Physicians & Providers
Spine Surgeons
Thomas Rieser
M.D., F.A.A.O.S.
Dr. Rieser is the founding physician at Midwest Spine Institute. Since 1987, he has pursued and shared his clinical excellence in new techniques and...
Glenn Buttermann
M.D., M.S., F.A.A.O.S.
Known all over the world for his extensive research and journal articles, Dr. Buttermann spends several days each month in research activities...
Stefano Sinicropi
M.D., F.A.A.O.S.
Dr. Sinicropi’s passion for helping patients return to an active and pain-free life is evident in the testimonials from his satisfied patients...
Daniel Hanson
M.D., F.A.A.O.S.
Born and raised in Minnesota, Dr. Hanson comes to Midwest Spine Institute with several years of experience...
Interventional Pain Specialists
Louis Saeger
M.D., F.A.C.P.M.
As the first interventional pain physician at Midwest Spine Institute, Dr. Saeger helped develop our spa-like interventional pain centers...
Adam Locketz
M.D., D.A.B.P.M.R.
Dr. Locketz combines his training as a Physical Medicine and Rehabilitation physician with his expertise in interventional pain management to help...
Mark Janiga
M.D., D.A.B.P.M.
Mark Yamaguchi
M.D., D.A.B.A.
Physician Assistants
Steven Lawson
PA-C
Steve brings a number of years of experience in providing excellent spine evaluation and treatment for our patients. He works closely with...
Eric Salman
PA-C
With several years of experience in evaluation and treatment of patients with back and neck pain, Eric works closely with Dr. Buttermann...
Jacob Guth
PA-C
Jacob is dedicated to helping patients return to an active life. He works closely with Dr. Sinicropi, in addition to the rest of the...


