Physician Profile
Marc S. Kowalsky, MD
Unclaimed ProfileAbout Dr. Kowalsky
Based in Greenwich, CT, Marc S. Kowalsky, MD is listed in the NPI registry under orthopaedic surgery. Marc graduated from Tufts University School of Medicine in 2003. Medicare claims data shows Marc provided 5,778 services to 1,250 patients. The services billed most often include injection, methylprednisolone acetate, 1 mg, established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more, and x-ray of shoulder, minimum of 2 views.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it — free, and no identity document with a practice or institutional email.
Education & Training
Specialty
Credentials & Licensing
License numbers are what the provider reported to NPPES when the NPI was issued or updated. NPPES does not verify licensure; confirm current standing with the state licensing board.
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (203) 869-1145
- Email not available
Practice Locations
6 GREENWICH OFFICE PARK
Greenwich, CT 06831
Conditions Commonly Evaluated or Treated
Within Orthopedic Surgery generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Conditions
Most searched conditions
- Arthritis
- Carpal tunnel
- Rotator cuff tear
- Sciatica
- Torn Achilles tendon
- Torn ACL
- Torn meniscus
Elbow, hand, and wrist
- Cubital tunnel syndrome
- Golfer's elbow
- Tennis elbow
- Trigger finger
- Wrist fracture
Foot and ankle
- Ankle fracture
- Ankle sprain
- Heel pain
Hip
- Hip labral tear
- Lateral hip pain and trochanteric bursitis
Shoulder
- Broken collarbone
- Frozen shoulder
- Shoulder impingement
- Dislocated joint
Sports and soft tissue
- Stress fracture
Trauma and bone
- Bone fractures
- Osteoporosis
Foot & Ankle
- Bunions
Spine
- Herniated disc
- Scoliosis
- Spinal stenosis
Procedures & services
Most searched procedures
- Achilles tendon repair
- ACL reconstruction
- Carpal tunnel surgery
- Hip replacement
- Knee replacement
Evaluation and nonsurgical
- Cast placement and management
Arthroscopy
- Hip arthroscopy
- Rotator cuff repair
- Shoulder arthroscopy
Foot & Ankle
- Ankle Ligament Surgery
- Hammertoe Surgery
Foot and ankle
- Ankle arthroscopy
- Ankle fusion
- Bunion surgery
Hand & Wrist
- De Quervain's Release
Hand and upper extremity
- Cubital tunnel decompression
- Dupuytren contracture surgery
- Trigger finger release
Injections & Non-Surgical
- Knee Joint Injection
- PRP Injection
Injections & pain relief
- Cortisone Shot for Joint Pain
Joint replacement
- Partial knee replacement
- Reverse shoulder replacement
- Revision joint replacement
- Shoulder replacement
Knee
- Kneecap Stabilization Surgery
- Meniscus Surgery
Shoulder surgery
- Shoulder labrum repair
Trauma & Fractures
- Broken Hip Surgery
- Hardware Removal Surgery
Trauma and fixation
- Open reduction and internal fixation
Procedures Most Often Billed to Medicare
5,778 services · 1,250 patients · 19 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Aspiration and/or injection of fluid from large joint | Procedure | 20610 |
178 | More often than most peers in Orthopaedic Surgery |
| Prosthetic repair of shoulder joint, total shoulder | Procedure | 23472 |
18 | As often as other peers in Orthopaedic Surgery |
| Relocation of one muscle of shoulder or upper arm | Procedure | 23395 |
15 | Less often than most peers in Orthopaedic Surgery |
| X-ray of shoulder, minimum of 2 views | Imaging | 73030 |
265 | More than most peers in Orthopaedic Surgery |
| X-ray of knee, 4 or more views | Imaging | 73564 |
130 | More often than most peers in Orthopaedic Surgery |
| Mri scan of arm joint without contrast | Imaging | 73221 |
34 | More often than most peers in Orthopaedic Surgery |
| X-ray of elbow, minimum of 3 views | Imaging | 73080 |
32 | More often than most peers in Orthopaedic Surgery |
| Mri scan of leg joint without contrast | Imaging | 73721 |
23 | As often as other peers in Orthopaedic Surgery |
| Therapy procedure using exercise to develop strength, endurance, range of motion, and flexibility, each 15 minutes | Treatment | 97110 |
207 | As often as other peers in Orthopaedic Surgery |
| Therapy procedure using manual technique, each 15 minutes | Treatment | 97140 |
145 | As often as other peers in Orthopaedic Surgery |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other orthopaedic surgeons at this location 5
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 8
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
More connections — 26 related providers in 4 groups
Other orthopaedic surgeons in Greenwich 3
Same specialty, same city.
Trained at Tufts University School of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 2003 at Tufts University School of Medicine 7
Providers who graduated from the same medical school in the same year.
Also performs Aspiration and/or injection of fluid from large joint 8
Providers in CT who bill this service to Medicare most often.
Common questions
What does Dr. Kowalsky specialize in?
Dr. Kowalsky is an orthopaedic surgeon in Greenwich, CT. That is the designation recorded for this NPI in the federal registry, where it is listed as “Orthopaedic Surgery”.
NPI registry
Where is Dr. Kowalsky located?
Dr. Kowalsky is listed at 6 Greenwich Office Park, Greenwich, CT 06831. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Kowalsky's phone number?
The number on file is (203) 869-1145. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for Dr. Kowalsky?
Dr. Kowalsky's National Provider Identifier is 1699941823. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Dr. Kowalsky go to medical school?
Dr. Kowalsky attended Tufts University School of Medicine, graduating in 2003. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Kowalsky have?
Dr. Kowalsky has 23 years experience. Calculated from a graduation year of 2003, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Kowalsky do most often?
According to Medicare billing data, Dr. Kowalsky performs procedures including aspiration and/or injection of fluid from large joint, prosthetic repair of shoulder joint, total shoulder and relocation of one muscle of shoulder or upper arm; reads or performs imaging such as x-ray of shoulder, minimum of 2 views and x-ray of knee, 4 or more views; provides treatments such as therapy procedure using exercise to develop strength, endurance, range of motion, and flexibility, each 15 minutes and therapy procedure using manual technique, each 15 minutes, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dr. Kowalsky's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Kowalsky. If this is you, claiming it is free.
Guide.md
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.