Adenoma Detection Rate

Mitchell L. Cohen, MD, AGAF, FACG

Gastroenterology • Hepatology • Gastrointestinal Endoscopy

Medical 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

2024-present  Medical Director of Gastroenterology and Gastrointestinal Endoscopy Services, Prosser Memorial Digestive Health Center,

Prosser, Washington

2021-2024  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

2022–2024  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

2024  Gold Aspire Award (for recognition of outstanding work), Prosser Memorial Health, Prosser, Washington

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 (superdoctors.com)

2000, 2011  Voted by peers as one of Seattle’s Top Physicians, Seattle Magazine

2009-present  Castle Connolly Top Doctor (Top 7% of U.S. physicians) for 15 years straight (castleconnolly.com)

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–present  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, Gastrointestinal stenting, 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, Liver elastography

**OTHER PROCEDURES AVAILABLE THROUGH OUR OUTSIDE GI CONSULTANTS**

Treatment of dysplastic Barrett's esophagus, Endoscopic submucosal dissection (ESD), POEM esophagus & G-POEM,

Deep enteroscopy, Esophageal manometry and pH testing, Anorectal manometry

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 now has 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.

Certification badge from the American Board of Internal Medicine

Gastroenterology & Internal Medicine


Meets Washington State Mandated Continuing Medical Education Requirements