Peconic Bay Medical Group's Primary Care Specialists

A personal doctor for every member of your family

The East End's choice for primary care

Peconic Bay Medical Center's network of community-based physician practices is your connection to a comprehensive continuum of care that includes experienced primary care physicians trained and board-certified in family medicine, pediatrics, internal medicine, obstetrics, and gynecology.

  • Convenient Locations
  • Fast Appointments
  • Accepting New Patients Daily
  • Most health insurance plans, Medicare & Medicaid accepted

Family Physician is concerned with the total healthcare of the individual and the family and is trained to diagnose and treat a wide variety of ailments in patients of all ages. The Family Physician receives a broad range of training that includes adult medicine and care of the aged, the care of children, women's health, maternity care, preventive medicine and behavioral science. Special emphasis is placed on the primary care of families, utilizing consultants and community resources when appropriate—American Board of Medical Specialties.

Pediatrician is a physician specializing in the physical, emotional, and social health of children from birth to young adulthood. Care encompasses a broad spectrum of health services ranging from preventive healthcare to the diagnosis and treatment of acute and chronic diseases. The Pediatrician deals with biological, social and environmental influences on the developing child, and with the impact of disease and dysfunction on development—American Board of Medical Specialties.

Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and the digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs—American Board of Medical Specialties

An Obstetrician/Gynecologist possesses special knowledge, skills and professional capability in the medical and surgical care of the female reproductive system and associated disorders. This physician serves as a consultant to other physicians and as a primary physician for women—American Board of Medical Specialties.


Peconic Bay Medical Group physicians who practice in this specialty include:

Luigi Buono, DO

Phone: 631-298-2030

7905 Main Road
Mattituck, New York 11952
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32845 Main Road
Suite A
Cutchogue, New York 11935
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Board-Certified by the American Board of Family Practice, Dr. Buono has been providing compassionate primary medical care to the families on the East End since 1994.

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Afzal M. Butt, MD

Phone: 631-727-1600

34 Commerce Drive
Suite 1
Riverhead, New York 11901
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Board-certified in Internal Medicine, Dr. Butt also has extensive experience in emergency and urgent care medicine. He has been a resident of the Riverhead area for more than 20 years.

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Cynthia Carlson, MD

Phone: (631) 929-1256

54 Woodville Road
Shoreham, NY 11786
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Board-Certified in Family Medicine, Dr. Carlson has been providing compassionate primary medical care to the families of Mattituck since 1998. In addition to her medical practice, Dr. Carlson's experience includes tenure as Chief Resident and Clinical Assistant Professor in the Department of Family Medicine at the Stony Brook University Hospital and Medical Center.

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Julia Chachere, CNM, NP, MPH

Phone: (631) 405-3235

32845 Main Road
Cutchogue, New York 11935
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Julia Chachere brings more than 30 years of professional experience and certified expertise to Peconic Bay Medical Center’s Cutchogue practice in the areas of women’s health, family planning, pre-natal and post-partum care, and gynecology.

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Fang Chen, MD

Phone: (631) 405-3200

496 County Road 111
Building B
Manorville, New York 11949
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A board-certified Internist, Dr. Chen provides expert primary care medial services to adults. With her prior training as both a civil engineer and a physical therapist, Dr. Chen has a unique understanding of how the human body functions within its environment.

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Michael Dempsey, MD

Phone: (631) 727-1818

1333 Roanoke Avenue
Suite 202
Riverhead, NY 11901
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cum laude graduate of Harvard University with a Bachelor Medical Science degree from the Dartmouth College School of Medicine, Dr. Dempsey received his MD from the University of Rochester School of Medicine and Dentistry. He is board-certified in Internal Medicine and has been listed as one of “America’s Top Physicians, Internal Medicine” by the Consumer Research Council of America.

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James Earl, FNP-C, APRN, CEN, MS, MBA

Phone: 631-728-0393

80 E. Montauk Hwy
Hampton Bays, New York 11978
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A board-certified Family Nurse Practitioner, James Earl also brings experience as a Certified Emergency Nurse in trauma settings as well as in forward surgical units from his service with the U.S. Army Reserve Nurse Corps.

