Dr. Laurence Mermelstein, MD

Orthopedic Spine Surgery  |  
Male  |  
Age 52
Insurances AcceptedSave
Dr. Laurence Mermelstein, MD
Dr. Mermelstein is Board Certified Orthopaedic Surgeon with additional Fellowship training and extensive experience in pediatric and adult 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 and disc arthroplasty (disc replacement). 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. Medical Degree: University of Pennsylvania School of Medicine Philadelphia, Pennsylvania Internship/Residency Orthopaedic Surgery ResidentNew Haven, Connecticut Yale – New Haven Hospital Fellowships: Spinal Surgery Fellow: University of California Davis, California Professional Affiliations: Medical Society of the State of New York American Academy of Orthopaedic Surgeons Section Chief of Spinal Surgery- Huntington Hospital, Huntington, New York

763 Larkfield Rd

Commack, NY 11725

Contact Information
Dr. Laurence Mermelstein, MD

Dr. Laurence Mermelstein, MD

Accepted insurance

  • HIP Health Plan of New York
  • MagnaCare
  • Worker's Compensation

*Please verify this information when scheduling an appointment.

Learn about Dr. Mermelstein

Care Philosophy

A Comprehensive Approach to Treatment

At Long Island Spine Specialists, P.C., we know how debilitating back and neck disorders can be for our patients. We also know that when it comes to treating these conditions, finding the treatment option that best meets each patient's individual needs is perhaps the most important aspect to successfully alleviating or managing back and neck pain. 

As a patient at Long Island Spine Specialists, P.C. you can be sure that your treatment plan reflects your specific needs and concerns and will be carried out by physicians and surgeons who are recognized leaders in the field. We work as a team to help you effectively manage your condition and improve your quality of life.

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Dr. Mermelstein's Experience

Dr. Mermelstein's experience matches your search based on the following criteria:
  • Based on total number of patients treated over the last 12 months
  • Specializes in Orthopedic Spine Surgery
  • Board certified in Orthopedic Surgery
  • No malpractice claims found
  • No sanctions found
  • No board actions found


  • Orthopedic Spine Surgery
  • Orthopedic Surgery

Board Certifications

  • Orthopedic Surgery
    Accredited by: American Board of Orthopaedic Surgery*

Conditions Treated

  • Adolescent Idiopathic Scoliosis
  • Adult Scoliosis
  • Arthritis
  • Arthritis of the Neck
  • Arthritis of the Spine
  • Back Pain
  • Bone Cancer
  • Bone Disorders
  • Broken Neck
  • Bursitis
  • Carpal Tunnel Syndrome
  • Cervical Disc Degeneration
  • Cervical Herniated Disc
  • Cervical Radiculopathy
  • Cervical Spine Myelopathy
  • Cervical Spondylolisthesis
  • Chronic Neck Pain
  • Coccygeal Pain
  • Complex Regional Pain Syndrome (CRPS)
  • Degenerative Disc Disease
  • Degenerative Scoliosis
  • Degenerative Spondylolisthesis
  • Diffuse Idiopathic Skeletal Hyperostosis (DISH)
  • Gait Abnormality
  • Gout
  • Herniated Disc
  • Hip Bursitis
  • Internal Derangement of Knee
  • Intervertebral Disc Disease
  • Kyphosis
  • Low Back Pain
  • Lumbar Disc Degeneration
  • Lumbar Herniated Disc
  • Lumbar Radiculopathy
  • Lumbar Spine Fracture
  • Lupus
  • Myelopathy
  • Neck Pain
  • Neck Strain (incl. Whiplash Injury)
  • Nerve Root Injury and Plexus Disorders (incl. Pinched Nerve)
  • Non-Unions and Malunions of Fractures
  • Osteoarthritis
  • Osteoarthritis of Hip
  • Osteoarthritis of Hip and Thigh
  • Osteoarthritis of Shoulder
  • Osteoarthritis of Spine
  • Osteopenia
  • Osteoporotic Spine Fractures
  • Osteoporotic Vertebral Fracture
  • Pathological Spine Fracture
  • Peripheral Autonomic Neuropathy
  • Pinched Nerve in Back
  • Post-Laminectomy Syndrome
  • Pseudoarthrosis
  • Radiculopathy (Not Due to Disc Displacement)
  • Rheumatoid Arthritis
  • Sacrum Disorders
  • Scheuermann's Disease
  • Sciatica (Not Due to Disc Displacement)
  • Scoliosis
  • Sjögren's Syndrome
  • Spinal Compression Fracture
  • Spinal Cord Injury
  • Spinal Cord Tumor
  • Spinal Instability
  • Spinal Stenosis
  • Spine Deformities
  • Spine Disorders
  • Spine Fractures, Traumatic
  • Spondylarthropathy
  • Spondylitis
  • Spondylolisthesis
  • Spondylosis
  • Sprains and Strains (incl. Muscle Tear)
  • Thoracic Spine Fracture
  • Thoracic Spine Myelopathy
  • Whiplash


