See All Orthopedic Surgeons in East Setauket, NY
Dr. John Brennan, MD Icon-share Share Profile
Super Profile

Dr. John Brennan, MD

Orthopedic Surgery
5 (77)
Accepting new patients
29 years of experience

Offers telehealth

icon-circle-check
Link Copied!
Profile link copied to clipboard!

Overview

Dr. John Brennan, MD is an Orthopedic Surgery Specialist in East Setauket, NY. They specialize in Orthopedic Surgery, has 29 years of experience, and is board certified in Orthopaedic Sports Medicine. They graduated from STATE UNIVERSITY OF NEW YORK / HEALTH SCIENCE CENTER AT BROOKLYN / COLLEGE OF MEDICINE and is affiliated with Saint Charles Hospital and St. Catherine of Siena Hospital.

Dr. Brennan works at St. Charles Orthopedics in East Setauket, NY with other offices in Riverhead, NY and Southampton, NY. They frequently treat conditions like Joint Pain, Patellofemoral Pain Syndrome or Knee Pain and Joint Drainage along with other conditions at varying frequencies. They are accepting new patients and accepts Aetna, Anthem and Blue Cross Blue Shield as well as other major insurance plans. Please call ahead to schedule an appointment and to confirm all accepted insurance plans.

Advertisement
Compare with other Orthopedic Surgery Specialists
Compare with other nearby providers

Locations

  1. 1
    St. Charles Orthopedics
    6 Technology Dr Ste 100, East Setauket, NY 11733 Icon Directions Right Arrow Directions Phone Icon (631) 689-6698
    Monday
    9:00am - 5:00pm
    Tuesday
    9:00am - 5:00pm
    Wednesday
    9:00am - 5:00pm
    Thursday
    9:00am - 5:00pm
    Friday
    9:00am - 5:00pm
    Saturday
    Closed
    Sunday
    Closed
  2. 2
    St. Charles Orthopedics
    74 Commerce Ave Ste 4, Riverhead, NY 11901 Icon Directions Right Arrow Directions Phone Icon (631) 689-6698
  3. 3
    St. Charles Orthopedics
    325 Meeting House Ln Bldg 1, Southampton, NY 11968 Icon Directions Right Arrow Directions Phone Icon (631) 689-6698

Hospital Affiliations
Admitting Hospitals

Admitting hospitals are where the provider is credentialed to see patients, perform procedures, and send patients for continuous care.

  • Saint Charles Hospital
  • St. Catherine of Siena Hospital

Experience & Treatment Frequency

NEW FEATURE

What is treatment frequency?

Our treatment frequency feature helps you understand howoften a provider performs or treats a specificprocedure/condition compared to other doctors. Providersrank in one of four frequency categories:

Very HighFrequency
HighFrequency
NormalFrequency
May Perform

Specific procedures/conditions that don’t haveenough data are indicated with “May Perform”. We encourageyou to contact the provider with questions about theirexperience.

Search for conditions or procedures.
Joint Pain
Patellofemoral Pain Syndrome or Knee Pain
Joint Drainage

