WILLIAM BRIAN ACKER II MD
NPI 1487947362
Orthopaedic Surgery in Southfield, MI

Q: What is William Acker's NPI number?

The NPI number for William Acker is 1487947362. It was assigned to this individual provider in the NPPES registry on May 25, 2011.

Q: What is William Acker's specialty?

The primary specialty registered for this NPI is Orthopaedic Surgery with taxonomy code 207X00000X.

Q: When was this NPI record last updated?

The NPPES record for William Acker was last updated on April 21, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since May 25, 2011PECOS EnrolledAccepts Medicare Assignment

26025 LAHSER RD FL 2, SOUTHFIELD, MI 48033(248) 663-1900(844) 598-9633 Get Directions Write a Review

NPPES record last updated: April 21, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Apr 21, 2026, Oct 22, 2020 (2 updates tracked since 2020).

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About William Brian Acker Ii Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

WILLIAM BRIAN ACKER II MD (NPI 1487947362) is an individual orthopaedic surgery provider in Southfield, Michigan, licensed in Michigan (4301098266) and active in the NPI registry since May 2011. He is enrolled in Medicare PECOS, is affiliated with Beaumont Hospital - Dearborn, and maintains 10 additional practice locations.

NPPES Registry Identity

NPI1487947362

Entity TypeIndividualMale

Primary Taxonomy207X00000X

Provider Legal NameWILLIAM BRIAN ACKER IICredential: MD

Location Address26025 LAHSER RD FL 2Southfield, MI 48033-2606

Mailing Address26211 Central Park Blvd Ste 201Southfield, MI 48076-4158 · (833) 667-3627 · Fax (833) 972-5509

Phone(248) 663-1900

Fax(844) 598-9633

Sole ProprietorNo

Medical School CMSTulane University School Of MedicineGraduated 2011

Enumeration DateMay 25, 2011

Last NPPES UpdateApril 21, 20262 updates tracked since enumeration

NPPES CertifiedApril 21, 2026

✔ NPI 1487947362 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOrthopaedic SurgeryAllopathic & Osteopathic Physicians

Taxonomy Code207X00000X

License✔ Licensed in MI · 4301098266

Definition

An orthopaedic surgeon is trained in the preservation, investigation and restoration of the form and function of the extremities, spine and associated structures by medical, surgical and physical means. An orthopaedic surgeon is involved with the care of patients whose musculoskeletal problems include congenital deformities, trauma, infections, tumors, metabolic disturbances of the musculoskeletal system, deformities, injuries and degenerative diseases of the spine, hands, feet, knee, hip, shoulder and elbow in children and adults. An orthopaedic surgeon is also concerned with primary and secondary muscular problems and the effects of central or peripheral nervous system lesions of the musculoskeletal system.

26025 LAHSER RD FL 2, Southfield, MI 48033

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Secondary Practice Locations 10

Location 133200 W 14 Mile Rd Ste 220West Bloomfield, MI 48322-3586 · Phone (248) 855-7400 · Fax (844) 598-9634

Location 210000 Telegraph Rd Ste 100Taylor, MI 48180-3330 · Phone (313) 887-6000 · Fax (313) 887-6005

Location 34550 Investment Dr Ste 100Troy, MI 48098-6334 · Phone (248) 265-4600 · Fax (248) 265-4605

Location 424255 W 13 Mile Rd Ste 100Bingham Farms, MI 48025-4345 · Phone (248) 988-8085 · Fax (844) 598-9635

Location 517877 W 14 Mile RdBeverly Hills, MI 48025-3127 · Phone (248) 644-3920 · Fax (844) 598-9632

Location 626750 Providence Pkwy Ste 220Novi, MI 48374-1212 · Phone (248) 596-0412 · Fax (833) 471-5849

Location 730575 Woodward AveRoyal Oak, MI 48073-0980 · Phone (248) 280-8550 · Fax (844) 266-0093

Location 845816 Schoenherr RdShelby Twp, MI 48315-6028 · Phone (248) 596-0412 · Fax (833) 471-5849