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  • Anterior Cervical Herniated Disc Surgery With Fusion
  • Anterior Cervical Herniated Disc Surgery With Plating and Fusion
  • Artificial Disc Replacement
  • Capsule Endoscopy
  • Cervical Herniated Disc Surgery
  • Cervical Microdiscectomy
  • Cervical Spine Reconstruction
  • Cervical Spine Surgery
  • Complex Spinal Instrumentation Procedure
  • Complex Spine Surgery
  • Disc Replacement
  • Dural Repair or Other Spinal Cord Repair
  • Endoscopic Spinal Surgery
  • Epidural Block, Facet Blocks
  • Herniated Disc Surgery
  • Kyphoplasty
  • Kyphoplasty, Percutaneous
  • Lamina Procedures (incl. Laminectomy, Laminoplasty, Laminotomy)
  • Laminectomy
  • Laminoplasty
  • Lumbar Disc Replacement
  • Lumbar Fusion
  • Lumbar Microdiscectomy
  • Lumbar Spine Surgery
  • Microdiscectomy
  • Myofascial Trigger Point Injection
  • Percutaneous Vertebroplasty
  • Posterior Cervical Laminectomy
  • Scoliosis Surgery
  • Spinal Compression Fracture Repair
  • Spinal Cord Stimulation
  • Spinal Decompression
  • Spinal Fusion
  • Spinal Instrumentation Procedures
  • Spinal Nerve Block
  • Spinal Reconstructive Surgery for Deformities
  • Spinal Tumor Surgery
  • Steroid Injection
  • Trigger Point Injection
  • X Stop® Interspinous Process Decompression System
  • XLIF® (eXtreme Lateral Interbody Fusion) Procedure


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Background Check

0 Malpractice Claims

No malpractice history found for New York.

0 Sanctions

No sanctions history found for the years that Healthgrades collects data.

0 Board Actions

No board actions found for the years that Healthgrades collects data.


  • The Johns Hopkins University
    Undergraduate School | Graduated 1986
  • University Of Pennsylvania School Of Medicine
    Medical School | Graduated 1990
  • Yale-New Haven Hospital
    Internship Hospital | Completed 1991
  • Yale New Haven Hospital
    Residency Hospital | Completed 1995
  • University Of California At Davis / School Of Medicine
    Fellowship Hospital | Completed 1996

Awards & Recognition

Awards & Honors
  • Healthgrades Honor Roll
Media & Publications

Dr. Mermelstein has no media or publications listed.

Languages Spoken

  • English
  • Spanish

Memberships & Professional Affiliations

Dr. Mermelstein does not have any memberships or affiliations listed. If you are Dr. Mermelstein and would like to add memberships or affiliations, please update your profile.

