Individual provider Active NPI

Frances Josephine Hayes, MD

  • Internal Medicine Physician
  • Boston, MA
National Provider Identifier
1528058856
Registry record updated Jul 13, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Internal Medicine PhysicianTaxonomy code 207R00000X
License
204397 Issued in MA
Practice address
55 Fruit St
BHX 511
Boston, MA 02114-2621
Phone
(617) 726-8433
Fax
(617) 726-5357
NPI assigned
Oct 27, 2005
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Jul 13, 2026

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Internal Medicine Physician 207R00000X 204397 MA Primary
Reproductive Endocrinology Physician 207VE0102X 204397 MA

Addresses

Primary practice location

55 Fruit St
BHX 511
Boston, MA 02114-2621

Mailing address

PO Box 9142
Charlestown, MA 02129-9142
Phone (617) 724-0287

Other identifiers 3

IdentifierTypeStateIssuer
3209326MedicaidMA
J21252OtherMABCBS OF MA
000584OtherMATUFTS HEALTH PLAN

Medicare participation

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

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20130128000428 MA Practitioner - Endocrinology 3476707464 Reassigns benefits to 2 organizations

Care Compare profile

Medicare Care Compare
Specialty
Endocrinology
Education
Other, 1988
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Telehealth
Offers telehealth services
Group practices
Massachusetts General Physicians Organization IncGroup PAC ID 2466365820, 3,494 clinicians
The General Hospital CorporationGroup PAC ID 6507803806, 1,275 clinicians

Practice addresses (Care Compare)

50 Staniford St
Boston, MA 02114-2517

55 Fruit St
Boston, MA 02114-2621
Phone (617) 726-2000

55 Fruit St
Boston, MA 02114-2696
Phone (617) 724-0287

Hospital & facility affiliations

  • Massachusetts General Hospital Hospital, Boston, MA, CCN 220071
  • North Shore Medical Center - Hospital, Salem, MA, CCN 220035
  • Brigham and Women'S Hospital Hospital, Boston, MA, CCN 220110
  • Newton-Wellesley Hospital Hospital, Newton, MA, CCN 220101
  • Wentworth-Douglass Hospital Hospital, Dover, NH, CCN 300018

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
204397MAMDInternal Medicine Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Massachusetts General Physicians Organization Inc Internal Medicine CurrentSince Dec 13, 2012 Accepting new patients
The General Hospital Corporation CurrentSince Dec 13, 2012 Accepting new patients
General Hospital Corp Current Accepting new patients

Locations

55 Fruit St
Boston, MA 02114

55 Fruit St
#2
Boston, MA 02114
Phone (617) 726-2967

55 Fruit St
#511
Boston, MA 02114
Phone (617) 726-8433

Interoperability endpoints

  • Direct secure messaging: hayes.frances.mgh@direct.partners.masshiway.net

Organizations & group practices 3

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 6

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

NPI Registry JSON

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1130371200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1528058856",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 9142",
            "city": "CHARLESTOWN",
            "state": "MA",
            "postal_code": "021299142",
            "telephone_number": "617-724-0287",
            "fax_number": "617-726-2894"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "55 FRUIT ST",
            "address_2": "BHX 511",
            "city": "BOSTON",
            "state": "MA",
            "postal_code": "021142621",
            "telephone_number": "617-726-8433",
            "fax_number": "617-726-5357"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "HAYES",
        "first_name": "FRANCES",
        "middle_name": "JOSEPHINE",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2005-10-27",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "MA",
            "license": "204397",
            "primary": true
        },
        {
            "code": "207VE0102X",
            "taxonomy_group": "",
            "desc": "Obstetrics & Gynecology, Reproductive Endocrinology",
            "state": "MA",
            "license": "204397",
            "primary": false
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "3209326",
            "state": "MA"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "BCBS OF MA",
            "identifier": "J21252",
            "state": "MA"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "TUFTS HEALTH PLAN",
            "identifier": "000584",
            "state": "MA"
        }
    ],
    "endpoints": [],
    "other_names": []
}

Other providers in Boston, MA

Sources for this page

Verify at the official NPI Registry.