Karin Tiernan, LADC I

Primary specialty

Addiction (Substance Use Disorder) CounselorTaxonomy code 101YA0400X

License

20-5054049 Issued in MA

Practice address

488 Pleasant St Ste 5
New Bedford, MA 02740-5904

Phone

(508) 789-5637

Fax

(774) 389-1705

NPI assigned

Jan 25, 2016

Sex

Female

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

Mental Health Counselor

Education

Other, 2018

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Telehealth

Offers telehealth services

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 and National Provider Directory roles.

• Karin Tiernan Counseling Services LLC

  • Community/Behavioral Health Agency
  • Fairhaven, MA
  • NPI 1144003690
  Medicare reassignment NPD Authorized official
• Habit Opco, LLC

  • Methadone Clinic
  • Springfield, MA
  • NPI 1023175072
  NPD (past)
• Habit Opco, LLC

  • Substance Use Disorder Rehabilitation Clinic/Center
  • Fitchburg, MA
  • NPI 1255034880
  NPD (past)

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

{
    "created_epoch": "1453680000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1770076800000",
    "number": "1922465798",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "488 PLEASANT ST STE 5",
            "city": "NEW BEDFORD",
            "state": "MA",
            "postal_code": "027405904",
            "telephone_number": "508-789-5637",
            "fax_number": "774-389-1705"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "488 PLEASANT ST STE 5",
            "city": "NEW BEDFORD",
            "state": "MA",
            "postal_code": "027405904",
            "telephone_number": "508-789-5637",
            "fax_number": "774-389-1705"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "TIERNAN",
        "first_name": "KARIN",
        "credential": "LADC I",
        "sole_proprietor": "YES",
        "sex": "F",
        "enumeration_date": "2016-01-25",
        "last_updated": "2026-02-03",
        "certification_date": "2026-02-03",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "101YA0400X",
            "taxonomy_group": "",
            "desc": "Counselor, Addiction (Substance Use Disorder)",
            "state": "MA",
            "license": "20-5054049",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Stacy Thomas, MS, JD
• Kelly Thomasset
• Sharelle Thompson
• William L Thornson, PA-C
• Amanda Tiago
• Mary Elizabeth Timberlake, MA, CEIS
• Froukje Jeannette Timmer, FNP
• Nicole Alexandra Timmons, PHARMD
• Yagya Prasad Tiwari, M.D
• Donna Louise Tobin, CADC

• Addiction (Substance Use Disorder) Counselor in New Bedford, MA
• Providers in New Bedford, MA by specialty
• Addiction (Substance Use Disorder) Counselor in Massachusetts

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Feb 3, 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.