Location 91350 Kirts Blvd Ste 160Troy, MI 48084-4852 · Phone (248) 244-9426 · Fax (844) 607-0511

Location 104967 Crooks Rd Ste 100Troy, MI 48098-5812 · Phone (248) 846-8060 · Fax (833) 303-1612

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Buckeye Health Plan, Ambetter from Meridian, Ambetter Health and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

William Brian Acker Ii Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID8426287517

PECOS Enrollment IDI20170706001274

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

Medicare enrollment records show William Acker reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Michigan Orthopaedic Surgeons, PLLC

Same address

Orthopaedic Surgery

26025 LAHSER RD FL 2
Southfield, MI 48033

Reassigned Medicare billing, Michigan enrollment
103 clinicians in this Medicare group

NPI 1306394309 (248) 663-1900

Beaumont Medical Group- Specialty Services

4.3 mi

Surgery

3601 W 13 MILE RD
Royal Oak, MI 48073

Reassigned Medicare billing, Michigan enrollment
1,030 clinicians in this Medicare group

NPI 1578072906 (248) 898-5000

Oakwood Ambulatory LLC

13 mi

Internal Medicine

18101 OAKWOOD BLVD
Dearborn, MI 48124

Reassigned Medicare billing, Michigan enrollment
453 clinicians in this Medicare group

NPI 1003829441 (313) 593-7000

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 7

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Injection, triamcinolone acetonide, not otherwise specified, 10 mg J3301

Triamcinolone acetonide is a medication used to reduce inflammation in the body. It's given as a 10 mg injection for conditions like allergies, arthritis, or skin problems. The injection helps to decrease swelling, redness, and itching.

592 services44 patients

X-ray of shoulder, minimum of 2 views 73030

An X-ray of the shoulder, with a minimum of 2 views, is a non-invasive imaging test. It uses a small amount of radiation to produce images of your shoulder bones. This helps in diagnosing conditions like fractures, arthritis, or other abnormalities. The procedure is quick and painless.

85 services60 patients

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

71 services53 patients

Aspiration and/or injection of fluid from large joint 20610

This procedure involves using a needle to remove (aspiration) or introduce (injection) fluid into a large joint like the knee or hip. It can help diagnose conditions, relieve discomfort, or deliver medication directly to the joint.

70 services46 patients

X-ray of knee, 4 or more views 73564

An X-ray of the knee, 4 or more views, is a non-invasive imaging test. It involves capturing multiple images of your knee from different angles. This helps in diagnosing conditions such as fractures, arthritis, or infections. The procedure is quick and painless.

39 services29 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

31 services29 patients

Hospital Affiliations CMS Care Compare 5

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Beaumont Hospital - Dearborn

Acute Care Hospitals · Dearborn, MI

1/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number230020

Location18101 Oakwood BlvdDearborn, MI 48124 · Wayne County

Emergency services Birthing friendly

Beaumont Hospital Royal Oak

Acute Care Hospitals · Royal Oak, MI

2/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number230130

Location3601 W Thirteen Mile RdRoyal Oak, MI 48073 · Oakland County

Emergency services Birthing friendly

Corewell Health Trenton Hospital

Acute Care Hospitals · Trenton, MI

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number230176

Location5450 Fort StreetTrenton, MI 48183 · Wayne County

Emergency services Birthing friendly

Beaumont Hospital, Troy

Acute Care Hospitals · Troy, MI

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number230269

Location44201 Dequindre RoadTroy, MI 48085 · Oakland County

Emergency services Birthing friendly

Beaumont Hospital - Taylor

Acute Care Hospitals · Taylor, MI

2/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number230270

Location10000 Telegraph RoadTaylor, MI 48180 · Wayne County

Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 48033 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$90.76 typical visit price

range $58.04 – $177.36

Typical copayment $22.69 (range $14.51 – $44.34)

Most-billed visit code 99203

Established Patient

$72.38 typical visit price

range $18.32 – $143.49

Typical copayment $18.09 (range $4.58 – $35.87)

Most-billed visit code 99213

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 14

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

MS. ELEANOR RACHAEL WIEDEMAN PA-C

Physician Assistant (Medical)