Dr. Mermelstein's Reviews

Likelihood of recommending Dr. Mermelstein to family and friends
based on 33 total reviews (12 with comments)
Dr. Mermelstein's Performance
  • Trustworthiness
  • Explains condition(s) well
  • Answers Questions
  • Time well spent
Office & Staff Performance
  • Scheduling
  • Office environment
  • Staff friendliness
  • Average wait time
    10 to 15 minutes
Patient Comments (12)
in Massapequa Park, NY |
My daughter has been seeing Dr. Mermelstein for 3 years and we are very pleased with his knowledge & expertise on scoliosis......she has had several spine doctors in the past & he has been the best!
in Holbrook, NY |
I have seen Dr Mermelstein for a consultation and I was so impressed with him and the way that he didn't push surgery upon and how we explored every other option and non operative care was the best route for me and I am feeling so much better. I appreciate his honesty and guiding me with a tailored treatment. I highly recommend him and his qualified staff.
in Holbrook, NY |
I had a kyphoplasty with Dr Mermelstein and he repaired my fractured spine and I am so happy with the results. It came out wonderfully. His bed side manner is like no other. He always takes the time to answer all of my questions and makes me feel so comfortable. The staff here is amazing and I highly recommend him.
in New Hyde Park, NY |
I felt the need to leave a review because I had seen multiple doctors for a lumbar herniated disc with onset of dropfoot. First off id like to Thank doctor Mermelstein for the successful surgery he performed on me. It was a nerve racking decision on having the surgery let alone who you were going to let cut your spine open. Amazing bedside manner, knowledgable, and well known in Huntington hospital. Im 9 weeks post op and feel great. Im getting better and better each day. 5 stars for this doctor
in Bronx, NY |
Dr Mermelstein is an amazing surgeon. He did my lumbar surgery and it relieved my severe sciatica pain that caused me to be in debilitating pain. I am thankful for his excellent surgical skills and getting me back on the path to maximum recovery and my life before pain. I highly recommend Dr Mermelstein and admire his patience bed side manner and deep compassion towards everyone he encounters.
in Kings Park, NY |
Dr. Mermelstein is a very thorough doctor and he took the time to listen to me. Nowadays the way things are for a doctor to take so much time with me to answer all of my questions and explain everything to me means a lot. His bed side manner is excellent and I highly recommend him.
in Stony Brook, NY |
Dr Mermelstein is a wonderful doctor. He gave me an answer that nobody else could give me. He always takes the time to answer all of my questions and is always honest with treatment options. The staff here is always so polite and kind. I highly recommend Dr Mermelstein.
Miller Place, NY |
Dr Mermelstein did my daughters spinal fusion surgery. Its now a year and a half later, I can say that he did a phenomenal job. She is doing so well. He made us feel very much at ease and is still very caring and concerned. I do recommend him wholeheartedly!
in Commack, NY |
I had lower back surgery with Dr Mermelstein he was so great in preparing me with my surgery he told me exactly what to expect exactly what was going to happen I woke up from the surgery without the debilitating pain in my leg Dr Mermelstein really saved my life I was in a lot of pain and now I'm back to my life before pain he took his time with me answered all of my questions he is the best. Huntington hospital was great the staff there was so caring. My family was confident that I was in goo
in East Northport, NY |
Dr. Mermelstein is very professional he cares about me truly and he listens to every question that I have and answers it perfectly. I highly recommend him my surgery is a success
in Nassau NY |
Dr. Mermelstein and the entire staff at Long Island Spine were fantastic. Dr. Mermelstein took plenty of time to exam me and provided me with all my health care options going forward. The staff & Dr. M were very informative, responsive and easy to deal with during the surgical process. I would recommend Dr. Mermelstein to anyone in need of spinal care and or surgery. -Discectomy Surgery Patient 2016
in Brentwood, NY |
My Lumbar fusion surgery with Dr. Mermelstein was 100% successful he exceeded my expectations and as always it is a very positive experience when I see him the staff is very professional I highly recommend him to anyone I am very pleased!!!
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This provider offers the following appointment availability:
Same Day
Next Day
Dr. Mermelstein accepts 3 insurance carriers
  • HIP Health Plan of New York
  • MagnaCare
  • Worker's Compensation
    Worker's Compensation WC

*Please verify this information when scheduling an appointment.

Hospitals where Dr. Mermelstein has admitting privileges

Saint Francis Hospital Roslyn
100 Port Washington Blvd
Roslyn, NY 11576
View Hospital Profile
Good Samaritan Hospital Medical Center
1000 Montauk Hwy
West Islip, NY 11795
View Hospital Profile
Huntington Hospital
270 Park Ave
Huntington, NY 11743
View Hospital Profile
Saint Catherine of Siena Medical Center
50 Route 25A
Smithtown, NY 11787
View Hospital Profile
North Shore University Hospital
300 Community Dr
Manhasset, NY 11030
View Hospital Profile
Peconic Bay Medical Center
1300 Roanoke Ave
Riverhead, NY 11901
View Hospital Profile


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