Individual provider Active NPI

Katharine Esselen, MD

  • Obstetrics & Gynecology Physician
  • Boston, MA
National Provider Identifier
1518129014
Registry record updated Jun 26, 2008
On this page

Key facts

NPPES NPI Registry
Primary specialty
Obstetrics & Gynecology PhysicianTaxonomy code 207V00000X
License
L-236618 Issued in MA
Practice address
Massachusetts General Hospital
55 Fruit Street
Boston, MA 02114
Phone
(617) 724-9410
NPI assigned
Jun 26, 2008
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Jun 26, 2008

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Obstetrics & Gynecology Physician 207V00000X L-236618 MA Primary

Addresses

Primary practice location

Massachusetts General Hospital
55 Fruit Street
Boston, MA 02114

Mailing address

Massachusetts General Hospital
55 Fruit Street
Boston, MA 02114
Phone (617) 724-9410

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
I20150924000352 MA Practitioner - Obstetrics/Gynecology 3678730009 Reassigns benefits to 6 organizations

Care Compare profile

Medicare Care Compare
Specialty
Obstetrics/Gynecology
Education
Tufts University School of Medicine, 2008
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Harvard Medical Faculty Phys at Beth Israel Deaconess Med Ctr IncGroup PAC ID 4486567104, shared by 12 NPIs, 1,693 clinicians

Practice addresses (Care Compare)

330 Brookline Ave
Boston, MA 02215-5400
Phone (617) 754-8612

Hospital & facility affiliations

  • Beth Israel Deaconess Medical Center Hospital, Boston, MA, CCN 220086

Procedures performed for Medicare patients

ProcedureNumber of procedures
Colonoscopy1-10
Removal of the uterus20

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
L-236618MAMDObstetrics & Gynecology Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Dana-Farber Cancer Institute, Inc. CurrentSince Dec 31, 2025 Accepting new patients
Harvard Medical Faculty Phys at Beth Israel Deaconess Med Ctr Inc Current Accepting new patients
Beth Israel Deaconess Medical Center, Inc. CurrentSince Jul 1, 2015 Accepting new patients
Harvard Medical Faculty Phys at Beth Israel Deaconess Med Ctr Inc CurrentSince Aug 1, 2025 Accepting new patients
Dana-Farber Cancer Institute, Inc. CurrentSince Dec 31, 2025 Accepting new patients
Mount Auburn Professional Services Inc Obstetrics & Gynecology CurrentSince May 1, 2017 Accepting new patients
Harvard Medical Faculty Phys at Beth Israel Deaconess Med Ctr Inc CurrentSince Jul 1, 2015 Accepting new patients
Harvard Medical Faculty Phys at Beth Israel Deaconess Med Ctr Inc Obstetrics & Gynecology CurrentSince Jul 1, 2015 Accepting new patients
Dana-Farber Cancer Institute, Inc. CurrentSince Dec 31, 2025 Accepting new patients
Mt Auburn Professional Services Obstetrics & Gynecology CurrentSince May 1, 2017 Accepting new patients
Beth Israel Deaconess Medical Center, Inc. CurrentSince Jul 1, 2015 Accepting new patients
Harvard Medical Faculty Phys at Beth Israel Deaconess Med Ctr Inc Past Accepting new patients

Locations

330 Brookline Ave
Fl 3
Boston, MA 02215
Phone (617) 632-9513

450 Brookline Ave
Boston, MA 02215
Phone (508) 478-2061

330 Brookline Ave
Boston, MA 02215
Phone (617) 667-2000

55 Fruit St
Boston, MA 02114

330 Mount Auburn St
Cambridge, MA 02138
Phone (617) 499-5054

200 Boylston St
Fl 4
Chestnut Hill, MA 02467
Phone (617) 278-8660

57 Bedford St
Ste 130
Lexington, MA 02420
Phone (781) 484-7500

1 University Ave
Westwood, MA 02090
Phone (617) 754-1021

Interoperability endpoints

  • Direct secure messaging: katharine.esselen.1@86.direct.athenahealth.com
  • Direct secure messaging: kesselen255418@direct.bilh.masshiway.net
  • FHIR API: https://api.platform.athenahealth.com/86/brand/1/csg/1/fhir/r4

Organizations & group practices 12

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 1

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": "1214438400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1214438400000",
    "number": "1518129014",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "MASSACHUSETTS GENERAL HOSPITAL",
            "address_2": "55 FRUIT STREET",
            "city": "BOSTON",
            "state": "MA",
            "postal_code": "02114",
            "telephone_number": "617-724-9410"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "MASSACHUSETTS GENERAL HOSPITAL",
            "address_2": "55 FRUIT STREET",
            "city": "BOSTON",
            "state": "MA",
            "postal_code": "02114",
            "telephone_number": "617-724-9410"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "ESSELEN",
        "first_name": "KATHARINE",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2008-06-26",
        "last_updated": "2008-06-26",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207V00000X",
            "taxonomy_group": "",
            "desc": "Obstetrics & Gynecology",
            "state": "MA",
            "license": "L-236618",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Boston, MA

Sources for this page

Verify at the official NPI Registry.