Donna Holland, MD, FACP
Residency Program Director
Combined Internal Medicine/Pediatrics
Associate Program Director Pediatrics
Assistant Professor of Clinical Internal Medicine & Pediatrics

A native Texan, Dr. Holland received her medical degree from the University of Texas Health Sciences Center in Houston in 1992.  She came to Phoenix to complete residency training in the Combined Internal Medicine/Pediatrics Program at Good Samaritan Regional Medical Center, and has never made it back to Texas. She is board certified in both Internal Medicine and Pediatrics. She is an Assistant Professor of Clinical Medicine at the University Of Arizona College Of Medicine and directs the Combined Medicine/Pediatrics fourth year clinical rotation for medical students.  She is an Associate Program Director for the Pediatrics Residency Program affiliated with Phoenix Children’s Hospital and Maricopa Medical Center.  She is very involved in resident education, junior faculty development projects, and community outreach.

Randal Christensen, MD, MPH
Medical Director Crews’N Healthmobile
Medical Director Camp AZDA
Clinical Assistant Professor of Internal Medicine and Pediatrics

Dr Christensen was raised in Tucson, AZ where he earned a B.A. in Sociology from the University of Arizona.  From there he traveled to Boston, MA where entered the MD/MPH program at Tufts University School of Medicine.  Longing for the desert climate, he returned to Phoenix to complete his Medicine-Pediatric residency at the Good Samaritan/Phoenix Children’s Hospital Program. Upon graduation he took a position as faculty at the two hospitals.  Today Dr Christensen devotes much of his time to medical student and resident education within the program as well as directing the medical aspects of the Crews’N Healthmobile and Camp AZDA. These last two programs allow medical students and residents the chance to provide healthcare in very unique settings. The Crews’N Healthmobile offers comprehensive primary care to adolescents and children that are homeless or at high risk. Camp AZDA is a week long camp that offers children with diabetes the chance to experience summer camp with the necessary medical teams close at hand.  At home one can usually find Dr Christensen playing with his 3 year old twins and his new baby girl.

Darren Deering, DO
General Pediatrics Division
Phoenix Children’s Hospital

After receiving his Bachelors of Science degree from Truman State University in 1995, Dr. Deering attended the Kirksville College of Osteopathic Medicine in Kirksville, Missouri. Following graduation from K.C.O.M. in 1999, he left the Midwest in search of warmer weather.  Unsure of what he wanted to do, he decided to complete a Traditional Rotating Osteopathic Internship in Long Beach, California. He loved Internship so much, he decided to do another one! As a result, he moved to Phoenix to become part of the Internal Medicine and Pediatrics Program at Banner Good Samaritan Medical Center & Phoenix Children’s Hospital. During his last year of residency, he served as a Chief Resident in the combined Med/Peds program. Dr. Deering’s primary interest is in resident and medical student education. His love of teaching is reflected in a few of the awards he received during his time as an intern and resident.  He received the Academic Excellence award and the annual Gerald T. Wong, M.D. “I Care” Award while doing his internship in California. He was recently recognized by the University of Arizona Medical School student body for excellence in resident teaching and was given the Senior Resident of the Year award during graduation ceremonies. Upon completion of his residency, Darren accepted a position with the General Pediatrics Division at Phoenix Children’s Hospital. In addition to teaching, he enjoys working on the Crews’ N Healthmobile providing care for homeless youth in the greater Phoenix area. In his spare time he enjoys spending time with his family and friends and his two new dogs, Gus and Cooper.

Michelle Huddleston, MD
Adolescent Section Chief at Phoenix Children’s Hospital
Clinical Assistant Professor of Internal Medicine and Pediatrics

A native of North Carolina, Dr. Huddleston received her bachelor’s degree in Biology at East Carolina University in 1990 and remained at East Carolina to receive her Doctorate of Medicine in 1995. She then traveled to Phoenix, Arizona as a newlywed with her husband, Sam. Michelle completed residency training in the Combined Internal Medicine/Pediatrics Program at Good Samaritan Regional Medical Center and Phoenix Children’s Hospital in 1999. She joined the faculty at both Phoenix Children’s and Good Samaritan where she currently directs the Adolescent program. Along with Dr. Randy Christensen, she staffs the Crews‘n Health mobile, a mobile van that provides medical care for homeless adolescents. Her care for the homeless extends to a younger population at the Thomas J. Pappas Elementary School, a school based medical clinic for homeless youth. Her primary focus is adolescent healthcare and resident education. Outside of work she enjoys scrapbooking, rubberstamping, cooking and spending time with her family.

Cheryl W. O’Malley, MD
Associate Program Director of Internal Medicine, Banner Good Samaritan Medical Center
Director of Internal Medicine Clerkship for BGSMC, University of Arizona

Dr. O’Malley is a native of Phoenix and left only shortly to complete her bachelor’s degree in Biology at the University of Notre Dame in 1994. She returned to Arizona to receive her M.D. from the University of Arizona in 1999 and then entered the Combined Internal Medicine/Pediatrics Residency Program at Good Samaritan Regional Medical Center and Phoenix Children’s Hospital. During her residency, she served as Chief Resident in Pediatrics. In 2003, she joined the faculty at both Phoenix Children’s and Good Samaritan and currently is one of the Associate Program Directors in Internal Medicine.  She is the clerkship director for the third year medical students who rotate in Internal Medicine and she is actively involved with the U of A Phoenix campus. Most days, you will find her attending on the inpatient medicine wards and in both Internal Medicine and Pediatric clinics. She also sees children at the St. Vincent de Paul clinic. Her primary focus is inpatient adult medicine, resident education, the American College of Physicians, and faculty development programs. If you come to her house for journal club or a “craft night” you will see that she loves home improvement shows and spending time with her family.

Tressia Shaw, MD
General Pediatrics Division
Phoenix Children’s Hospital

Dr. Shaw completed an undergraduate degree at the University of Minnesota before relocating to warmer weather at University of Arizona College of Medicine, where she received her Doctorate of Medicine degree. In 2004, she completed her training in Internal Medicine/Pediatrics at Good Samaritan Regional Medical Center and Phoenix Children’s Hospital. During her fourth year of residency, she served as Med/Peds Chief Resident. She has recently joined the General Pediatrics Division at Phoenix Children’s Hospital. She has a focused interest in caring for children and adolescents with special health care needs and issues of transitioning this population to adult health care. During her residency, she developed an educational curriculum in this area for the pediatric residents. This curriculum was presented at the 2004 AAP National Medical Home and Children with Special Health Care Needs Conference. She is currently developing a specialized clinic at PCH for children with special health care needs. In her free time she enjoys running, hiking, and swimming.