Dr Li Tso, MD - Medicare Internal Medicine in Boston, MA

Dr Li Tso, MD is a medicare enrolled "Internal Medicine" physician in Boston, Massachusetts. He went to State University Of New York At Stony Brook, School Of Medicine and graduated in 1990 and has 34 years of diverse experience with area of expertise as Internal Medicine. He is a member of the group practice Karen T. Isselbacher, Md Llc and his current practice location is 15 Parkman St, Bulfinch Medical Group, Wang 535, Boston, Massachusetts. You can reach out to his office (for appointments etc.) via phone at (617) 724-6640.

Dr Li Tso is licensed to practice in Massachusetts (license number 75440) 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 1467443150.

Contact Information

Dr Li Tso, MD
15 Parkman St, Bulfinch Medical Group, Wang 535,
Boston, MA 02114-3117
(617) 724-6640
(617) 724-6632

Map and Direction




Physician's Profile

Full NameDr Li Tso
GenderMale
SpecialityInternal Medicine
Experience34 Years
Location15 Parkman St, Boston, 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:
  • Dr Li Tso attended and graduated from State University Of New York At Stony Brook, School Of Medicine in 1990
  NPI Data:
  • NPI Number: 1467443150
  • Provider Enumeration Date: 11/02/2005
  • Last Update Date: 02/14/2014
  Medicare PECOS Information:
  • PECOS PAC ID: 4284614819
  • Enrollment ID: I20040723000096

Medical Identifiers

Medical identifiers for Dr Li Tso such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1467443150NPI-NPPES
727225OtherMATUFTS HEALTH PLAN
3091058MedicaidMA
J12245OtherMABCBS MA

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207R00000XInternal Medicine 75440 (Massachusetts)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Partners Healthcare At Home - Home CareWaltham, MAHome health agency
Newton-wellesley HospitalNewton, MAHospital
Brigham And Women's HospitalBoston, MAHospital
Massachusetts General HospitalBoston, MAHospital
North Shore Medical Center -Salem, MAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Karen T. Isselbacher, Md Llc10525718742

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. Dr Li Tso allows following entities to bill medicare on his behalf.
Entity NameMassachusetts General Physicians Organization Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1801874573
PECOS PAC ID: 2466365820
Enrollment ID: O20031111000434
Entity NameThe General Hospital Corporation
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1023049236
PECOS PAC ID: 6507803806
Enrollment ID: O20080313000351
Entity NameKaren T. Isselbacher, Md Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1053680108
PECOS PAC ID: 1052571874
Enrollment ID: O20120331000047

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. Dr Li Tso 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
Dr Li Tso, MD
Po Box 9142, Mass General Physician Organization,
Charlestown, MA 02129-9142

Ph: (617) 724-6670
Dr Li Tso, MD
15 Parkman St, Bulfinch Medical Group, Wang 535,
Boston, MA 02114-3117

Ph: (617) 724-6640

Reviews and Comments


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Phone: 617-414-4376    Fax: 617-414-4676

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.