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Dr. Laurence E. Mermelstein, MD

Spine Specialist, Orthopedic Surgeon

Commack, NY

Overall rating
Recent reviews
Loved the fact that he told me ALL of my options.
Loved the fact that he told me ALL of my options.
PB · Less than 1 month ago
Dr. spent a lot of time with me expaining everything. Great confidence in doctor.
Dr. spent a lot of time with me expaining everything. Great confidence in doctor.
JY · Less than 3 months ago

About Dr. Laurence E. Mermelstein

**After booking an appointment, please expect a call from the office to verify insurance** Dr. Mermelstein is a Board Certified Orthopaedic Surgeon with additional Fellowship training and extensive experience in pediatric and adult spinal deformities, sports-related spinal injuries, and degenerative and traumatic conditions of the neck and back. He is recognized as one of the leading experts in managing the care and treatment of the pediatric scoliosis patient and is an active member of the premier Scoliosis Research Society. As the first surgeon on Long Island to perform the Posterolateral Endoscopic Discectomy procedure, he continues to lead the field in laser surgery and minimally-invasive techniques, which reduce pain and the risk of infection while also making recovery quicker. He has pioneered new intra-operative neurophysiological monitoring procedures to improve surgical safety. His expertise includes complex reconstructive spine surgery, disc arthroplasty (disc replacement), pediatric scoliosis, and laser surgery. Highly respected in the field of spine, he has lectured extensively at national and international meetings regarding spinal biomechanics and instrumentation. Dr. Mermelstein’s passion for spine care is reflected in his willingness to share his knowledge and expertise by providing professional seminars and community lectures on spine health. Dr. Mermelstein’s commitment to give “Back” is evident by his partnering with charitable organizations dedicated to improving the lives of children around the world, donating his time and skills to provide life altering surgery to improve the quality of their lives.

In-network insurances

  • AgeWell New York
  • CareConnect
  • EmblemHealth (formerly known as HIP)


  • Orthopedic Surgeon
  • Spine Specialist

Practice names

Hospital affiliations

  • Huntington Hospital
  • Saint Francis Hospital
  • Good Samaritan Hospital Medical Center
  • Peconic Bay Medical Center
  • Saint Catherine of Siena Medical Center
  • Cohen Children's Medical Center of New York

Board certifications

  • American Board of Orthopaedic Surgery

Education and training

  • Medical School - University of Pennsylvania, Doctor of Medicine
  • University of California, Davis, Fellowship in Spine Surgery
  • Yale-New Haven Hospital, Residency in Orthopedic Surgery
  • Yale-New Haven Hospital, Internship in General Surgery

Professional memberships

  • Medical Society of the State of New York
  • American Academy of Orthopaedic Surgeons
  • North American Spine Society
  • Suffolk County Medical Society
  • Scoliosis Research Society

Zocdoc awards

Speedy response

Languages spoken

  • English

Provider's gender


NPI number


Dr. Laurence E. Mermelstein's office locations

Long Island Spine Specialists, PC

763 Larkfield Rd, Second Floor

Commack, NY 11725

Long Island Spine Specialists, PC

400 Montauk Hwy, Suite 102

West Islip, NY 11795

Long Island Spine Specialists, PC

887 Old Country Rd, Suite D

Riverhead, NY 11901

Long Island Spine Specialists, PC

565 Hempstead Turnpike

West Hempstead, NY 11552

Patient reviews for Dr. Laurence E. Mermelstein

All reviews have been submitted by patients after seeing the provider. For more information, check out our Patient Knowledge Base.
Wait time
Bedside manner

Wait time
Bedside manner
Less than 3 months ago
Source: Zocdoc
Wait time
Bedside manner
Excellent care.
Less than 3 months ago
Source: Zocdoc
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