NPIMap

Individual provider Active NPI

William Brian Acker II, MD

  • Orthopaedic Surgery Physician
  • Southfield, MI
National Provider Identifier
1487947362
Registry record updated Apr 21, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Orthopaedic Surgery PhysicianTaxonomy code 207X00000X
License
4301098266 Issued in MI
Practice address
26025 Lahser Rd FL 2
Southfield, MI 48033-2606
Phone
(248) 663-1900
Fax
(844) 598-9633
NPI assigned
May 25, 2011
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Apr 21, 2026

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Orthopaedic Surgery Physician 207X00000X 4301098266 MI Primary

Addresses

Primary practice location

26025 Lahser Rd FL 2
Southfield, MI 48033-2606

Mailing address

26211 Central Park Blvd Ste 201
Southfield, MI 48076-4158
Phone (833) 667-3627

Other practice location 1

33200 W 14 Mile Rd Ste 220
West Bloomfield, MI 48322-3586
Phone (248) 855-7400

Other practice location 2

10000 Telegraph Rd Ste 100
Taylor, MI 48180-3330
Phone (313) 887-6000

Other practice location 3

4550 Investment Dr Ste 100
Troy, MI 48098-6334
Phone (248) 265-4600

Other practice location 4

24255 W 13 Mile Rd Ste 100
Bingham Farms, MI 48025-4345
Phone (248) 988-8085

Other practice location 5

17877 W 14 Mile Rd
Beverly Hills, MI 48025-3127
Phone (248) 644-3920

Other practice location 6

26750 Providence Pkwy Ste 220
Novi, MI 48374-1212
Phone (248) 596-0412

Other practice location 7

30575 Woodward Ave
Royal Oak, MI 48073-0980
Phone (248) 280-8550

Other practice location 8

45816 Schoenherr Rd
Shelby Twp, MI 48315-6028
Phone (248) 596-0412

Other practice location 9

1350 Kirts Blvd Ste 160
Troy, MI 48084-4852
Phone (248) 244-9426

Other practice location 10

4967 Crooks Rd Ste 100
Troy, MI 48098-5812
Phone (248) 846-8060

Electronic endpoints 2

TypeEndpointUseAffiliation
Direct Messaging Address william.acker.1@9974.direct.athenahealth.com Direct
Direct Messaging Address wacker105550@direct.beaumont.edu

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in MI
Eligible to order & refer
  • Part B services
  • Medical equipment
  • Home health
  • Power mobility devices
  • Hospice
Green means eligible to order or refer.

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20170706001274 MI Practitioner - Orthopedic Surgery 8426287517 Reassigns benefits to 3 organizations

Care Compare profile

Medicare Care Compare
Specialty
Orthopedic Surgery
Education
Tulane University School of Medicine, 2011
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Beaumont Medical Group- Specialty ServicesGroup PAC ID 7214299866, 868 clinicians
Dearborn Physical Therapy LTDGroup PAC ID 2668383910, 97 clinicians
Michigan Orthopaedic Surgeons PLLCGroup PAC ID 7810277811, 127 clinicians

Practice addresses (Care Compare)

10000 Telegraph Rd
Taylor, MI 48180-3330
Phone (313) 295-5360

23852 Michigan Ave
Dearborn, MI 48124-1829

26025 Lahser Rd
FL 2
Southfield, MI 48033-2606
Phone (248) 663-1900

28100 Grand River Ave
Farmington Hills, MI 48336-5970

Hospital & facility affiliations

  • Beaumont Hospital - Taylor Hospital, Taylor, MI, CCN 230270
  • Beaumont Hospital Royal Oak Hospital, Royal Oak, MI, CCN 230130
  • Corewell Health Trenton Hospital Hospital, Trenton, MI, CCN 230176
  • Beaumont Hospital - Dearborn Hospital, Dearborn, MI, CCN 230020
  • Rehabilitation Institute of Michigan Inpatient rehabilitation facility, Detroit, MI, CCN 233027

