Joining Ironwood Cancer & Research Centers in 2004, Dr. Shtivelband received his medical degree and PhD in Experimental Hematology in Russia. After Internal Medicine Residency, Dr. Shtivelband received fellowship training in Hematology and Medical Oncology at MD Anderson Cancer Center in Houston, where he stayed for an additional year to participate in experimental research. Treating patients with all kinds of malignancies and benign hematological problems, Dr. Shtivelband has particular interest in developing research programs to bring the newest advances in the field of Oncology and Hematology to our community. Dr. Shtivelband also heads the Ironwood Cancer & Research Center's research program. He is Board Certified in Internal Medicine, Hematology and Medical Oncology. Dr. Shtivelband is rated as a Distinguished provider by MediFind in the treatment of Hemochromatosis. His top areas of expertise are Hemochromatosis, Non-Small Cell Lung Cancer (NSCLC), Plasmacytoma, and Lung Cancer.

Robert Rice is a Hematologist Oncology specialist and an Oncologist in Parker, Arizona. Dr. Rice is rated as an Experienced provider by MediFind in the treatment of Hemochromatosis. His top areas of expertise are Mantle Cell Lymphoma (MCL), Multiple Myeloma, Paget Disease of the Breast, and Inflammatory Breast Cancer. Dr. Rice is currently accepting new patients.

John Bibb is an Oncologist and a Hematologist Oncology provider in Phoenix, Arizona. Dr. Bibb is rated as a Distinguished provider by MediFind in the treatment of Hemochromatosis. His top areas of expertise are Monoclonal Gammopathy of Undetermined Significance (MGUS), Schnitzler Syndrome, Hemochromatosis, and Pleuropulmonary Blastoma. Dr. Bibb is currently accepting new patients.

Hamdy Mohtaseb is a Hematologist Oncology specialist and a Hematologist in Kingman, Arizona. Dr. Mohtaseb is rated as a Distinguished provider by MediFind in the treatment of Hemochromatosis. His top areas of expertise are Juvenile Primary Osteoporosis, Hemochromatosis, Monoclonal Gammopathy of Undetermined Significance (MGUS), and Colorectal Cancer.

Ravitharan Krishnadasan is a Hematologist Oncology specialist and a Hematologist in Tucson, Arizona. Dr. Krishnadasan is rated as a Distinguished provider by MediFind in the treatment of Hemochromatosis. His top areas of expertise are Acute Myeloid Leukemia (AML), Acute Myeloblastic Leukemia without Maturation, Childhood Acute Myeloid Leukemia, Bone Marrow Transplant, and Bone Marrow Aspiration. Dr. Krishnadasan is currently accepting new patients.

David Cho is a Hematologist Oncology specialist and a Hematologist in Scottsdale, Arizona. Dr. Cho is rated as a Distinguished provider by MediFind in the treatment of Hemochromatosis. His top areas of expertise are Hemochromatosis, Paget Disease of the Breast, Lung Cancer, and Pleuropulmonary Blastoma. Dr. Cho is currently accepting new patients.

Richard Rosenberg is a Hematologist Oncology specialist and an Oncologist in Tucson, Arizona. Dr. Rosenberg is rated as a Distinguished provider by MediFind in the treatment of Hemochromatosis. His top areas of expertise are Lung Cancer, Pleuropulmonary Blastoma, Familial Colorectal Cancer, and Colorectal Cancer. Dr. Rosenberg is currently accepting new patients.

Laurie Chen is a Hematologist Oncology specialist and a Hematologist in Tucson, Arizona. Dr. Chen is rated as a Distinguished provider by MediFind in the treatment of Hemochromatosis. Her top areas of expertise are Pleuropulmonary Blastoma, Hemochromatosis, Agranulocytosis, and Chronic Familial Neutropenia. Dr. Chen is currently accepting new patients.

Kalyan Mantripragada is a Hematologist in Gilbert, Arizona. Dr. Mantripragada is rated as a Distinguished provider by MediFind in the treatment of Hemochromatosis. His top areas of expertise are Pulmonary Embolism, Hemochromatosis, Agranulocytosis, Childhood Iron Deficiency Anemia, and Gallbladder Removal.