Treatment frequency



Many providers have expertise treating multiple conditions or procedures. FindCare uses a variety of data sources to determine which conditions or procedures a provider treats and their level of experience.
Joint Pain Chevron Icon
Patellofemoral Pain Syndrome or Knee Pain Chevron Icon
Joint Drainage Chevron Icon
Osteoarthritis Chevron Icon
Osteoarthritis of Hip Chevron Icon
Osteoarthritis of Hip and Thigh Chevron Icon
Osteoarthritis of Knee Chevron Icon
Viscosupplementation With Hyaluronate Chevron Icon
Limb Pain Chevron Icon
Sprains and Strains (incl. Muscle Tear) Chevron Icon
Achilles Tendinitis Chevron Icon
Back Pain Chevron Icon
Baker’s Cyst Chevron Icon
Carpal Tunnel Syndrome Chevron Icon
Chronic Neck Pain Chevron Icon
De Quervain's Disease Chevron Icon
Degenerative Disc Disease Chevron Icon
Enthesopathy of Hip (incl. Trochanteric Bursitis) Chevron Icon
Fracture of Hand (incl. Fingers) Chevron Icon
Glenoid Labrum Tear Chevron Icon
Hand Fracture Chevron Icon
Herniated Disc Chevron Icon
Hip Fracture Chevron Icon
Internal Derangement of Knee Chevron Icon
Intervertebral Disc Disease Chevron Icon
Knee Dislocation Chevron Icon
Knee Sprain Chevron Icon
Lateral and Medial Epicondylitis (Tennis and Golf Elbow) Chevron Icon
Leg Fracture Above Knee (incl. Hip) Chevron Icon
Leg Fracture Below Knee (incl. Ankle) Chevron Icon
Low Back Pain Chevron Icon
Medial Collateral Ligament (MCL) Sprain Chevron Icon
Osteoarthritis of Shoulder Chevron Icon
Osteoarthritis of Spine Chevron Icon
Radiculopathy (Not Due to Disc Displacement) Chevron Icon
Rotator Cuff Tear Chevron Icon
Shoulder Impingement Syndrome Chevron Icon
Shoulder Tendinitis and Tenosynovitis Chevron Icon
Spondylolisthesis Chevron Icon
Tibia and Fibula Fractures Chevron Icon
Trigger Finger Chevron Icon
Adhesive Capsulitis Chevron Icon
Ankle Fracture Chevron Icon
Ankle Sprain and Achilles Tendon Sprain or Rupture Chevron Icon
Ankle Sprains and Strains Chevron Icon
Ankylosing Spondylitis Chevron Icon
Anterior Cruciate Ligament (ACL) or Posterior Cruciate Ligament (PCL) Tear Chevron Icon
Arthritis Chevron Icon
Arthritis of the Elbow Chevron Icon
Autoimmune Diseases Chevron Icon
Avascular Necrosis Chevron Icon
Bone Cancer Chevron Icon
Bone Disorders Chevron Icon
Bone Spur Chevron Icon
Brachial Plexus Palsy Chevron Icon
Broken Arm Chevron Icon
Bunion Chevron Icon
  • View other providers who treat Bunion
Bursitis Chevron Icon
  • View other providers who treat Bursitis
Cancer Chevron Icon
  • View other providers who treat Cancer
Cartilage Tear Chevron Icon
Cervical Spine Myelopathy Chevron Icon
Chondrocalcinosis Chevron Icon
Chronic Pelvic Pain Chevron Icon
Clavicle Fracture Chevron Icon
Coccyx or Sacrum Fracture Chevron Icon
Complications of Joint Prosthesis Chevron Icon
Difficulty With Walking Chevron Icon
Dislocated Joint Chevron Icon
Elbow Bursitis Chevron Icon
Elbow Injuries Chevron Icon
Elbow Sprain Chevron Icon
Enthesopathy of Knee (incl. Bursitis of Knee) Chevron Icon
Femur Fracture Chevron Icon
Foot Conditions Chevron Icon
Foot Fracture Chevron Icon
Foot Sprain Chevron Icon
Fracture Chevron Icon
  • View other providers who treat Fracture
Fracture Care Chevron Icon
Gait Abnormality Chevron Icon
Ganglion Cyst Chevron Icon
Gout Chevron Icon
  • View other providers who treat Gout
Hammer Toe Chevron Icon
Hand Conditions Chevron Icon
Heel Spur Chevron Icon
Hip Pointer Injuries Chevron Icon
Hip Sprain Chevron Icon
Humerus Fracture Chevron Icon
Knee Disorders Chevron Icon
Knee Fracture Chevron Icon
Lateral Collateral Ligament (LCL) Sprain Chevron Icon
Lumbar Spine Fracture Chevron Icon
Lupus Chevron Icon
  • View other providers who treat Lupus
Marfan Syndrome Chevron Icon
Myelopathy Chevron Icon
Neck Muscle Strain Chevron Icon
Neck Strain (incl. Whiplash Injury) Chevron Icon
Nerve Root Injury and Plexus Disorders (incl. Pinched Nerve) Chevron Icon
Non-Traumatic Rupture of Achilles Tendon Chevron Icon
Osteoarthritis of Ankle and Foot Chevron Icon
Osteoarthritis of Hand or Wrist Chevron Icon
Osteoarthritis of Hands Chevron Icon
Osteochondritis Dissecans Chevron Icon
Osteopenia Chevron Icon
Osteosarcoma Chevron Icon
Pathological Spine Fracture Chevron Icon
Pelvic Fracture Chevron Icon
Peripheral Nerve Disorders Chevron Icon
Plantar Fasciitis Chevron Icon
Pseudoarthrosis Chevron Icon
Pyogenic Arthritis Chevron Icon
Reiter's Syndrome (Reactive Arthritis) Chevron Icon
Rheumatoid Arthritis Chevron Icon
Runner's Knee Chevron Icon
Sciatica (Not Due to Disc Displacement) Chevron Icon
Scoliosis Chevron Icon
Shoulder Dislocation Chevron Icon
Shoulder Dislocation Treatment Chevron Icon
Shoulder Disorders Chevron Icon
Shoulder Fracture and Dislocation Treatment Chevron Icon
Shoulder Fracture Treatment Chevron Icon
Sjögren's Syndrome Chevron Icon
Spina Bifida Chevron Icon
Spinal Cord Injury Chevron Icon
Spinal Muscular Atrophy (SMA) Chevron Icon
Spinal Stenosis Chevron Icon
Spine Deformities Chevron Icon
Spine Disorders Chevron Icon
Spine Fractures, Traumatic Chevron Icon
Spondylitis Chevron Icon
Spondylosis Chevron Icon
Systemic Chondromalacia Chevron Icon
Thoracic Spine Fracture Chevron Icon
Tibia or Fibula Stress Fracture Chevron Icon
Wrist Fracture Chevron Icon
Wrist Sprain or Strain Chevron Icon
Check your insurance
    Close Icon
    Please double-check when making an appointment.