Procedures performed for Medicare patients

ProcedureNumber of procedures
Lower limb (leg) arthroscopy (minimally invasive joint repair)1-10
Upper limb (arm) arthroscopy (minimally invasive joint repair)26

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Doctor of Medicine

State licenses

LicenseStateTypeSpecialty
4301098266MIMDOrthopaedic Surgery Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Oakwood Ambulatory, LLC CurrentSince Jun 28, 2017 Accepting new patients
Oakwood Ambulatory LLC Orthopaedic Surgery CurrentSince Jun 28, 2017 Accepting new patients
Beaumont Medical Group- Specialty Services CurrentSince Aug 21, 2018 Accepting new patients
Michigan Orthopaedic Surgeons, PLLC Orthopaedic Surgery CurrentSince Jul 29, 2019 Accepting new patients
Michigan Orthopaedic Surgeons PLLC Orthopaedic Surgery PastSince Mar 27, 2022 Accepting new patients
Michigan Orthopaedic Surgeons PLLC Orthopaedic Surgery PastSince May 25, 2021 Accepting new patients

Locations

201 3rd St
Ste 200
Belleville, MI 48111
Phone (734) 697-9065

17877 W 14 Mile Rd
Beverly Hills, MI 48025
Phone (248) 644-3920

24255 W 13 Mile Rd
Ste 100
Bingham Farms, MI 48025
Phone (248) 988-8085

7330 N Canton Center Rd
Canton, MI 48187
Phone (734) 454-8001

7300 N Canton Center Rd
Canton, MI 48187
Phone (734) 454-8001

28100 Grand River Ave
Ste 301
Farmington Hills, MI 48336
Phone (947) 521-1320

26750 Providence Pkwy
Ste 220
Novi, MI 48374
Phone (248) 596-0412

3535 W 13 Mile Rd
Ste 742
Royal Oak, MI 48073
Phone (248) 551-9100

3535 W 13 Mile Rd
Ste 744
Royal Oak, MI 48073
Phone (248) 551-1852

26025 Lahser Rd
Fl 2
Southfield, MI 48033
Phone (248) 663-1900

26211 Central Park Blvd
Ste 201
Southfield, MI 48076
Phone (248) 845-4381

26901 Beaumont Blvd
Ste 3D
Southfield, MI 48033
Phone (947) 522-1860

10000 Telegraph Rd
Taylor, MI 48180
Phone (313) 295-5000

10000 Telegraph Rd
Ste 100
Taylor, MI 48180
Phone (313) 887-6000

4550 Investment Dr
Ste 100
Troy, MI 48098
Phone (248) 265-4600

4967 Crooks Rd
Ste 100
Troy, MI 48098
Phone (248) 846-8060

1350 Kirts Blvd
Ste 160
Troy, MI 48084
Phone (248) 244-9426

45816 Schoenherr Rd
Utica, MI 48315
Phone (586) 842-2400

33200 W 14 Mile Rd
Ste 220
West Bloomfield, MI 48322
Phone (248) 855-7400

Interoperability endpoints

  • Direct secure messaging: wacker1221981@epic00.shdirect.org
  • Direct secure messaging: wacker445796@direct.hfhs.org

Organizations & group practices 16

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.

