William Clarke Maronn, LICSW

Primary specialty

Clinical Social WorkerTaxonomy code 1041C0700X

License

LICSW1140764 Issued in MA

Practice address

76 Bedford St Ste 22
Lexington, MA 02420-4641

Phone

(617) 866-0810

NPI assigned

Mar 24, 2025

Sex

Male

Sole proprietor

Yes

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

Specialties & licenses 1

Addresses

Medicare fee-for-service enrollment

Enrolled in MA

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: No
• Power mobility devices: No
• Hospice: No

Green means eligible to order or refer.

Enrollment records 1

Specialty

Clinical Social Worker

Education

Other, 2022

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

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 and National Provider Directory roles.

• Bill Maronn Licsw

  • Adult Mental Health Clinic/Center
  • Lexington, MA
  • NPI 1275418550
  NPD Authorized official

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

{
    "created_epoch": "1742774400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1748822400000",
    "number": "1003617119",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "76 BEDFORD ST STE 22",
            "city": "LEXINGTON",
            "state": "MA",
            "postal_code": "024204641",
            "telephone_number": "617-866-0810"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "76 BEDFORD ST STE 22",
            "city": "LEXINGTON",
            "state": "MA",
            "postal_code": "024204641",
            "telephone_number": "617-866-0810"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "MARONN",
        "first_name": "WILLIAM",
        "middle_name": "CLARKE",
        "credential": "LICSW",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2025-03-24",
        "last_updated": "2025-06-02",
        "certification_date": "2025-06-02",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "1041C0700X",
            "taxonomy_group": "",
            "desc": "Social Worker, Clinical",
            "state": "MA",
            "license": "LICSW1140764",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Clebert Marcelin Jr.
• Maria C Evangelisti, DMD, PC
• Hannah Rose Marini, M.S., CCC-SLP
• Mark N. Strecker, MD, PC
• Marlene Major LLC
• Brian David Marriott, M.D.
• Gerdine Marsan
• Schmidt Marseille
• Kenneth E Martel
• Katherine M Martien, MD

• Clinical Social Worker in Lexington, MA
• Providers in Lexington, MA by specialty
• Clinical Social Worker in Massachusetts

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jun 2, 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.