Dr. DeRoock joined Ironwood Cancer & Research Centers in 2009 after completing residency in Internal Medicine followed by fellowship in Hematology and Oncology at the University of California at Davis. He is a first-generation Panamanian-American fluent in both English and Spanish. He previously earned his medical degree at the University of Arizona. Dr. DeRoock is board certified in Internal Medicine, Hematology and Medical Oncology. He 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.Supportive Cancer Care You Can TrustYou 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. Dr. Deroock is rated as a Distinguished provider by MediFind in the treatment of Iron Deficiency Anemia. His top areas of expertise are Pulmonary Embolism, Nodular Lymphocyte-Predominant Hodgkin Lymphoma (NLPHL), Childhood Iron Deficiency Anemia, and Iron Deficiency Anemia.

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 a Distinguished provider by MediFind in the treatment of Iron Deficiency Anemia. Her top areas of expertise are Breast Cancer, Paget Disease of the Breast, Childhood Iron Deficiency Anemia, Iron Deficiency Anemia, and Bone Marrow Aspiration.

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 Iron Deficiency Anemia. His top areas of expertise are Hemochromatosis, Non-Small Cell Lung Cancer (NSCLC), Plasmacytoma, and Lung Cancer.

Megan Jhaver is a primary care provider, practicing in Internal Medicine in Chandler, Arizona. Dr. Jhaver is rated as a Distinguished provider by MediFind in the treatment of Iron Deficiency Anemia. Her top areas of expertise are Childhood Iron Deficiency Anemia, Iron Deficiency Anemia, Hypertension, and Familial Hypertension. Dr. Jhaver is currently accepting new patients.

Dr. Mark Schlotterback, MD is a Family Doctor in Gilbert, AZ.Dr. Mark Schlotterback, a board certified family practitioner, has been practicing medicine for over a decade. Dr. Schlotterback earned his MD from University of Kansas Medical Center. After completion, he began his residency program at Good Samaritan Medical Center in Phoenix. Shortly after completing his residency, Dr. Schlotterback joined Gilbert Center for Family Medicine. Dr. Schlotterback comes from a long line of family of physicians beginning with his father who was a primary care physician in a small town in Kansas. Dr. Schlotterback has two children, Lexi and Luke who reside with him in Tempe. Dr. Schlotterback is an avid athlete who added the completion of the 2008 Iron Man Race to his list of accomplishments. Being the family doctor that he is, he finished this race while taking week-end call for the practice!. Dr. Schlotterback is rated as an Experienced provider by MediFind in the treatment of Iron Deficiency Anemia. His top areas of expertise are Osteomyelitis in Children, Type 2 Diabetes (T2D), High Cholesterol, and Glucocorticoid-Remediable Aldosteronism.

Dr. Sunildat Maheshwari, MD is a Family Doctor in Gilbert, AZ.Dr. Sunildat (Sunny) Maheshwari, a board certified family practitioner, joined the practice in October of 2010. Brought up in Southern California, and did his undergraduate education in Biology at University of California Riverside. Dr. Sunny earned his Medical Degree from St. Christopher College of Medicine, in England. After completion, he began his residency program at Greenville Hospital System, in Greenville, South Carolina. After completing his residency, Dr Sunny joined Gilbert Center for Family Medicine. He is a member of the American Medical Association and American Association of Family Practitioners. Dr Sunny is married and his personal interests are in tennis, snooker, information technology and international traveling. Dr. Maheshwari is rated as an Experienced provider by MediFind in the treatment of Iron Deficiency Anemia. His top areas of expertise are Hypertension, Familial Hypertension, Glucocorticoid-Remediable Aldosteronism, and High Cholesterol.

Art house movies, travel, cooking. Dr. Badari is rated as an Experienced provider by MediFind in the treatment of Iron Deficiency Anemia. His top areas of expertise are Thrombocytopenia, Multiple Myeloma, Non-Hodgkin Lymphoma, Bone Marrow Aspiration, and Bone Marrow Transplant.

I enjoy traveling, hiking, cooking and spending time with my family and friends. Dr. Sugumar is rated as an Experienced provider by MediFind in the treatment of Iron Deficiency Anemia. Her top areas of expertise are Childhood Iron Deficiency Anemia, Iron Deficiency Anemia, Anemia, and Acute Mountain Sickness.

I love spending my free time with my family. We love doing puzzles, playing outdoors, biking, hiking and playing ball. Dr. Liu is rated as an Experienced provider by MediFind in the treatment of Iron Deficiency Anemia. Her top areas of expertise are Paget Disease of the Breast, Breast Cancer, Inflammatory Breast Cancer, and Pleuropulmonary Blastoma.

