James Allan Karlson, MD - Medicare Orthopedic Surgery in Cambridge, MA

James Allan Karlson, MD is a medicare enrolled "Orthopaedic Surgery - Sports Medicine" physician in Cambridge, Massachusetts. He went to Warren Alpert Medical School Of Brown University and graduated in 1988 and has 36 years of diverse experience with area of expertise as Orthopedic Surgery. He is a member of the group practice President And Fellows Of Harvard College, Boston Orthopaedic And Spine Llc and his current practice location is 300 Mount Auburn St, Suite 505, Cambridge, Massachusetts. You can reach out to his office (for appointments etc.) via phone at (617) 491-6766.

James Allan Karlson is licensed to practice in Massachusetts (license number 74009) and he also participates in the medicare program. He accepts medicare assignments (which means he accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and his NPI Number is 1114915261.

Contact Information

James Allan Karlson, MD
300 Mount Auburn St, Suite 505,
Cambridge, MA 02138-5600
(617) 491-6766
(617) 491-2552

Map and Direction




Physician's Profile

Full NameJames Allan Karlson
GenderMale
SpecialityOrthopedic Surgery
Experience36 Years
Location300 Mount Auburn St, Cambridge, Massachusetts
Accepts Medicare AssignmentsYes. He accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • James Allan Karlson attended and graduated from Warren Alpert Medical School Of Brown University in 1988
  NPI Data:
  • NPI Number: 1114915261
  • Provider Enumeration Date: 10/12/2005
  • Last Update Date: 08/07/2019
  Medicare PECOS Information:
  • PECOS PAC ID: 4981699485
  • Enrollment ID: I20040415000400

Medical Identifiers

Medical identifiers for James Allan Karlson such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1114915261NPI-NPPES
3116956MedicaidMA

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207XX0005XOrthopaedic Surgery - Sports Medicine 74009 (Massachusetts)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Mount Auburn HospitalCambridge, MAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
President And Fellows Of Harvard College206230389493
Boston Orthopaedic And Spine Llc347698390918

Medicare Reassignments

Some practitioners may not bill the customers directly but medicare billing happens through clinics / group practice / hospitals where the provider works. Medicare reassignment of benefits is a mechanism by which practitioners allow third parties to bill and receive payment for medicare services performed by them. James Allan Karlson allows following entities to bill medicare on his behalf.
Entity NamePresident & Fellows Of Harvard College
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1952366312
PECOS PAC ID: 2062303894
Enrollment ID: O20040322001750
Entity NamePro Sports Orthopedics Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1518971811
PECOS PAC ID: 1153394796
Enrollment ID: O20040812001584
Entity NameBoston Orthopaedic And Spine Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1619507043
PECOS PAC ID: 3476983909
Enrollment ID: O20200423001231

Medicare Part D Prescriber Enrollment

Any physician or other eligible professional who prescribes Part D drugs must either enroll in the Medicare program or opt out in order to prescribe drugs to their patients with Part D prescription drug benefit plans. James Allan Karlson is enrolled with medicare and thus, if eligible, can prescribe medicare part D drugs to patients with medicare part D benefits.

Mailing Address and Practice Location

Mailing AddressPractice Location Address
James Allan Karlson, MD
20 Guest St Ste 225,
Brighton, MA 02135-2065

Ph: (617) 738-8642
James Allan Karlson, MD
300 Mount Auburn St, Suite 505,
Cambridge, MA 02138-5600

Ph: (617) 491-6766

Reviews and Comments


Orthopaedic Surgery Doctors in Cambridge, MA

Robert Ernst Miegel, MD
Orthopedic Surgery
Medicare: Medicare Enrolled
Practice Location: 300 Mount Auburn St, Ste 505, Cambridge, MA 02138
Phone: 617-491-6766    Fax: 617-491-2552
Debra A Mulley, M.D.
Orthopedic Surgery
Medicare: Accepting Medicare Assignments
Practice Location: 1493 Cambridge Street., Cambridge Health Alliance, Cambridge, MA 02139
Phone: 617-665-1566    
Josef B Simon, MD
Orthopedic Surgery
Medicare: Accepting Medicare Assignments
Practice Location: 300 Mount Auburn St, Suite 505, Cambridge, MA 02138
Phone: 617-491-6766    Fax: 617-491-2552
Ronald Henry Geiger, MD
Orthopedic Surgery
Medicare: Not Enrolled in Medicare
Practice Location: 300 Mount Auburn St, Ste 505, Cambridge, MA 02138
Phone: 617-491-6766    Fax: 617-491-2552
William Lipman, MD
Orthopedic Surgery
Medicare: Accepting Medicare Assignments
Practice Location: 1493 Cambridge St, Orthopaedics, Cambridge, MA 02139
Phone: 617-591-4600    
Thomas F Burke Jr., MD
Orthopedic Surgery
Medicare: Accepting Medicare Assignments
Practice Location: 300 Mount Auburn St, Suite 505, Cambridge, MA 02138
Phone: 617-491-6766    Fax: 617-491-2552

Medicare Program: Medicare is a federal government program which provides health insurance to people who are 65 or older. This program also covers certain younger people with disabilities (who receive Social Security Disability Insurance - SSDI), and people with End-Stage Renal Disease (permanent kidney failure requiring dialysis or a transplant, sometimes called ESRD.

Medicare Assignment: Assignment means that your doctor, provider, or supplier agrees (or is required by law) to accept the Medicare-approved amount as full payment for covered services. Most doctors, providers, and suppliers accept assignment, but you should always check to make sure. Participating providers have signed an agreement to accept assignment for all Medicare-covered services.

NPI Number: The National Provider Identifier (NPI) is a unique identification number for covered health care providers. The NPI must be used in lieu of legacy provider identifiers in the HIPAA standards transactions. Covered health care providers and all health plans and health care clearinghouses must use the NPIs in the administrative and financial transactions adopted under HIPAA (Health Insurance Portability and Accountability Act).

Our Data: Information on www.medicarelist.com is built using data sources published by Centers for Medicare & Medicaid Services (CMS) under Freedom of Information Act (FOIA). The information disclosed on the NPI Registry are FOIA-disclosable and are required to be disclosed under the FOIA and the eFOIA amendments to the FOIA. There is no way to 'opt out' or 'suppress' the NPPES record data for health care providers with active NPIs.