    View All Accepted Carriers

    • Aetna
    • Anthem
    • Beech Street (Multiplan)
    • Blue Cross Blue Shield
    • Capital District Physician's Health Plan (CDPHP)
    • CareFirst Blue Cross Blue Shield
    • Cigna
    • Commercial Insurance Company
    • Connecticare
    • EmblemHealth
    • Empire Blue Cross Blue Shield
    • Government Employees Health Association (GEHA)
    • Guardian
    • Harvard Pilgrim Health Care
    • Healthfirst
    • Humana
    • Locals (any local)
    • MagnaCare
    • Medicaid
    • Medicare
    • MultiPlan
    • Oxford Health Plans
    • POMCO Group
    • UnitedHealthCare
    • Vytra Health Plans
    • Worker's Compensation

    * Please verify this information when scheduling an appointment.

    Ratings & Reviews
    Reviews are displayed in date order and collected from patients who have agreed to reporting accurate and fair reviews. Providers with no reviews may have a new FindCare profile, or no submitted reviews on FindCare yet.

    Learn more about how FindCare's ratings and reviews work

    4.8
    Average provider rating
    Based on 77 ratings
    Patient Ratings (77)
    5 Star
    (72)
    4 Star
    (1)
    3 Star
    (0)
    2 Star
    (1)
    1 Star
    (3)
    Leave a review

    How was your appointment with Dr. Brennan?

    Jun 20, 2022
    Dr. John Brennan is an excellent surgeon! I needed a left knee surgery, a repair. I had the usual anxiety about a surgery. Dr. Brennans knowledge, kindness and compassion won me over. He listened to my concerns about pain management as I have a codeine allergy. He assured me he would manage my pain and he did. It’s a great feeling going into surgery, when you know the pain will be managed post surgery. I never felt rushed through my visits as he took the time to address all my concerns. There is a knee replacement in my future and Dr. Brennan is the only one I would want to do the surgery. A great surgeon and a nice man. Thank you.
    Victoria Caldwell — Jun 20, 2022
    Read more reviews on Healthgrades
    Photo: Dr. John Brennan, MD
    How would you rate your experience with Dr. John Brennan, MD?
    • Likelihood of recommending Dr. Brennan to family and friends

    Dr. Brennan's Office & Staff

    • Ease of scheduling urgent appointments
    • Office environment, cleanliness, comfort, etc.
    • Staff friendliness and courteousness
    • Total wait time (waiting & exam rooms)

    Experience with Dr. Brennan

    • Level of trust in provider's decisions
    • How well provider explains medical condition(s)
    • How well provider listens and answers questions
    • Spends appropriate amount of time with patients

    Tell Us About Yourself

    • Your gender:
    • Your age group:
    • Number of office visits you've had in the last 2 years:

    Finish Here

    • How would you like to confirm your survey information?
      Standard text messaging and data rates may apply.
    Thank you for sharing your feedback about Dr. John Brennan, MD.

    About Dr. John Brennan, MD

    Specialties
    • Orthopedic Surgery
    Specialties
    Years of Experience
    • 29 years of experience
    Years of Experience
    Years of experience represents how long a provider has been practicing in their field since graduating from medical school. Not all providers will have this information available.

    Languages Spoken
    • English
    Languages Spoken
    NPI Number
    • 1154353977
    NPI Number
    A National Provider Identifier (NPI) is a unique 10-digit identifier issued by the government to healthcare providers.

    Education & Certifications

    Residency
    • St Lukes Roosevelt Hospital Center
    Residency
    Internship
    • St Lukes Roosevelt Hospital Center
    Internship
    Medical Education
    • STATE UNIVERSITY OF NEW YORK / HEALTH SCIENCE CENTER AT BROOKLYN / COLLEGE OF MEDICINE
    Medical Education
    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.

    Frequently Asked Questions

    Dr. John Brennan, MD is accepting new patients on Healthline FindCare. You can check to see if Dr. Brennan is offering online scheduling or call the provider’s office for more information.

    Dr. Brennan has an average wait time of 10 – 15 minutes at their office(s).

    Dr. Brennan has indicated that they do offer telehealth services. Please call the provider’s office at for more information.

    Dr. Brennan has seen patients for Joint Pain, Patellofemoral Pain Syndrome or Knee Pain and Joint Drainage, and more. You can see other conditions treated by Dr. Brennan on their profile. Please call the provider’s office to confirm all visit reasons.

    77 patients have reviewed Dr. Brennan. The overall rating for this provider is 4.8. You can read verified reviews and ratings and leave your own review based on your experience with Dr. Brennan.

    Whether a person prefers to schedule an appointment online or over the phone with Dr. Brennan, there are benefits to both methods. A person calling to schedule an with Dr. Brennan appointment can ask questions about the practice, provider availability, conditions treated, procedures performed, and if their insurance carrier is accepted. While online scheduling is quicker, easier, allows one to view a wide range of appointment times, and may provide the ability to sync with a personal calendar.

    Are you Dr. John Brennan, MD?

    Claim your profile through Healthgrades to keep it updated and reach more patients.

    It’s free and only takes a minute.

    CLAIM MY PROFILE

    Search

    Primary Care
    Close Icon