Margaret Libby, NP-C

Primary specialty

Family Nurse PractitionerTaxonomy code 363LF0000X

License

CNP151055 Issued in ME

Practice address

100 Foden Rd
Suite 203
South Portland, ME 04106-2327

Phone

(207) 874-1489

Fax

(207) 523-8590

NPI assigned

Jun 23, 2015

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 names 1

• Margaret Defanti Former name

Medicare fee-for-service enrollment

Enrolled in ME

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, 2015

Medicare assignment

May accept Medicare assignment

Telehealth

Offers telehealth services

Group practices

Intermed PAGroup PAC ID 5092605261, 185 clinicians

Riverview Physical Therapy Limited PartnershipGroup PAC ID 2769393586, shared by 2 NPIs, 58 clinicians

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

Credentials

Nurse Practitioner

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: margaret.libby@int.eclinicaldirectplus.com

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.

• Intermed, PA

  • Internal Medicine Physician
  • South Portland, ME
  • NPI 1467422733
  Medicare reassignment Care Compare group NPD
• Intermed, PA

  • Pediatrics Physician
  • South Portland, ME
  • NPI 1295607836
  NPD

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

{
    "created_epoch": "1435017600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1772755200000",
    "number": "1619359007",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "100 GANNETT DR",
            "address_2": "SUITE C",
            "city": "SOUTH PORTLAND",
            "state": "ME",
            "postal_code": "041065900",
            "telephone_number": "207-347-2947",
            "fax_number": "207-874-2317"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "100 FODEN RD",
            "address_2": "SUITE 203",
            "city": "SOUTH PORTLAND",
            "state": "ME",
            "postal_code": "041062327",
            "telephone_number": "207-874-1489",
            "fax_number": "207-523-8590"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "LIBBY",
        "first_name": "MARGARET",
        "credential": "NP-C",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2015-06-23",
        "last_updated": "2026-03-06",
        "certification_date": "2026-03-06",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363LF0000X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Family",
            "state": "ME",
            "license": "CNP151055",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": [
        {
            "first_name": "MARGARET",
            "last_name": "DEFANTI",
            "code": "1",
            "type": "Former Name"
        }
    ]
}

• Frances Ladd Lewis, NP
• Amos Libby, LMSW-CC
• Brock Donald Libby, MD
• Emily L Libby, MD
• Kathryn Hess Libby
• Melissa Nye Libby, FNP
• Megan Brooks Lichter
• Benjamin D Liess, MD
• Lifestages Physician Services LLC
• Light in the Attic Psychotherapy Services, LLC

• Family Nurse Practitioner in South Portland, ME
• Providers in South Portland, ME by specialty
• Family Nurse Practitioner in Maine

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Mar 6, 2026; 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.