She obtained her medical school training at Wayne State University School of Medicine and performed her residency at a hospital affiliated with Case Western Reserve University. In Dr. Kosir's practice, she is particularly interested in breast cancer surgery and breast issues. She accepts Blue Cross/Blue Shield, Coventry, and United Healthcare Plans, in addition to other insurance carriers. Dr. Kosir is professionally affiliated with Wayne State University Physician Group (WSUPG), Harper University Hospital, and Karmanos Cancer Center.