Internal Medicine and Family Medicine Practices Join Stony Brook Medicine Physician Network

Lloyd Simon, MD and his practice Southold Internal Medicine, and Jarid Pachter, DO and his practice Southold Family Medicine have joined Stony Brook Community Medical, Stony Brook Medicine’s expanding network of community practices and physicians. 

Dr. Simon of Southold Internal Medicine, specializes in internal medicine and addiction medicine, and has been providing patient care in the Southold community for more than 35 years.

“I am enthusiastic to have my outpatient practice, Southold Internal Medicine, join Stony Brook Medicine,” said Dr. Simon. “As the Director of Addiction Services at Stony Brook Eastern Long Island Hospital, I welcome the Stony Brook Medicine Psychiatry Residency Program, as it will increase the number of trained physicians and specialists available to our patients here on the East End. Together we will improve our already high standard of patient care.” 
Dr. Simon attended medical school at SUNY Buffalo and completed his residency in Primary Care/Internal Medicine at the University of Massachusetts Memorial Medical Center. Dr. Simon has office hours Monday through Friday and is currently accepting new patients. 

Stony Brook Medicine welcomes private practices that are committed to the needs of their community and to providing the highest level of quality care.  

“We are very excited that Dr. Pachter joined our physician network and the Department of Family, Population & Preventive Medicine.  Dr. Pachter’s knowledge and experience in treating people with addiction issues is such an important service for our patients and trainees,” said Dr. Iris Granek, Chair, Department of Family, Population and Preventive Medicine, Stony Brook Medicine. “Medical students and residents will benefit from his mentorship as we educate the next generation of physicians to be more fully equipped to treat those directly affected by the opioid epidemic.”

Dr. Pachter specializes in family medicine and addiction medicine; he has been providing compassionate, comprehensive care for over 8 years at his practice, Southold Family Medicine.

“I am extremely excited to continue providing excellent care for the residents of the North Fork. Being part of Stony Brook Medicine will offer a much-needed opportunity to widen access to specialty care for these patients,” said Dr. Pachter. “Additionally, I look forward to expanding treatment of those suffering from addiction, not only on the North Fork, but for all of Suffolk County.” 

Dr. Pachter attended medical school at the University of New England College of Osteopathic Medicine.  He completed his residency at Plainview Hospital where he served as Chief Resident in his last year.  Dr. Pachter has office hours Monday through Friday and is currently accepting new patients. 

Editor’s note:  Patients who wish to make appointments with a physician at Southold Internal Medicine should call 631-765-4150. Patients who wish to make appointments with a physician at Southold Family Medicine should call 631-734-8742.  

Dr. Simon

 Lloyd Simon, MD

Dr. Pachter

Jarid Pachter, DO


About Stony Brook Medicine

Stony Brook Medicine integrates and elevates all of Stony Brook University's health-related initiatives: education, research and patient care. It includes five Health Sciences schools — Dental Medicine, Health Technology and Management, Medicine, Nursing and Social Welfare — as well as Stony Brook University Hospital, Stony Brook Southampton Hospital, Stony Brook Eastern Long Island Hospital, Stony Brook Children's Hospital and more than 230 community-based healthcare settings throughout Suffolk County. To learn more, visit


About Stony Brook Medicine Community Medical Group 

Stony Brook Medicine Community Medical Group, an arm of Stony Brook Medicine, includes over 35 community practices with over 50 locations across Long Island, from Farmingdale to Greenport. We offer exceptional care by more than 100 providers in 18 specialties committed to enhancing medical care coordination in the community. To learn more, visit