Medical Oncologists

Devinder Singh, MD

Dr. Devinder Singh obtained his M.D. from the Government Medical College in Patiala (Punjab), India. He completed his internship and residency in Internal Medicine from Wayne State University in Detroit, Michigan. Shortly after, he completed his fellowship in Medical Oncology and Hematology from the City of Hope National Medical Center in Duarte, California in 1992. He is board certified in Internal Medicine, Oncology, and Hematology. In August of 1992, he founded the Arizona Center for Hematology/Oncology and has been servicing the greater Phoenix area since then with his other medical oncology associates. In 2008, in collaboration with Drs. Biggs, Lee, and Reed, the radiation oncology division was established and the practice name was changed to Arizona Center for Cancer Care. He also has been nominated as Best Doctor in Oncology by Phoenix Magazine. He is a clinical assistant professor at Midwestern Medical University (Glendale campus) and is actively involved in teaching medical students.

Dr. Singh has been married to his wonderful wife, Randeep, since 1982. They have three beautiful children, two daughters, Raman and Rimpi, and one son, Aman, all attending different universities. They also have two Yorkshire terriers, Rusty and Musty, and a playful cat, Millie. In his free time, Dr. Singh enjoys playing golf.

Joan Dahmer, MD

Dr. Dahmer was born and educated in Canada. She obtained her MD from the University of Western Ontario in London, Canada, then went on to McGill University for Internship. She completed a Residency in Internal Medicine at Dalhousie University, and was Chief Resident there in 1986-87. She went on to Hem-Onc at Dal and was president of PARI-MP ‘87-’88., then went on to a Fellowship at McMaster University in Hamilton, Ontario. Her clinical experience includes 3 years in private practice in Sudbury, Ontario, where she worked with the OCTRF (Sudbury’s Regional Cancer Center), which pioneered an out-patient stem cell transplant program. She has been Chief of Medicine at Laurentian Hospital, Director of the Hemophilia Clinic, Director of the HIV HAVEN Program in Sudbury and the surrounding region of Northern Ontario. From Sudbury she moved to California, where she practiced for 9 years, initially in private practice, then Hematologist of Kaiser’s HIV team in Santa Rosa California, a program which won national attention and many awards. She moved to Arizona in 2001 and joined the practice in 2002. She lectures at Midwestern Medical School where she is a Clinical Assistant Professor, and frequently teaches students in the office. She speaks French and Spanish, and enjoys travelling, reading, swimming and learning new languages.

Parmjeet Banghar, MD

Dr. Banghar earned a medical degree from Seth G.S. Medical College and King Edward Memorial Hospital, University of Bombay, India. He then completed a residency in internal medicine from University of Bombay. He moved to the United Kingdom where he trained in hematology. He relocated to the United States and completed his internal medicine residency at Henry Ford Hospital, Detroit, MI in 1998. He practiced as a hospitalist for 3 years and subsequently completed fellowship training in medical oncology and hematology from Henry Ford Hospital.

He served as a chief fellow in his final year. He moved to Arizona in 2004 and joined the practice in 2006. He is board certified in medical oncology.

James Choi, MD

Dr. Choi attended Case Western Reserve University with a Bachelors degree in Biochemistry. He then attended Wright State University where he received his medical doctorate degree. He completed his fellowship in medical oncology and hematology at the University of Arizona. During his fellowship, he served as chief fellow, published several research articles, and presented his research at American Society of Hematology national meeting. His clinical interests include breast, lung, gastrointestinal, and head/neck cancer. He is board certified by the American Board of Internal Medicine and board certified in Medical Oncology.

Clarence S. Adoo, MD, FACP

Clarence S. Adoo, MD, FACP, a graduate of the University of Ghana Medical School, completed his internal medicine residency at the St. Agnes Hospital of Baltimore. He subsequently completed fellowship training in hematology and oncology at the University of Maryland, and then stayed on faculty there for 5 years. He initially moved to Arizona in 2002, and joined the Arizona Center for Cancer care in 2008. He has authored or co-authored a number of journal articles and book chapters, and currently serves on the editorial boards of eMedicine and the American Association of Blood Banks Press.

