Catherine Hall Van Poznak, MD
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About
Dr. Van Poznak received her medical degree from Cornell University Medical College and internal medicine residency training at The New York Hospital-Cornell Medical Center in New York City. Remaining in New York, she completed her fellowship in medical oncology at Memorial Sloan-Kettering Cancer Center (MSKCC) and started her oncology practice at MSKCC on the Breast Cancer Medicine Service. In 2006, Dr. Van Poznak joined the faculty of the University of Michigan where she is an active clinician in the U-M Rogel Cancer Center Breast Care Center. Her clinical and translational research is in breast cancer and its relationship to bone - including the diagnosis, treatment and prevention of osteoporosis in breast cancer patients, breast cancer biomarkers predicting site specific relapse, and bone metastases.
Areas of Practice
Breast Cancer, Osteoporosis and Breast Cancer, Breast Cancer Biomarkers, Bone Metastases
Expertise
Locations
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Breast Oncology Clinic | Rogel Cancer Center 1500 E Medical Center Dr
Floor 1
Ann Arbor, MI 48109-5916Get Directions -
Oncology Clinic | Brighton Center for Specialty Care 7500 Challis Rd
Entrance1, Level 1
Brighton, MI 48116-9416Get Directions
Insurance Accepted
University of Michigan Health participates with most health insurance plans.
Education & Training
Medical School or Training
Residency
Fellowships
Board Certifications
Research Overview
My research concentration is on breast cancer and its relationship with bone. There are three major issues that I research: (1) Osteoporosis as it effects women with breast cancer. Due to the prevalence of low bone mass in the general US population, and the frequency at which women are diagnosed with breast cancer, these two diseases commonly overlap. I am exploring the diagnosis, treatment and the prevention, of osteoporosis in patients with breast cancer (2) Breast cancer biomarkers predictive of site specific relapse (3) Bone metastases. I have several ongoing clinical trials and collaborative laboratory research efforts underway. It is my vision that research will change how we detect, prevent, and treat bone related problems of breast cancer patients.
Patient Ratings & Comments
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Patient Ratings
250 Patient Ratings
Patient Comments
February 26, 2026 - "I cannot thank Dr. Van Poznak enough for her exceptional care. Facing a [...] has been overwhelming, but she provided the exact level of data and clinical evidence I've needed to understand my treatment options. Her willingness to spend significant time walking me through the statistics and benefits of various therapies gave me the clarity and confidence to make an informed decision. I appreciate her thoroughness and willingness to answer all of my questions as well."
January 25, 2026 - "Dr. VanPoznak is absolutely wonderful, attentive and professional. She has cared for me for the last [...] years since my diagnosis. Her willingness to provide care which addresses all aspects, including continued diagnostics, is a unique level of dedication to patient health. I owe my good quality and continuation of life in large part to her. I am forever grateful."
January 7, 2026 - "Dr. Van Poznak is very caring and understanding."
December 3, 2025 - "Excellent service!! Dr. Van Poznak is outstanding!!"
September 6, 2025 - "Dr. Van Poznak is wonderful. She actually listens and tries to find solutions to problems."
August 29, 2025 - "Dr. VanPoznak takes her time to ensure that I really understand what she is telling me. She is an excellent teacher. She makes me feel secure and valued. She thoroughly reviewed my history and my concerns. She sent referrals to the doctors I need to see in the future to ensure I know what to do next. She is very caring."
August 13, 2025 - "Dr. Van Poznak explained all of my test results thoroughly and answered all of my questions. She wrote orders for PT and OT. She's the best doctor I have!"
August 13, 2025 - "My visist with Dr. Van Poznak was the best visit with a Doctor that I have ever had. She took her time to explain my results, explain her thought process and made sure all paper and referrals I needed were complete. My husband and I could not be more complimentary of her care."
July 2, 2025 - "Dr. VanPoznak, listened through the whole visit. I did feel empowered to make my own decision about the treatment I would receive."
June 12, 2025 - "Dr Van Poznak is awesome!"
