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McMinnville Surgical Associates

Our Team

Sandeep Kumar, MDSandeep Kumar, MD

Board-Certified General Surgeon

Dr. Sandeep Kumar earned his bachelor’s degree in biology at Calvin College in Grand Rapids, Michigan and his master’s in biomedical engineering at the University of Iowa.

He earned his medical degree at the University of Iowa, Roy J. and Lucille A. Carver College of Medicine, where he earned a research distinction tract. 
Dr. Kumar completed an internship and residency in surgery at Oregon Health and Science University.

As a volunteer, he has served at St. Martha’s Hospital in Bangalore, India.

Dr. Kumar especially enjoys connecting with his patients and guiding them through the process of surgery and recovery.

Medical School: University of Iowa-College of Medicine
Residency: Oregon Health Sciences University Hospital

Erin Thompson, MDErin Thompson, MD

Board-Certified General Surgeon

Dr. Erin Thompson joined the surgery staff at Willamette Valley Medical Center in 2018 with special interests in bariatric surgery, antireflux surgery, gastrointestinal surgery, gallbladder surgery, hernia repair, and endoscopy.  She received her medical degree from the University of South Alabama College of Medicine in Mobile, Alabama. She then completed a surgery residency at Santa Barbara Cottage Hospital in Santa Barbara, California as well as a Fellowship in Minimally Invasive and Advanced Gastrointestinal Surgery, including Bariatric surgery, at Baystate Medical Center in Springfield, Massachusetts.

She is board certified in general surgery by the American Board of Surgery and holds professional memberships with the American College of Surgeons, American Society for Metabolic and Bariatric Surgery, and the Society of American Gastrointestinal and Endoscopic Surgeons.

Outside of work, Dr. Thompson enjoys hiking, biking, and reading a good book.

Medical School:
 University of South Alabama College of Medicine
Residency: Santa Barbara Cottage Hospital, Baystate Medical Center Fellowship: Baystate Medical Center

Michael Johnson, MDMichael Johnson, MD

Board-Certified General Surgeon

Medical School:
 University of Kansas School of Medicine
Residency: Good Samaritan Hospital


Sang-Gyou Rho, MDSang-Gyou Rho, MD

General Surgeon

Medical School:
 University of Florida School of Medicine
Residency: Santa Barbara Cottage Hospital