I enjoy spending time with my family and in the outdoors. Dr. Miller is rated as an Experienced provider by MediFind in the treatment of Iron Deficiency Anemia. Her top areas of expertise are Non-Muscle Invasive Bladder Cancer, Muscle Invasive Bladder Cancer, Febrile Neutropenia, and Chronic Familial Neutropenia.

Margarita Kushnir is a Hematologist in Gilbert, Arizona. Dr. Kushnir is rated as an Experienced provider by MediFind in the treatment of Iron Deficiency Anemia. Her top areas of expertise are Venous Thromboembolism (VTE), Shwartzman Phenomenon, Thrombocytopenia, and Deep Vein Thrombosis. Dr. Kushnir is currently accepting new patients.

I enjoy reading, photography, traveling and spending time with my family. Dr. Birdi is rated as an Experienced provider by MediFind in the treatment of Iron Deficiency Anemia. Her top areas of expertise are Atelosteogenesis Type 1, Bardet-Biedl Syndrome, Mckusick-Kaufman Syndrome, and Hennekam Syndrome.

I enjoy yoga, meditation, cooking classes, boot camps, Barre class, and traveling. I am also a huge animal advocate and participate in fundraisers and volunteer events for animals and have four adopted fur babies of my own. Dr. Saeed is rated as an Experienced provider by MediFind in the treatment of Iron Deficiency Anemia. Her top areas of expertise are Paget Disease of the Breast, Breast Cancer, Inflammatory Breast Cancer, and Angiosarcoma.

Ronald Lee is a primary care provider, practicing in Family Medicine in Gilbert, Arizona. Dr. Lee is rated as an Experienced provider by MediFind in the treatment of Iron Deficiency Anemia. His top areas of expertise are Neuralgia, Peripheral Neuropathy, Nasal Flaring, and Infant Hyperglycemia. Dr. Lee is currently accepting new patients.

Luz Lopez is a primary care provider, practicing in Family Medicine in Mesa, Arizona. Dr. Lopez is rated as an Experienced provider by MediFind in the treatment of Iron Deficiency Anemia. Her top areas of expertise are Chorea-Acanthocytosis, Hypolipoproteinemia, Familial HDL Deficiency, and Apo A-I Deficiency.

Jigna Patel is a primary care provider, practicing in Internal Medicine in Gilbert, Arizona. Dr. Patel is rated as an Experienced provider by MediFind in the treatment of Iron Deficiency Anemia. Her top areas of expertise are Sitosterolemia, High Cholesterol, Familial Hypertension, and Hypertension. Dr. Patel is currently accepting new patients.

Dr. Sanjeev Gopal is a board certified specialist in Medical Oncology and Hematology.With offices in Apache Junction, Mesa and Gilbert, he is committed to providing highest level of care. Our center provides comprehensive care including Chemotherapy, immunotherapy, biologic therapy and iron infusions. Our goal is to provide individualized care to all Blood and Cancer patientsDo not dwell in past, do not dream of future, concentrate the mind on present moment. Dr. Gopal is rated as an Advanced provider by MediFind in the treatment of Iron Deficiency Anemia. His top areas of expertise are Colorectal Cancer, Familial Colorectal Cancer, Lung Adenocarcinoma, and EGFR Positive Lung Cancer.

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 Iron Deficiency Anemia. Her top areas of expertise are Breast Cancer, Severe Congenital Neutropenia, Paget Disease of the Breast, and Agranulocytosis.

Dr. Cherington joined Ironwood Cancer &  Research Centers in July 2016 after completing his fellowship in Hematology and Medical Oncology at the Mayo clinic.  An Arizona native, he earned undergraduate degrees in Biology and Spanish at Arizona State University prior to attending the University of Arizona for his medical doctorate.  Dr. Cherington has presented research at ASCO and ASH and authored several research articles. However, what he values most is receiving the Gold Humanism Award, which recognizes him as possessing the personal characteristics that colleagues themselves 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. Today, in each new patient, Dr. Cherington sees a friend or family member who deserves the utmost compassion and expertise that modern medicine has to offer.Outside of work, Dr. Cherington enjoys hiking, exploring Arizona, sports, and spending time with his three children, his dog, and his beautiful wife.  Together, they are passionate about continually moving toward adopting lifestyle factors to prevent or slow cancer.  Dr. Cherington promotes using healthful lifestyle changes in conjunction with the best cancer treatment modern medicine has to offer to continually work towards a cure. Dr. Cherington is rated as an Advanced provider by MediFind in the treatment of Iron Deficiency Anemia. His top areas of expertise are Oligodendroglioma, Astrocytoma, Gliosarcoma, and Ependymoma.

Robin Obenchain is a Hematologist in Chandler, Arizona. Dr. Obenchain is rated as an Advanced provider by MediFind in the treatment of Iron Deficiency Anemia. 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.