Dr. Maria Mercedes Brenneisen, MD, FACP Internal Medicine - Hematology & Oncology Medicare: Not Enrolled in Medicare Practice Location: 21600 W El Grande Trl, Wickenburg, AZ 85390 Phone: 928-684-7274 Fax: 928-684-7274
Hematology & Oncology: An internist doctor of osteopathy that specializes in the treatment of the combination of hematology and oncology disorders. A doctor of osteopathy that is board eligible/certified by the American Osteopathic Board of Internal Medicine WAS able to obtain a Certificate of Special Qualifications in the field of Hematology and Oncology. The Certificate is NO longer offered.