Active NPI
James Allan Karlson, MD
- Sports Medicine (Orthopaedic Surgery) Physician
- Cambridge, MA
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Sports Medicine (Orthopaedic Surgery) Physician
- License
- 74009
- Practice address
- 300 Mount Auburn St
Suite 505
Cambridge, MA 02138-5600 - Phone
- (617) 491-6766
- Fax
- (617) 491-2552
- NPI assigned
- Oct 12, 2005
- Sex
- Male
- Sole proprietor
- No
NPPES NPI Registry
Registry information is reported by the provider to CMS and is not verified. About this source
Specialties & licenses 1
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Sports Medicine (Orthopaedic Surgery) Physician | 207XX0005X | 74009 | MA | Primary |
Addresses
Primary practice location
300 Mount Auburn St
Suite 505
Cambridge, MA 02138-5600
Mailing address
20 Guest St Ste 225
Brighton, MA 02135-2065
Phone (617) 738-8642
Other practice location 1
20 Guest St Ste 225
Brighton, MA 02135-2065
Phone (617) 738-8642
Other identifiers 1
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 3116956 | Medicaid | MA |
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Enrolled in MA
- Eligible to order & refer
- Part B services: Yes
- Medical equipment: Yes
- Home health: Yes
- Power mobility devices: Yes
- Hospice: Yes
Enrollment records 1
Care Compare profile
Medicare Care Compare- Specialty
- Orthopedic Surgery
- Education
- Warren Alpert Medical School of Brown University, 1988
- Medicare assignment
- Accepts the Medicare-approved amount as payment in full
- Group practices
Practice addresses (Care Compare)
1563 Mass Ave
Cambridge, MA 02138-2903
Phone (617) 495-4414
300 Mount Auburn St
Suite 505
Cambridge, MA 02138-5665
Phone (617) 491-6766
75 Mount Auburn St
Cambridge, MA 02138-4960
Phone (617) 496-8700
Hospital & facility affiliations
- Mount Auburn Hospital
- Spaulding Rehabilitation Hospital
Procedures performed for Medicare patients
| Procedure | Number of procedures |
|---|---|
| Lower limb (leg) arthroscopy (minimally invasive joint repair) | 25 |
| Upper limb (arm) arthroscopy (minimally invasive joint repair) | 80 |
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
- Credentials
- Doctor of Medicine
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| 74009 | MA | MD | Sports Medicine (Orthopaedic Surgery) Physician |
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| Boston Orthopaedic and Spine LLC | Orthopaedic Surgery | Current | Accepting new patients |
| Pro Sports Orthopedics, Inc | Orthopaedic Surgery | Current | Accepting new patients |
| President & Fellows of Harvard College | Current | Accepting new patients | |
| President and Fellows of Harvard College | Current | Accepting new patients | |
| Harvard Medical Faculty Phys at Beth Israel Deaconess Med Ctr Inc | Past | Accepting new patients |
Locations
188 Longwood Ave
Boston, MA 02115
Phone (617) 432-1434
20 Guest St
Ste 225
Brighton, MA 02135
Phone (617) 586-1900
75 Mount Auburn St
#H
Cambridge, MA 02138
Phone (617) 495-4414
300 Mount Auburn St
Ste 505
Cambridge, MA 02138
Phone (617) 491-6766
Interoperability endpoints
- jkarlson507142@direct.bilh.masshiway.net
- james.karlson.1@14781.direct.athenahealth.com
Organizations & group practices 5
Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.
-
- Orthopaedic Surgery Physician
- Brighton, MA
- NPI 1619507043
-
- Multi-Specialty Clinic/Center
- Cambridge, MA
- NPI 1952366312
-
- General Practice Dentistry
- Boston, MA
- NPI 1972761807
-
- Orthopaedic Surgery Physician
- Brighton, MA
- NPI 1396083937
-
- Surgery Physician
- Boston, MA
- NPI 1720037385
Hospital & facility affiliations 2
Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.
-
- General Acute Care Hospital
- Cambridge, MA
- NPI 1689670259
-
- Rehabilitation Hospital
- Charlestown, MA
- NPI 1780600825
Inpatient rehabilitation facility
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1129075200000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1565136000000",
"number": "1114915261",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "20 GUEST ST STE 225",
"city": "BRIGHTON",
"state": "MA",
"postal_code": "021352065",
"telephone_number": "617-738-8642",
"fax_number": "617-202-4172"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "300 MOUNT AUBURN ST",
"address_2": "SUITE 505",
"city": "CAMBRIDGE",
"state": "MA",
"postal_code": "021385600",
"telephone_number": "617-491-6766",
"fax_number": "617-491-2552"
}
],
"practiceLocations": [
{
"address_1": "20 Guest St Ste 225",
"address_purpose": "LOCATION",
"city": "Brighton",
"state": "MA",
"postal_code": "021352065",
"country_code": "US",
"telephone_number": "617-738-8642",
"fax_number": "617-202-4172",
"country_name": "United States",
"address_type": "DOM"
}
],
"basic": {
"last_name": "KARLSON",
"first_name": "JAMES",
"middle_name": "ALLAN",
"credential": "MD",
"sole_proprietor": "NO",
"sex": "M",
"enumeration_date": "2005-10-12",
"last_updated": "2019-08-07",
"status": "A"
},
"taxonomies": [
{
"code": "207XX0005X",
"taxonomy_group": "",
"desc": "Orthopaedic Surgery, Sports Medicine",
"state": "MA",
"license": "74009",
"primary": true
}
],
"identifiers": [
{
"code": "05",
"desc": "MEDICAID",
"issuer": null,
"identifier": "3116956",
"state": "MA"
}
],
"endpoints": [],
"other_names": []
}
Other providers in Cambridge, MA
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Aug 7, 2019; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
- Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
- Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.