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Dr. Hotchandani completed his residency in internal medicine at Rutgers Robert Wood Johnson Medical School in New Jersey. He holds a doctorate degree of medicine from SUNY Downstate College of Medicine in Brooklyn.

Outside of the office, Dr. Hotchandani enjoys going on walks with his wife and dogs, hiking, tennis and basketball. He is also passionate about environmental science, particularly climate change.

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.

With his advanced training in primary care and urgent care, Josh Shajan, MD, is the go-to provider for patients and their families in and around Greenwich, Stamford and areas. He cares for patients at his new private practice, Greenwich Primary Care located in the Cos Cob neighborhood of Greenwich, and serves as the Medical Director of the practice.

After attending Bergen Catholic High School, Dr. Shajan earned admission to an 8-year BS/MBA/MD program, completing his bachelor’s degree at Union College in Schenectady, New York, his Master of Business Administration through Union Graduate College, and then received his Doctor of Medicine from Albany Medical College in New York in 2012.

Dr. Shajan then completed his residency in internal medicine through the Yale University School of Medicine at Greenwich Hospital in Connecticut.

Since completing residency, Dr. Shajan has provided comprehensive primary and urgent care services continuously in Greenwich. Additionally, he has also previously served as the medical director for a network of New York City-based urgent cares, prior to joining a private practice in Greenwich in 2018. WIth the launch of Greenwich Primary Care, Dr. Shajan continues his tenure of providing high-quality care comprehensive primary and immediate care for numerous Greenwich and surrounding-area residents and their families.

When he’s not busy caring for patients, Dr. Shajan enjoys spending time with his wife Kavya, and their son at their home in Greenwich.

Melanie R. Weiner, PA-C, is a dedicated physician assistant committed to delivering top-notch, empathetic healthcare to her patients. With a wealth of experience serving diverse communities, Melanie currently practices at Greenwich Primary Care in Greenwich and Stamford, Connecticut. 

After earning her bachelor’s degree in allied health from the University of Connecticut in Storrs, Melanie pursued her passion for healthcare by obtaining her Master of Physician Assistant Studies (MPAS) from Pace University – Lenox Hill Hospital in New York, NY. During her tenure at Pace University, Melanie distinguished herself as a PA didactic student tutor and was honored with induction into the prestigious Pi Alpha – National Honor Society.

Driven by a desire to foster enduring connections with her patients, Melanie gravitated towards primary care. She believes in a patient-centric approach to medicine, emphasizing collaboration and support throughout every stage of life. Melanie's dedication to personalized care ensures that each patient receives a tailored treatment plan aimed at optimizing their overall well-being.

With Melanie, patients can expect compassionate care grounded in expertise and a genuine commitment to their health. Whether addressing acute concerns or providing ongoing preventive care, Melanie strives to make a meaningful difference in the lives of those she serves.

Dr. Tiago Miguel, board-certified in internal medicine by the American Board of Internal Medicine (ABIM), completed his medical education at the esteemed New York University School of Medicine. As a medical student, he achieved recognition by being inducted into the honor medical society, Alpha Omega Alpha, bestowed upon top graduating medical students.

Following his medical school education, Dr. Miguel underwent comprehensive internal medicine training at New York-Presbyterian Weill Cornell Medical Center. His training was further enriched with additional experiences at Memorial Sloan Kettering Cancer Center and the Hospital for Special Surgery. After completing his training, Dr. Miguel founded a concierge-internal medicine practice in Boca Raton, Florida.

This unique approach allowed him to provide personalized primary care through comprehensive health assessments, cutting-edge preventative services, and hospital care. However, Dr. Miguel’s passion for healthcare led him to make a change and sell his practice to return to the northeast.

He joined the esteemed Greenwich Primary Care practice where he is honored to contribute his expertise and share in the mission of promoting preventive care, enhancing early detection of disease, and achieving optimal health outcomes. Driven by his commitment to providing the highest level of personalized care, Dr. Miguel is dedicated to aligning his services with each patient's unique vision for health and longevity. 

Dr. Hotchandani completed his residency in internal medicine at Rutgers Robert Wood Johnson Medical School in New Jersey. He holds a doctorate degree of medicine from SUNY Downstate College of Medicine in Brooklyn.

Outside of the office, Dr. Hotchandani enjoys going on walks with his wife and dogs, hiking, tennis and basketball. He is also passionate about environmental science, particularly climate change.

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.

Dr. Yung Park, leads Elevate Medical’s Certified SPRAVATO® Treatment Center in Midtown Manhattan and now in Pleasantville, Westchester County, New York. She specializes in treating Treatment-Resistant Depression and Suicidality, offering advanced, evidence-based care in a compassionate setting.

The global pandemic was a collective turning point—shaking the foundations of our world and inner lives. It compelled many to pause and reflect, asking, "Who am I?" and "What truly matters?" As a society, we’ve grown weary of externally driven, linear motivations. A shift in consciousness is underway—an authentic, human longing to reconnect with our inner selves, often buried beneath years of ego-driven conditioning.

