Ruth Mack

Primary specialty

CounselorTaxonomy code 101Y00000X

Practice address

10 Billerica Rd
Chelmsford, MA 01824-3011

Phone

(978) 821-6587

Fax

(978) 454-3343

NPI assigned

Jun 5, 2006

Last updated

Nov 2, 2026By 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

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

Mental Health Counselor

Education

Other, 1971

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Telehealth

Offers telehealth services

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

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

{
    "created_epoch": "1149465600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1793577600000",
    "number": "1730128042",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "10 PLEASANT AVE",
            "city": "CHELMSFORD",
            "state": "MA",
            "postal_code": "018243214",
            "telephone_number": "978-821-6587",
            "fax_number": "978-454-3343"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "10 BILLERICA RD",
            "city": "CHELMSFORD",
            "state": "MA",
            "postal_code": "018243011",
            "telephone_number": "978-821-6587",
            "fax_number": "978-454-3343"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "MACK",
        "first_name": "RUTH",
        "name_prefix": "Mrs.",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2006-06-05",
        "last_updated": "2026-11-02",
        "certification_date": "2026-11-02",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "101Y00000X",
            "taxonomy_group": "",
            "desc": "Counselor",
            "state": null,
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

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• Counselor in Chelmsford, MA
• Providers in Chelmsford, MA by specialty
• Counselor in Massachusetts

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