Mohammed Yosufzai, MD
Internist
506 Cromwell Avenue
Rocky Hill, CT 06067
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125 providers
Availability last updated 02/26/2026
Mohammed Yosufzai, MD
Internist
506 Cromwell Avenue
Rocky Hill, CT 06067
Deborah Seymour, APRN
Internist
168 South Main St
Suite D
Torrington, CT 06790
Margaret I. Chustecki, MD, MBA, is a skilled internist at Internal Medicine of Greater New Haven in Hamden, West Haven, and Milford, Connecticut. She is also an assistant clinical professor at Yale School of Medicine.
Born in Warsaw, Poland, and educated at Warsaw Medical School, Dr. Chustecki completed her internship and residency at Newton Wellesley Hospital and New England Medical Center in Massachusetts. Before joining Yale University as a clinical instructor, Dr. Chustecki started Internal Medicine of Greater New Haven in 2003.
Since then, the practice has flourished, boasting some of the best internists and providers in the United States. Dr. Chustecki maintains patients at the practice while teaching at Yale School of Medicine. She supervises up-and-coming medical professionals while educating them on the benefits of efficient health care.
Dr. Chustecki remains active in research, and has contributed to over 55 medical publications. She co-founded Chase Medical Research of Greater New Haven in 2015, and serves as the chief clinical trial investigator.
Margaret Chustecki, MD
Internist
1952 Whitney Ave
3rd Floor
Hamden, CT 06517
Margaret I. Chustecki, MD, MBA, is a skilled internist at Internal Medicine of Greater New Haven in Hamden, West Haven, and Milford, Connecticut. She is also an assistant clinical professor at Yale School of Medicine.
Born in Warsaw, Poland, and educated at Warsaw Medical School, Dr. Chustecki completed her internship and residency at Newton Wellesley Hospital and New England Medical Center in Massachusetts. Before joining Yale University as a clinical instructor, Dr. Chustecki started Internal Medicine of Greater New Haven in 2003.
Since then, the practice has flourished, boasting some of the best internists and providers in the United States. Dr. Chustecki maintains patients at the practice while teaching at Yale School of Medicine. She supervises up-and-coming medical professionals while educating them on the benefits of efficient health care.
Dr. Chustecki remains active in research, and has contributed to over 55 medical publications. She co-founded Chase Medical Research of Greater New Haven in 2015, and serves as the chief clinical trial investigator.
Margaret Chustecki, MD
Internist
98 Elm Street
West Haven, CT 06516
Morris Papernik, MD, FACP, is an experienced physician serving patients at Internal Medicine of Greater New Haven in the West Haven and Stratford, Connecticut, office.
A native New Yorker, Dr. Papernik graduated from Rush Medical College in Chicago, Illinois. He completed his residency in internal medicine at Rush and is a fellow of the American College of Physicians.
He has distinguished himself as a national thought leader in chronic fatigue syndrome, fibromyalgia, migraine headaches, diabetes, hypertension, and hyperlipidemia. Dr. Papernik has served on the Medical Presidential Advisory Committee to President Bush and Obama within the Department of Health and Human Services in Washington, DC.
Upon moving to Connecticut to be closer to family in 2008, he brought his expertise to Connecticut and now to Internal Medicine of Greater New Haven. Dr. Papernik has received numerous teaching awards and the Primary Care Leadership Award from the Connecticut Center for Primary Care. He has given multiple TV, radio, and newspaper interviews nationally.
Dr. Papernik enjoys teaching medical and nurse practitioner students from Yale, UConn, and
Netter School of Medicine. He also likes spending his free time with family and enjoys photography.
Morris Papernik, MD
Internist
98 Elm Street
West Haven, CT 06516
Margaret I. Chustecki, MD, MBA, is a skilled internist at Internal Medicine of Greater New Haven in Hamden, West Haven, and Milford, Connecticut. She is also an assistant clinical professor at Yale School of Medicine.
Born in Warsaw, Poland, and educated at Warsaw Medical School, Dr. Chustecki completed her internship and residency at Newton Wellesley Hospital and New England Medical Center in Massachusetts. Before joining Yale University as a clinical instructor, Dr. Chustecki started Internal Medicine of Greater New Haven in 2003.