Anjali Iyengar, MD

Dr. Anjali Iyengar is a passionate medical professional who strives to provide a high quality of care to her patients. Dr. Iyengar earned her medical degree from Dr. D.Y. Patil Medical College, Kolhapur , India . She was National Merit Scholar and graduated at the top of her class. She completed her Internal Medicine Residency at University of Texas Medical Branch in Galveston and was a 2 time National "Medical Jeopardy Game Show" winner. She subsequently completed her fellowship in Hematology/Oncology at UT Southwestern Medical Center, Dallas and also served as the Chief Fellow. She had a successful stint as Asst. Professor of Hematology/Oncology at UT Southwestern Medical Center and Dallas VA Medical Center where she was active in clinical research and teaching.

Dr. Iyengar joined AZCCCC in 2009. Her special interests include breast cancer and colon cancer. She believes in providing comprehensive, personalized care to her patients. She has been featured on ABC 15 news. She is board certified in Internal Medicine, Hematology and Oncology.

Dr. Iyengar enjoys movies, tennis, travel and social networking. She resides in Glendale , AZ with her husband and their beautiful little daughter.

Dr. Justin GoldfarbJustin Goldfarb, DO

Dr. Justin Goldfarb grew up in the suburbs of Detroit and received his bachelor’s degree from the University of Colorado at Boulder. He began his career by earning a medical degree from Midwestern University in Chicago.

Dr. Goldfarb then completed his categorical internal medicine training at Rush University Medical Center in Chicago. Following his residency, he received an academic appointment from the University of Chicago - Pritzker School of Medicine as a clinical instructor in internal medicine.

Pursuing his true passion, he completed a medical oncology fellowship at Baylor University Medical Center in Dallas. During his training, Dr. Goldfarb authored publications in the fields of lymphoma and breast cancer.

Recently, Dr. Goldfarb was appointed as a clinical assistant professor at Midwestern University in Glendale where he enjoys teaching medical students.

Dr. Goldfarb is fellowship-trained in hematologic disorders and malignancies as well as common cancers. He is double board certified in Medical Oncology and Internal Medicine.

Dr. Giraldo KatoGiraldo Kato, MD

Board-certified in medical oncology, Dr. Kato has a special interest in breast cancer. He completed his residency in internal medicine at East Carolina University School of Medicine where he served as chief resident. He then completed a fellowship in both hematology and medical oncology at the Comprehensive Cancer Center of Wake Forest University in North Carolina. Using his skills to provide the highest quality care to afflicted patients, Dr. Kato coordinates the interdisciplinary breast cancer practice at Pinnacle Oncology Hematology. Dr. Kato’s research interests include new therapies for breast cancer, as well as for gastrointestinal and thoracic malignancies.

Dr. Michael GordonMichael Gordon, MD

A board-certified specialist in Medical Oncology at Pinnacle Oncology Hematology, Dr. Gordon oversees a research-based community oncology practice. His clinical focus is the management of advanced cancers including; kidney, melanoma, ovarian and lung cancers. Dr. Gordon also works on the development of new cancer therapies that affect angiogenesis (a tumor’s blood vessel supply), in addition to the development of new therapeutic strategies for patients through the use of novel, molecularly targeted medications. As a medical oncologist, the doctor uses clinical trials aimed at improving clinical outcomes as a way of providing patients with the cutting edge of innovative cancer care. Recently integrated into the AZCCC (Arizona Center for Cancer Care), Dr. Gordon values the opportunity to provide greater accessibility to new treatments for patients throughout the Phoenix area.

Dr. David MendelsonDavid Mendelson, MD

Dr. Mendelson is board-certified in medical oncology and hematology and has provided medical oncology services and compassionate care to the greater Phoenix area for more than 30 years. His clinical interests include the management of patients with hematologic disorders, prostate cancer, lung cancer and sarcomas; with a particular interest in drug development. Dr. Mendelson helped to create the drug development program at the Arizona Cancer Center, located in the greater Phoenix area, before joining Pinnacle Oncology Hematology in 2005. He has served as committee adviser for the American Society of Clinical Oncology in relation to the development of clinical care guidelines regarding prostate cancer and thrombotic complications in cancer patients. Dr. Mendelson has been a consultant to both the pharmaceutical industry’s drug development program and the National Cancer Institute’s drug assessment program.

