDURES AVAILABLE THROUGH OUR OUTSIDE GI CONSULTANTS**
Treatment of dysplastic Barrett's esophagus, Endoscopic submucosal dissection (ESD), POEM esophagus & G-POEM,
Deep enteroscopy, GI stenting
***Coming this year we are adding liver elastography testing for evaluation of patients with liver disease***
Providing Gastroenterology Care in Washington State for More than 30 Years
PATIENT COMMENTS
"Dr Cohen, I am so grateful to be a patient of yours and will highly recommend you to everyone!"
"Dr. Cohen and staff were very caring. Before and afterwards, doctor came in and talked with me. Very patient and caring. From the time
I walked in the front door, I felt I was in good hands."
Dr. Cohen, You have made me and my family think about the future with joy instead of dread. You are truly a gift from God. Thank you."
"I had my first colonoscopy done here (Dr. Cohen, Prosser Digestive Health Center) and I very highly recommend going here. They truly make you feel
like you are part of their family. The entire staff is very welcoming and caring. I will definitely continue choosing them for any future needs."
“Dr. Cohen was exceptionally cordial and professional during the entire procedure.”
“Dr. Cohen very business-like & professional, explained things to my husband as well.”
“Dr. Cohen’s care and bedside manners were excellent!! Thank you!!"
"Dr. Cohen is a great doctor. He's witty like the old school doctors. I have total confidence in him."
"Dr. Cohen, I am forever grateful for all the kindness and care shown to me by you and your staff."
"Dr. Mitchell Cohen is the best."
"Very good doctor"
Dr. Mitchell Cohen is a gastroenterologist practicing in Prosser, WA. Dr. Cohen specializes in diagnosing and treating digestive disorders involving the gastrointestinal tract, liver, biliary tree, gallbladder, and the pancreas.
Dr. Cohen was born and raised in Los Angeles, California before attending the University of California, Los Angeles (UCLA) where he graduated Phi Beta Kappa in 1976 with Special Honors in Chemistry and Biochemistry. While at UCLA, Dr. Cohen spent his junior year abroad as a University of California Foreign Exchange Student at the University of Stirling in Stirling, Scotland in the United Kingdom. He received his Doctor of Medicine degree from the University of Southern California School of Medicine (USC) in 1981. He moved to the San Francisco Bay Area where he completed a Residency in Internal Medicine at Santa Clara Valley Medical Center which is the Stanford University-Affiliated County Teaching Hospital located in San Jose, California. Following this, Dr. Cohen completed a Clinical Gastroenterology Fellowship at the University of New Mexico in Albuquerque, New Mexico. With a strong interest in academic medicine and research, Dr. Cohen subsequently spent nearly 5 years at Stanford University School of Medicine in Stanford, California. There, he carried out research on the molecular regulation of small intestinal brush border enzymes and published several papers. He was awarded a Clinical Investigator Award by the National Institutes of Health in Bethesda, Maryland. While at Stanford, Dr. Cohen also held a Clinical Faculty position teaching medical students, Internal Medicine Residents, and Gastroenterology Fellows.
In late 1991, Dr. Cohen’s focus turned to private practice medicine. He joined a private practice multispecialty group at Swedish Medical Center in Seattle, Washington. Dr. Cohen served on many hospital committees and eventually became Chief of Gastroenterology for Swedish Medical Center. While practicing in Seattle, he was named by peers and independent research as a Seattle Super Doctor and was voted by peers as one of Seattle’s Top Physicians in Seattle Magazine.
In 2014, Dr. Cohen left practice at Swedish Medical Center (though remains Honorary Staff) and joined a private practice group in Central Washington, building a very successful Gastroenterology program in Moses Lake, Washington for Confluence Health. He subsequently spent a short time as Gastroenterology and Endoscopy Medical Director helping build a new Gastroenterology program outside Olympia, Washington for Summit Pacific Medical Center. Dr. Cohen then joined Prosser Memorial Health in 2021 tasked with the building of a new gastroenterology program and as a practicing gastroenterologist to serve the patients of Benton and surrounding counties. This new gastroenterology program has grown quickly and will soon have 3 highly skilled and experienced gastroenterologists performing all routine as well as advanced/interventional gastroenterology procedures.
Dr. Cohen is a Fellow of the American Gastroenterological Association and Fellow of the American College of Gastroenterology. He is a member of the American Society for Gastrointestinal Endoscopy. He is Clinical Associate Professor of Medicine at the Elson S. Floyd College of Medicine at Washington State University. He is also Clinical Assistant Professor of Medicine in the Division of Gastroenterology at the University of Washington School of Medicine.
Gastroenterology & Internal Medicine
Meets Washington State Mandated Continuing Medical Education Requirements