Gary Wayne Lethco, M.D.
Family Medicine Physician · Knoxville, TN
Gary Wayne Lethco, M.D. is a family medicine physician with a practice address in Knoxville, Tennessee, and NPI 1851466247, issued on Nov 21, 2006. Check the license (Tennessee MD0000013536, as entered in NPPES) on the Tennessee Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Gary Wayne Lethco
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- MD0000013536 TN
Self-reported in NPPES; status is on the state search - Practice location
- 1924 Alcoa Hwy, Knoxville, TN 37920
- Phone
- (865) 305-9350
- Enumerated
- Nov 21, 2006
- Record last updated
- Nov 26, 2012 (not updated in 14 years: call before relying on the address or phone)
- Fax
- (865) 305-8681
- Medicaid ID
- 3831165 NE
- Medicare enrollment
- Enrolled (PECOS I20040102000801); accepts Medicare assignment
- Medical or professional school
- University Of Tennessee, Hsc, College Of Medicine, 1981
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 2,674 in Tennessee → Look up another NPI →
Also registered at 1924 Alcoa Hwy
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Gary Wayne Lethco in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTennessee Board of Medical Examiners
Search for license MD0000013536Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
94% fewer Medicare Part D claims than the average family medicine physician in 2024
204 Medicare Part D claims for 52 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D.
Most prescribed
- Jardiance19 claims
- Ozempic16 claims
- Gabapentin13 claims
- Sertraline Hcl13 claims
- Duloxetine Hcl12 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
2 hospitals and group practices
- Parkwest Medical CenterLouisville, TN · Acute Care Hospitals3 of 5 stars
- University OF TennesseeKnoxville, TN
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Gary Wayne Lethco among 2,674 family medicine physician records in Tennessee
Gary Wayne Lethco, M.D. is one of 2,674 family medicine physician records with a practice address in Tennessee. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 17% of them.
- NPI issued2006 · 17% of these records are older, 48% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated1981 · median 2004 among the 1,685 with a school on file
- Record last updated2012 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Tennessee practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
244 family medicine physician records list a practice address in Knoxville
They are 244 of the 14,339 NPPES records with a practice address in Knoxville, and 2,674 family medicine physician records in Tennessee.
All 2,674 in Tennessee → Every provider in Knoxville → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
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- Daniel Cox, M.D.Knoxville, TN 379201417059254
- Larry Davis, MDKnoxville, TN 379201568420610
- Donald Keeble, MDKnoxville, TN 379201649232646
- Richard Mays, M.D.Knoxville, TN 379201275560351
- Fabian Mihelic, MD, FAAFPKnoxville, TN 379201639136179
Common questions
What is Gary Wayne Lethco, M.D.'s NPI number?
Gary Wayne Lethco, M.D.'s National Provider Identifier (NPI) is 1851466247, issued on Nov 21, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Gary Wayne Lethco, M.D. located?
The NPPES record lists a practice address at 1924 Alcoa Hwy, Knoxville, TN, 37920. Phone: (865) 305-9350. Providers update this record themselves, so call before visiting.
How can I verify Gary Wayne Lethco, M.D.'s license?
NPPES lists Tennessee license number MD0000013536, 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.
How much does Gary Wayne Lethco, M.D. prescribe under Medicare Part D?
In 2024, Gary Wayne Lethco, M.D. had 204 Medicare Part D claims for 52 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
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.