Our Team


Michael D. Calabrese, M.D.

Michael D. Calabrese, M.D., a Buffalo native, has been practicing medicine in the Western New York area for over 30 years. He began his medical education at the Universidad Autonomous of Guadalajara in Jalisco, Mexico and completed his medical school career at St. Louis University in St. Louis, Missouri. After his graduation, Dr. Calabrese completed a rotating internship in cardiology, surgery, internal medicine and pediatrics at Deaconess Hospital in St. Louis. He then returned to Buffalo, New York, where he joined and completed a board certified residency program in obstetrics and gynecology. During and after his residency, his interest shifted to emergency rooms where Dr. Calabrese worked as an emergency room physician at Columbus, Sheehans Memorial, Medina and Brooks Memorial Hospitals. In the emergency room, Dr. Calabrese tended to trauma patients and victims of motor vehicle collisions, which inspired a special interest in neck and back injuries. In 1999 Dr. Calabrese founded Medical Care of WNY, a multidisciplinary injury and accident practice that delivers to the community medical treatment, physical therapy, and rehabilitative care for all soft tissue injuries. Along the course of his career, he has continued primary care education courses and became a primary care doctor for HMOs and most insurance companies. He has been certified for the past 20 years in treating Workers’ Compensation injuries. Dr. Calabrese’s philosophy encompasses the thought that the body has a unique way of healing itself when given proper attention and consideration to the injury. Dr. Calabrese also believes that patient compliance is a key factor in progress towards better health. Dr. Calabrese welcomes all patients to his practice as family and receives a special satisfaction in his abilities to integrate and treat patients as a whole (mind, body, & spirit). Collectively at Medical Care of WNY, Dr. Calabrese and staff are delighted to provide the community with a comprehensive approach to their healthcare.



 Lisa Achtziger, CMOM

Lisa Achtziger received her Associate Degree from Hilbert College and her B.S. in Business Administration from Buffalo State College. She is a Certified Medical Office Manager and Notary Public. Ms. Achtziger has worked with Dr. Calabrese’s practice for over 25 years and has been with Medical Care of WNY since its inception. Lisa is an avid supporter of literacy and the American Cancer Society, and frequently participates in 5k races for various causes.


Dr. Zwara

Antonietta Zwara, RN

Antonietta Zwara received her Associate of Applied Sciences Degree in Nursing from Trocaire College in Buffalo, New York. She specializes in OB, primary care, urology, and has been a Registered Professional Nurse since 1995. Antonietta has been a valuable member of Medical Care of WNY since 2008. Outside of work, Antonietta enjoys spending time with her grandchild and snowmobiling during Buffalo’s heavy winters!