Peninsula Gastroenterology
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Our Doctors

John W. Boyd, M.D.John W. Boyd, M.D.
Dr. Boyd received his medical degree from East Carolina University in Greenville, N.C. and completed residency training at Eastern Virginia Medical School.  He completed fellowship training at the Medical College of Virginia School of Medicine and is board-certified in IM/Gastroenterology.

 

Frederick M. Gessner, M.D.Frederick M. Gessner, M.D.
Dr. Gessner received his medical degree from the University of Maryland and completed residency training at Johns Hopkins University in Baltimore, Maryland. He completed fellowship training at Duke University and is board-certified in IM/Gastroenterology.

 

Ray L. James, Jr., M.D.Ray L. James, Jr., M.D.
Dr. James received his medical degree from Johns Hopkins University and completed residency training at Strong Memorial Hospital in Rochester, NY.  He completed fellowship training at the University of North Carolina and is board-certified in IM/Gastroenterology.

 

Hackworth_WEBWilliam A. Hackworth, M.D. Dr. Hackworth received his medical degree from Virginia Commonwealth University School of Medicine where he also completed residency training in internal medicine.  Also at VCU, he completed fellowship training in gastroenterology, hepatology and nutrition. 

 

 

John R. Stephens, M.D.John R. Stephens, M.D.
Dr. Stephens received his medical degree from the University of Maryland and completed residency training at Downstate Medical School in Brooklyn and the University of Iowa.  He completed fellowship training at the University of Iowa and is board-certified in IM/Gastroenterology.

 

Mark A. Titus, M.D.Mark A. Titus, M.D.
Dr. Titus received his medical degree from New Jersey Medical School and completed residency training at Vanderbilt University. He completed fellowship training at the University of Maryland Hospital and is board-certified in IM/Gastroenterology.

 

Pamela G. Priest, Nurse PractitionerPamela G. Priest, Nurse Practitioner
Ms. Priest completed her Masters in Nursing/Family Nurse Practitioner from Old Dominion University. She is certified as a Family Nurse Practitioner by the American Academy of Nurse Practitioners.

 

 

Crystal N. Mann, Physician AssistantCrystal N. Mann, Physician Assistant
Ms. Mann completed the Masters of Physician Assistant Program at Eastern Virginia Medical School in Norfolk, Virginia.  She is nationally certified as a Physician Assistant.