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Edit this profileWhere to find James A. Karlson, MD
- Cambridge location main office
300 Mount Auburn St, Suite 505, Cambridge, MA 02138 - Brighton location
20 Guest St Ste 225, Brighton, MA 02135
About Dr. Karlson
Based in Cambridge, MA, James A. Karlson, MD is listed in the NPI registry under orthopaedic sports medicine. James graduated from Warren Alpert Medical School of Brown University in 1988. Medicare claims data shows James provided 5,190 services to 1,083 patients. The services billed most often include injection, triamcinolone acetonide, preservative-free, extended-release, microsphere formulation, 1 mg, injection, methylprednisolone acetate, 1 mg, and injection, betamethasone acetate 3 mg and betamethasone sodium phosphate 3 mg. NPI 1114915261 identifies this record in the national registry.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
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
- (617) 491-6766
- Email not available
Practice Locations
300 MOUNT AUBURN ST SUITE 505
Cambridge, MA 02138
20 Guest St Ste 225
Brighton, MA 02135
Conditions Commonly Evaluated or Treated
Within Orthopedic Sports Medicine 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
Pain
Most searched conditions
Ankle & Foot
- Heel Spurs
- High Ankle Sprain
- Peroneal Tendon Subluxation
Bone
Bone & Joint
Core & Hip
Elbow
- Elbow Ligament Tear
- Golfer's elbow
- Little League Elbow
- Tennis elbow
Foot & Ankle
Hand & Wrist
- Torn Thumb Ligament
- Wrist Fractures and Sprains
Head & Spine
Hip
Hip & Groin
- Hip Pointer
- Snapping Hip Syndrome
- Sports Hernia
Joint
- Hip Pain and Tightness
- Loose cartilage in joint
Joints
Knee
- Baker's Cyst
- Chondromalacia
- Jumper's knee
- Knee collateral ligament injury
- Patellar instability and dislocation
- Patellofemoral pain syndrome
- PCL tear
- Plica Syndrome
- Water On The Knee
Knee & Hip
Leg
- Acute Leg Compartment Syndrome
- Hamstring Pull
- Shin Splints
Muscle & Tendon
Pediatric & Teen Sports
- Little league shoulder
- Osgood-Schlatter Disease
- Sever's Disease
Shoulder
- Broken collarbone
- Clavicle pain
- Dead arm syndrome
- Frozen shoulder
- Separated Shoulder
- Shoulder impingement
- Shoulder instability and dislocation
- Shoulder Labrum Tear
Shoulder & Arm
- Torn bicep
Spine & Back
Procedures & services
Injections
- Joint injection or aspiration
- Bone Marrow Aspirate Injection
- Knee Joint Injection
- Knee Joint Injections
- Trigger-point injection
- Ultrasound-guided injection
Orthopedics
Most searched procedures
Diagnostics
Evaluation
Non-Surgical Treatment
Procedures
Regenerative Medicine
- PRP Injection
- Stem Cell Therapy
Surgery
- Ankle arthroscopy
- Ankle Ligament Surgery
- Bicep tendon repair
- Bursa Removal
- Cartilage restoration
- Collarbone fracture surgery
- Elbow Scope
- Exertional compartment syndrome release
- Hamstring repair surgery
- High Ankle Sprain Surgery
- Hip arthroscopy
- Hip labrum repair
- Knee arthroscopy
- Kneecap Stabilization Surgery
- MCL repair
- Meniscus repair
- Microfracture Knee Surgery
- Open reduction and internal fixation
- PCL Reconstruction
- Peroneal Tendon Repair
- Rotator cuff repair
- Separated shoulder surgery
- Shoulder arthroscopy
- Shoulder labrum repair
- Shoulder replacement
- Shoulder stabilization surgery
- Sports hernia surgery
- Stiff Big Toe Surgery
- Tennis Elbow Surgery
- Thumb Ligament Repair
Therapy & Devices
Procedures Most Often Billed to Medicare
5,190 services · 1,083 patients · 15 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Aspiration and/or injection of fluid from large joint | Procedure | 20610 |
332 | More often than most peers in Orthopaedic Sports Medicine |
| Shaving of part of shoulder bone and repair of ligament using an endoscope | Procedure | 29826 |
20 | More often than most peers in Orthopaedic Sports Medicine |
| Partial removal of collar bone at shoulder using an endoscope | Procedure | 29824 |
19 | As often as other peers in Orthopaedic Sports Medicine |
| Removal of both knee cartilages using an endoscope | Procedure | 29880 |
17 | More often than most peers in Orthopaedic Sports Medicine |
| Repair of shoulder rotator cuff using an endoscope | Procedure | 29827 |
17 | As often as other peers in Orthopaedic Sports Medicine |
| Removal of knee cartilage using an endoscope | Procedure | 29881 |
15 | More often than most peers in Orthopaedic Sports Medicine |
| Injection, triamcinolone acetonide, preservative-free, extended-release, microsphere formulation, 1 mg | Drug given | J3304 |
1,440 | As often as other peers in Orthopaedic Sports Medicine |
| Injection, methylprednisolone acetate, 1 mg | Drug given | J1010 |
1,120 | Less often than most peers in Orthopaedic Sports Medicine |
| Injection, betamethasone acetate 3 mg and betamethasone sodium phosphate 3 mg | Drug given | J0702 |
1,061 | More than most peers in Orthopaedic Sports Medicine |
| Injection, triamcinolone acetonide, not otherwise specified, 10 mg | Drug given | J3301 |
584 | As often as other peers in Orthopaedic Sports Medicine |
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 sports medicines at this location 1
Same specialty, same street address — most likely the same department or group.
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.
Trained at Warren Alpert Medical School of Brown University 8
Other providers in the same specialty who trained at the same institution.
More connections — 15 related providers in 2 groups
Class of 1988 at Warren Alpert Medical School of Brown University 8
Providers who graduated from the same medical school in the same year.
Also performs Aspiration and/or injection of fluid from large joint 7
Providers in MA who bill this service to Medicare most often.
Common questions
What does Dr. Karlson specialize in?
Dr. Karlson is an orthopaedic sports medicine in Cambridge, MA. That is the designation recorded for this NPI in the federal registry.
NPI registry
Where is Dr. Karlson located?
Dr. Karlson is listed at 300 Mount Auburn St Suite 505, Cambridge, MA 02138. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Karlson's phone number?
The number on file is (617) 491-6766. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for Dr. Karlson?
Dr. Karlson's National Provider Identifier is 1114915261. 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. Karlson go to medical school?
Dr. Karlson attended Warren Alpert Medical School of Brown University, graduating in 1988. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Karlson have?
Dr. Karlson has 38 years experience. Calculated from a graduation year of 1988, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Karlson do most often?
According to Medicare billing data, Dr. Karlson performs procedures including aspiration and/or injection of fluid from large joint, shaving of part of shoulder bone and repair of ligament using an endoscope and partial removal of collar bone at shoulder using an endoscope, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dr. Karlson's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Karlson. If this is you, claiming it is free.
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