5 /5 timothy hennessey: Dr. Hal Buch, and Nurse Practitioner Marisa Flanagan at Buch Gastroenterology are tops in the hudson valley. Both the office at 117 Marys Ave, Kingston and the surgical center staff have the best positive energy. RNJen delage at the surgical center excels in her bed side manner, knowledge, and practical skills. Thank you to all.