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Who We Are

Since its founding in 1940, Manhattan Internal Medicine Associates, P.C. has been combining state-of-the-art technology with award-winning practices in patient care, providing patients with unparalleled service and the most advanced medical treatments.


Manhattan Internal Medicine is committed to providing the highest standard in healthcare and patient services. Comprised of numerous leading physicians in a convenient midtown location, we enable patients to receive personal, individualized care with the security and convenience of a group practice. 

Through our partnerships, we are able to provide a broad range of medical services, anchored by a solid core of general internists and enhanced by the expertise of renowned specialists. Practice specialties include: Cardiology,  Gastroenterology , Hematology, Infectious Diseases, Physical Therapy and Pain Management. Manhattan Internal Medicine Associates patients benefit from the power of this select network of physicians.

Since 2014, patients have experienced the advantage of a powerful Electronic Health Record, allowing  physicians instantaneous access to each patient's most current and comprehensive medical information. The system also facilitates and fosters timely physician-to-physician communications, critical for high quality patient care.

As a Manhattan Internal Medicine Associate patient, you will enjoy the convenience of the Patient Portal, which allows secure electronic communications between you and your doctor, as well as access to your test results. We are continuously seeking quality improvement processes and patient satisfaction initiatives to discover new ways to provide you with premium medical care.

Providing you with the best doctors for the best care

Kathryn Alcarez, DO

Dr. Kathryn Alcarez is an experienced Primary Care Physician, specializing in Internal Medicine in Manhattan for the past 13+ years. Her caring approach to her patients is to provide the best preventative care modalities and evidence based medicine possible to maintain their long term health and wellness. She went to undergrad at Boston University, 4 year medical school at UNECOM in Maine, and did her 3 year Internal Medicine residency training at Lenox Hill Hospital, UES Manhattan, NYC.

Howard Antosofsky, MD

Dr. Howard Antosofsky has been a practicing gastroenterologist since 1991. He is also an Assistant Attending in the Department of Medicine at Beth Israel Medical Center. Dr. Antosofsky’s clinical areas of interest and expertise include:  colonoscopy, endoscopy, and acid reflux disorders. He practices internal medicine and his specialty is gastroenterology.

Ruvan Shein, MD

Dr. Ruvan Shein is a practicing gastroenterologist and internal medicine physician. After completing his residency, he was awarded the Bowen-Brooke Scholarship and undertook a research fellowship in Hepatology in London, England. Dr Shein currently is in private practice at Manhattan Internal Medical Associates in Midtown Manhattan.  He is board certified in Internal Medicine and Gastroenterology. 

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Heather McCartney, FNP-BC

Heather McCartney, FNP-BC is a Board Certified Family Nurse Practitioner. She graduated from Long Island University where she earned her Master of Science in Nursing (MSN) degree. She worked as a Registered Nurse in Med-Surg in the Mount Sinai Health System for 6 years. She is committed to delivering personalized primary care and building long-lasting trusted relationships with her patients. She approaches health in a holistic manner with a focus on lifestyle modifications such as diet and exercise, and preventative measures.

Robert A. Udesky, MD

Dr. Udesky graduated from the Washington University School of Medicine in 1970. He works in New York, NY and is a practicing Internal Medicine Physician. Dr. Udesky is affiliated with Mount Sinai Beth Israel Brooklyn Medical Center. 

Howard J. Siegel, MD

Dr. Howard Siegel is a gastroenterologist in New York, New York. He received his medical degree from Rosalind Franklin University of Medicine and Science and has been in practice for more than 20 years. He has been published and written extensively on treatments for irritable bowel syndrome and gastritis.  Dr Siegel is one of the founding partner of Manhattan Internal Medicine Associates, P.C.

Ashima Bakhru, MD

Dr. Ashima Bakhru graduated from the Ross University School of Medicine. She specializes in Internal Medicine and is also affiliated with Mount Sinai Beth Israel. Dr. Bakhru is an American Board of Internal Medicine certified physician.

Pramod Kumar Sanghi, MD, MPH, FCC

Dr. Pramod Sanghi is a distinguished and highly skilled Interventional Cardiologist
who is triple Board Certified in Cardiology, Nuclear Cardiology, & Interventional Cardiology. Dr Sanghi is an extremely caring and knowledgeable
Cardiologist with 20 years of experience and he is currently a Cardiovascular Surgeon at the prestigious NYU Langone Medical Center. Throughout his career, Dr. Sanghi has practiced a unique 
approach to preventive care that is centered around diagnostic excellence for the most successful treatment plans for his patients.

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Jennifer L. Torre, MSN, FNP-BC

Jennifer Torre, MSN, FNP-BC is a board-certified Family Nurse Practitioner. She obtained a B.A. in Psychology from Villanova University and then rounded our her studies at Emory University, graduating with a Bachelor of Science in Nursing and Master of Science in Nursing. She is committed to keeping her patients at the center of their care and thrives in her role as patient educator and advocate. She aims to create long-lasting relationships with her patients built on respect and trust, as these relationships fuel her passion for her career.

Mission Statement

Our goal is to provide a caring and compassionate environment to achieve health and well being in a soothing and comfortable office environment. We are not a typical private practice where you are just a number. We provide each patient with quality personalized medical care. Whatever our patients need to be healthy, we will do our best to provide that for you. 

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