Mary Theresa Brennan, CPNP

Primary specialty

Pediatric Nurse PractitionerTaxonomy code 363LP0200X

License

RN2334511 Issued in MA

Practice address

300 Longwood Ave
Boston, MA 02115-5724

Phone

(617) 355-6000

NPI assigned

Jul 1, 2024

Last updated

Mar 26, 2025By the provider in NPPES

Sex

Female

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: No

Green means eligible to order or refer.

Enrollment records 1

Specialty

Nurse Practitioner

Education

Other, 2024

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Children's Hospital Pediatric Associates, IncGroup PAC ID 3476541830, 333 clinicians

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

Credentials

Certified Pediatric Nurse Practitioner, Nurse Practitioner

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: mbrennan31990@direct.bostonchildrens.org

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.

• Children's Hospital Pediatric Associates, Inc

  • Pediatrics Physician
  • Boston, MA
  • NPI 1457306664
  Medicare reassignment Care Compare group NPD
• The Shriners' Hospital for Children

  • Pediatric Orthopaedic Surgery Physician
  • Springfield, MA
  • NPI 1285078444
  Medicare reassignment NPD
• The Shriners' Hospital for Children

  • Rehabilitation Clinic/Center
  • Springfield, MA
  • NPI 1811611825
  NPD
• The Shriners' Hospital for Children

  • Anesthesiology Physician
  • Boston, MA
  • NPI 1831688555
  NPD
• The Shriners' Hospital for Children

  • Children's Hospital
  • Boston, MA
  • NPI 1114053782
  NPD (past)

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

{
    "created_epoch": "1719792000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1742947200000",
    "number": "1336984368",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "300 LONGWOOD AVE",
            "city": "BOSTON",
            "state": "MA",
            "postal_code": "021155724",
            "telephone_number": "617-355-6000"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "300 LONGWOOD AVE",
            "city": "BOSTON",
            "state": "MA",
            "postal_code": "021155724",
            "telephone_number": "617-355-6000"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "51 Blossom St",
            "address_purpose": "LOCATION",
            "city": "Boston",
            "state": "MA",
            "postal_code": "021142601",
            "country_code": "US",
            "telephone_number": "617-722-6000",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "BRENNAN",
        "first_name": "MARY",
        "middle_name": "THERESA",
        "credential": "CPNP",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2024-07-01",
        "last_updated": "2025-03-26",
        "certification_date": "2025-03-26",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363LP0200X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Pediatrics",
            "state": "MA",
            "license": "RN2334511",
            "primary": true
        },
        {
            "code": "163W00000X",
            "taxonomy_group": "",
            "desc": "Registered Nurse",
            "state": "MA",
            "license": "RN2334511",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Douglas V Brennan, MD
• Emily Brennan, MSN, CPNP
• Gregory T Brennan, PA-C
• Ian Brennan
• Lisa Brennan, RN
• Michael Thomas Brennan, PHARMD
• Patricia Ann Brennan, RN
• Patrick Brennan, M.D., PH.D.
• Rachael Brennan
• Theresa Conena Brennan, RDH BS

• Pediatric Nurse Practitioner in Boston, MA
• Providers in Boston, MA by specialty
• Pediatric Nurse Practitioner in Massachusetts

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Mar 26, 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.