• Undergraduate: University of Maryland, B.A., 1980
• Medical: University of Maryland School of Medicine, M.D., 1984
• Internship/residency: University of Maryland, Baltimore V.A. Hospitals, 1984-1987
• Nephrology fellowship: University of Maryland Medical System, 1987- 1989
• Board Certified: Internal Medicine 1988, Nephrology 1990; Recertified Nephrology 2000
• Chief Residency: University of Maryland, Baltimore V.A. Hospitals, 1989-1990
• Instructor in Medicine: University of Maryland, Department of Medicine, 1989-1990
• Assistant Professor of Medicine, University of Maryland, Department of Medicine, Division of Nephrology, 1990-1993
• Private Practice: Drs. Carey, Chintrisna, Turer, Greenwell, & Behrens, P.A.,1994-1999
• Private Practice: Mid-Atlantic Nephrology Associates, P.A., 1999-present
• Medical Director: DaVita Catonsville Dialysis Center
• Member: Maryland Commission on Kidney Disease
• Board of Directors: Kidney Foundation of Maryland, 1998-2003
• Chairman Medical Advisory Board: National Kidney Foundation of Maryland. 2000-2003
• Chief of Nephrology: St. Agnes Hospital  2017    

Dr. Behrens sees patients at the following location:

• Catonsville

Dr. Behrens is affiliated with UMMC Midtown Campus (Maryland General), Mercy Medical Center, St. Agnes Hospital, and UMMS.