Leonidas N. Vieron, M.D.
Internal Medicine Physician · Memphis, TN
Leonidas N. Vieron, M.D. is an internal medicine physician with a practice address in Memphis, Tennessee, and NPI 1245387737, issued on Jan 5, 2007. Check the license (Tennessee 9440, as entered in NPPES) on the Tennessee Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Leonidas N. Vieron
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- 9440 TN
R-4704 AR
23420 MS
Self-reported in NPPES; status is on the state search - Practice location
- 2316 Thornwood LN, Memphis, TN 38119
- Phone
- (901) 763-1695
- Enumerated
- Jan 5, 2007
- Record last updated
- Nov 24, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (901) 682-3150
- Medicare enrollment
- Enrolled (PECOS I20090305000345); accepts Medicare assignment
- Medical or professional school
- University Of Tennessee, Hsc, College Of Medicine, 1975
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,596 in Tennessee → Look up another NPI →
Verify Leonidas N. Vieron in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTennessee Board of Medical Examiners
Search for license 9440Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
88% fewer Medicare Part D claims than the average internal medicine physician in 2024
377 Medicare Part D claims for 161 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims. 42 claims were for opioids.
Most prescribed
- Atorvastatin Calcium18 claims
- Hydrocodone-Acetaminophen17 claims
- Levofloxacin16 claims
- Pantoprazole Sodium16 claims
- Furosemide15 claims
- Oxycodone-Acetaminophen13 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.
Industry payments in 2024: $259.68
8 payments; by number, the most common kind was food and beverage; the largest payer was Salix Pharmaceuticals, a division of Bausch Health US, LLC. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Southeastern Physician Services PCUnion City, TN
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Leonidas N. Vieron among 2,596 internal medicine physician records in Tennessee
Leonidas N. Vieron, 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. Its NPI, issued in 2007, is newer than 54% of them.
- NPI issued2007 · 54% of these records are older, 37% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated1975 · median 2003 among the 1,705 with a school on file
- Record last updated2020 · 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).
325 internal medicine physician records list a practice address in Memphis
They are 325 of the 12,794 NPPES records with a practice address in Memphis, and 2,596 internal medicine physician records in Tennessee.
All 2,596 in Tennessee → Every provider in Memphis → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Eric Blakney, MDMemphis, TN 381191912909508
- Charles Carter, M.D.Memphis, TN 381191558362707
- Charlotte Deflumere, M.D.Memphis, TN 381191457354599
- Nasir Haque, MDMemphis, TN 381191346225620
- Douglas Karmel, M.D.Memphis, TN 381191619970407
- Paul Katz, MDMemphis, TN 381191497753131
- Taslim Khattak, M.D.Memphis, TN 381191679540298
- Diane Lum, M.D.Memphis, TN 381191821077975
Common questions
What is Leonidas N. Vieron, M.D.'s NPI number?
Leonidas N. Vieron, M.D.'s National Provider Identifier (NPI) is 1245387737, issued on Jan 5, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Leonidas N. Vieron, M.D. located?
The NPPES record lists a practice address at 2316 Thornwood LN, Memphis, TN, 38119. Phone: (901) 763-1695. Providers update this record themselves, so call before visiting.
How can I verify Leonidas N. Vieron, M.D.'s license?
NPPES lists Tennessee license number 9440, 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 Leonidas N. Vieron, M.D. prescribe under Medicare Part D?
In 2024, Leonidas N. Vieron, M.D. had 377 Medicare Part D claims for 161 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.