WILLIAM OWEN LACY MD NPI 1558457796

NPI Information

  • NPI: 1558457796
  • Provider Name: WILLIAM OWEN LACY, MD
  • Classification: Internal Medicine - 207RS0012X
  • Specialization: Sleep Medicine
  • Entity Type: Individual
  • PECOS Registration: Yes
  • Address: 4606 GREENWOOD RD
    LOUISVILLE, KY
    ZIP 40258
  • Phone: (502) 937-2209

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NPI Details

William Owen Lacy, MD is a sleep medicine internal medicine in Louisville, KY with 40 years of experience. The provider is an Internist who practices Sleep Medicine is certified in the subspecialty of sleep medicine and specializes in the clinical assessment, physiologic testing, diagnosis, management and prevention of sleep and circadian rhythm disorders. Sleep specialists treat patients of any age and use multidisciplinary approaches. Disorders managed by sleep specialists include, but are not limited to, sleep related breathing disorders, insomnia, hypersomnias, circadian rhythm sleep disorders, parasomnias and sleep related movement disorders. William Owen Lacy, MD NPI is 1558457796. The provider is registered as an individual entity type.

The NPPES NPI record indicates the provider is a male.

Education
Medical School: UNIVERSITY OF LOUISVILLE SCHOOL OF MEDICINE
Graduation Year:1986

The provider's business location address is:

4606 GREENWOOD RD
LOUISVILLE, KY
ZIP 40258
Phone: (502) 937-2209

The NPI 1558457796 is registered in the Medicare Provider, Enrollment, Chain and Ownership System (PECOS). The provider is legally eligible to order and refer Part B (Clinical Laboratory and Imaging), Durable Medical Equipment, Part A Home Health Agency (HHA), Power Mobility Devices.

The following top HCPCS codes were publicly reported for this provider under the Medicare program for the year 2016. The reported codes are based on the top codes for each available Medicare specialty, excluding evaluation and management codes.

  • Established patient office or other outpatient visit, 30-39 minutes (HCPCS:99214)
  • Established patient office or other outpatient visit, 20-29 minutes (HCPCS:99213)
  • Test to determine lung volumes using sensors (HCPCS:94726)
  • Test to examine how well the lungs exchange gases (HCPCS:94729)
  • Established patient office or other outpatient visit, 40-54 minutes (HCPCS:99215)
  • Test to measure expiratory airflow and volume (HCPCS:94010)
  • New patient office or other outpatient visit, 45-59 minutes (HCPCS:99204)
  • Test to measure expiratory airflow and volume changes before and after medication administration (HCPCS:94060)
  • 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 (HCPCS:G0399)
  • Follow-up hospital inpatient care per day, typically 25 minutes (HCPCS:99232)
  • Smoking and tobacco use intensive counseling, 4-10 minutes (HCPCS:99406)
  • New patient office or other outpatient visit, 30-44 minutes (HCPCS:99203)
  • Sleep study in sleep lab with continuous airway pressure (6 years or older) (HCPCS:95811)
  • X-ray of chest, 2 views (HCPCS:71046)
  • Sleep study in sleep lab (6 years or older) (HCPCS:95810)
  • Follow-up hospital inpatient care per day, typically 35 minutes (HCPCS:99233)
  • Test for exercise-induced lung stress (HCPCS:94618)
  • Follow-up hospital inpatient care per day, typically 15 minutes (HCPCS:99231)

The enumeration date for this NPI number is 10/5/2006 and was last updated on 11/20/2024.

Taxonomy Codes

The NPI record includes the healthcare provider taxonomy classification, state license number and state of licensure. The following information regarding the scope of practice of this provider is available:

No. Taxonomy Code Taxonomy Clasification Taxonomy Specialization License Number License State Primary
1207R00000XInternal Medicine28706KENTUCKYNo
2207RP1001XInternal MedicinePulmonary Disease28706KENTUCKYNo
3207RS0012XInternal MedicineSleep Medicine28706KENTUCKYYes

Other Identifiers

The following information regarding additional identifiers associated to this NPI record includes the other identifier number, identifier type, identifier state and issuer.

No. Other Provider Identifier Other Provider Identifier Type Other Provider Identifier State Other Provider Identifier Issuer
1200003570OTHERINDIANAINDIANA MEDICAID
264287063MEDICAIDKENTUCKY

What is NPI?

NPI stands for National Provider Identifier. The NPI is a 10-digit identification number that is completely unique. The NPI number by itself does not contain any identifiable information such as a provider’s speciality or location. The NPI is assigned to individuals or organizacions for their lifespan and it is independent of key provider information type updates like a change of practices, location or speciality.

This page was last updated on: 11/21/2025

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