Leonidas Vieron, M.D.
NPI 1245387737 · Internal Medicine Physician · Memphis, TN
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Leonidas Vieron, M.D. is a Internal Medicine Physician provider in Memphis, TN (NPI 1245387737).
Provider details
- NPI number
- 1245387737
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- R-4704 (AR)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
3 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
1,094 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 736 | $72 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 154 | $108 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 132 | $105 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 61 | $157 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 11 | $120 |
Typical Medicare-allowed amounts for these services range $72–$157 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 9 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 18 | 18 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 17 | 17 |
| Levofloxacin | 16 | 16 |
| Pantoprazole Sodium | 16 | 15 |
| Furosemide | 15 | 11 |
| Oxycodone Hcl/Acetaminophenbrand: Oxycodone-Acetaminophen | 13 | 13 |
| Carvedilol |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$260 across 8 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (2)
- 2100 N 7th StWest Memphis, AR 72301-2017Phone: (901) 226-3610Fax: (901) 226-3612
- 7601 Southcrest PkwySouthaven, MS 38671-4739Phone: (662) 772-2980Fax: (662) 772-2960
Registry dates
- Enumerated
- 2007-01-05
- Last updated
- 2020-11-24
- Certified
- 2020-11-24
Frequently asked questions
- What is Leonidas Vieron's NPI number?
- Leonidas Vieron's National Provider Identifier (NPI) is 1245387737, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Leonidas Vieron's specialty?
- Leonidas Vieron is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Leonidas Vieron located?
- Leonidas Vieron's practice location on file with NPPES is 2316 Thornwood Ln, Memphis, TN 38119-6722.
- What is Leonidas Vieron's phone number?
- The practice phone number listed in the NPPES registry for Leonidas Vieron is (901) 763-1695.
- Does Leonidas Vieron accept Medicare?
- Leonidas Vieron is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Leonidas Vieron's NPI active?
- Yes — Leonidas Vieron's NPI (1245387737) is active in the NPPES registry as of the last update on 2020-11-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.