Meet the Hematology and Oncology 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.



William A. Conkright, MD

Board-certified in medical oncology and internal medicine

Dr. Conkright’s focus is on building relationships with his patients. He is generous with his time, using it to talk with patients and truly listen to them during every visit.



Timothy F. Goggins, MD

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

From his genuine desire to take care of people, Dr. Goggins takes a compassionate approach to his connections with patients. He strives to make a difference in patients’ lives and helps them feel more comfortable by treating every one of them like family.



Karen M. Gremminger, MD

Board-certified in medical oncology

When Dr. Gremminger sits down with patients, she believes that sharing all of the vital information she has gathered about their individual cases helps to involve and reassure them throughout their journeys.



Thomas A. Klinkhammer, MD

Board-certified in hematology and oncology

Dr. Klinkhammer specializes in hematology and oncology. He guides the way for patients by sharing the information that helps them understand and have a voice in their individual care plans.



Anthony W. Phillips, MD

Board-certified in hematology and oncology

Dr. Phillips specializes in hematology and oncology. From his personal experience with cancer, he brings a profound understanding of patients’ needs to navigate what’s ahead and participate in their care plans.



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.



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.



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.



Xin Yao, MD

Board-certified in hematology, medical oncology and internal medicine

With compassion and understanding, Dr. Xin Yao serves as a partner with patients. He listens carefully to patients’ needs and guides them to the right treatment options based on their goals and desires.