Allan Morazan is an Internal Medicine provider in Prescott, Arizona. Dr. Morazan is rated as a Distinguished provider by MediFind in the treatment of Hemochromatosis. His top areas of expertise are Paget Disease of the Breast, Breast Cancer, Familial Colorectal Cancer, and Colorectal Cancer.

Aung Bajaj is a Hematologist Oncology provider in Tucson, Arizona. Dr. Bajaj is rated as a Distinguished provider by MediFind in the treatment of Hemochromatosis. His top areas of expertise are Hemochromatosis, Agranulocytosis, Chronic Familial Neutropenia, and Familial Prostate Cancer.

Dr. Anita Koszyk-Szewczyk joined Ironwood Cancer & Research Centers in July 2009, after completing her Hematology and Oncology training at Penn State University Hershey Medical Center. Dr.Szewczyk has earned her medical degree at Jagiellonian University Collegium Medicum in Krakow, Poland and Honours Biology at McMaster University Hamilton, Canada. She served as Chief Fellow at Penn State University and her special interests include all forms of adult cancers and hematological disorders with special interest in Breast Cancer. She is originally from Poland and Canada. She is board certified in Internal Medicine, Hematology and Oncology. Dr. Koszyk is rated as an Advanced provider by MediFind in the treatment of Hemochromatosis. Her top areas of expertise are Breast Cancer, Paget Disease of the Breast, Childhood Iron Deficiency Anemia, Iron Deficiency Anemia, and Bone Marrow Aspiration.

Dr. Kellogg has practiced with Ironwood Cancer & Research Centers as a partner since 1995. He is a graduate of Wayne State University School of Medicine and completed his residency and fellowship at Wayne State University Affiliated Hospitals. Prior to joining ICRC Dr. Kellogg was an Assistant Professor of Medicine at Wayne State University and the Detroit Medical Center working on the breast cancer service. While at the university, in addition to treating patients Dr. Kellogg was involved in conducting multiple clinical research studies. Dr. Kellogg was also Chief Medical Resident at Detroit Receiving Hospital. Dr Kellogg has been recognized by Phoenix Magazine as Top Doc. Dr. Kellogg is Board Certified in Internal Medicine with Specialty Board Certifications in Medical Oncology and Hematology and maintains an active practice concentrating on all types of adult cancers and blood disorders. Dr. Kellogg is rated as an Advanced provider by MediFind in the treatment of Hemochromatosis. His top areas of expertise are Breast Cancer, B-Cell Lymphoma, Paget Disease of the Breast, and Schnitzler Syndrome.

Dr. Ortiz Cruz joined Ironwood Cancer & Research Center in September 2014, after completing her hematology and medical oncology fellowship at the University of South Carolina in Charleston. She completed two years of research at the National Cancer Institute | National Institutes of Health in Bethesda Maryland where she was involved with clinical research in radiation oncology in addition to work with medical oncology. Dr. Ortiz Cruz also completed an internal medicineresidency training program at Banner Good Samaritan Medical Center in Phoenix. She has published several articles in scientific journals and presented at various meetings. Dr. Cruz's specializes in solid tumor and hematologic disorders with a special interest in breast, colon cancer and lymphoma. Dr. Cruz's goal is to deliver the best care available for her patients by providing personalized treatment planning in conjunction with cutting-edge therapy.Dr. Cruz's personal goal is to deliver the best care available for her patients with the understanding that personalized treatment planning in conjunction with utilizing cutting-edge therapy is the best means to achieve this goal. Dr. Cruz is rated as an Advanced provider by MediFind in the treatment of Hemochromatosis. Her top areas of expertise are Breast Cancer, Severe Congenital Neutropenia, Paget Disease of the Breast, and Agranulocytosis.

