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Each of our physicians is board certified by the American Board of Internal Medicine. The DO versus MD designation for two of our physicians means they have received additional training in the body’s musculoskeletal system.










Dr. Vytas Kerpe

Vytas K. Kerpe, MD

Dr. Kerpe began practicing with our office in 1979.

He earned a Doctor of Medicine from Loyola University Stritch School of Medicine in Maywood, Illinois where he was elected to the Alpha Omega Alpha Honor Society. He then did a year of postgraduate work in pathology at Good Samaritan Hospital in Portland, Oregon followed by an internship and residency in internal medicine at Loyola University Medical Center. During his years in Sheboygan he has been instrumental in developing the St. Nicholas Hospital Diabetes Program. His areas of interest include management of diabetes, diseases of the kidneys which resulted in the development of the St. Nicholas Hospital Dialysis Unit in 1981, and care of the aging adult.

His personal interests include bicycling, scuba diving, fishing, and sailing.



Dr. Charles Schleevogt

Charles F. Schleevogt, MD

Dr. Schleevogt began practicing with our office in June 1993.

Dr. Schleevogt received a Bachelor Degree from St. Olaf College in Northfield, Minnesota. He then earned a Doctor of Medicine from the University of Illinois at Rockford in 1989. He completed an internal medicine residency and one year chief residency at the Abbott Northwestern Hospital in Minneapolis, Minnesota.

His personal interests include photography and biking.





Dr. Michael Johnson

Michael D. Johnson, MD

Dr. Johnson began practicing with our office in July 2000.

Dr. Johnson received a Bachelor of Science in Biology from the University of Michigan in Ann Arbor, Michigan. He then earned a Doctor of Medicine from The Ohio State University College of Medicine in Columbus, Ohio in 1997. While there he was awarded the Kass Fellowship from the Infectious Disease Society of America and the Samuel J. Roessler Research Scholarship. He completed a year-long internship and two year residency at the University of Colorado Health Sciences Center in Denver, Colorado. He focuses on diabetes, high blood pressure, and health concerns of the kidneys.

His personal interests include spending time with his family and mentoring children through coaching various sports teams.





Dr. Nicholas Barnes

Nicholas C. Barnes, DO

Dr. Barnes began practicing with our office in August 2005.

Dr. Barnes received a Bachelor of Arts with Honors in biological sciences from Goucher College, Baltimore, Maryland. During college he was active in research and awarded a Howard Hughes Fellowship for undergraduate research. He then earned a Doctor of Osteopathic Medicine from Midwestern University in Downers Grove, Illinois in June 2002. He completed an internal medicine residency at Loyola University Medical Center in Maywood, Illinois in June 2005.

His personal interests include sailing, travel, and animals of all kinds.





Dr. Elizabeth Zurich

Elizabeth L. Zurich, DO

Dr. Zurich began practicing with our office in August 2011.

Dr. Zurich received a Bachelor of Science in Biology from Emory University in Atlanta, Georgia in 2003. She then earned a Doctor of Osteopathic Medicine from Midwestern University in Downers Grove, Illinois. She completed an internal medicine residency at Rush University Medical Center in Chicago, Illinois. She also served as a hospitalist at Rush University. She enjoys counseling on weight loss management.

Her personal interests include spending time with her husband and two young boys as well as traveling and enjoying good food with family and friends. She is an active member of the Sheboygan Service Club and volunteers regularly with P.A.C.E.