About
Dr. Lilly Steel earned her Bachelor of Arts in Biology from the University of California at San Diego in 1989. She went on to complete her Doctorate of Medicine at New York Medical College in Valhalla, NY in 1993. She completed both her internship and residency in Internal Medicine at Mt. Sinai Medical Center in New York City, finishing in 1996. The American Board of Internal Medicine recognizes her with board certification in the specialty.
Dr. Steel has practiced in the Riverhead area of Long Island for over 25 years. Many of her patients have trusted her with their care since she first opened there. She focuses on prevention and hands-on attention, particularly as patients navigate healthy aging. She values the deep relationships she builds with each person she treats. Outside of medicine, she enjoys traveling and reading.
Education & Training
Undergraduate
University of California at San Diego, San Diego, CA — Bachelor of Arts, Biology, 1989
Medical School
New York Medical College, Valhalla, NY — Doctorate of Medicine, 1993
Residency
Mt. Sinai Medical Center, New York, NY — Internal Medicine, 1993-1996
Certifications
Conditions Treated
Who is Dr. Steel right for?
Dr. Steel is a strong fit for adults seeking a long-term relationship with a single, consistent physician. Patients focused on prevention and healthy aging benefit most from her clinical approach. She works well with patients managing chronic conditions who want hands-on attention. Adults across Riverhead, the North Fork, and the Hamptons looking for same- and next-day access will find her practice well-suited to their needs.
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Frequently Asked Questions
Dr. Steel specializes in internal medicine and preventive medicine. She focuses on comprehensive adult primary care, with particular attention to healthy aging and chronic condition management. She holds board certification from the American Board of Internal Medicine.
Dr. Steel has practiced in the Riverhead area of Long Island for over 25 years. Many of her patients have trusted her with their care since she first opened her practice there.
Yes. Dr. Steel delivers all care herself. She does not use nurse practitioners or physician assistants, so every visit involves direct, one-on-one time with Dr. Steel.
Dr. Steel earned her medical degree from New York Medical College in 1993. She completed her internship and residency in Internal Medicine at Mt. Sinai Medical Center in New York City, finishing in 1996.
Yes. The American Board of Internal Medicine certifies Dr. Steel in internal medicine.
Dr. Steel treats a wide range of adult health conditions, including chronic diseases, and provides comprehensive preventive care. She places particular emphasis on supporting patients through healthy aging and managing ongoing health concerns.
Yes. Dr. Steel provides 24/7 physician access to her members. Patients can reach her directly at any time, day or night.
Yes. Dr. Steel connects patients to Medical Centers of Excellence for specialist referrals. She also coordinates travel care for members who need medical support while away from home.
Doctor profile last updated March 21, 2026