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Orthopedic Surgeons
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Medicare + 8 Networks
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About Dr. Marc S. Kowalsky
Background and practice information
Dr. Marc S. Kowalsky is an orthopedic surgeon with over 23 years of clinical experience serving patients in the Harrison, NY area. He completed his medical training at Tufts University School Of Medicine and has been in practice since 2003. He currently practices at Orthopaedic And Neurosurgery Specialists, Pllc.
Dr. Marc S. Kowalsky's clinical practice focuses on treating patients with arthritis pain and inflammation, severe inflammation, pain and inflammation, and related conditions, as well as performing minimally invasive arm and shoulder arthroscopy procedures, hip replacement surgeries, minimally invasive leg arthroscopy procedures for joint diagnosis and repair.
Dr. Marc S. Kowalsky has received a strong quality rating of 75.0 out of 100 from Medicare's quality assessment program, reflecting a commitment to evidence-based care. Dr. Marc S. Kowalsky is in-network with 8 insurance providers, including Aetna, Cigna, EmblemHealth, and 5 more. Patients are encouraged to verify coverage with his office before scheduling an appointment.
At a Glance
Education
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Claim this profilePractice Locations
2 locations
Orthopaedic And Neurosurgery Specialists, Pllc
Primary500 Mamaroneck Ave
Harrison, NY 10528
(203) 869-1145
Orthopaedic And Neurosurgery Specialists, Pllc
6 Greenwich Office Park
Greenwich, CT 06831
(203) 869-1145
Treatment & Experience
Clinical practice and procedure experience for Dr. Marc S. Kowalsky
Dr. Marc Kowalsky is an orthopedic surgeon in Harrison, NY. The following procedures reflect Dr. Kowalsky's clinical practice based on data reported to the Centers for Medicare & Medicaid Services (CMS).
Upper limb (arm) arthroscopy (minimally invasive joint repair)
Dr. Kowalsky has performed 21 minimally invasive arm and shoulder arthroscopy procedures. This procedure volume places Dr. Kowalsky above average among providers performing this surgery.
Hip replacement
Dr. Kowalsky also performs hip replacement surgeries (total hip arthroplasty).
Lower limb (leg) arthroscopy (minimally invasive joint repair)
Dr. Kowalsky also performs minimally invasive leg arthroscopy procedures for joint diagnosis and repair.
Services & Procedures
Dr. Marc S. Kowalsky's clinical practice encompasses office visits, diagnostic imaging, rehabilitation, and 1 other areas of care. Based on Medicare utilization data, Dr. Marc S. Kowalsky has provided a substantial volume of services, reflecting an active and established practice in orthopedic surgery.
Office Visits
630 servicesDr. Marc S. Kowalsky provides patient consultations ranging from routine follow-ups to comprehensive evaluations, including new patient visit and follow-up visit. Medicare patients typically pay significantly less than the standard charge for these services, with Medicare-approved rates averaging 76% below the billed amount.
Diagnostic Imaging
466 servicesDr. Marc S. Kowalsky utilizes diagnostic imaging to evaluate and monitor patient conditions, including x-ray of elbow, minimum of 3 views, shoulder X-ray, and other related services. Medicare patients typically pay significantly less than the standard charge for these services, with Medicare-approved rates averaging 91% below the billed amount.
Rehabilitation
1,215 servicesDr. Marc S. Kowalsky delivers rehabilitation services to restore function, strength, and mobility, including therapeutic exercise, functional activities, and other related services. Medicare patients typically pay significantly less than the standard charge for these services, with Medicare-approved rates averaging 73% below the billed amount.
Injections & Procedures
211 servicesDr. Marc S. Kowalsky performs therapeutic injections and minor procedures, with joint injection being a key part of his practice. Medicare patients typically pay significantly less than the standard charge for these services, with Medicare-approved rates averaging 87% below the billed amount.
Treatment Approach
Dr. Marc S. Kowalsky's treatment approach includes prescribing Meloxicam, Celecoxib, Methylprednisolone for his patients. These medications are commonly used for treating arthritis pain and inflammation, severe inflammation, pain and inflammation. Dr. Marc S. Kowalsky has treated a significant number of Medicare patients, demonstrating an established practice in this area.
Source: CMS Medicare Provider Utilization and Payment Data, 2023.
Insurance Networks
Accepted insurance plans and networks
Dr. Marc S. Kowalsky accepts 60 plans from 8 insurers, including Cigna, UnitedHealthcare, Aetna.