Dr. Kalmadi joined Ironwood Cancer and Research Centers in 2008 and serves as Chief Medical Officer.  After finishing his medical schooling in India, Dr. Sujith Kalmadi completed his residency training and fellowship at the Cleveland Clinic in Cleveland, Ohio. He then served as academic clinical faculty at the Cleveland Clinic School of Medicine (Lerner School) in Cleveland, Ohio and subsequently at Baylor College of Medicine in Houston, Texas. During his tenure at these prestigious institutions, he pioneered several novel clinical research trials which have been lauded at national scientific meetings and published in peer reviewed journals. His areas of clinical and research interests include several solid tumors and hematological disorders. He currently resides in Chandler with his wife and three children, and enjoys tennis, chess and racquetball during his spare time. He is board certified in Internal Medicine, Hematology and Medical Oncology. Dr. Kalmadi is rated as an Advanced provider by MediFind in the treatment of Hemochromatosis. His top areas of expertise are Lung Cancer, Familial Colorectal Cancer, Colorectal Cancer, and Severe Congenital Neutropenia.

Robin Obenchain is a Hematologist in Chandler, Arizona. Dr. Obenchain is rated as an Advanced provider by MediFind in the treatment of Hemochromatosis. Her top areas of expertise are Breast Cancer, Paget Disease of the Breast, Inflammatory Breast Cancer, and Angiosarcoma. Dr. Obenchain is currently accepting new patients.

Dr. Halbur joined Ironwood Cancer & Research Centers in 2005, following his residency in Internal Medicine and fellowship in Hematology and Oncology at the University of California at Irvine. He earned his medical degree at Loyola University of Chicago, Stritch School of Medicine. Dr. Halbur has been active in cancer research and has presented his results at the American Society of Hematology Annual Meeting. He has also been involved in clinical trial development. Dr. Halbur lives in the East Valley and enjoys spending time with his wife and two daughters. His hobbies include playing basketball, tennis, and golf and cheering on the Suns. He is board certified in Internal Medicine, Hematology and Medical Oncology.Supportive Cancer Care You Can Trust You can find that team at Ironwood Cancer & Research Centers. With community-based centers strategically located throughout the Metro Phoenix area, Ironwood offers advanced therapies and a multi-disciplinary approach usually associated with large academic centers – but with a personalized touch recognizing the individual needs of the patient.Studies have shown the importance of a multi-disciplinary approach in effectively treating cancer. We spare you time and worry simply by having all the doctors, therapists, and resources you need in one convenient location, eliminating the delays and miscommunication. These collaborative efforts ensure the highest standards of care. Because Ironwood is actively involved in cutting-edge research, you can also benefit from promising new treatments through participation in clinical trials. We evaluate you and develop a personalized treatment plan specifically for you to insure the best possible outcome. Dr. Halbur is rated as an Advanced provider by MediFind in the treatment of Hemochromatosis. His top areas of expertise are Familial Colorectal Cancer, Adult Soft Tissue Sarcoma, WT1-Related Wilms Tumor Syndromes, and Clear Cell Sarcoma.

Mazen Khattab is a Hematologist and an Oncologist in Phoenix, Arizona. Dr. Khattab is rated as an Advanced provider by MediFind in the treatment of Hemochromatosis. His top areas of expertise are Paget Disease of the Breast, Breast Cancer, Pleuropulmonary Blastoma, and Colorectal Cancer. Dr. Khattab is currently accepting new patients.

Ethan Kennedy is a primary care provider, practicing in Family Medicine in Phoenix, Arizona. Dr. Kennedy is rated as an Experienced provider by MediFind in the treatment of Hemochromatosis. His top areas of expertise are Obesity, Obesity in Children, High Cholesterol, and Type 2 Diabetes (T2D). Dr. Kennedy is currently accepting new patients.

Mohammed Jasser is a primary care provider, practicing in Internal Medicine in Phoenix,, Arizona. Dr. Jasser is rated as an Experienced provider by MediFind in the treatment of Hemochromatosis. His top areas of expertise are High Cholesterol, Infant Hyperglycemia, Vertigo, and Obesity.