Dr. Andrew BureshAndrew Buresh, MD

Andrew Buresh was born and raised in Omaha, Nebraska. He attended the University of Arizona for his undergraduate degree, where he received a double B.S. in biochemistry and Latin and was named Outstanding Graduating Senior in the College of Humanities. Dr. Buresh is a member of Phi Beta Kappa.

Following graduation from the U of A, Dr. Buresh attended the University of Nebraska College of Medicine on scholarship, graduating with distinction. He completed his residency at the University of Arizona and his fellowship at the Arizona Cancer Center in Tucson. In the last year of his fellowship, he served as Chief Fellow, participating in research in the field of myelodysplasia. During his career, Dr. Buresh has written several articles on the subject, co-authored two book chapters, and has been published in the New England Journal of Medicine. In addition to his notoriety within the medical field, Dr. Buresh recently received the Phoenix Business Journal’s 40 Under 40 Award, which recognizes the area’s leading businesspeople under the age of 40.

Dr. Buresh is board certified in Medical Oncology, Hematology, and Internal Medicine. He is interested in all aspects of clinical oncology and hematology, with a particular interest in gastrointestinal, breast, lung, and prostate cancer, as well as myelodysplasia, coagulation disorders, lymphoma, and myeloma. With the establishment of Desert Springs Cancer Care, Dr. Buresh envisioned a warm and welcoming environment in which patients felt like a member of the family. He and his wife are blessed to be the proud parents of three beautiful children. When not caring for patients, Dr. Buresh enjoys spending his time with family, exercising, reading, playing basketball, golf, guitar, and coaching youth sports. He speaks basic medical Spanish.

Dr. Brendan CurleyBrendan Curley, DO

Dr. Brendan Curley completed his Hematology/Oncology fellowship in 2014 at West Virginia University, and was selected to be the Chief Fellow his final year. His residency training in Internal Medicine was served at Drexel University in Philadelphia, PA. He is board certified in Internal Medicine and board eligible in Hematology & Oncology. He has presented at multiple national meetings, including the annual meetings of both the American Society of Clinical Oncology (ASCO) and American Society of Hematology (ASH), amongst others. He was selected as an ASCO Conquer Cancer Merit Award Recipient for his research in 2012 and 2013. During fellowship, he was selected as fellow of the year in 2012 & 2013, and was awarded first place at the annual Graduate Medical Education research conference in 2013. In 2014, he was selected as the Robert H. Waldman Academic Excellence Award & the Margaret J. Albrink Research Award Recipient, given annually to a resident or fellow training in the Department of Medicine. Dr. Curley also was a team leader for the ASCO Quality Training Program, which was one of only fifteen practices in the country invited to participate at ASCO Headquarters in Alexandria, VA.

Dr. Curley has authored multiple medline indexed articles and book chapters, including a chapter in the Bethesda Handbook of Clinical Oncology. He has been recognized for his volunteer work with his English Bulldog, Princess Danger, who is a therapy dog that provides emotional support for patients of all ages. Dr. Curley has a wife Anjaly, who is a radiologist who specializes in Oncologic Imaging. They have two wonderful daughters, Priya (2 years) and Asha (2 months). In his free time, he likes to play golf, read, enjoy the Arizona weather, and catch a Red Sox game.

Dr. Frank TsaiFrank Tsai, MD

Frank Tsai, MD, a medical oncologist and hematologist, earned his Bachelor of Science Degree from the Sophie Davis School for Biomedical Education at the City College of New York and received his Medical Doctorate from the State University of New York (SUNY) at Stony Brook School of Medicine. Upon completion of an internship and residency in internal medicine at the SUNY Stony Brook School of Medicine, Dr. Tsai received oncology and hematology fellowship training at Boston University School of Medicine. Prior to moving to Arizona in 2013, Dr. Tsai was involved in institutional guideline committees, clinical trials, and international consultations while serving as an attending physician at the Memorial Sloan-Kettering Cancer Center in New York.

