Dr. Jeffrey ElfenbeinDO
Internal Medicine
at Dr. Jeffrey Elfenbein Concierge Internal Medicine — Seaford, NY
About
Dr. Jeffrey Elfenbein graduated from Philadelphia College of Osteopathic Medicine in 1990 and has practiced internal medicine for over 30 years. He holds hospital affiliations at St. Joseph's Catholic and Northwell Syosset on Long Island. His clinical work spans internal medicine, preventive care, weight management, and chronic disease treatment.
Dr. Elfenbein is deeply passionate about the relationship between mind and body. He draws on the teachings of Dr. John Sarno to guide his approach to chronic pain, fibromyalgia, anxiety, and depression. He supports patients in opioid addiction recovery through Suboxone treatment and uses current weight loss medications for medically supervised obesity care. He provides members with his personal cell phone number for urgent after-hours contact. His philosophy centers on educating patients about fitness, weight management, and long-term healthy living.
Education & Training
Medical School
Philadelphia College of Osteopathic Medicine
Conditions Treated
Who is Dr. Elfenbein right for?
Dr. Elfenbein is a strong fit for adults seeking a primary care physician who addresses the whole person. Patients managing chronic pain, fibromyalgia, anxiety, or depression benefit from his mind-body approach. He also works well with patients tackling obesity or navigating opioid addiction recovery. Adults who want direct, unhurried access to their physician will find his after-hours availability and same-day scheduling valuable.
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Dr. Elfenbein treats a broad range of adult conditions, including chronic pain, fibromyalgia, anxiety, depression, obesity, and opioid addiction. He also delivers full-spectrum internal medicine and preventive care. His clinical approach addresses physical and mental health together, informed by his understanding of the mind-body connection.
Dr. Elfenbein draws on the mind-body teachings of Dr. John Sarno when treating chronic pain and fibromyalgia. He views these conditions as deeply connected to emotional and mental health. This perspective shapes how he evaluates and manages patients with persistent pain.
Yes, Dr. Elfenbein provides Suboxone treatment for patients in opioid addiction recovery. He supports individuals throughout their recovery journey as part of his internal medicine practice. Patients interested in this service can contact the office directly.
Dr. Elfenbein provides medically supervised weight loss and obesity treatment. He uses current weight loss medications tailored to each patient's needs and health goals. His philosophy also emphasizes fitness education and long-term healthy living as part of comprehensive weight management.
Dr. Elfenbein earned his medical degree from Philadelphia College of Osteopathic Medicine in 1990 and has practiced internal medicine for over 30 years. He holds affiliations at St. Joseph's Catholic and Northwell Syosset hospitals.
Dr. Elfenbein provides members with his personal cell phone number for direct after-hours contact. This allows patients to reach him for urgent medical issues outside of regular office hours. His goal is to keep members out of the emergency room whenever possible.
Dr. Elfenbein sees adults for all primary care needs. His patient mix includes those managing chronic conditions, patients working on weight loss, individuals dealing with mental health concerns, and those in recovery from opioid addiction. He serves patients throughout the Seaford and greater Long Island area.
Dr. Elfenbein holds affiliations at St. Joseph's Catholic and Northwell Syosset hospitals. Even at facilities where he does not serve as the attending physician, he makes courtesy visits and communicates with hospitalists to support his members during hospitalizations.
Doctor profile last updated June 11, 2026