Meet the Hematology and Oncology Team

Matthie Weiss, MD

Matthias Weiss, MD, Ph.D.

Board-certified in hematology and medical oncology

Dr. Weiss specializes in hematology/oncology and benign and malignant tumors. He is recognized as one of the top community-based clinical oncology researchers. He believes research is essential to expanding treatment options, and strongly supports offering patients the option of clinical trials.



Nelida Sjak-Shie, MD

Nelida Sjak-Shie, MD, Ph.D.

Board-certified in hematology, medical oncology, hospice and palliative medicine

Dr. Sjak-Shie specializes in hematology and oncology. She believes in a holistic approach to cancer care, focusing on the physical consequences and the emotional and spiritual impact cancer has on patients and families. As one of the few female cancer physicians in the region, Dr. Sjak-Shie adds strength to the ThedaCare Cancer Care team



Edgard Badine, MD

Edgard A. Badine, MD, MBA

Specializes in Breast and Lung cancer and solid tumors

With triple board certification in internal medicine, medical oncology and hematology, Dr. Badine provides patients with comprehensive cancer care.



Mary Connely MD

Mary A. Connelly, MD

Board-certified in family medicine and integrative holistic medicine

As an experienced physician, Dr. Connelly blends conventional and complementary therapies in providing cancer care. Her approach focuses on holistic treatment methods that promote the wellness of mind, body and spirit



Shannon Schmidt, MD

Board-certified in Hematology and Medical Oncology.

Dr. Schmidt partners with patients to navigate the cancer journey.  She focuses on providing education and information and developing the most appropriate plan of care.



David Schrier, MD

Board-certified in medical oncology

Dr. Schrier treats the whole cancer patient and helps families during a crucial time in their lives. He combines state-of-the-art medical care with tremendous compassion and emotional support when caring for his patients.