David Hyungjun Yi, MD - Medicare Ophthalmology in Chelmsford, MA

David Hyungjun Yi, MD is a medicare enrolled "Ophthalmology" physician in Chelmsford, Massachusetts. He went to Baylor College Of Medicine and graduated in 1997 and has 27 years of diverse experience with area of expertise as Ophthalmology. He is a member of the group practice Massachusetts Eye Associates Pc and his current practice location is 19 Village Sq, Chelmsford, Massachusetts. You can reach out to his office (for appointments etc.) via phone at (978) 256-5600.

David Hyungjun Yi is licensed to practice in Massachusetts (license number 209741) 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 1003808197.

Contact Information

David Hyungjun Yi, MD
19 Village Sq,
Chelmsford, MA 01824-2712
(978) 256-5600
(978) 703-0250

Map and Direction




Physician's Profile

Full NameDavid Hyungjun Yi
GenderMale
SpecialityOphthalmology
Experience27 Years
Location19 Village Sq, Chelmsford, 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:
  • David Hyungjun Yi attended and graduated from Baylor College Of Medicine in 1997
  NPI Data:
  • NPI Number: 1003808197
  • Provider Enumeration Date: 08/16/2005
  • Last Update Date: 09/29/2011
  Medicare PECOS Information:
  • PECOS PAC ID: 6800868464
  • Enrollment ID: I20040812000910

Medical Identifiers

Medical identifiers for David Hyungjun Yi such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1003808197NPI-NPPES
0138479MedicaidMA

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207W00000XOphthalmology 209741 (Massachusetts)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Lowell General HospitalLowell, MAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Massachusetts Eye Associates Pc347651262513

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. David Hyungjun Yi allows following entities to bill medicare on his behalf.
Entity NameMassachusetts Eye Associates Pc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1912999095
PECOS PAC ID: 3476512625
Enrollment ID: O20041005000340

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. David Hyungjun Yi 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
David Hyungjun Yi, MD
19 Village Sq,
Chelmsford, MA 01824-2712

Ph: (978) 256-5600
David Hyungjun Yi, MD
19 Village Sq,
Chelmsford, MA 01824-2712

Ph: (978) 256-5600

Reviews and Comments


Ophthalmology Doctors in Chelmsford, MA

Stephen Joseph Poor Iii, MD
Ophthalmology
Medicare: Not Enrolled in Medicare
Practice Location: 17 Village Sq, Chelmsford, MA 01824
Phone: 978-250-8001    Fax: 978-250-4142
David George Perkins, MD
Ophthalmology
Medicare: Not Enrolled in Medicare
Practice Location: 19 Village Sq, Chelmsford, MA 01824
Phone: 978-256-5600    Fax: 978-703-0250
David Mears Tracy, MD
Ophthalmology
Medicare: Not Enrolled in Medicare
Practice Location: 19 Village Sq, Chelmsford, MA 01824
Phone: 978-256-5600    Fax: 978-703-0250
Dr. Cecily Elaine Hamill, MD, PHD
Ophthalmology
Medicare: Accepting Medicare Assignments
Practice Location: 19 Village Sq, Chelmsford, MA 01824
Phone: 978-256-5600    Fax: 978-703-0250
James Kim, M.D., PH.D.
Ophthalmology
Medicare: Accepting Medicare Assignments
Practice Location: 19 Village Square, Chelmsford, MA 01824
Phone: 978-256-5600    Fax: 978-703-0250
Glen Alan Bolliger, MD
Ophthalmology
Medicare: Accepting Medicare Assignments
Practice Location: 19 Village Sq, Chelmsford, MA 01824
Phone: 978-256-5600    Fax: 978-703-0250

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.