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Dale A. Nelson, M.D.

Dr. Nelson was educated at the University of Wisconsin Pharmacy School and Medical School and graduated in 1976.  His pastimes are hiking, nordic walking and traveling.  In 1981 he co founded Spokane Internal Medicine with Drs Glen Ruark and Paul Gibb and presently confines his practice to Echocardiography.


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Gregory Doering, M.D.

Dr. Doering grew up in Boise, Idaho. He did a four year tour in the Air Force as a medic and then married Peggy in 1974. He then finished undergraduate education at the University of South Dakota in 1975, and moved to the Dominican Republic for four years of medical school. He came back to the University of South Dakota for his internship and residency in Internal Medicine. He moved to Spokane, Washington in 1983 into private practice. In 1993 he joined Spokane Internal Medicine. He and Peggy have raised three children, Laura, Chris, and William. His special interests include family time, fishing, snow skiing, and construction.


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John Sestero, M.D.

Dr. Sestero was raised in Spokane. He went to college at the University of Portland and then attended Creighton University Medical School in Nebraska. After completing his residency at the University of Minnesota, he returned to Spokane and started practicing with Spokane Internal Medicine in 1998. He enjoys cycling, skiing and spending time with his wife and two daughters.


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Andrew Chester, M.D.

Dr. Chester has practiced at S.I.M. since 2001 when he and his wife moved to the Spokane Valley to be closer to her family in Canada. He was born and raised in Texas, with an undergraduate degree from Texas A&M Univ. and his medical degree from the Univ. of Texas. Internal medicine residency was completed in Ohio where he met his wife, a local oncologist. Effective communication, timely care, and getting to know his patients on a personal level are what he prides himself on. He and his wife spend free time cheering on their two daughters at soccer and swimming, and he enjoys playing basketball and golf.


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Michael C. Kerkering, M.D.

Dr. Kerkering was raised in Spokane and attended Lewis and Clark High School. He received his bachelor’s degree in molecular biology from the University of Washington and graduated from the University of Washington School of Medicine. He was a medical resident, chief resident, and teaching attending physician at Sacred Heart and Deaconess Medical Centers in Spokane. His hobbies include spending time with his family and outdoor sports of any kind. Dr. Kerkering enjoys treating the broad range of patients presenting to a general internal medicine office, and particularly enjoys working with the geriatric population. He continues to teach medical students and residents as part of the University of Washington School of Medicine clinical faculty.


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Brian T. Yates, M.D.

Dr. Yates is board certified in Internal Medicine and has extensive and diverse practice experience spanning nearly two decades. Specific interests include adult diabetes, hypertension, lipid disorders, and disease prevention. He completed his undergraduate studies at Washington State University and attended the University of Washington School of Medicine. Following an internship year at Naval Hospital San Diego he served as a medical officer in the US Navy for four years. In 1995 he returned to Washington and completed residency training at Internal Medicine Spokane. He and his family have been active members of the Spokane community since that time.


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Robert Hustrulid, M.D.

Dr Robert Hustrulid joined Spokane Internal Medicine in 2007. He graduated from the University of Minnesota and began practicing in the Spokane area in 1971. Dr. Hustrulid is Board Certified and specializes in Geriatric Internal Medicine.


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David Fischer, M.D.

Dr. Fischer grew up in the Northwest. Obtained bachelor degree from Walla Walla University. Graduated from Loma Linda University School of Medicine. Internal Medicine Residency trained here in Spokane. Internal Medicine mentor for U. of Washington medical students. Special interest in diabetes management. Enjoys playing with his two little kids, waterskiing, wakeboarding in the summer, and snowskiing in the winter.


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Kristina K. Swiggum, M.D.

Dr. Swiggum attended the University of Southern California where she received her bachelor’s degree (Magna Cum Laude) and Medical degree she completed her medical residency at Hunting Hospital, a USC affiliated residency program. She began practicing Internal medicine in 2006 in San Antonio, Texas as her husband finished up his fellowship training. She and her husband Joe, a pulmonologist, and their son moved to Spokane in 2009. Dr. Swiggum values effective communication with patients as well as ready access during times if acute illness. She joined Spokane Internal Medicine in the fall of 2009 and is looking forward to growing her family as well as her practice here in the Spokane Valley.


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Ingrid Lintmaer Olaru, M.D.

Dr. Ingrid Lintmaer Olaru, a native of Romania, currently resides with her family in Coeur D'Alene, Idaho. She attended University of Medicine “Carol Davila” in Bucharest, Romania. She immigrated to the United States in 2003 and completed two years of research on cellular growth factors and bone marrow transplant at the University of Washington Department of Hematology in Seattle where she met her husband. In 2006 Dr. Lintmaer Olaru moved with her family to Spokane to complete her Internship and Residency in Internal Medicine at Sacred Heart Medical Center. In 2010 she started practicing Internal Medicine as a Hospitalist at Kootenai Medical Center in Coeur D’Alene, Idaho and at Sacred Heart Medical Center in Spokane. She joined Spokane Internal Medicine in the Summer of 2013. Dr. Lintmaer Olaru enjoys working with geriatric patients and has a special interest in infectious diseases and chronic disease management. She and her husband, Dr. Serban A. Olaru, a private practice dentist in Coeur D’Alene, enjoy spending their free time with their son in the outdoors fishing, hiking and gardening.


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Lynn R. Naumowicz, A.R.N.P.

Lynn Naumowicz grew up in Spokane, and married George in 1970. She went to Spokane Falls Community College attaining a Associate degree in 1972. She took a break from school to raise two children, Nikki and Kyle, and during those years, worked part time in Doctor's offices. She returned to school and completed a Bachelor's degree in Nursing in 1991, and spent 3 years as a staff nurse at Sacred Heart Medical Center on a Cardiac unit. She pursued a Master's degree in Science as an Advanced Practice Nurse, which she completed in August 1996. After Board Certification as an ARNP, she started practice with Spokane Internal Medicine in October 1996. Her personal interests include enjoying 5 grandchildren, traveling, cooking and gardening.


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Carol L. Good, A.R.N.P.

Carol grew up in Spokane and graduated from Gonzage Prep High School and obtained her Bachelor's degree in Nursing from Washington State University in 1989. She was a nurse in the Air Force for four years, prior to obtaining her Masters Degree in Nursing from the University of Washington in 1995. She has been a nurse practitioner at Spokane Internal Medicine since 2000. She enjoys working with the variety of patients at Spokane Internal Medicine and especially her role as a certified diabetes educator.


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Vicki Stevens, A.R.N.P.

Vicki grew up in Moscow, Idaho and attended nursing school in the Spokane area. She received her bachelor degree in nursing in 1984 from the Intercollegiate Center for Nursing (INC). She went to work at Sacred Heart Medical Center, initially as a cardiac nurse and then as a clinical educator. While she was working there, she returned to ICN to obtain her masters degree in nursing and her family nurse practitioner certification. In 2000, she began her nurse practitioner career with Northwest Renal Services, practicing in internal medicine with an emphasis on nephrology. Vicki joined Spokane Internal Medicine in 2007. She enjoys family time and traveling with her husband.


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Lori Feagan, A.R.N.P.

Lori Feagan has resided in the Spokane Valley area for nearly 30 years. She obtained her undergraduate and Master of Nursing degree from Washington State University, and is a certified Family Nurse Practitioner. Lori joined Spokane Internal Medicine in 2009 after a 20-year career in critical care nursing. She enjoys spending time with her son and his young family, various outdoor activities, and international travel.