Our Physicians and Surgeons

All of our physicians are fully trained in general surgery and have special training in the medical and surgical problems of the colon, rectum and anus.

Dr. Billingham Dr. Richard Billingham obtained his B.A. degree from Ohio Wesleyan University and his M.D. degree from the University of Rochester. He began practice in Seattle in 1979, and is Clinical Professor of Surgery at the University of Washington. He is a Fellow of the American College of Surgeons, the American Society of Colon and Rectal Surgeons and a member of numerous professional societies.  Dr. Billingham is a past president of the American Society of Colon & Rectal Surgeons.

Dr. Kratz Dr. Rodney Kratz attended Wabash College where he obtained his B.A. degree in English Literature in 1993 with honors including Phi Beta Kappa and Magna Cum Laude. He received his M.D. degree from Indiana University in 1997 with honors including A.O.A. He completed his General Surgery Residency at Indiana University in 2002. He went on to the Northwest Colon and Rectal Clinic in Seattle, Washington where he completed a fellowship in colon and rectal surgery in June 2003. Dr. Kratz returns to Northwest Colon and Rectal Clinic after 3 years of practice in Indiana. He specializes in diseases of the colon and rectum with an interest in laparoscopic colon and rectal surgery. Dr. Kratz is board certified with the American Board of Surgery and the American Board of Colon and Rectal Surgery. He is a member of the American Medical Association, American College of Surgeons, American Society of Colon and Rectal Surgery, Northwest Society of Colon and Rectal Surgeons and the Indiana State Medical Association.

Katherine Markell Dr. Katharine Markell obtained her B.S. degree in biology from Cumberland University in Lebanon, TN in 1993 with Magna Cum Laude honors. She received her M.D. degree from the University of Miami, School of Medicine in 2002. She completed her General Surgery Residency at Madigan Army Medical Center in Tacoma, WA in 2007 and recently completed a Burn Fellowship at the United States Army Institute of Surgical Research in San Antonio, TX. Dr. Markell is board certified with the American Board of Surgery. She is a member of the American Medical Association, American College of Surgeons, American Society of Colon and Rectal Surgery and the Northwest Society of Colon and Rectal Surgeons. She is a Major in the United States Army. Sche is married and enjoys water and snow skiing, golfing and rock climbing with her husband.