Since then, the practice has flourished, boasting some of the best internists and providers in the United States. Dr. Chustecki maintains patients at the practice while teaching at Yale School of Medicine. She supervises up-and-coming medical professionals while educating them on the benefits of efficient health care.
Dr. Chustecki remains active in research, and has contributed to over 55 medical publications. She co-founded Chase Medical Research of Greater New Haven in 2015, and serves as the chief clinical trial investigator.
Margaret Chustecki, MD
Internist
831 Boston Post Road
Milford, CT 06460
Morris Papernik, MD, FACP, is an experienced physician serving patients at Internal Medicine of Greater New Haven in the West Haven and Stratford, Connecticut, office.
A native New Yorker, Dr. Papernik graduated from Rush Medical College in Chicago, Illinois. He completed his residency in internal medicine at Rush and is a fellow of the American College of Physicians.
He has distinguished himself as a national thought leader in chronic fatigue syndrome, fibromyalgia, migraine headaches, diabetes, hypertension, and hyperlipidemia. Dr. Papernik has served on the Medical Presidential Advisory Committee to President Bush and Obama within the Department of Health and Human Services in Washington, DC.
Upon moving to Connecticut to be closer to family in 2008, he brought his expertise to Connecticut and now to Internal Medicine of Greater New Haven. Dr. Papernik has received numerous teaching awards and the Primary Care Leadership Award from the Connecticut Center for Primary Care. He has given multiple TV, radio, and newspaper interviews nationally.
Dr. Papernik enjoys teaching medical and nurse practitioner students from Yale, UConn, and
Netter School of Medicine. He also likes spending his free time with family and enjoys photography.
Morris Papernik, MD
Internist
2900 Main Street
Suite 2A
Stratford, CT 06614
Gautam Ahluwalia, MD is an internal medicine and primary care physician with over 25 years of experience delivering holistic, evidence-based care focused on optimizing patient outcomes and building long-term, patient-centered relationships. He earned his medical degree and completed his internal medicine residency at the All India Institute of Medical Sciences (AIIMS), New Delhi—India’s top-ranked medical institution.
Dr. Ahluwalia previously served as Professor and Chief of Internal Medicine at a leading tertiary care medical school in North India, where he mentored thousands of medical students and residents and held senior leadership roles ensuring excellence in clinical care, education, and accreditation. An award-winning clinician, educator, and published author, he is recognized for his ethical, patient-first approach to care.
Dr. Ahluwalia now provides personalized primary care at Stoneleigh Medical Group’s Yorktown Heights and Brewster offices, where he is accepting new patients.
Dr. Gautam Ahluwalia
Internist
2424 Route 6
Brewster, NY 10509
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Rajiv Perinbasekar MD, is a gastroenterologist at Westchester Putnam Gastroenterology. He is passionate about providing high quality and personalized care to patients living in Putnam and northern Westchester.
Dr. Perinbasekar received his medical degree from SUNY Downstate Health Sciences University. He completed his internship and residency in Internal Medicine at the University of Maryland Medical Center in Baltimore, Maryland. During his residency he received awards for his research in inflammatory bowel disease. He then completed his fellowship in Gastroenterology and Hepatology at Hofstra-Northwell at Northshore University Hospital and Long Island Jewish Medical Center, where he also served as Chief Fellow.
Dr. Perinbasekar is knowledgeable in the treatment of digestive diseases of the gastrointestinal system and the liver, including colorectal cancer screening, irritable bowel syndrome, inflammatory bowel disease, and chronic liver disease. He has a special interest in using new technologies to enhance patient care.
Dr. Perinbasekar is currently accepting new patients.
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Dr. Rajiv Perinbasekar, MD
Internist
667 Stoneleigh Avenue
Suite 201, Building A
Carmel, NY 10512
Sudhir Bhatnagar, MD
Internist
One Liberty Square
New Britain, CT 06051
Sudhir Bhatnagar, MD
Internist
55 Grand Street
New Britain, CT 06050
Sudhir Bhatnagar, MD
Internist
100 Grand Street
New Britain, CT 06050
Sudhir Bhatnagar, MD
Internist
256 New Britain Avenue
Newington, CT 06111
Dr. Vivian Huynh, DNP, AGNP-C
Internist
100 Market Sq
Ste 2
Newington, CT 06111
