OUR PROVIDERS

THE RIGHT
RADIOLOGISTS & PA'S

for Portland
patients and physicians.

Our Providers

RSN has earned its reputation as the clear choice for Portland patients, owing to our exceptional care and excellent customer service. We have access to the full spectrum of medical imaging modalities, and our board-certified radiologists— many of whom have completed subspecialty fellowship training—provide complete and accurate reports promptly. Our radiologists work with our highly skilled medical staff to provide both patients and referring physicians with individualized attention and service.

RSN radiologists have held distinguished positions at prominent medical schools and institutions. They have conducted groundbreaking research and authored numerous articles and abstracts. Many RSN physicians are also active participants in organizations such as the American College of Radiology, Radiological Society of North America, Society of Interventional Radiology, and American Roentgen Ray Society.

To learn more about each member of our medical team, please click on the physicians’ names below.

Deb Arnold Md

Deborah Arnold, MD

Deborah Arnold, MD

Board-Certified: American Board of Radiology

Residency: Oregon Health and Science University, Portland, OR; Radiology

MD: University of Washington School of Medicine, Seattle, WA

Amanda Beer, MD

Amanda Beer, MD

Amanda Beer, MD

Board-Certified: American Board of Radiology

Fellowship: University of Virginia Health System; Breast Imaging

Residency: University of Virginia Health System

MD: University of North Carolina School of Medicine

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Alexander Boscanin, MD

Alexander Boscanin, MD

Board Eligible: American Board of Radiology

Fellowship: Dotter Interventional Institute, Oregon Health and Science University, Interventional Radiology

Residency: Oregon Health and Science University

MD: Loma Linda University School of Medicine, Loma Linda CA

Jon Carnell Md

Jonathan Carnell, MD

Jonathan Carnell, MD

Board Certified: American Board of Radiology

Fellowship: University of WA Medical Center, Seattle, WA; Body Imaging

Residency: Loyola University Medical Center, Maywood, IL

MD: University of Kansas School of Medicine, Kansas City, KS

David Cheng Md

David Cheng, MD

David Cheng, MD

Board Certified: American Board of Radiology

Fellowship: Dotter Interventional Institute, Oregon Health & Science University, Portland, OR; Interventional Radiology

Residency: Oregon Health Sciences University, Portland, OR

MD: Medical College, GA

Henry Chow Md

Henry Chow, DO

Henry Chow, DO

Board Certified: American Board of Radiology

Fellowship: UCSF, San Francisco, CA; Abdominal Imaging

Residency: Norwalk Hospital, Norwalk, CT

MD: Touro University, College of Osteopathic Medicine, Vallejo, CA

Charles Croteau Do

Charles Croteau, DO

Charles Croteau, DO

Board-Certified: American Board of Radiology

Fellowship: The Ohio State University Wexner Medical Center; Neuroradiology

Residency: Michigan State University College of Osteopathic Medicine

DO: University of Health Sciences College of Osteopathic Medicine

Yan Gao Md

Yan Gao, MD

Yan Gao, MD

Board-Certified: American Board of Radiology

Fellowship: University of Virginia, Charlottesville, VA; Body Imaging

Residency: Methodist Hospitals in Memphis, University of Tennessee, TN; Radiology

MD: Shanxi Medical College, Taiyuan City, Shanxi Province P.R. China

Mark Gibson Md

Mark Gibson, MD

Mark Gibson, MD

Board-Certified: American Board of Radiology

Fellowship: Dotter Interventional Institute, Oregon Health & Science University, Portland, OR; Interventional Radiology

Residency: Eastern Virginia Medical School, Norfolk, VA; Radiology

MD: Indiana University School of Medicine, Indianapolis, IN

Gohman

Lorraine Gohman, PA-C

Lorraine Gohman, PA-C

Bachelor of Science: Winona State University, Winona, MN

Master of Science in Physician Assistant Studies: Central Michigan University, Mount Pleasant, MI

Jim Hasenauer Md

James Hasenauer, MD

James Hasenauer, MD

Board-Certified: American Board of Radiology

Fellowship: University of Alabama, Birmingham, AL; Musculoskeletal Radiology

Residency: Detroit Medical Center, Wayne State University School of Medicine, Detroit, MI; Radiology

MD: Saint George’s University, Grenada, West Indies

Hasnain Hasham, MD

Hasnain Hasham, MD

Hasnain Hasham, MD

Board-Certified: American Board of Radiology

Fellowship: Dotter Interventional Institute, OHSU

Residency: University of Kansas Medical Center

MD: Creighton University School of Medicine

Andrewjohnson

Andrew Johnson, PA-C

Andrew Johnson, PA-C

Bachelor of Science: Portland State University, Portland, OR

Master of Science in Physician Assistant Studies: Oregon Health and Science University, Portland, OR