View all 16

Hospital & facility affiliations 8

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

NPI Registry JSON

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

{
    "created_epoch": "1306281600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1776729600000",
    "number": "1487947362",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "26211 CENTRAL PARK BLVD STE 201",
            "city": "SOUTHFIELD",
            "state": "MI",
            "postal_code": "480764158",
            "telephone_number": "833-667-3627",
            "fax_number": "833-972-5509"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "26025 LAHSER RD FL 2",
            "city": "SOUTHFIELD",
            "state": "MI",
            "postal_code": "480332606",
            "telephone_number": "248-663-1900",
            "fax_number": "844-598-9633"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "33200 W 14 Mile Rd Ste 220",
            "address_purpose": "LOCATION",
            "city": "West Bloomfield",
            "state": "MI",
            "postal_code": "483223586",
            "country_code": "US",
            "telephone_number": "248-855-7400",
            "fax_number": "844-598-9634",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "10000 Telegraph Rd Ste 100",
            "address_purpose": "LOCATION",
            "city": "Taylor",
            "state": "MI",
            "postal_code": "481803330",
            "country_code": "US",
            "telephone_number": "313-887-6000",
            "fax_number": "313-887-6005",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "4550 Investment Dr Ste 100",
            "address_purpose": "LOCATION",
            "city": "Troy",
            "state": "MI",
            "postal_code": "480986334",
            "country_code": "US",
            "telephone_number": "248-265-4600",
            "fax_number": "248-265-4605",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "24255 W 13 Mile Rd Ste 100",
            "address_purpose": "LOCATION",
            "city": "Bingham Farms",
            "state": "MI",
            "postal_code": "480254345",
            "country_code": "US",
            "telephone_number": "248-988-8085",
            "fax_number": "844-598-9635",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "17877 W 14 Mile Rd",
            "address_purpose": "LOCATION",
            "city": "Beverly Hills",
            "state": "MI",
            "postal_code": "480253127",
            "country_code": "US",
            "telephone_number": "248-644-3920",
            "fax_number": "844-598-9632",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "26750 Providence Pkwy Ste 220",
            "address_purpose": "LOCATION",
            "city": "Novi",
            "state": "MI",
            "postal_code": "483741212",
            "country_code": "US",
            "telephone_number": "248-596-0412",
            "fax_number": "833-471-5849",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "30575 Woodward Ave",
            "address_purpose": "LOCATION",
            "city": "Royal Oak",
            "state": "MI",
            "postal_code": "480730980",
            "country_code": "US",
            "telephone_number": "248-280-8550",
            "fax_number": "844-266-0093",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "45816 Schoenherr Rd",
            "address_purpose": "LOCATION",
            "city": "Shelby Twp",
            "state": "MI",
            "postal_code": "483156028",
            "country_code": "US",
            "telephone_number": "248-596-0412",
            "fax_number": "833-471-5849",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "1350 Kirts Blvd Ste 160",
            "address_purpose": "LOCATION",
            "city": "Troy",
            "state": "MI",
            "postal_code": "480844852",
            "country_code": "US",
            "telephone_number": "248-244-9426",
            "fax_number": "844-607-0511",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "4967 Crooks Rd Ste 100",
            "address_purpose": "LOCATION",
            "city": "Troy",
            "state": "MI",
            "postal_code": "480985812",
            "country_code": "US",
            "telephone_number": "248-846-8060",
            "fax_number": "833-303-1612",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "ACKER",
        "first_name": "WILLIAM",
        "middle_name": "BRIAN",
        "name_suffix": "II",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2011-05-25",
        "last_updated": "2026-04-21",
        "certification_date": "2026-04-21",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207X00000X",
            "taxonomy_group": "",
            "desc": "Orthopaedic Surgery",
            "state": "MI",
            "license": "4301098266",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "william.acker.1@9974.direct.athenahealth.com",
            "affiliation": "N",
            "use": "DIRECT",
            "useDescription": "Direct",
            "address_1": "26025 Lahser Rd Fl 2",
            "city": "Southfield",
            "state": "MI",
            "country_code": "US",
            "postal_code": "480332606",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "wacker105550@direct.beaumont.edu",
            "affiliation": "N",
            "address_1": "10000 Telegraph Rd Ste 100",
            "city": "Taylor",
            "state": "MI",
            "country_code": "US",
            "postal_code": "481803330",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

Other providers in Southfield, MI

Sources for this page

Verify at the official NPI Registry.