Dr Diane Sun, MD - Medicare Internal Medicine in Boston, MA

Dr Diane Sun, MD is a medicare enrolled "Internal Medicine" physician in Boston, Massachusetts. She went to Drexel University College Of Medicine and graduated in 2018 and has 6 years of diverse experience with area of expertise as Internal Medicine. She is a member of the group practice Pratt Medical Group Inc and her current practice location is 800 Washington St, Boston, Massachusetts. You can reach out to her office (for appointments etc.) via phone at (617) 636-5000.

Dr Diane Sun is licensed to practice in Massachusetts (license number 276319) and she also participates in the medicare program. She accepts medicare assignments (which means she accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and her NPI Number is 1245721018.

Contact Information

Dr Diane Sun, MD
800 Washington St,
Boston, MA 02111-1552
(617) 636-5000
Not Available

Map and Direction




Physician's Profile

Full NameDr Diane Sun
GenderFemale
SpecialityInternal Medicine
Experience6 Years
Location800 Washington St, Boston, Massachusetts
Accepts Medicare AssignmentsYes. She accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Dr Diane Sun attended and graduated from Drexel University College Of Medicine in 2018
  NPI Data:
  • NPI Number: 1245721018
  • Provider Enumeration Date: 05/28/2018
  • Last Update Date: 05/28/2018
  Medicare PECOS Information:
  • PECOS PAC ID: 4486063237
  • Enrollment ID: I20210506001564

Medical Identifiers

Medical identifiers for Dr Diane Sun such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1245721018NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207R00000XInternal Medicine 276319 (Massachusetts)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Tufts Medical CenterBoston, MAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Pratt Medical Group Inc3375515661259

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 Diane Sun allows following entities to bill medicare on her behalf.
Entity NamePratt Medical Group Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1275570319
PECOS PAC ID: 3375515661
Enrollment ID: O20040807000255

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 Diane Sun 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 Diane Sun, MD
110 Newbury St Apt 4r,
Boston, MA 02116-2945

Ph: (978) 397-2416
Dr Diane Sun, MD
800 Washington St,
Boston, MA 02111-1552

Ph: (617) 636-5000

Reviews and Comments


Internal Medicine Doctors in Boston, MA

Kaitlyn My-tu Lam, MBBS
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Alaka Ray, M.D.
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Meghan E Sise, M.D.
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Aaron Dickstein, M.D.
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Practice Location: 800 Washington St, Box 233, Boston, MA 02111
Phone: 617-636-5883    Fax: 617-636-9292
Dr. Felicia Elizabeth Patch, MD
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 801 Massachusetts Ave, Crosstown 2, Boston, MA 02118
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.