Rich Koesel Md

Richard Koesel, MD

Richard Koesel, MD

Board-Certified: American Board of Radiology

Fellowship: Oregon Health and Science University, Portland, OR; Neuroradiology

Residency: Oregon Health and Science University, Portland, OR; Radiology,

MD: Albert Einstein College of Medicine, Bronx, NY

Scott Landreth Rsn

Scott Landreth, MD

Scott Landreth, MD

Board-Certified: American Board of Radiology

Fellowship: Oregon Health and Science University; Cardiothoracic Imaging

Residency- Oregon Health and Science University

MD: Medical University of South Carolina

Spencer Lewis Rsn

Spencer Lewis, MD

Spencer Lewis, MD

Board Certified- American Board of Radiology

Fellowship: Standford Medicine; Body Imaging

Residency: University of Washington Medical Center

MD: University of Michigan Medical School

Nicholas Meermeier Rsn

Nicholas Meermeier, MD

Nicholas Meermeier, MD

Board-Certified: American Board of Radiology

Fellowship: University of Washington; Musculoskeletal Imaging

Residency: Creighton University

MD: Oregon Health and Science University

Lyudmila Morozova Md

Lyudmila Morozova, MD

Lyudmila Morozova, MD

Fellowship: Oregon Health Science University; Cardiothoracic Radiology

Residency: Diagnostic Radiology, Oregon Health Science University

MD: Oregon Health Science University, Portland, OR

Brian Mumford Md

Brian Mumford, MD

Brian Mumford, MD

Board Certified: American Board of Radiology

Fellowship: Oregon Health Science University, Portland, OR; Neuroradiology

Residency: Oregon Health Science University, Portland, OR; Radiology

MD: University of Utah, Salt Lake City, UT

Mikhail Nekhline Md

Mikhail Nekhline, MD

Mikhail Nekhline, MD

Board-Certified: American Board of Radiology

Fellowship: Johns Hopkins University, Baltimore, MD; Cross Sectional Body Imaging

Residency: Henry Ford Hospital, Detroit, MI; Diagnostic Radiology

MD: Oregon Health and Science University School of Medicine, Portland, OR

Michael Neuman Md

Michael Neuman, MD

Michael Neuman, MD

Board-Certified: American Board of Radiology

Residency: Michael Reese Hospital and Medical Center, Chicago, IL; Radiology

MD: University of Wisconsin Medical School, Madison, WI

Hayley Oligane DO

Hayley Oligane, DO

Hayley Oligane, DO

Board certified: American Board of Radiology

Fellowship: University of Pittsburgh Medical Center, Women’s Imaging

Residency: University of Pittsburgh Medical Center

DO: Nova Southwest University

Sarah Rogers Md

Sarah Rogers, MD

Sarah Rogers, MD

Board Certified: American Board of Radiology

Fellowship: Oregon Health and Science University, Portland, OR; Neuroradiology

Residency: Oregon Health and Science University, Portland, OR

MD: Oregon Health and Science University, Portland, OR

Shaz Sharafi Rsn

Shahrzad Sharafi, MD

Shahrzad Sharafi, MD

Board-Certified: American Board of Radiology

Fellowship: Oregon Health and Science University; Breast Imaging

Residency: Oregon Health & Science University

MD: Oregon Health & Science University

Carmen Timberlake Md

J. Carmen Timberlake, MD

J. Carmen Timberlake, MD

Board-Certified: American Board of Radiology

Fellowship: University of Rochester Medical Center, Rochester, NY; Musculoskeletal Radiology

Fellowship: Oregon Health and Science University; Women’s Imaging

Residency: University of Rochester Medical Center, Rochester, NY; Radiology

MD: University of North Carolina School of Medicine at Chapel Hill, Chapel Hill, NC

Jim Tsai Md

James Tsai, MD

James Tsai, MD

Board-Certified: American Board of Radiology

Fellowship: University of California at Los Angeles — Los Angeles Medical Center, Los Angeles, CA; Neuroradiology

Residency: University of California at Los Angeles — Los Angeles Medical Center, Los Angeles, CA; Radiology

MD: Ohio State University College of Medicine, Columbus, OH

Jenny Wang Md

Jenny Wang, DO

Jenny Wang, DO

Board-Certified: American Board of Radiology

Fellowship: Henry Ford Health System; Breast Imaging & Body Imaging

Residency: Michigan State University Department of Radiology McLaren-Oakland Medical Center

DO: Western University of Health Sciences

Stacy Yamasaki Md

Stacy Yamasaki, MD

Stacy Yamasaki, MD

Board-Certified: American Board of Radiology

Fellowship: University of Michigan Department of Radiology, University Hospitals, Ann Arbor, MI; Computed Tomography, Magnetic Resonance Imaging, Ultrasound

Residency: University of Texas Health Science Center, Houston, TX; Radiology

MD: State University of New York at Stony Brook School of Medicine, Health Sciences Center, Stony Brook, NY