Jennifer A Mulligan, MD

Primary specialty

Obesity Medicine (Family Medicine) PhysicianTaxonomy code 207QB0002X

License

334136 Issued in NY

Practice address

55 Fruit St
Boston, MA 02114-2696

Phone

(617) 726-2000

NPI assigned

Mar 27, 2019

Last updated

Jan 27, 2026By the provider in NPPES

Sex

Female

Sole proprietor

Yes

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

Specialties & licenses 5

Addresses

Other names 1

• Yoon Ji Ahn Former name

Medicare fee-for-service enrollment

Enrolled in MA, NY2 enrollments

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 2

Specialty

Family Practice

Education

Medical College of Georgia School of Medicine, 2019

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Telehealth

Offers telehealth services

Group practices

Nuvance Health Medical Practice PCGroup PAC ID 1658468442, 578 clinicians

Massachusetts General Physicians Organization IncGroup PAC ID 2466365820, 3,494 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• North Shore Medical Center - Hospital, Salem, MA, CCN 220035

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

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

• Massachusetts General Physicians Organization Inc

  • Dermatology Physician
  • Boston, MA
  • NPI 1801874573
  Medicare reassignment Care Compare group NPD
• Nuvance Health Medical Practice PC

  • Internal Medicine Physician
  • Poughkeepsie, NY
  • NPI 1437358033
  Medicare reassignment Care Compare group NPD
• The General Hospital Corporation

  • General Acute Care Hospital
  • Boston, MA
  • NPI 1023049236
  Medicare reassignment NPD
• Health Quest Medical Practice, PC

  • Diagnostic Radiology Physician
  • Kingston, NY
  • NPI 1558906610
  NPD

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

• North Shore Medical Center, Inc.

  dba Salem Hospital

  • General Acute Care Hospital
  • Salem, MA
  • NPI 1730121633
  Care Compare affiliation

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

{
    "created_epoch": "1553644800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1769472000000",
    "number": "1700347242",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "50 STANIFORD ST STE 430",
            "city": "BOSTON",
            "state": "MA",
            "postal_code": "021142541",
            "telephone_number": "617-726-2000"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "55 FRUIT ST",
            "city": "BOSTON",
            "state": "MA",
            "postal_code": "021142696",
            "telephone_number": "617-726-2000"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "MULLIGAN",
        "first_name": "JENNIFER",
        "middle_name": "A",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "YES",
        "sex": "F",
        "enumeration_date": "2019-03-27",
        "last_updated": "2026-01-27",
        "certification_date": "2026-01-27",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "390200000X",
            "taxonomy_group": "",
            "desc": "Student in an Organized Health Care Education/Training Program",
            "state": "NU",
            "license": null,
            "primary": false
        },
        {
            "code": "207Q00000X",
            "taxonomy_group": "",
            "desc": "Family Medicine",
            "state": "IL",
            "license": "125.074597",
            "primary": false
        },
        {
            "code": "207RE0101X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Endocrinology, Diabetes & Metabolism",
            "state": "MA",
            "license": "1015157",
            "primary": false
        },
        {
            "code": "207QB0002X",
            "taxonomy_group": "",
            "desc": "Family Medicine, Obesity Medicine",
            "state": "NY",
            "license": "334136",
            "primary": true
        },
        {
            "code": "2083B0002X",
            "taxonomy_group": "",
            "desc": "Preventive Medicine, Obesity Medicine",
            "state": "CT",
            "license": "80087",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": [
        {
            "first_name": "YOON JI",
            "last_name": "AHN",
            "code": "1",
            "type": "Former Name"
        }
    ]
}

• Rebecca Muller, PA-C
• Rebecca Muller, DMD
• Albert George Mulley Jr., MD
• Genevieve Mulligan
• Janet Mulligan, RN
• Maura Mulligan
• Nicholas Joseph Mulligan, PA
• Janet Marie Mullin-Saucedo
• Andrea Rae Mullin
• Caroline S Mullin, M.D.

• Obesity Medicine (Family Medicine) Physician in Boston, MA
• Providers in Boston, MA by specialty
• Obesity Medicine (Family Medicine) Physician in Massachusetts

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jan 27, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.