He spent 10 years at St. Paul Ramsey Medical Center, serving on the staff of the Occupational Medicine Clinic and as Residency Director. Dr. Lohman serves as medical consultant to a number of corporations and government agencies. Dr. Lohman is also an assistant professor at the University of Minnesota's School of Medicine and School of Public Health. Dr. Sherief Mikhail is a phycisian board certified in Occupational and Environmental Medicine. Dr. Mikhail also graduated from the University of Minnesota in 1997 with a Masters in Public Health degree. Upon completion of his residency at St. Paul Ramsey Medical Center, he remained as a staff physician for the residency program. Dr. Mikhail also practiced primary care Occuptaional Medicine at Minnesota Occupational Health and is now in private practice at Specialists in Occupational and Environmental Medicine.