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Richard Kubiak, MD

Phone: 631-727-4470

31 Main Road
Suite 1
Riverhead, New York 11901
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Board-certified in Internal Medicine, Dr. Kubiak provides compassionate primary medical care to patients in Riverhead.

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Brian McNulty, MD

Phone: 631-878-2222

504B Montauk Highway
Center Moriches, NY 11934
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A Board-Certified practitioner of Family Medicine, Dr. McNulty also offers extensive training and experience in emergency response and emergency medical care gained as a paramedic with the New York City Emergency Medical Service, the New York City Police Department, and as a Firefighter/Paramedic with the East Farmingdale Fire Department.

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Evan Nadal, DO

Phone: (631) 727-1600

34 Commerce Drive
Suite #1
Riverhead, NY 11901
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Board-Certified by the American College of Osteopathic Family Physicians and a Clinical Assistant Professor in the Department of Family Medicine of the NYIT New York College of Osteopathic Medicine, Dr. Nadal is one of Suffolk County's most highly regarded family physicians.

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Pooja Atul Paunikar, MD

Phone: (631) 727-1600

34 Commerce Drive
Suite #1
Riverhead, New York 11901
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Board-certified in Family Medicine, Dr. Paunikar also has a Masters Degree in Public Health from Dartmouth Medical School. She was formerly Chief Resident in Family Medicine at Northwell Health’s Southside Hospital and has served on the faculties of New York Presbyterian Columbia Medical College, and the Zucker School of Medicine at Hofstra College. 

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Jessica Petchonka, PA-C, MPAS

Phone: 631-405-3200

496 CR 111
Building B
Manorville, New York 11949
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A member of the American Academy of Physician Assistants and the Association of Family Practice Physician Assistants, Ms. Petchonka is a nationally registered Medical Examiner and has been highly trained and holds certifications in Basic, Advanced, and Pediatric Life Support. She began her career as a practicing physician assistant in the Long Island Jewish Medical Center Emergency Department.

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Robert Daniel Rubin, DO

Phone: 631-405-3200

496 County Road 111
Building B
Manorville, NY 11949
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A board-certified specialist in Pediatrics, Dr. Rubin is also trained in pediatric emergency care, with certifications in Pediatric Advanced Life Support and as a Neonatal Resuscitation Program  instructor.

Dr. Rubin welcomes new patients. Waiting times for appointments are typically short. Every effort is made to accommodate patients' schedules for scheduling school physicals, vaccinations and routine screenings. Most insurance plans are accepted.

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Vishnudat Seodat, MD

Phone: 631-722-4470

31 Main Road
Suite 1
Riverhead, NY 11901
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A Family Practitioner, Dr. Seodat has been providing compassionate primary medical care to the families of Riverhead since 1989. A member of the American Academy of Family Practice, Dr. Seodat has been honored as "Physician of the Year" by Peconic Bay Medical Center.

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Steven Spiegel, MD

Phone: 631-288-2273

201 Montauk Highway
Suite 1
Westhampton Beach, New York 11978
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Board-Certified in Internal Medicine, Dr. Spiegel also brings extensive experience in urgent care medical service to his primary care practice in Westhampton Beach, where he has been serving the community since 1996.

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Danielle Stoebe, PA-C

Phone: 631-929-1004

54 Woodville Road
Shoreham, New York 11786
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A member of the American Academy of Physician Assistants, Ms. Stoebe has been highly trained and holds certifications in Basic, Advanced, and Pediatric Life Support. She began her career as a practicing physician assistant in the Long Island Jewish Medical Center Emergency Department.

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Jeffrey Tiu, DO

Phone: 631-722-4470

496 County Rd 111
Building B
Manorville, NY 11949
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Board-certified by the American Osteopathic Board of Family Physicians, Dr. Tiu, provides compassionate primary medical care.

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Christina Zaccara, ANP-C

Phone: 631-878-2222

504B Montauk Highway
Center Moriches, New York 11934
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A member of the New York Nurse Practitioner Association, Ms. Zaccara is a Certified Adult Nurse Practitioner who has been providing primary care services in homecare and office settings to residents of the East End for more than 15 years.

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