Helen Keizhen Lyo, - Medicare Internal Medicine in Boston, MA

Helen Keizhen Lyo, is a medicare enrolled "Internal Medicine" physician in Boston, Massachusetts. Her current practice location is 801 Massachusetts Ave, Crosstown 2, Boston, Massachusetts. You can reach out to her office (for appointments etc.) via phone at (617) 414-7399.

Helen Keizhen Lyo is licensed to practice in Massachusetts (license number 291273) and she also participates in the medicare program. She does not accept medicare assignments directly but she may accept medicare through third-party (refer to Reassignment section below) and may also prescribe medicare part D drugs. Her NPI Number is 1609336676.

Contact Information

Helen Keizhen Lyo,
801 Massachusetts Ave, Crosstown 2,
Boston, MA 02118-0211
(617) 414-7399
(617) 414-4676

Map and Direction




Physician's Profile

Full NameHelen Keizhen Lyo
GenderFemale
SpecialityInternal Medicine
Location801 Massachusetts Ave, Boston, Massachusetts
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1609336676
  • Provider Enumeration Date: 03/25/2019
  • Last Update Date: 05/17/2022
  Medicare PECOS Information:
  • PECOS PAC ID: 5092041418
  • Enrollment ID: I20220519001089

Medical Identifiers

Medical identifiers for Helen Keizhen Lyo such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1609336676NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207R00000XInternal Medicine 291273 (Massachusetts)Primary

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. Helen Keizhen Lyo allows following entities to bill medicare on her behalf.
Entity NameEvans Medical Foundation Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1912954124
PECOS PAC ID: 7416946546
Enrollment ID: O20040512000397

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. Helen Keizhen Lyo 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
Helen Keizhen Lyo,
801 Albany St Fl Ground,
Boston, MA 02119-2560

Ph: () -
Helen Keizhen Lyo,
801 Massachusetts Ave, Crosstown 2,
Boston, MA 02118-0211

Ph: (617) 414-7399

Reviews and Comments


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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.