Memorial Family of ServicesHealthy Yakima
Our Physicians

Our Physicians

Memorial's Valley Imaging relies on eight radiologists from Yakima Valley Radiology to provide diagnostic radiology interpretation services. Our entire team of radiologists is board certified by the American Board of Radiology.

Joseph P. Gouveia, M.D.
David C. Stepanek, M.D.
John M. Henderson, M.D.
William J. Glenski, M.D.
William C. Feldmann, M.D.
Patrick O'Brien, M.D.
Daniel Pak, M.D.
Gregory A Wright, M.D.

JOSEPH P. GOUVEIA, M.D.

M.D. degree received from the University of Arizona College of Medicine. Diagnostic Radiology Residency completed at Rush Medical College-Presbyterian St. Luke's Medical Center in Chicago, Illinois.

Fellowship training and teaching at the University of Chicago in Specialized Diagnostic Imaging.

Publications include: "Pediatric Bone Development and Related Fractures", Medical Radiography and Photography.

Radiologist with Yakima Valley Radiology since 1980.

DAVID C. STEPANEK, M.D.

M.D. degree received from the University of Illinois. Internship and residency completed at Rush-Presbyterian St. Luke's Hospital in Chicago, Illinois.

Fellowship in Neuroradiology performed at the University of Oregon Health Science Center in Portland, Oregon.

Publications include: "Adult Onset Seizures, A Lesson in Differential Diagnosis." Plato Computer Assisted Instruction Network, University of Illinois.

Radiologist with Yakima Valley Radiology since 1981.

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JOHN M. HENDERSON, M.D.

M.D. degree received from the University of Kansas School of Medicine in Kansas City, Kansas.

Internship and residency in Internal Medicine completed at the University of Kansas.

Diagnostic Radiology Residency performed at the University of New Mexico Hospital in Albuquerque, New Mexico.

Publications include: Henderson, J.M., Liechty, E.J., Jahnke, R.W. "Liver Involvement in Hereditary Hemorrhagic Telangiectasis." Journal of Computer Assisted Tomography 5(5): 773-776, October, 1991. Henderson, J.M., Mettler, F.A., Jr., Wicks, J.D., Thornbury, J.R., Bartow, S.A. "Urologic Imaging and Correlation with Serum Laboratory Determinations in Standing Gynecologic Malignancies." Published October, 1983. Radiologist with Yakima Valley Radiology since 1982.

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WILLIAM J. GLENSKI, M.D.

M.D. degree received from the Mayo Medical School in Rochester, Minnesota. General Surgery internship and Urology residency at the Mayo Graduate School of Medicine.

Diagnostic Radiology residency performed at St. Louis University School of Medicine.

Served as Chief Resident, Diagnostic Radiology, Saint Louis University School of Medicine.

Radiologist with Yakima Valley Radiology since 2000.

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WILLIAM C. FELDMANN, M.D.

M.D. degree received from Baylor College of Medicine in Houston, Texas. Transitional internship completed at St. Joseph Hospital in Houston, Texas. Diagnostic Radiology residency performed at University of California San Diego Medical Center.

Served as Clinical Instructor of Diagnostic Radiology at Eastern Virginia Medical School from October 1994 through May 2001. Diagnostic Radiologist with Medical Center Radiology, Inc. in Norfolk, Virginia from 1994 to 2001.

Radiologist with Yakima Valley Radiology since 2001.

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PATRICK O'BRIEN, M.D.

M.D. degree received from University of North Carolina School of Medicine in Chapel Hill, NC.

National Library of Medicine Fellow in Informatics completed at University of North Carolina.

Diagnostic Radiology Residency performed at University of New Mexico in Albuquerque, NM.

Publications include: PR O'Brien; CW Winalski; JC Carrino; DA Solomon; BA Weissman: Structured Reporting of Knee MRIs: Template Creation, Database Generation and Future Goals: SCAR 2001, Salt Lake City UT Poster Presentation. PR O'Brien; SM Downs and J Loonsk (1996): Prototype of DAAT (Decision Analysis Aid Tool): An Aid to Medical Decision Making Over the World Wide Web, in: Journal of the American Medical Informatics Association Proceedings 1996, p. 926. Hanley & Belfus, Inc.RG Thurman; HD Cooner; KT Knecht; LB Lacagnin, PR O'Brien, and RP Mason (1991): Spin Trapping in the Perfused Liver: Carbon Tetachloride as a Model System. In: Perfused Liver: Clinical and Basic Applications, ed. FA Ballet and RG Thurman, 69-82. London: John Libbey & Company Ltd.

Prior experience as Diagnostic Radiologist in Kalispell, MT and Portland, OR from 2000 - 2007.

Radiologist with Yakima Valley Radiology since December 2007.

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DANIEL PAK, M.D.

M.D. degree received from Georgetown University School of Medicine in Washington, D.C.

Internship completed at Madigan Army Medical Center in Tacoma, Washington. Diagnostic Radiology Residency performed at Brook Army Medical Center in San Antonio, TX.

Publications include: Boyle ER, Pak D, Williams JB. Motion Artifact with Slot Scanning Direct Digital Mammography, American Journal of Radiology 1999; 172:697-701. Motion Artifact with Slot Scanning Direct Digital Mammography presentation at American Roentgen Ray Society meeting, April 30, 1998. Graduate of United States Military Academy at West Point, NY. Active Duty in the US Army through October 2005 with prior professional experience in New Mexico and Seattle, Washington.

Radiologist with Yakima Valley Radiology since January 2007.

GREGORY A. WRIGHT, M.D.

M.D. degree received from Uniformed Services University of the Health Sciences, Bethesda, MD.

Transitional Internship completed at Oakland Naval Hospital at Oakland, CA. Diagnostic Radiology Residency performed at Naval Medical Center San Diego at San Diego, CA.

Active Duty in the US Navy through August 2007.

Radiologist with Yakima Valley Radiology since September 2007.

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