Our Team at NHOH

Physicians

Charles H. Catcher, MD
Having joined NHOH in 1992, Dr. Catcher began his medical studies at the University of Minnesota and then completed his internship and residency at Maine Medical Center in Portland. He served a fellowship in oncology and hematology for three years at the University of Vermont in Burlington.

Danny M. Sims, MD
A graduate of Emory University’s medical school, Dr. Sims completed his internship and residency at the Medical College of Virginia in Richmond. He completed a three-year fellowship in the division of hematology and oncology at the same college, where he spent another year as an attending physician in oncology and hematology and then joined our practice in 1992.

Frederick M. Briccetti, MD
Dr. Briccetti joined NHOH in 1994 after having completed his medical studies at the University of Cincinnati College of Medicine and his internship and residency at The New York Hospital. He completed a three-year fellowship in hematology and oncology at The New York Hospital Cornell Medical Center, and was assistant attending physician at The New York Hospital and instructor in medicine at Cornell.

Douglas J. Weckstein, MD
Having attended medical school at the Medical College of Virginia, Dr. Weckstein completed his internship, residency, clinical fellowship and research fellowship in hematology and oncology at New England Medical Center Hospital in Boston. He served as chief medical resident in the Internal Medicine Residency program, and then was in private practice in Middletown, New York. He then joined NHOH in 1998.

Peter H. Crow, MD
Dr. Crow joined NHOH in 2000 upon completion of a three-year fellowship in hematology and oncology at the University of Virginia Health Science Center. He attended Columbia University College of Physicians and Surgeons and completed his internship and residency at the University of Virginia Health Science Center.

Gina M. DiVenuti, MD
Dr. DiVenuti began practicing at NHOH in 2003 following a three-year clinical fellowship at New England Medical Center in hematology and oncology. She completed her medical and undergraduate degrees with honors at Brown University, and then completed a three-year medical house training program in internal medicine at New England Medical Center.

Meredith J. Selleck, MD
Dr. Selleck completed her post-doctoral training at Columbia Presbyterian Medical Center as a clinical fellow in hematology and oncology, before joining NHOH in 2003. She earned her medical degree at New York Medical College, and completed her internship and residency at Columbia Presbyterian Medical Center.

Jeanna H. Walsh, MD
Dr. Walsh is a graduate of the State University of New York at the Upstate Medical University in Syracuse, New York. She completed both her fellowship in hematology and oncology and her residency in internal medicine at the University of Rochester in Rochester, New York. Dr. Walsh joined NHOH in 2007.

Michael S. Buff, MD
Dr. Buff is a graduate of the State University of New York at Stony Brook School of Medicine in Stony Brook, NY. He completed both his fellowship in hematology and oncology and his residency in internal medicine at the Beth Israel Deaconess Medical Center in Boston, Massachusetts. Dr. Buff joined NHOH in 2007.

Ralph M. Falk, MD
Dr. Falk, an Internist, is our practices’ staff Hospitalist. He joined NHOH in 2006 after practicing eleven years at Exeter Hospital. He received his BS in Chemistry at SUNY in Albany, NY, his MD from New York Medical College in Valhalla, NY, and completed his residency in internal medicine at Danbury Hospital (Yale University). As a hospitalist for NHOH, he sees only hospitalized patients, he is in constant communication with our physicians and provides patients with a familiar and consistent care system.