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Dr. John Brennan, MD

Orthopedic Surgery* Age 56
Dr. John Brennan, MD
4.8 (80 Ratings)

Offers telehealth

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Dr. John Brennan, MD is an Orthopedic Surgery Specialist in East Setauket, NY.
Dr. John Brennan, MD
4.8 (80 Ratings)
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Dr. John Brennan, MD

Orthopedic Surgery* Age 56
East Setauket, NY
Accepting new patients

Offers telehealth

Dr. John Brennan, MD is an Orthopedic Surgery Specialist in East Setauket, NY.

About

Dr. John Brennan, MD is an Orthopedic Surgery Specialist in East Setauket, NY. They currently practice at Practice and are affiliated with Saint Charles Hospital, St. Catherine of Siena Hospital and Stony Brook University Hospital. Dr. Brennan has experience treating conditions like Joint Pain among other conditions at varying frequencies. At present, Dr. Brennan received an average rating of 4.8/5 from patients and has been reviewed 80 times. Their office accepts new patients and telehealth appointments. Dr. Brennan is board certified in Orthopaedic Sports Medicine and accepts multiple insurance plans.

Offers Telehealth

This provider offers telehealth appointments. Call the office to schedule.

Explains Conditions Well

Patients said this doctor explains conditions well.

Trustworthy

Patients said this doctor is trustworthy.

Friendly Staff

Patients said the staff was friendly.

Easy Scheduling

Patients said scheduling was easy.

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Experience Check

Enter a condition or procedure
Joint Pain
Arthrocentesis
Osteoarthritis of Knee
Joint Pain
Arthrocentesis
Osteoarthritis of Knee
Adhesive Capsulitis Shoulder
Back Pain
Baker’s Cyst
Bursitis
  • View other providers who treat Bursitis
Bursitis of Hip
Chondrocalcinosis
Chronic Neck Pain
Degenerative Disc Disease
Femur Fracture
Glenoid Labrum Tear
Herniated Disc
Hip Fracture
Hip Tendinitis
Internal Derangement of Knee
Intervertebral Disc Disease
Knee Ligament Tears
Lateral Epicondylitis
Limb Pain
Low Back Pain
Lumbar Radiculopathy
Medial Collateral Ligament (MCL) Sprain
Meniscus Tear
Miner's Knee
Osteoarthritis
Osteoarthritis of Hip
Osteoarthritis of Shoulder
Osteoarthritis of Spine
Radiculopathy
Rotator Cuff Tear
Rotator Cuff Tendinosis
Shoulder Impingement Syndrome
Hip Replacement
Hip Replacement with Robotic Assist
Knee Arthroscopy
Knee Replacement
Menisectomy
Rotator Cuff Surgery
Shoulder Arthroscopy
Steroid Injection
Total Knee Arthroplasty with Robotic Assist
AC Joint Injury
Achilles Tendinitis
Ankle Fracture
Ankle Sprain and Achilles Tendon Sprain or Rupture
Ankle Sprains and Strains
Ankylosing Spondylitis
Anterior Cruciate Ligament (ACL) or Posterior Cruciate Ligament (PCL) Tear
Anterior Cruciate Ligament (ACL) Tear
Arthritis
Arthritis of the Elbow
Autoimmune Diseases
Avascular Necrosis
Avascular Necrosis of Femoral Head
Bone Cancer
Bone Disorders
Bone Spur
Brachial Plexus Palsy
Broken Arm
Bunion
  • View other providers who treat Bunion
Cancer
  • View other providers who treat Cancer
Carpal Tunnel Syndrome
Cartilage Tear
Cervical Radiculopathy
Cervical Spine Myelopathy
Chondromalacia
Chronic Pelvic Pain
Clavicle Fracture
Coccyx or Sacrum Fracture
Complications of Joint Prosthesis
De Quervain's Disease
Difficulty With Walking
Dislocated Joint
Elbow Bursitis
Elbow Injuries
Elbow Sprain
Enthesopathy of Hip (incl. Trochanteric Bursitis)
Enthesopathy of Knee (incl. Bursitis of Knee)
Femoral Neck Fracture
Femoral Stress Fracture
Fibular Fracture
Foot Conditions
Foot Fracture
Foot Sprain
Fracture
  • View other providers who treat Fracture
Fracture of Hand and Fingers
Gait Abnormality
Ganglion Cyst
Genu Valgum
Gout
  • View other providers who treat Gout
Hammer Toe
Hand Conditions
Hand Fracture
Heel Spur
Hip Pointer
Hip Sprain
Humerus Fracture
Iliotibial Band Syndrome
Knee Dislocation
Knee Disorders
Knee Fracture
Knee Sprain
Knee Tendinitis
Lateral and Medial Epicondylitis (Tennis and Golf Elbow)
Lateral Collateral Ligament (LCL) Sprain
Leg Fracture Above Knee (incl. Hip)
Leg Fracture Below Knee (incl. Ankle)
Lumbar Spinal Stenosis
Lumbar Spine Fracture
Lumbosacral Radiculopathy
Lumbosacral Stenosis
Lupus
  • View other providers who treat Lupus
Marfan Syndrome
Medial Epicondylitis
Myelopathy
Neck Muscle Strain
Neck Strain (incl. Whiplash Injury)
Nerve Root Injury and Plexus Disorders (incl. Pinched Nerve)
Nerve Sheath Tumors
Non-Traumatic Rupture of Achilles Tendon
Osteoarthritis of Ankle
Osteoarthritis of Foot
Osteoarthritis of Hand
Osteoarthritis of Hand or Wrist
Osteoarthritis of Hip and Thigh
Osteoarthritis of Wrist
Osteochondritis Dissecans
Osteopenia
Osteosarcoma
Patellar Chondromalacia
Patellar Tendonitis
Patellofemoral Pain Syndrome (PFPS)
Pathological Spine Fracture
Pelvic Fracture
Peripheral Nerve Disorders
Plantar Fasciitis
Pseudoarthrosis
Pyogenic Arthritis
Reiter's Syndrome (Reactive Arthritis)
Rheumatoid Arthritis
Runner's Knee
Schmorl's Nodes
Sciatica
  • View other providers who treat Sciatica
Sciatica (Not Due to Disc Displacement)
Scoliosis
Shoulder Dislocation
Shoulder Disorders
Shoulder Fracture
Shoulder Tendinitis and Tenosynovitis
Sjögren's Syndrome
Spina Bifida
Spinal Cord Injury
Spinal Muscular Atrophy (SMA)
Spinal Osteophyte
Spinal Stenosis
Spine Deformities
Spine Disorders
Spine Fractures, Traumatic
Spondylitis
Spondylolisthesis
Spondylosis
Sprains and Strains (incl. Muscle Tear)
Systemic Chondromalacia
Tenosynovitis
Thoracic Spine Fracture
Tibia and Fibula Fractures
Tibia or Fibula Stress Fracture
Tibial Fracture
Trigger Finger
Wrist Fracture
Wrist Sprain or Strain
ACL Surgery
Arm Surgery
Arthroscopic Shoulder Surgery
Biceps Tendon Repair
Carpal Tunnel Release
Excision of Ganglion
Foot and Ankle Fracture Treatment, Open
Fracture Care
Hip Dislocation
Hip Replacement Revision
Joint Drainage
Knee and Leg Fracture and Dislocation Treatment
Knee and Lower Leg Fracture Treatment, Open
Knee Replacement Revision
Knee Surgery
Labrum Repair
Partial Knee Replacement
Patellar Tendon Repair
Peripheral Nerve Block
Quadriceps Tendon Repair
Shoulder Dislocation Treatment
Shoulder Fracture and Dislocation Treatment
Shoulder Fracture Treatment
Somatic Nerve Block
Trigger Finger Release
Trigger Point Injection
Viscosupplementation With Hyaluronate
Wound Repair

