William Owen Lacy, MD
NPI 1558457796ActiveIndividual· Internal Medicine, Sleep Medicine· Louisville, KY
Internal Medicine, Sleep Medicine (MD) in Louisville, Kentucky, trained at University of Louisville School of Medicine (class of 1986). Their prescriptions cost Medicare Part D more than their services did: $2,531,174 for 4,481 claims, against $138,687 paid for services in 2024. Inspire Medical Systems, Inc. was the largest of 9 companies reporting payments in 2025, $1,109 in all, mostly food and beverage.
Overview
| NPI | 1558457796 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Oct 5, 2006 |
| Last updated in NPPES | Nov 20, 2024 |
| Certified by provider | Nov 20, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Sleep Medicine Primary | 207RS0012X | 28706 | KY |
| Internal Medicine | 207R00000X | 28706 | KY |
| Internal Medicine, Pulmonary Disease | 207RP1001X | 28706 | KY |
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 - Pulmonary Disease (KY) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 810 |
|---|---|
| Services billed | 2,007 across 26 procedure codes |
| Paid by Medicare | $138,687 |
Part D prescriptions in 2024
| Prescriptions (claims) | 4,481 · 5,855 30-day fills |
|---|---|
| Patients | 721 |
| Total drug cost | $2,531,174 |
| Generic share | 29% of claims |
Education and affiliations
| Medical school | University of Louisville School of Medicine |
|---|---|
| Graduation year | 1986 |
| Medicare specialty | Pulmonary Disease |
| Secondary specialties | Sleep Medicine |
| Telehealth | Offers telehealth |
Medical group
- Community Medical Associates IncMadison, IN · 1,372 clinicians
Hospital affiliations
- Norton Hospitals, IncLouisville, KY
- Uofl Health - Jewish Hospital and Mary & Elizabeth HospitalLouisville, KY
Industry payments (Open Payments)
- 2025$1,109 · 12 payments from 9 companies
- 2024$563.62 · 8 payments from 4 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Inspire Medical Systems, Inc. | $159.99 | 4 |
| Insmed, Inc. | $136.58 | 1 |
| Zoll Respicardia, Inc. | $130.38 | 1 |
| Astrazeneca Pharmaceuticals LP | $126.00 | 1 |
| Viatris Specialty LLC | $123.60 | 1 |
What the 2025 payments were for
- Food and Beverage$1,109 · 12 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Internal Medicine, Sleep Medicine providers in Louisville
- 1700956869
- 1780926279
- 1104349216
- 1841661410
- 1679222632
- 1447230651
- 1205800034
- 1689137234
- 1760800031
- 1588695886
- 1841640331
- 1386618221
All Internal Medicine, Sleep Medicine providers in Kentucky →