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Program Faculty

Richard T. Martin, M.D.
Director of the Geriatric Fellowship Program

Dr. Martin joined the Sacred Heart Hospital faculty in 2000 after many years of private practice and teaching in Canada, North Dakota, and Minnesota. Just prior to becoming a faculty member at Sacred Heart Hospital, he taught at Michigan State University’s Family Medicine Residency Program in Kalamazoo, where he was also the Director of Geriatrics.

In 1978, Dr. Martin earned his medical degree from the University of Manitoba, Canada, and in 1980, he completed his residency at the University of Manitoba, serving as Chief Resident. He has received a Certificate of Added Qualification in Geriatrics in 1992. Dr. Martin was the Director of Sacred Heart Hospital’s Geriatric Medicine Residency Program from its inception until he became the Director of Sacred Heart’s Family Medicine Residency Program.

He has received the family medicine residents’ “Teacher of the Year” award three times at Sacred Heart Hospital and three times at Michigan State University. His clinical interests include urinary incontinence, osteoporosis, and nursing home care.

Daniel M. Coller, M.D.
Director of the Family Medicine Residency Program

Dr. Coller joined the Sacred Heart Hospital faculty in 2004 after 30 years as a faculty member and director of geriatric education for the Harrisburg Family Medicine Residency Program. While at that location, he was honored as “Teacher of the Year” several times.

Dr. Coller has served as the Chairman of the Credentials and Bylaws Committees at the Pinnacle Health System in Harrisburg, as well as Chairman of the Family Medicine Department and a Board of Director of several hospitals.

After completing his undergraduate studies at Pennsylvania State University in State College, Dr. Coller received his medical degree from Temple University School of Medicine and later completed a family medicine residency program at Harrisburg Hospital. In 1999, Dr. Coller received his Certificate of Added Qualification in Geriatrics; he was recertified in 2008.

Dr. Coller also serves as the Medical Director of Sacred Heart Hospital’s Hospice Program. Throughout his career, he has been a Clinical Assistant Professor of Medicine at several medical schools, including Hershey and Drexel Medical Schools and most recently the Philadelphia School of Osteopathic Medicine. His clinical interests include the broad spectrum of geriatrics, end-of-life care, evidence-based medicine, and inpatient care.

Edward K. Wikoff, M.D.
Faculty Associate of the Geriatric Medicine Residency Program

Since 1999, Dr. Wikoff has served as the Clinical Director of MossRehab at Sacred Heart Hospital. He also served as a clinical instructor for the Department of Physical Medicine and Rehabilitation at Temple University School of Medicine in 1985. While at Temple University, he received the National Heart, Lung, and Blood Institute Award for his short-term research traineeship.

Dr. Wikoff is a Diplomat of the American Board of Physical Medicine and Rehabilitation. He is an amputee rehabilitation specialist and is active in the Regional Amputee Center. His areas of clinical and research interests include gait biomechanics and the effects of prosthetic/orthotic devices on gait biomechanics.

Michael Hortner, M.D.
Faculty Associate of the Geriatric Medicine Residency Program
Faculty Associate of the Family Medicine Residency Program

Dr. Hortner received a B.S. in biology from the University of Pittsburgh and his medical degree from the University of Antwerpen, School of Medicine Antwerpen, Belgium.  He completed his family medicine residency at the University of Connecticut.  After working in private practice as a family physician for a number of years, he joined the Comprehensive Wound Care Center at Sacred Heart Hospital in 2006 and became its Medical Director in 2009.  He is a Certified Wound Specialist of the American Academy of Wound Management and Certified Hyperbaric Technologist of the National Board of Diving and Hyperbaric Medical Technology.

Darren Aboyoun, PhD
Behavioral Science Coordinator

Dr. Aboyoun earned his doctoral degree and Master of Arts in clinical psychology from Georgia State University, Atlanta, GA.  After completing an internship at the University of Medicine and Dentistry of New Jersey, he completed post-doctoral training at a crisis residential facility in Allentown, PA.  Licensed in the states of New Jersey and Pennsylvania, Dr. Aboyoun practices in Easton, PA.  He had the good fortune of receiving training in Dialectical-Behavioral Therapy that he incorporates in his work with individuals with a variety of emotional difficulties.  Additionally, he has seven years of teaching at the undergraduate level and two years of teaching medical residents in family practice.

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