Portneuf Medical Center - Pocatello, Idaho

Portneuf Cancer Center

Physician Team

Portneuf Cancer Center's physicians are certified by the American Board of Radiology in Radiation Oncology or the American Board of Internal Medicine in Medical Oncology, Hematology and Internal Medicine, and are leaders in their field.

Our physician team includes two medical oncologists and two radiation oncologists. They combine their individual skills to offer an evidence-based approach for advancing the knowledge and treatment of cancer.

We invite you to meet our physicians. They direct and lead patient care as well as collaborate with surgeons, licensed oncology nurses, and other team members to ensure the highest quality care and treatment for your cancer.

Michael Callaghan, M.D.
Radiation Oncologist

Dr. Michael Callaghan, a native of Butte, Montana, was raised in and around the Intermountain West. As an undergraduate he attended Westminster College in Salt Lake City, majoring in biology. While at Westminster, he played on the varsity soccer team. He graduated from the University of Utah Medical School, which was followed by a residency in radiation oncology at the Indiana University Medical Center in Indianapolis. Dr. Callaghan established his practice in Pocatello in 1997. He is board-certified in radiation oncology and is president of Intermountain Radiation Oncology. He is married to Dr. Cheryl Callaghan, a Pocatello gynecologist. The Callaghan’s have two children. He is a dedicated family man that enjoys outdoor recreations, including fishing and hiking, as well as being involved in the activities of his children. Dr. Callaghan is the past Chief of Medical Staff of Portneuf Medical Center where he worked successfully with his colleagues to redesign the quality and credentialing processes. Dr. Callaghan is an advocate of a collaborative approach to the practice of medicine; one that embraces the participation of physicians, support staff, and facilities in optimizing the care of the patient.

Steven Todd, M.D.
Radiation Oncologist

Dr. Steven Todd is a radiation oncologist who has joined Intermountain Radiation Oncology and is practicing with Drs. Michael Callaghan and Calvin McAlister. He received his medical degree from the University of Utah School Of Medicine and did his family practice internship at the University of North Dakota Family Practice Center. Dr. Todd completed radiation oncology training at Loma Linda University in Loma Linda, California. He and his family moved to Southeast Idaho from Helena, Montana where he worked at the St. Peter’s Hospital Cancer Treatment Center. Dr. Todd sees patients at both the Portneuf Cancer Center in Pocatello and the Cancer Center in Idaho Falls. Dr. Todd has a rather unique hobby in that he is an amateur rocketeer. He can often be found, weather permitting, blasting rockets into the heavens near the Dillon, Montana area.

Michael Francisco, M.D.
Medical Oncologist and Hematologist

Dr. Michael Francisco, a native of the East Coast, predominately the New York region, came to Pocatello in the early 90’s when he joined the Pocatello Clinic of Internal Medicine. He established a full-time practice with the Portneuf Cancer Center in January 2005. Dr. Francisco completed undergraduate studies at State University of New York at Potsdam, NY, majoring in biology. He attended medical school at the University of Liege in Belgium. This was followed by an internal medicine residency at Bridgeport Hospital in Bridgeport, Connecticut. Dr. Francisco was a fellow in hematology and oncology at the University of Massachusetts Medical Center, Worcester, Mass. prior to his moving to Pocatello. Dr. Francisco is board-certified in internal medicine, hematology, and oncology. From 1995-1996 he served as the Chief of Medicine for Bannock Regional Medical Center. He was the Medical Director of the Portneuf Cancer Center in 2007. Dr. Francisco, his wife, and two children are an avid outdoor family that enjoys tennis, skiing, and gardening. One of Dr. Francisco’s real passions in life are his dogs. He raises St. Bernards in addition to owning a loving pet Dachshund.

Scott Pierson, M.D.
Medical Oncologist and Hematologist

Dr. A. Scott Pierson is a board-certified medical oncologist and hematologist. He attended Princeton University as an undergraduate where he majored in political science. Dr. Pierson was a member of the Princeton varsity soccer team. He then attended Jefferson Medical College in Philadelphia and graduated magna cum laude. A native of the East Coast, following medical school he moved west completing his internal medicine residency and fellowships at the University of Colorado. Dr. Pierson and his family have resided in Pocatello since August of 2004. He loves the small town, college atmosphere of Pocatello where he can practice high quality medicine. With a love for the great outdoors, he is an avid downhill and cross-country skier during the winter and enjoys fly-fishing, mountain biking, and playing golf in the summer. He also coaches his children’s soccer teams in the fall and spring.