Source: CMS Transparency in Coverage filings (March 2026). Network participation may change — verify with the provider's office before scheduling.
Quality & Safety
CMS quality performance and patient safety measures
High Performing
CMS Quality Score · Out of 100
Dr. Kowalsky received a quality score of 75.0 out of 100 from the Centers for Medicare & Medicaid Services (CMS), which evaluates orthopedic surgeons on clinical quality, patient safety, and use of health information technology. A score above 75 is considered high-performing by CMS standards. This score reflects Dr. Kowalsky's commitment to maintaining strong standards of care for patients in Harrison, NY.
Source: CMS Merit-based Incentive Payment System
Financial Transparency
Industry payment disclosures
Pharmaceutical and medical device companies disclosed $138 in payments to Dr. Marc S. Kowalsky in 2024, primarily from DePuy Synthes Sales Inc. for food and beverage. These disclosures are required by federal law under the Physician Payments Sunshine Act.
Top Paying Companies
Source: CMS Open Payments, 2024.
Patient Reviews
Reviews and ratings from patients
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About Orthopedic Surgery
Specialty overview and common conditions
An orthopedic surgeon (also spelled orthopaedic surgeon) is a medical doctor (M.D. or D.O.) who specializes in the diagnosis, treatment, prevention, and rehabilitation of disorders, injuries, and diseases of the musculoskeletal system—including bones, joints, ligaments, tendons, muscles, and nerves....
Common conditions treated by orthopedic surgery specialists:
- Osteoarthritis and Joint Pain
- ACL Tears and Ligament Injuries
- Fractures (Broken Bones)
- Rotator Cuff Tears
Frequently Asked Questions
Common questions about Marc S. Kowalsky
Does Dr. Kowalsky accept Medicare?
Yes, Dr. Kowalsky accepts Medicare assignment. Patients with Medicare coverage can see Dr. Kowalsky and typically pay less out of pocket when using a provider who accepts Medicare assignment.
What insurance does Dr. Kowalsky accept?
Dr. Kowalsky is in-network with 8 insurance providers, including Aetna, Cigna, EmblemHealth, Humana, Medicare, and 3 more. Insurance networks can change, so patients should verify their specific plan coverage directly with Dr. Kowalsky's office before scheduling.
Does Dr. Kowalsky offer telehealth or virtual appointments?
Dr. Kowalsky does not currently list telehealth services. For virtual care options, contact the office directly or consider other orthopedic surgery providers in Harrison who offer telehealth.
What conditions does Dr. Kowalsky treat?
As a orthopedic surgery specialist, Dr. Kowalsky commonly treats conditions including osteoarthritis and joint pain, acl tears and ligament injuries, fractures (broken bones), rotator cuff tears, herniated disc and spinal stenosis, and other related health concerns. Contact the office to discuss your specific healthcare needs.
What medications does Dr. Kowalsky commonly prescribe?
Based on Medicare prescribing data, Dr. Kowalsky commonly prescribes medications including Meloxicam, Celecoxib, Methylprednisolone. The specific medications prescribed depend on each patient's individual diagnosis and health needs. Patients should discuss treatment options directly with Dr. Kowalsky during their consultation.
What is Dr. Kowalsky's quality rating?
Dr. Kowalsky has received a strong quality score of 75.0 out of 100 from the Centers for Medicare & Medicaid Services (CMS) through the Merit-based Incentive Payment System (MIPS). This score reflects performance across quality measures, promoting interoperability, improvement activities, and cost efficiency.
Where did Dr. Kowalsky go to medical school?
Dr. Kowalsky completed medical training at Tufts University School Of Medicine and has been practicing since 2003, bringing over 23 years of clinical experience.
Where is Dr. Kowalsky's office located?
Dr. Kowalsky practices at 500 MAMARONECK AVE, Harrison, NY 10528 at ORTHOPAEDIC AND NEUROSURGERY SPECIALISTS, PLLC. You can reach the office by calling (203) 869-1145.
How do I make an appointment with Dr. Kowalsky?
To schedule an appointment with Dr. Kowalsky, call the office at (203) 869-1145. New patients should have their insurance information and medical records ready when calling.
Data source: CMS National Provider Registry ·
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Medical Disclaimer: This content is for informational purposes only and is not a substitute for professional medical advice. Learn more about our editorial standards