Individual provider Active NPI

James Allan Karlson, MD

  • Sports Medicine (Orthopaedic Surgery) Physician
  • Cambridge, MA
National Provider Identifier
1114915261
Registry record updated Aug 7, 2019
On this page

Key facts

NPPES NPI Registry
Primary specialty
Sports Medicine (Orthopaedic Surgery) PhysicianTaxonomy code 207XX0005X
License
74009 Issued in MA
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

Updated by the provider on Aug 7, 2019

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
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

IdentifierTypeStateIssuer
3116956MedicaidMA

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
Green means eligible to order or refer.

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20040415000400 MA Practitioner - Orthopedic Surgery 4981699485 Reassigns benefits to 2 organizations

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
President and Fellows of Harvard CollegeGroup PAC ID 2062303894, 94 clinicians
Boston Orthopaedic and Spine LLCGroup PAC ID 3476983909, 20 clinicians

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 Hospital, Cambridge, MA, CCN 220002
  • Spaulding Rehabilitation Hospital Inpatient rehabilitation facility, Charlestown, MA, CCN 223034

Procedures performed for Medicare patients

ProcedureNumber 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

LicenseStateTypeSpecialty
74009MAMDSports Medicine (Orthopaedic Surgery) Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Boston Orthopaedic and Spine LLC Orthopaedic Surgery CurrentSince Apr 1, 2020 Accepting new patients
Pro Sports Orthopedics, Inc Orthopaedic Surgery Current Accepting new patients
President & Fellows of Harvard College CurrentSince May 23, 2010 Accepting new patients
President and Fellows of Harvard College CurrentSince May 23, 2010 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

  • Direct secure messaging: jkarlson507142@direct.bilh.masshiway.net
  • Direct secure messaging: 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.

Hospital & facility affiliations 2

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

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

Verify at the official NPI Registry.