Esther S Underdown, CADC

Primary specialty

Clinical Social WorkerTaxonomy code 1041C0700X

Practice address

12 Union St
Rockland, ME 04841-2739

Phone

(207) 701-4400

NPI assigned

Jul 12, 2010

Last updated

Sep 23, 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 1

Addresses

Other identifiers 1

Medicare fee-for-service enrollment

Enrolled in ME

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, 2011

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Spurwink Services IncorporatedGroup PAC ID 7810026945, 87 clinicians

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

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.

• Spurwink Services Incorporated

  • Mental Health Clinic/Center (Including Community Mental Health Center)
  • Portland, ME
  • NPI 1760507297
  Medicare reassignment Care Compare group NPD

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

{
    "created_epoch": "1278892800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1758585600000",
    "number": "1073825618",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "901 WASHINGTON AVE STE 100",
            "city": "PORTLAND",
            "state": "ME",
            "postal_code": "041032842"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "12 UNION ST",
            "city": "ROCKLAND",
            "state": "ME",
            "postal_code": "048412739",
            "telephone_number": "207-701-4400"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "UNDERDOWN",
        "first_name": "ESTHER",
        "middle_name": "S",
        "credential": "CADC",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2010-07-12",
        "last_updated": "2025-09-23",
        "certification_date": "2025-09-23",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "1041C0700X",
            "taxonomy_group": "",
            "desc": "Social Worker, Clinical",
            "state": "NU",
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "435943199",
            "state": "ME"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Karen Topping-Sullivan, LADC
• Trade Winds Health, Swim, & Tan Club, Inc. (Coastal Physical Therapy)
• Rachael Mary-Grace Tripp, LCPC-C
• Isabelle Babette Troadec, RN
• Turning Tide Inc.
• Harold Williams Van Lonkhuyzen, MD
• Nicole M Vicente
• Brittany A Villacci, DPT
• Martha L Virgin, LCSW
• Kaitlyn Wager

• Clinical Social Worker in Rockland, ME
• Providers in Rockland, ME by specialty
• Clinical Social Worker in Maine

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 23, 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.