Individual provider Active NPI

Matthew Donovan Mills, LLMSW

  • Addiction (Substance Use Disorder) Counselor
  • Ann Arbor, MI
National Provider Identifier
1427976570
Registry record updated Jul 7, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Addiction (Substance Use Disorder) CounselorTaxonomy code 101YA0400X
License
6851121353 Issued in MI
Practice address
4925 Packard St
Ann Arbor, MI 48108-1521
Phone
(734) 971-0155
Fax
(734) 971-2730
NPI assigned
Jul 7, 2026
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Jul 7, 2026

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Addiction (Substance Use Disorder) Counselor 101YA0400X 6851121353 MI Primary

Addresses

Primary practice location

4925 Packard St
Ann Arbor, MI 48108-1521

Mailing address

29693 English Way
Novi, MI 48377-2031
Phone (248) 410-1992

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Not listed in the public Medicare enrollment file

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Not enrolled

Practice roles

OrganizationSpecialtyStatusNew patients
Catholic Social Services of Washtenaw County PastSince Jun 19, 2015 Accepting new patients

Organizations & group practices 1

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.

NPI Registry JSON

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

{
    "created_epoch": "1783382400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783382400000",
    "number": "1427976570",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "29693 ENGLISH WAY",
            "city": "NOVI",
            "state": "MI",
            "postal_code": "483772031",
            "telephone_number": "248-410-1992"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "4925 PACKARD ST",
            "city": "ANN ARBOR",
            "state": "MI",
            "postal_code": "481081521",
            "telephone_number": "734-971-0155",
            "fax_number": "734-971-2730"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "MILLS",
        "first_name": "MATTHEW",
        "middle_name": "DONOVAN",
        "credential": "LLMSW",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2026-07-07",
        "last_updated": "2026-07-07",
        "certification_date": "2026-07-07",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "101YA0400X",
            "taxonomy_group": "",
            "desc": "Counselor, Addiction (Substance Use Disorder)",
            "state": "MI",
            "license": "6851121353",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Ann Arbor, MI

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 7, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
  • National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.