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 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.

To continue to provide the high level of personal, attentive care for which he is known, Dr. Buono's practice includes a team of top-notch practitioners:

  • Patricia Sondgeroth, PA
  • James Earl, NP
  • Denise Karavas, PA

The practice 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, Medicare and Medicaid are accepted.

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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.

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

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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.

Committed to providing the highest standards of personal, attentive care, Dr. Carlson is joined in her practice by a team of top-notch practitioners that includes Danielle Stoebe, PA.

Dr. Carlson 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, Medicare and Medicaid are accepted.

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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.

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

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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.

Dr. Kubiak welcomes new patients. Most insurance plans, Medicare and Medicaid are accepted.

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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.

Committed to providing the highest standards of personal, attentive care, Dr. McNulty is joined in his practice by a team of top-notch practitioners that includes:

  • Ann Morrill, PA
  • Christina Zaccara, NP

Dr. McNulty welcomes new patients. For physical examinations, follow-up visits and routine office visits, scheduled appointments are recommended.

Most insurance plans, Medicare and Medicaid accepted.

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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.

Dr. Nadal is the Program Director to the family medicine resident physicians of Peconic Bay Medical Center's Graduate Medical Education program.

The practice welcomes new patients. For physical examinations, follow-up visits and routine office visits, scheduled appointments are recommended.

Most insurance plans, Medicare and Medicaid accepted.

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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. 

Dr. Paunikar welcomes new patients. Waiting times for appointments are typically short. Every effort is made to accommodate patients' schedules for scheduling school physicals, annual medical exams, screenings and vaccinations. Most insurance plans, Medicare and Medicaid are accepted.

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Marc Puchir, DO

Phone: 631-728-4500

80 E. Montauk Hwy
Hampton Bays, New York 11946
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Board-Certified by the American Board of Internal Medicine, Dr. Puchir 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, Medicare and Medicaid are accepted.

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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.

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.

Committed to providing the highest standards of personal, attentive care, Dr. Seodat is joined in his practice by a team of top-notch practitioners that includes:

  • Daniel Shapiro, NP
  • Catrina Grefe, NP

The practice 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, Medicare and Medicaid are accepted.

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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.

Dr. Spiegel 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, Medicare and Medicaid are accepted.

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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.

Dr. Tiu welcomes new patients. Waiting time for appointments are typically short.  Every effort is made to accomadate patient's schedules for  scheduling school physicals, vaccinations and routine screenings.  Most insurance plans, Medicare and Medicaid are accepted.

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