Our Doctors

Office address:

375 Hooker Avenue Poughkeepsie, NY 12603-3600

Hours of operation:

Internal Medicine
8:00am – 5:00pm – Monday
8:00am – 5:00pm – Tuesday
8:00am – 5:00pm – Wednesday
8:00am – 5:00pm – Thursday
8:00am – 5:00pm – Friday
8:00am - Noon – Saturday


Our Dedicated Doctors

At Poughkeepsie Medical Group, LLP, our physicians are dedicated to providing the finest medical care in the Hudson River Valley, NY area. Since 1962, we have provided expert care in Internal Medicine.

Our Primary Care Physicians are board-certified in Internal Medicine, with some board-certified in sub-specialties. All are committed to the highest quality care for our hospitalized patients, as well as those who visit our offices. Our PCPs remain in constant communication to ensure a continuity of safe, convenient and personalized care.

Our Internists at Poughkeepsie Medical Group keep office hours six (6) days per week in Poughkeepsie to provide the best availability to adults of all ages.

For continuity of care, our physicians admit patients to Vassar Brothers Hospital and follow up with them individually, for personalized treatment. Our physicians provide the same caring service for office patients.

We also have Vaibhav Dingare, who performs a meditation class open to all, every Saturday at 12:30 PM.

The Poughkeepsie Medical Group presently consists of two physicians and 18 staff members. Following are biographies of our esteemed doctors: Dr. Sumita S. Mazumdar; and Dr. Abraham Fruchter and our nurse practitioners.




Dr. Sumita Mazumdar: Internal Medicine

1982 – 1989: MBBS, MPShah Medical College, India, Achievement of President’s Medal for Women’s First in State of Gujarat, India
1989 – 1992: MD Residency OBGYN at MPShah Medical College, India
1992 – 1996: MD practiced OBGYN at private hospital, Saudi Arabia
1998 – 2001: MD Residency Internal Medicine at Long Island College Hospital, Brooklyn, NY
2001 – Present: Practicing Internal Medicine at Poughkeepsie Medical Group, NY. 



AbrahamAbraham Fruchter, MD

1980 – 1983: Internal Medicine: Internship and Residency, Maimonides Medical Center, Brooklyn NY
1983 – 1985: Pulmonary Medicine: Fellowship, St. Lukes - Roosevelt Hospital Center, NY and Columbia University, Visiting Fellowship

July 1996   Instructor of Medicine: Cornell Medical College
1985 – 2012: Private Practice: Internal Medicine/Pulmonary, Brooklyn NY
1991 – 2012: Associate Attending: NY Community Hospital of Brooklyn NY
2012 – Present: Poughkeepsie Medical Group, NY


TerrieTerrie Armbruster, FNP

2011 - Sullivan County Community College - RN
2013 - State University of NY at Plattsburgh - BSN
2017 - Mount Saint Mary College - BSN - FNP

RN Work Experience - Hospital, nursing home, rehab centers, medical office & college, RN Staff Nurse, RN Supervisor, Employee Health Nurse, Infection Control Nurse, College Clinical Nursing Instructor

2018 - Present - Poughkeepsie Medical Group
FNP Specializing in Geriatric and women's health
House Calls
Wednesday - Assisted Living & Independent living facilities
Friday - Home Bound & Senior Citizen Patients


VDVaibhav Dingare, FNP

2007 - Associates in Applied Sciences of Nursing, Cochran School of Nursing
2012 - Bachelors of Science in Nursing, Mercy College, NY
2018 - Board Certified Family Nurse Practitioner, College of Mount Saint Vincent

2007 - 2018 Extensive experience in Perioperative and surgical nursing at St. John's Riverside Hospital
2018 - Present Day Poughkeepsie Medical Group specializing in Geriatric care/Assisted, Living Certified for DOT physicals for CMV drivers, and Certified in Medication Therapy Management
Speaks English, Hindi/Urdu, and Marathi

Meditation class open to all, every Saturday at 12:30 PM.


Robert GentileRobert Gentile, PA: Internal Medicine/Pain Management

1971:St John's University Queens, NY, B.A,
1974:Columbia University, New York, NY, M.A.
1986:Touro College, New York, NY, B.S.
1986 – 1994:Provided Primary care to multiple facilities in Hawaii
1994 – 1996:Urgent Care/ Doctors on Duty San Jose, CA
1996 – 2001:ER/Urgent Care Danbury Hospital, CT
2001 – 2011:Emergency Dept El Camino Hospital, CT
2011 – 2013:Primary Care/Pain Management , CA
2014 – Present: Poughkeepsie Medical Group


MandeepMandeep Kaur Saini NP

2008:Dutchess Community College, Poughkeepsie, NY
2008 – 2012: Wingate at Ulster
2011:SUNY New Paltz, New Paltz, NY
2013:SUNY Upstate Medical University, Syracuse, NY
2012 – 2014: Elderwood at Liverpool, Liverpool, NY
2015 – Present: Poughkeepsie Medical Group