Peter Nogueira Hadar, MD, MS

Primary specialty

Epilepsy PhysicianTaxonomy code 2084E0001X

License

291110 Issued in MA

Practice address

55 Fruit St
Boston, MA 02114-2621

Phone

(617) 726-3311

NPI assigned

May 4, 2018

Sex

Male

Sole proprietor

No

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

Specialties & licenses 2

Addresses

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

Specialty

EpileptologistsAlso: Neurology

Education

Perelman School of Med at the University of Pennsylvania, 2018

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

Practice addresses (Care Compare)

Hospital & facility affiliations

• Massachusetts General Hospital Hospital, Boston, MA, CCN 220071
• North Shore Medical Center - Hospital, Salem, MA, CCN 220035
• Cooley Dickinson Hospital Inc,the Hospital, Northampton, MA, CCN 220015

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine, Master of Science

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 and National Provider Directory roles.

• Massachusetts General Physicians Organization Inc

  • Dermatology Physician
  • Boston, MA
  • NPI 1801874573

  Neurology

  Medicare reassignment Care Compare group NPD
• Brigham & Womens Physicians Organization Inc

  • Internal Medicine Physician
  • Boston, MA
  • NPI 1033535497

  Neurology

  Medicare reassignment NPD
• The General Hospital Corporation

  • General Acute Care Hospital
  • Boston, MA
  • NPI 1023049236
  Medicare reassignment NPD

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

• Cooley Dickinson Hospital Inc

  • General Acute Care Hospital
  • Northampton, MA
  • NPI 1477596310
  Care Compare affiliation
• Cooley Dickinson Hospital Inc

  • Psychiatric Hospital Unit
  • Northampton, MA
  • NPI 1871512814
  Care Compare affiliation
• North Shore Medical Center, Inc.

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

  • General Acute Care Hospital
  • Boston, MA
  • NPI 1023049236
  Care Compare affiliation

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

{
    "created_epoch": "1525392000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1762905600000",
    "number": "1922597012",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "15 PARKMAN STREET",
            "address_2": "WACC 835",
            "city": "BOSTON",
            "state": "MA",
            "postal_code": "02114",
            "telephone_number": "617-726-3311",
            "fax_number": "617-726-9250"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "55 FRUIT ST",
            "city": "BOSTON",
            "state": "MA",
            "postal_code": "021142621",
            "telephone_number": "617-726-3311"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "75 Francis St",
            "address_purpose": "LOCATION",
            "city": "Boston",
            "state": "MA",
            "postal_code": "021156110",
            "country_code": "US",
            "telephone_number": "617-732-5500",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "15 Parkman Street",
            "address_2": "WACC 835",
            "address_purpose": "LOCATION",
            "city": "Boston",
            "state": "MA",
            "postal_code": "02114",
            "country_code": "US",
            "telephone_number": "617-726-3311",
            "fax_number": "617-726-9250",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "HADAR",
        "first_name": "PETER",
        "middle_name": "NOGUEIRA",
        "name_prefix": "Dr.",
        "credential": "MD, MS",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2018-05-04",
        "last_updated": "2025-11-12",
        "certification_date": "2025-11-12",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "2084N0400X",
            "taxonomy_group": "",
            "desc": "Psychiatry & Neurology, Neurology",
            "state": "MA",
            "license": "291110",
            "primary": false
        },
        {
            "code": "2084E0001X",
            "taxonomy_group": "",
            "desc": "Psychiatry & Neurology, Epilepsy",
            "state": "MA",
            "license": "291110",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Claire Hacking, MPH, MS
• Brianne Elizabeth Hackman, M.D.
• Helen Holly Hackman, M.D.
• Amy Elizabeth Hackmann, MD
• David B Hackney, MD
• Cyrus William Hadavi, MD
• Anthony Haddad, MD
• Chia Amalia Haddad, MD
• Elissa Haddad
• Lisa Blake Haddad, M.D.

• Epilepsy Physician in Boston, MA
• Providers in Boston, MA by specialty
• Epilepsy Physician in Massachusetts

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Nov 12, 2025; 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.