Nominated by patients for The Arnold P. Gold Foundation Award, an honor bestowed on physicians for their integrity and compassionate care, Dr. Frank Tsai believes that excellent patient care is a critical component of good medicine.

In his spare time, Dr. Tsai enjoys photography and hiking with his family.

Patrick J. Donovan, MD, FACPPatrick J. Donovan, MD, FACP

Dr. Donovan is a graduate of the University of Nebraska Medical Center in 1977. He completed his Residency in Internal Medicine there in 1980 and was on the faculty of UNMC for one year. He then completed a fellowship in Medical Oncology and Malignant Hematology at the University of California, San Francisco in 1983. He joined Dr. Paul Wassermann in practice at Scottsdale Healthcare Osborn and Scottsdale Healthcare Shea in July, 1983. He has served as President of the Medical Staff from 1996 to 1998, and Chairman of the Cancer Committee at Scottsdale Healthcare Osborn for over 20 years. He has also been President of the Arizona Clinical Oncology Society (TACOS) four times, and on the Clinical Practice Committees for the American Society of Clinical Oncology (ASCO) for 20 years. His special interests are Breast Cancer, Lymphoma and Melanoma.

Paul Wassermann, MDPaul Wassermann, MD

Paul Wassermann received his Bachelor of Science degree from Utah State University in his home town of Logan, Utah. He left Utah to enroll in Cornell Medical College in New York City, receiving his Doctorate of Medicine in 1969. The next five years were spent in Philadelphia receiving his training in internal medicine and hematology/oncology at the Presbyterian University of Pennsylvania Medical Center. Dr. Wassermann was invited to join two other Scottsdale, Arizona, physicians forming Scottsdale Medical Specialists, resulting in the first hematologist/oncologist to establish a practice in Scottsdale.

Dr. Wassermann is an avid golfer, photographer, classical music enthusiast, and has served as national president of the Train Collectors Association, an organization of antique toy train collectors.

Wishwdeep (Wish) Dhillon, MDWishwdeep (Wish) Dhillon, MD

Dr. Dhillon is fellowship trained in Hematology and Medical Oncology. He received his medical school degree from Dayanand Medical College, Ludhiana, India. He completed internship and residency training in Internal Medicine at Mount Sinai School of Medicine, St. Joseph’s Regional Medical Center program in Paterson, NJ. After finishing residency, he worked as Clinical Instructor in Medicine at Thomas Jefferson University in Philadelphia. Subsequently, he received Hematology & Oncology fellowship training at Drexel University College of medicine, Philadelphia. During the final year of his training, Dr. Dhillon served as Chief Fellow, and instructor for Drexel University medical students. Dr. Dhillon is board-certified in Internal Medicine, and board-eligible in Medical Oncology and Hematology.

Dr. Dhillon’s clinical interest includes all aspects of medical oncology, and hematology. His special interests include myeloma, lymphoma and leukemia, breast cancer, gastrointestinal malignancies, genitourinary malignancies like prostate cancer, and lung cancer. Dr. Dhillon also specializes in treatment of disorders of blood cells, bleeding and coagulation disorders.

Dr. Dhillon has participated in a number of research projects. He has presented his work at national meetings, and published in journals, including the New England Journal of Medicine. Dr. Dhillon is an advocate of collaborative and patient-centered cancer care that delivers effective treatment while maintaining quality of life.

Dr. Dhillon lives in Gilbert, AZ with his wife and daughter. He enjoys spending time with family, exercising, traveling, writing, and watching sports.




Gynecologic Oncology
Scottsdale: Virginia G. Piper Cancer Center
Hematology & Medical Oncology
Scottsdale: 3 Locations
Fountain Hills
Radiation Oncology
Scottsdale: 2 Locations
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