Doctor profile · Federal record
Dr. James Karlson, MD
Sports Medicine (Orthopaedic Surgery) Physician (CMS: Orthopedic Surgery) · Cambridge, MA
- NPI 1114915261
- Accepts Medicare
- 38 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
Operates at 2 locations .
- Primary practice
-
300 Mount Auburn St, Suite 505
Cambridge, MA 021385600
(617) 491-6766
fax (617) 491-2552 - Additional location
-
20 Guest St Ste 225
Brighton, MA 021352065
(617) 738-8642
fax (617) 202-4172 - Mailing address
-
20 Guest St Ste 225
Brighton, MA 021352065
Credentials & registration
- NPI registered
- October 2005 — 21 yrs on file
- Profile last updated
- August 7, 2019
- Year of graduation
- 1988 — 38 yrs since
- Specialty taxonomy
- 207XX0005X — NUCC code
- State license (1)
- Massachusetts #74009
- Medicaid
- MA #3116956
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1114915261. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
2,935
Distinct HCPCS
10
Medicare allowed
$179,209
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
J0702 |
Injection, betamethasone acetate 3 mg and betamethasone sodium phosphate 3 mg | 1,224 | 207 | $7 | |
J3301 |
Injection, triamcinolone acetonide, not otherwise specified, 10 mg | 464 | 41 | $1 | |
20610 |
Aspiration and/or injection of fluid from large joint | 404 | 245 | $79 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 280 | 247 | $99 | |
99212 |
Established patient office or other outpatient visit, 10-19 minutes | 203 | 127 | $63 | |
99203 |
New patient office or other outpatient visit, 30-44 minutes | 135 | 135 | $122 | |
J7323 |
Hyaluronan or derivative, euflexxa, for intra-articular injection, per dose | 97 | 31 | $127 | |
99202 |
New patient office or other outpatient visit, 15-29 minutes | 28 | 28 | $80 | |
29881 |
Removal of knee cartilage using an endoscope | 21 | 20 | $573 | |
29824 |
Partial removal of collar bone at shoulder using an endoscope | 19 | 19 | $366 |
In context: peer comparison
Among 1 peers in this city , average services per provider: 209. This provider delivers 14× the peer median.Open Payments
Industry payments received
All-time total
$29
Transactions
1
Manufacturers
1
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Stryker Corporation | 1 | $29.37 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
119
Patients
84
Total drug cost
$621
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Oxycodone Hcl | Generic | 65 | 51 | $313 |
| Tramadol Hcl | Generic | 42 | 21 | $221 |
| Hydrocodone-Acetaminophen (Hydrocodone/Acetaminophen) | Brand | 12 | 12 | $88 |
Frequently asked questions
What is Dr. James Karlson's medical specialty?
Dr. James Karlson practices Sports Medicine (Orthopaedic Surgery) Physician in Cambridge, MA.
Where does Dr. James Karlson practice?
Dr. James Karlson practices at 300 Mount Auburn St, Cambridge, MA 021385600. Office phone: 6174916766.
What is Dr. James Karlson's NPI?
Dr. James Karlson's National Provider Identifier (NPI) is 1114915261, issued by NPPES.
Does Dr. James Karlson accept Medicare assignment?
Yes. Dr. James Karlson accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. James Karlson commonly perform?
Top Medicare-reported procedures in 2023: Injection, betamethasone acetate 3 mg and betamethasone sodium phosphate 3 mg (HCPCS J0702); Injection, triamcinolone acetonide, not otherwise specified, 10 mg (HCPCS J3301); Aspiration and/or injection of fluid from large joint (HCPCS 20610). Source: CMS Medicare Physician & Other Practitioners file.