NPPES file of Aug 9, 2026

John W. Lacey, M.D.

Internal Medicine Physician · Knoxville, TN

John W. Lacey, M.D. is an internal medicine physician with a practice address in Knoxville, Tennessee, and NPI 1508964487, issued on Sep 21, 2006. Check the license (Tennessee MD0000008513, as entered in NPPES) on the Tennessee Board of Medical Examiners; the federal record below is the public data PlainDoctor holds for this provider.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1508964487
Name
John W. Lacey
Credential
M.D.
Primary taxonomy
Internal Medicine Physician 207R00000X
License number
MD0000008513 TN
Self-reported in NPPES; status is on the state search
Practice location
1940 Alcoa Hwy, Knoxville, TN 37920
Phone
(865) 305-6810
Enumerated
Sep 21, 2006
Record last updated
Aug 3, 2015 (not updated in 11 years: call before relying on the address or phone)
Fax
(865) 305-6803
Medicaid ID
3163298 TN
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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8 nearest internal medicine physician records → All 2,596 in Tennessee → Look up another NPI →

Also registered at 1940 Alcoa Hwy

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. John Acker, M.D.Cardiovascular Disease Physician1497756241
  2. Gayathri Baljepally, MDCardiovascular Disease Physician1861586109
  3. Raj Baljepally, M.D.Interventional Cardiology Physician1598766370
  4. Myrwood Besozzi, M.D.Cardiovascular Disease Physician1740281518
  5. Paul Branca, MDPulmonary Disease Physician1700893252
  6. Seth Brant, MDPulmonary Disease Physician1841407939

Verify John W. Lacey in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersTennessee Board of Medical Examiners
    Search for license MD0000008513    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Tennessee license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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John W. Lacey among 2,596 internal medicine physician records in Tennessee

John W. Lacey, M.D. is one of 2,596 internal medicine physician records with a practice address in Tennessee. 80% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2006, is newer than 15% of them.

  • NPI issued2006 · 15% of these records are older, 46% newer
  • In a Medicare fileNo · 80% of these records are
  • In the CMS Doctors and Clinicians fileNo · 66% of these records are
  • Record last updated2015 · 56% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Tennessee practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

237 internal medicine physician records list a practice address in Knoxville

They are 237 of the 14,339 NPPES records with a practice address in Knoxville, and 2,596 internal medicine physician records in Tennessee. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 2,596 in Tennessee → Every provider in Knoxville → Internal Medicine Physician nationwide →

The 8 internal medicine physician records with the nearest ZIP codes

  1. Monte Biggs, M.D.Knoxville, TN 379201073611943
  2. John Cooper, M.D.Knoxville, TN 379201063510931
  3. Courtney George, MDKnoxville, TN 379201730287764
  4. Douglas Hembree, M.D.Knoxville, TN 379201427156397
  5. Rocio Huet, M.D.Knoxville, TN 379201073555041
  6. Sara Juarez, M.D.Knoxville, TN 379201932119351
  7. Hussein Kammona, MDKnoxville, TN 379201114023447
  8. Jeffry King, M.D.Knoxville, TN 379201700865540

Common questions

What is John W. Lacey, M.D.'s NPI number?

John W. Lacey, M.D.'s National Provider Identifier (NPI) is 1508964487, issued on Sep 21, 2006. An NPI identifies a provider in billing; it is not a license.

Where is John W. Lacey, M.D. located?

The NPPES record lists a practice address at 1940 Alcoa Hwy, Knoxville, TN, 37920. Phone: (865) 305-6810. Providers update this record themselves, so call before visiting.

How can I verify John W. Lacey, M.D.'s license?

NPPES lists Tennessee license number MD0000008513, as entered by the provider. Search the Tennessee Board of Medical Examiners at https://www.tn.gov/health/licensure/me.html. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.