Alyssa Raven Hertz Thomas, MD

Primary specialty

Pediatrics PhysicianTaxonomy code 208000000X

License

286999 Issued in MA

Practice address

75 Francis St
Boston, MA 02115-6106

Phone

(617) 732-5500

NPI assigned

Jun 12, 2018

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: Yes

Green means eligible to order or refer.

Enrollment records 1

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: athomas252294@direct.bilh.masshiway.net
• Direct secure messaging: athomas28468@direct.bostonchildrens.org
• Direct secure messaging: thomas.alyssa.bwh@direct.partners.masshiway.net

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.

• Brigham & Womens Physicians Organization Inc

  • Internal Medicine Physician
  • Boston, MA
  • NPI 1033535497
  Medicare reassignment NPD
• Mass General Brigham Medical Group Suburban Massachusetts Inc

  • Family Medicine Physician
  • Newton, MA
  • NPI 1538191218
  Medicare reassignment NPD
• Brigham and Women'S Hospital

  • General Acute Care Hospital
  • Boston, MA
  • NPI 1093885816
  NPD
• Brigham & Womens Hospital, Inc.

  • General Acute Care Hospital
  • Boston, MA
  • NPI 1790717650
  NPD (past)
• Children'S Hospital Pediatric Associates, Inc

  • Pediatrics Physician
  • Boston, MA
  • NPI 1457306664
  NPD (past)

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

{
    "created_epoch": "1528761600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1746576000000",
    "number": "1134612211",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "300 LONGWOOD AVE # 961",
            "city": "BOSTON",
            "state": "MA",
            "postal_code": "021155724"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "75 FRANCIS ST",
            "city": "BOSTON",
            "state": "MA",
            "postal_code": "021156106",
            "telephone_number": "617-732-5500"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "3401 Civic Center Blvd Rm 55",
            "address_purpose": "LOCATION",
            "city": "Philadelphia",
            "state": "PA",
            "postal_code": "191044319",
            "country_code": "US",
            "telephone_number": "215-590-1220",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "300 Longwood Ave # 961",
            "address_purpose": "LOCATION",
            "city": "Boston",
            "state": "MA",
            "postal_code": "021155724",
            "country_code": "US",
            "telephone_number": "617-919-2341",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "THOMAS",
        "first_name": "ALYSSA",
        "middle_name": "RAVEN HERTZ",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2018-06-12",
        "last_updated": "2025-05-07",
        "certification_date": "2025-05-07",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "208000000X",
            "taxonomy_group": "",
            "desc": "Pediatrics",
            "state": "MA",
            "license": "286999",
            "primary": true
        },
        {
            "code": "208000000X",
            "taxonomy_group": "",
            "desc": "Pediatrics",
            "state": "PA",
            "license": "MT214912",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Aaron Joshua Thomas
• Afton R. Thomas, D.O.
• Ajith Thomas, MD
• Ajith J Thomas, M.D.
• Allison Taylor Thomas, MD, MPH
• Amanda Thomas, PHARM D
• Amari Thomas
• Amber Thomas
• Amy Thomas, LISW-S
• Ann Thomas

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

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on May 7, 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.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.