NPIMap

Individual provider Active NPI

Jenny Ying Xin Sun, M.D.

  • Internal Medicine Physician
  • Quincy, MA
National Provider Identifier
1902035280
Registry record updated Aug 17, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Internal Medicine PhysicianTaxonomy code 207R00000X
License
230202 Issued in MA
Practice address
1250 Hancock St
Internal Medicine
Quincy, MA 02169-4339
Phone
(617) 774-0840
Fax
(617) 774-0882
NPI assigned
Jul 8, 2009
Sex
Female
Sole proprietor
No

Organizations & group practices 11

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.

Hospital & facility affiliations 7

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

Care Compare profile

Medicare Care Compare
Specialty
Internal Medicine
Education
Harvard Medical School, 2003
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Telehealth
Offers telehealth services
Group practices
Atrius Health Inc 1,214 clinicians
Mass General Brigham Community Physicians Inc 430 clinicians

Practice addresses (Care Compare)

1 Lyons St
Dedham, MA 02026-5599
Phone (781) 329-1400

100 2ND Ave
Needham, MA 02494-2809
Phone (781) 726-4800

100 Brigham Way
Westwood, MA 02090-2445
Phone (877) 937-8128

1250 Hancock St
Quincy, MA 02169-4339
Phone (617) 740-0600

133 Brookline Ave
Boston, MA 02215-3904
Phone (617) 421-1000

Hospital & facility affiliations

  • Mass General Brigham Home Care, Inc Home health agency, Newton, MA, CCN 227207
  • Brigham and Women'S Hospital Hospital, Boston, MA, CCN 220110
  • Brigham and Women Faulkner Hospital Hospital, Jamaica Plain, MA, CCN 220119
  • Newton-Wellesley Hospital Hospital, Newton, MA, CCN 220101
  • Massachusetts General Hospital Hospital, Boston, MA, CCN 220071
  • South Shore Hospital Hospital, South Weymouth, MA, CCN 220100

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in MA
Eligible to order & refer
  • Part B services
  • Medical equipment
  • Home health
  • Power mobility devices
  • Hospice
Green means eligible to order or refer.

Medicare enrollment records 1

Medicare enrollment files
Enrollment IDStateProvider typePAC IDDetails
I20130206000012 MA Practitioner - Internal Medicine 3971757600 Reassigns benefits to 2 organizations

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Doctor of Medicine

Practice roles

OrganizationSpecialtyStatusNew patients
Atrius Health, Inc. Internal Medicine CurrentSince Jan 16, 2018 Accepting new patients
Brigham and Women'S Hospital Current Accepting new patients
Mass General Brigham Community Physicians Inc CurrentSince Oct 1, 2018 Accepting new patients
Mass General Brigham Community Physicians Inc. Internal Medicine CurrentSince Oct 1, 2018 Accepting new patients
Atrius Health, Inc. Internal Medicine Current Accepting new patients
Atrius Health, Inc. Internal Medicine Past Accepting new patients

Locations

147 Milk St
Fl 9
Boston, MA 02109
Phone (617) 559-8051

133 Brookline Ave
Boston, MA 02215
Phone (617) 421-1000

111 Grossman Dr
Braintree, MA 02184
Phone (781) 849-1000

170 Governors Ave
Medford, MA 02155
Phone (781) 306-6000

1250 Hancock St
Quincy, MA 02169
Phone (617) 774-0600

100 Brigham Way
Westwood, MA 02090
Phone (781) 471-2200

Interoperability endpoints

  • Direct secure messaging: jsunmd52401@direct.atrius.masshiway.net
  • Direct secure messaging: sun.jenny.bwh@direct.partners.masshiway.net

Specialties & licenses 1

NPPES NPI Registry
Specialty (taxonomy)CodeLicenseStatePrimary
Internal Medicine Physician 207R00000X 230202 MA Primary

Addresses

NPPES NPI Registry

Primary practice location

1250 Hancock St
Internal Medicine
Quincy, MA 02169-4339

Mailing address

1250 Hancock St
Internal Medicine
Quincy, MA 02169-4339
Phone (617) 774-0840

NPI Registry JSON

The complete NPPES record for this NPI in the NPI Registry API format, last updated by the provider on Aug 17, 2026.

{
    "created_epoch": "1247011200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1786924800000",
    "number": "1902035280",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1250 HANCOCK ST",
            "address_2": "INTERNAL MEDICINE",
            "city": "QUINCY",
            "state": "MA",
            "postal_code": "021694339",
            "telephone_number": "617-774-0840",
            "fax_number": "617-774-0882"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1250 HANCOCK ST",
            "address_2": "INTERNAL MEDICINE",
            "city": "QUINCY",
            "state": "MA",
            "postal_code": "021694339",
            "telephone_number": "617-774-0840",
            "fax_number": "617-774-0882"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "SUN",
        "first_name": "JENNY",
        "middle_name": "YING XIN",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2009-07-08",
        "last_updated": "2026-08-17",
        "certification_date": "2026-08-17",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "MA",
            "license": "230202",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Quincy, MA

Sources for this page

Verify at the official NPI Registry.