TACOS Board of Directors


Mahesh Seetharam, MD, FACP, MBBS
Mayo Clinic

Mahesh Seetharam, MD, FACP, MBBS, is a hematology and oncology specialist in Phoenix, who has been practicing for 11 years. Dr. Seetharam graduated from Mysore University, Mysore Medical College in 1998.

Vice President

Tomislav Dragovich, MD, PhD
Hematology Specialist
Banner MD Anderson Cancer Center

Tomislav Dragovich, MD, PhD, is a hematology specialist in Gilbert, Arizona, who has been practicing for more than 18 years. Dr. Dragovich graduated from the University of Belgrade in 1988.


Chad C. Cherington, MD
Medical Oncologist and Hematologist
Ironwood Cancer & Research Centers

Chad Cherington, MD, joined Ironwood Cancer & Research Centers in July 2016 after completing his fellowship in hematology and medical oncology at the Mayo Clinic. Dr. Cherington has presented research at the American Society of Clinical Oncology and American Society of Hematology, and authored several research articles. He is a recipient of the Gold Humanism Award, for his personal characteristics that colleagues would look for in a physician for themselves or their family members. 

Early in his youth, Dr. Cherington developed a passion to fight cancer when a childhood friend was diagnosed with a rare brain tumor. His friend’s cancer was aggressive, and her life was ultimately lost, but her tumor cells were donated to research new therapies. Years later, Dr. Cherington spent time at Barrow Neurological Institute investigating cell lines that most likely included his friend’s saved cells. The fire that was ignited as a child was further fueled when Dr. Cherington’s step-sister lost her life to cancer as a young adult.

Immediate Past President

Patrick J. Donovan, MD, FACP
Medical Oncologist/Hematologist
Scottsdale Cancer Center

Patrick J. Donovan, MD, FACP, specializes in medical oncology, hematology, and internal medicine. He joined Arizona Center for Cancer Care in 2013, when his team at Scottsdale Cancer Center partnered with the practice.

Dr. Donovan is certified by the American Board of Medical Oncology and American Board of Internal Medicine. He is a member of the American Medical Association, American College of Physicians, American Society of Internal Medicine, and American Society of Clinical Oncology. He has special interests in breast cancer, lymphomas, and melanoma.


Rajesh Bagai, MD
Medical Oncologist/Hematologist
Ironwood Cancer & Research Centers

Rajesh Bagai, MD, joined Ironwood Cancer & Research Centers in August 2013. He earned his medical degree at the age of 23 from Northeast Ohio Medical University, having completed the six-year honors program in medicine. He completed residency and fellowship training at University Hospitals of Case Western Reserve University in Cleveland. 

During his time at these institutions, he participated in clinical research trials to develop novel treatment strategies and has presented his findings at the American Society of Clinical Oncology Annual Meeting.

Dr. Bagai is a member of the American Society of Clinical Oncology, American Society of Hematology, and the American Medical Association. He specializes in several solid tumors and hematologic disorders. He is board certified in internal medicine, medical oncology, and hematology. In 2018, Dr. Bagai was recognized as one of Phoenix Magazine’s Top Doctors.

Mitesh Borad, MD
Mayo Clinic Arizona

Mitesh Borad, MD, graduated from the UMDNJ New Jersey Medical School at Newark in 2000. He specializes in hematology/oncology and is affiliated with Mayo Clinic Hospital.

Manpreet K. Chadha, MD
Medical Oncologist
Palo Verde Cancer Specialists

Manpreet K. Chadha, MD, completed medical school in Delhi, India, and has been honored with multiple gold medals for her academic excellence. She completed her residency in internal medicine in Buffalo, New York, and medical oncology fellowship at Roswell Park Cancer Institute, where she worked as an attending physician.

Dr. Chadha has actively participated in phase II and III clinical trials for patients with advanced malignancies, and has worked as an assistant investigator at TGen Clinical Research Services at Virginia G. Piper Cancer Center in Scottsdale. During her time at TGen, she served as the principal and co investigator in various phase I, II, and III studies involving new therapeutics for patients with advanced cancer.

