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Meet Our Hospitalists

The Hospitalist Service of HealthAlliance Hospital provides a highly skilled team of physicians specially trained in the delivery of inpatient care.

Research shows that hospitalists reduce the length of stay and patient treatment costs. In addition, hospitalists are leaders on several quality-improvement initiatives in key clinical areas, including transitions of care, co-management of patients, reducing hospital-acquired conditions and optimizing the care of patients.

For questions regarding our hospitalist program, please call Practice Manager Crystal Parrella at 845.514.4281.




James Corsones, M.D.

Co-Director of Internal Medicine



Samwel Oyugi, M.D.

Co-Director of Internal Medicine, Geriatrics



Gina Carena, M.D.

Internal Medicine



Mohammed Hamid, D.O.

Family Medicine



Abdul Khuda, M.D.

Internal Medicine










Marilyn Halpin, N.P.

Family Medicine



Michael Kiley, PA-C

General Medicine



Bekoe Ohene-Agyei, PA-C

General Medicine



Oksana Nichols, N.P.

Adult Health



Crystal Parella

Practice Manager