Dr. Park is deeply committed to supporting individuals on this inward journey. Her mission is to guide those who seek greater self-awareness, self-compassion, and inner peace—amidst the noise and chaos of everyday life.

She firmly believes that you are your own greatest healer, and that the answers you seek already reside within you. The first step is to awaken to your own consciousness.

Outside of her clinical work, Dr. Park finds joy in exploring New York State’s nature trails with SaLang and Mandu. She is passionate about environmental stewardship through conservation and reuse, and she delights in birdwatching—especially drawn to the quiet strength and beauty of female cardinals.

To schedule an appointment with Dr. Park, please contact the office or use our convenient online booking tool.

With his advanced training in primary care and urgent care, Josh Shajan, MD, is the go-to provider for patients and their families in and around Greenwich, Stamford and areas. He cares for patients at his new private practice, Greenwich Primary Care located in the Cos Cob neighborhood of Greenwich, and serves as the Medical Director of the practice.

After attending Bergen Catholic High School, Dr. Shajan earned admission to an 8-year BS/MBA/MD program, completing his bachelor’s degree at Union College in Schenectady, New York, his Master of Business Administration through Union Graduate College, and then received his Doctor of Medicine from Albany Medical College in New York in 2012.

Dr. Shajan then completed his residency in internal medicine through the Yale University School of Medicine at Greenwich Hospital in Connecticut.

Since completing residency, Dr. Shajan has provided comprehensive primary and urgent care services continuously in Greenwich. Additionally, he has also previously served as the medical director for a network of New York City-based urgent cares, prior to joining a private practice in Greenwich in 2018. WIth the launch of Greenwich Primary Care, Dr. Shajan continues his tenure of providing high-quality care comprehensive primary and immediate care for numerous Greenwich and surrounding-area residents and their families.

When he’s not busy caring for patients, Dr. Shajan enjoys spending time with his wife Kavya, and their son at their home in Greenwich.

Dr. Tiago Miguel, board-certified in internal medicine by the American Board of Internal Medicine (ABIM), completed his medical education at the esteemed New York University School of Medicine. As a medical student, he achieved recognition by being inducted into the honor medical society, Alpha Omega Alpha, bestowed upon top graduating medical students.

Following his medical school education, Dr. Miguel underwent comprehensive internal medicine training at New York-Presbyterian Weill Cornell Medical Center. His training was further enriched with additional experiences at Memorial Sloan Kettering Cancer Center and the Hospital for Special Surgery. After completing his training, Dr. Miguel founded a concierge-internal medicine practice in Boca Raton, Florida.

This unique approach allowed him to provide personalized primary care through comprehensive health assessments, cutting-edge preventative services, and hospital care. However, Dr. Miguel’s passion for healthcare led him to make a change and sell his practice to return to the northeast.

He joined the esteemed Greenwich Primary Care practice where he is honored to contribute his expertise and share in the mission of promoting preventive care, enhancing early detection of disease, and achieving optimal health outcomes. Driven by his commitment to providing the highest level of personalized care, Dr. Miguel is dedicated to aligning his services with each patient's unique vision for health and longevity. 

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.

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.

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.

Dr. Hotchandani completed his residency in internal medicine at Rutgers Robert Wood Johnson Medical School in New Jersey. He holds a doctorate degree of medicine from SUNY Downstate College of Medicine in Brooklyn.

Outside of the office, Dr. Hotchandani enjoys going on walks with his wife and dogs, hiking, tennis and basketball. He is also passionate about environmental science, particularly climate change.

Renita Butler, MD, is a board-certified internal medicine physician at Quality Healthcare NY, Primary Care Division, in Fishkill, Hopewell Junction, Poughkeepsie, and Wappinger Falls

, New York. She believes the provider-patient relationship should be about teamwork and that trust is essential in today’s medicine.

Dr. Butler has had a fascination with science, math, and helping others since elementary school. Her parents bought her a play doctor’s kit, and she would check family members' reflexes with a play reflex hammer and try to listen to their hearts with a play stethoscope. 

As she grew up, Dr. Butler participated in health fairs, listened to other career health professionals from elementary to high school, and shadowed some doctors in their offices during summers. Her pursuit of becoming an internal medicine physician has been lifelong.

For her undergraduate education, Dr. Butler attended Emory University, where she earned a Bachelor of Science in Biology. From there, she went to the University of South Alabama Medical Center for her Doctor of Internal Medicine and completed her residency at Meharry Medical College. 

Internal medicine follows a patient’s adult lifespan. Dr. Butler chose this specialty because she wants to provide lifelong care for individuals. She connects with patients by actually listening instead of just hearing. She works with each individual to create the best care for their condition and unique needs. 

Outside of work, Dr. Butler is very passionate about music. She even played classical piano for years.