William John Pierce, MD
NPI 1497838593ActiveIndividual· Family Medicine· Merrillville, IN
Family Medicine (MD) in Merrillville, Indiana, trained at University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) (class of 1970). Their prescriptions cost Medicare Part D more than their services did: $304,193 for 4,857 claims, against $89,812 paid for services in 2024. Exact Sciences Corporation was the largest of 3 companies reporting payments in 2025, $77.61 in all, mostly food and beverage.
Overview
| NPI | 1497838593 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Oct 23, 2006 |
| Last updated in NPPES | Jul 21, 2008 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Family Medicine Primary | 207Q00000X | 01025010 | IN |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Family Practice (IN) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 265 |
|---|---|
| Services billed | 1,287 across 16 procedure codes |
| Paid by Medicare | $89,812 |
Part D prescriptions in 2024
| Prescriptions (claims) | 4,857 · 8,185 30-day fills |
|---|---|
| Patients | 259 |
| Total drug cost | $304,193 |
| Generic share | 90% of claims |
Education and affiliations
| Medical school | University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) |
|---|---|
| Graduation year | 1970 |
| Medicare specialty | Family Practice |
Medical group
- Pinnacle Healthcare LLCCrown Point, IN · 9 clinicians
Hospital affiliations
- Methodist Hospitals IncGary, IN
- Pinnacle HospitalCrown Point, IN
- St Mary Medical Center IncHobart, IN
Other facilities
- Enhabit Home HealthHome health agency · Schererville, IN
- Powers Health Rehabilitation CenterInpatient rehabilitation facility · Crown Point, IN
Industry payments (Open Payments)
- 2025$77.61 · 4 payments from 3 companies
- 2024$140.71 · 7 payments from 4 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Exact Sciences Corporation | $40.20 | 2 |
| Pfizer Inc. | $19.90 | 1 |
| Aimmune Therapeutics, Inc. | $17.51 | 1 |
What the 2025 payments were for
- Food and Beverage$77.61 · 4 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 55 family medicine physicians in Merrillville · All family medicine physicians in Indiana