Insurance Accepted

* Please verify this information when scheduling an appointment.
  • Aetna HMO
    Choice Plus POS II
    Elect Choice (Open Access) EPO
    Managed Choice (Open Access) POS
    Open Choice PPO
    Premier Care Network APCN Choice (OAMC) POS II
    Premier Care Network Plus - Innovation Health
    Savings Plus of Metro, NY
    Select
  • Blue Card PPO
  • National EPO
  • Cigna PPO
    Open Access Plus
  • Flex Connecticut EPO
    Passage HMO
  • GHI CBP
    HIP Prime HMO
  • Blue Acess Employer Sponsored
    Empire Blue Cross Blue Shield PPO
    Empire Hospital
    Empire Hospital/Medical (Trad)
  • BluePPO HSA PPO
    SimplyBlue/Simply Blue Plus PPO
  • Pro Plans EPO
    Pro Plus Plans EPO
    Total Plans EPO
  • BCBS PPO
  • MagnaCare PPO
  • MVP Health Plan EPO
  • Oscar Circle EPO
  • Freedom
    Liberty
  • Choice Plus POS
    Navigate HMO
    Navigate POS
    Nexus Open Access
    Options PPO

Locations

  1. 1 Orthopedic Assoc. of Long Island Physicians and Medical Group Pllc
    6 Technology Dr Ste 100, East Setauket, NY 11733
    Monday
    09:00 - 17:00
    Tuesday
    09:00 - 17:00
    Wednesday
    09:00 - 17:00
    Thursday
    09:00 - 17:00
    Friday
    09:00 - 17:00
  2. 2 St. Charles Hospital
    200 Belle Terre Rd, Port Jefferson, NY 11777
  3. 3 St. Charles Orthopedics
    325 Meeting House Ln Bldg 1BLDG1, Southampton, NY 11968
  4. 4 St. Charles Orthopedics
    74 Commerce Ave Ste 4, Riverhead, NY 11901
    Monday
    09:00 - 17:00
    Tuesday
    09:00 - 17:00
    Wednesday
    09:00 - 17:00
    Thursday
    09:00 - 17:00
    Friday
    09:00 - 17:00