Ian DeRoock, MD
Medical Oncologist/Hematologist
Ironwood Cancer & Research Center

Ian DeRoock, MD, joined Ironwood Cancer & Research Centers in 2009 after completing a residency in internal medicine followed by a fellowship in hematology and oncology at the University of California at Davis. He previously earned his medical degree at the University of Arizona, and is board certified in internal medicine, hematology, and medical oncology.

Dr. DeRoock has been active in developing clinical trials for pancreatic cancer and lymphoma and has presented his research findings at the American Society of Hematology Annual Meeting as well as the Annual Pan-Pacific Lymphoma Conference. He specializes in all adult cancers and hematologic disorders.

Sharad Khurana, MD, MSc
Assistant Professor of Medicine
University of Arizona Cancer Center

Sharad Khurana, MD, MSc, is an assistant professor of medicine at the University of Arizona College of Medicine. After obtaining his medical degree from the Grant Government Medical College in Mumbai, he trained in internal medicine from the John H. Stroger Jr. Hospital of Cook County in Chicago, where he simultaneously graduated from the Rush University completing a masters in clinical research. He is board certified in internal medicine and completed his hematology-oncology fellowship from the Mayo Clinic, Jacksonville campus in Florida. He is a faculty member at the University of Arizona Cancer Center, practicing as a hematologist with focus in management of Acute Leukemias and Bone Marrow transplant/Cellular therapies. Dr. Khurana is oncology and hematology board certified.

Jody Pelusi, PhD, FNP, AOCNP
Oncology Nurse Practitioner
HonorHealth Research Institute

Jody Pelusi, PhD, FNP, AOCNP, is an oncology nurse practitioner at Honor Health Research Institute in Scottsdale, Arizona, where she cares for oncology patients undergoing phase 1 clinical trials and standard of care therapies. 

Dr. Pelusi is recognized as an Advanced Oncology Certified Nurse Practitioner by the National Oncology Nursing Society.  She has 47+ years of experience in oncology care in a multitude of settings. Her research focuses on long-term cancer survivorship issues, educational needs of cancer caregivers, cancer genetics, and implementation of oral chemotherapy medication programs into private practice.

Dr. Pelusi has had a 4-year appointment to the FDA’s Oncological Drug Advisory Committee where she was the first nurse and first non physician to serve on this Committee. She also served on the FDA‘s ODAC Pediatric and Quality of Life subcommittees. She has previously served on the National Oncology Nursing Society’s Board of Directors and is currently on the Governing Board of the Intercultural Cancer Council. 

Chenthilmurugan Rathnasabapathy, MD
Medical Oncologist
University of Arizona Cancer Center
Parminder Singh, MD
Hematologist, Oncologist, Internist
Mayo Clinic Arizona

Parminder Singh, MD, is a medical oncologist/hematologist specializing in melanoma, bladder, kidney, prostate, and testicular cancer. He is recipient of numerous awards for his research, including the Young Investigator Workshop Award from SWOG and third place in a poster competition from the Medical Society of the State of New York.

Raju Vaddepally, MD
Yuma Regional Medical Center Cancer Center
Yuma, AZ

Dr. Vaddepally received his medical degree at Osmania Medical College, affiliated with N.T.R. University of Health Sciences in Hyderabad, India. He completed his residency in internal medicine from St. Joseph Mercy Hospital in Ann Arbor, Michigan. During his residency he developed an immense interest in taking care of cancer patients which motivated him to pursue additional training in oncology and hematology. Dr. Vaddepally completed a fellowship in hematology and oncology at Josephine Ford Cancer Institute at Henry Ford Hospital, which is affiliated with Wayne State University in Detroit, MI. Dr. Vaddepally is a member of the American Society of Hematology and American Society of Clinical Oncology. He is also a member of the American College of Physicians. 

Ruth Walker-Simelton, MBA
Site Manager
Alliance Cancer Care Arizona
Albert G. Wendt, MD
Medical Oncologist
Dignity Health

Albert Guy Wendt, MD, is a medical oncologist in the University of Arizona Cancer Center at St. Joseph’s Hospital and Medical Center. Dr. Wendt is board certified in both internal medicine and medical oncology. His expertise includes breast cancer risk assessment, diagnosis, and treatment. He is a member of the American College of Physicians, American Medical Association, and the American Society of Clinical Oncology. He was also the  President of the Arizona Clinical Oncology Society from 2003-2007.

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