Doctor profile · Federal record
Dr. William Lacy, MD
Sleep Medicine (Internal Medicine) Physician (CMS: Pulmonary Disease) · Internal Medicine Physician · Pulmonary Disease Physician · Louisville, KY
- NPI 1558457796
- Accepts Medicare
- MIPS 100.0 / 100 · 2023
- 40 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
4606 Greenwood RD
Louisville, KY 40258
(502) 937-2209 - Mailing address
-
Po Box 776351
Chicago, IL 606776351
Credentials & registration
- NPI registered
- October 2006 — 20 yrs on file
- Profile last updated
- November 20, 2024
- Year of graduation
- 1986 — 40 yrs since
- Specialty taxonomy
- 207RS0012X — NUCC code
- State license (1)
- Kentucky #28706
- Medicaid
- KY #64287063
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1558457796. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
1,484
Distinct HCPCS
10
Medicare allowed
$153,190
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 453 | 330 | $119 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 239 | 217 | $84 | |
94726 |
Test to determine lung volumes using sensors | 124 | 108 | $47 | |
94729 |
Test to examine how well the lungs exchange gases | 123 | 108 | $49 | |
94010 |
Test to measure expiratory airflow and volume | 98 | 89 | $24 | |
G0399 |
Home sleep test (hst) with type iii portable monitor, unattended; minimum of 4 channels: 2 respiratory movement/airflow, 1 ecg/heart rate and 1 oxygen saturation | 85 | 85 | $87 | |
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 84 | 66 | $162 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 70 | 70 | $154 | |
94060 |
Test to measure expiratory airflow and volume changes before and after medication administration | 62 | 60 | $34 | |
99406 |
Smoking and tobacco use intensive counseling, 4-10 minutes | 50 | 36 | $13 |
In context: peer comparison
Among 5 peers in Louisville Sleep Medicine (Internal Medicine) Physician, average services per provider: 85. This provider delivers 17× the peer median.Open Payments
Industry payments received
All-time total
$564
Transactions
8
Manufacturers
4
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Inspire Medical Systems, INC. | 5 | $206.01 | |
| AstraZeneca Pharmaceuticals Lp | 1 | $122.05 | |
| Idorsia Pharmaceuticals US INC | 1 | $119.70 | |
| Pulmonx Corporation | 1 | $115.86 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
3,013
Patients
892
Total drug cost
$1,408,428
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Trelegy Ellipta (Fluticasone/Umeclidin/Vilanter) | Brand | 814 | 188 | $733,527 |
| Albuterol Sulfate Hfa (Albuterol Sulfate) | Brand | 598 | 201 | $22,182 |
| Symbicort (Budesonide/Formoterol Fumarate) | Brand | 241 | 83 | $141,822 |
| Prednisone | Generic | 194 | 99 | $739 |
| Spiriva Respimat (Tiotropium Bromide) | Brand | 138 | 33 | $103,551 |
| Breztri Aerosphere (Budesonide/Glycopyr/Formoterol) | Brand | 135 | 35 | $109,427 |
| Stiolto Respimat (Tiotropium Br/Olodaterol Hcl) | Brand | 134 | 38 | $94,727 |
| Breo Ellipta (Fluticasone/Vilanterol) | Brand | 130 | 41 | $73,840 |
| Anoro Ellipta (Umeclidinium Brm/Vilanterol Tr) | Brand | 125 | 23 | $72,436 |
| Azithromycin | Generic | 115 | 31 | $1,730 |
Hospital affiliations
Frequently asked questions
What is Dr. William Lacy's medical specialty?
Dr. William Lacy practices Sleep Medicine (Internal Medicine) Physician in Louisville, KY.
Where does Dr. William Lacy practice?
Dr. William Lacy practices at 4606 Greenwood RD, Louisville, KY 40258. Office phone: 5029372209.
What is Dr. William Lacy's NPI?
Dr. William Lacy's National Provider Identifier (NPI) is 1558457796, issued by NPPES.
Does Dr. William Lacy accept Medicare assignment?
Yes. Dr. William Lacy accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. William Lacy commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Established patient office or other outpatient visit (HCPCS 99213); Test to determine lung volumes using sensors (HCPCS 94726). Source: CMS Medicare Physician & Other Practitioners file.