Patient Satisfaction

Likelihood to recommend Dr. Brennan
4.8
Based on 80 Reviews
5 Stars (75)
4 Stars (1)
3 Stars (0)
2 Stars (1)
1 Star (3)

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Patient Reviews
Nov 21, 2023
My family has used Dr Brennan's services in the past. We think he's the best. I recently had arthroscopic surgery on a torn meniscus. He informed me of ALL my options before the surgery and I was treated very well. I was seen in a timely manner and my surgery went off without a single problem. He has a great bedside manner and I would definitely go to him again.
Denise M Smith — Nov 21, 2023
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Photo: Dr. John Brennan, MD
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Dr. Brennan's Office & Staff

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Experience with Dr. Brennan

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Telehealth Options
This provider has not specified a telehealth appointment method. Would you still like to make an appointment with Dr. Brennan, or would you like to choose another provider and have an online appointment right now?
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(631) 689-6698

About Me

Care Philosophy
  • John Brennan, MD, received his medical degree from SUNY Health Science Center at Brooklyn after attending college at St. Louis University. He then performed a surgical internship at St. Lukes-Roosevelt Hospital Center in Manhattan and followed with his orthopedic residency also at St. Lukes-Roosevelt Hospital Center. During training, he completed rotations at Alfred I. DuPont Childrens Hospital in Delaware, Memorial Sloan-Kettering Cancer Center as well as The Blackrock Clinic in Dublin, Ireland.Dr. Brennan is board certified in orthopedic surgery and is a member of the American Association of Hip and Knee Surgeons, Medical Society of the State of New York, Suffolk County Medical Society and the Irish-American Orthopedic Society. He also has an extra board certification in sports medicine from the American Board of Orthopedic Surgery. Dr. Brennan merged his practice with St. Charles Orthopedics after being in practice in Southampton since 1999.Dr. Brennans practice focuses on complete care of the shoulder, hip and knee with a particular emphasis on minimally invasive techniques. His philosophy is to avoid surgery if at all possible but when it is necessary, utilize the fastest, easiest recovery possibly. These techniques include arthroscopic shoulder and knee repairs including rotator cuff and labral tears in the shoulder and meniscus and ACL tears in the knee. When hip and knee replacements are needed, he uses the latest cutting edge technology with small incision techniques.
Care Philosophy
Biography
  • Dr. John Brennan, MD is an orthopedic surgery specialist in East Setauket, NY. He specializes in Orthopedic Surgery and Sports Medicine.
Biography
Specialties*
Orthopedic Surgery
Sports Medicine
Specialties*
  • *Sharecare does not verify qualifications for medical specialties. Please verify your provider's specialty and qualifications directly with your provider and applicable medical board.
Education

Board Certifications

Board Certifications
  • Orthopaedic Sports Medicine and Orthopedic Surgery
Board Certifications
What’s a board certification and why is it important that my provider has one?

A board certification represents a provider’s dedication to ongoing training in one or more specialties, including the completion of intensive exams. While not all specialties have board certifications, if your provider does have one they’ve taken the extra step to master their specialty and to keep up with the latest advancements in their field.

Internship

Internship
  • St Lukes Roosevelt Hospital Center
Internship
Common Questions and Answers
Responses are sourced directly from patients.
Does Dr. Brennan communicate via email?
1 user said yes.
Yes
(1)
No
(0)
Does Dr. Brennan offer telehealth services or virtual visits?
1 user said yes.
Yes
(1)
No
(0)
Does Dr. Brennan offer an online patient portal?
1 user said yes.
Yes
(1)
No
(0)
Does Dr. Brennan have free onsite parking?
1 user said yes.
Yes
(1)
No
(0)
Does Dr. Brennan offer weekend visits?
1 user said yes.
Yes
(1)
No
(0)
Does Dr. Brennan offer evening visits?
1 user said yes.
Yes
(1)
No
(0)
Does Dr. Brennan specialize in working with children or adolescents?
No responses yet.
Yes
(0)
No
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Does Dr. Brennan specialize in working with seniors?
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Yes
(0)
No
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Does Dr. Brennan specialize in couples therapy?
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Yes
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No
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Does Dr. Brennan specialize in working with LGBTQ+ community?
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Does Dr. Brennan accept insurance?
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Frequently Asked Questions

Find contact information here to make an appointment.

A list of accepted insurance providers is available on the Sharecare insurance check. It is always a good idea to verify your insurance when making an appointment.

New patients are generally accepted by Dr. John Brennan, MD. To arrange an appointment, call the number on Dr. Brennan's profile.

Dr. John Brennan, MD is affiliated with Saint Charles Hospital, St. Catherine of Siena Hospital and Stony Brook University Hospital.

Yes, Dr. John Brennan, MD holds board certification in Orthopaedic Sports Medicine and Orthopedic Surgery.

Hospital Affiliations

  • Saint Charles Hospital

    200 Belle Terre Rd, Port Jefferson, NY

  • St. Catherine of Siena Hospital

    50 Route 25A, Smithtown, NY

  • Stony Brook University Hospital

    101 NICOLLS ROAD, Stony Brook, NY