William Leon, MD
NPI 1841424462 · Emergency Medicine Physician · Nashville, TN
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Leon, MD is a Emergency Medicine Physician provider in Nashville, TN (NPI 1841424462).
Provider details
- NPI number
- 1841424462
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 020433 (TN)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
17 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
5 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
359 Medicare services, 2024 (ranked within specialty)
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 methodology.
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) |
|---|---|---|
| Emergency Department Visit With Moderate Level of Medical Decision Making99284 | 161 | $111 |
| Emergency Department Visit With High Level of Medical Decision Making99285 | 149 | $158 |
| Emergency Department Visit With Low Level of Medical Decision Making99283 | 29 | $66 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report Only93010 | 20 | $8 |
Typical Medicare-allowed amounts for these services range $8–$158 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote 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 · 6 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 51 | 51 |
| Methylprednisolone | 25 | 24 |
| Oxycodone Hcl/Acetaminophenbrand: Oxycodone-Acetaminophen | 21 | 18 |
| Ciprofloxacin Hcl | 17 | 17 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 14 | 14 |
| Sulfamethoxazole/Trimethoprimbrand: Sulfamethoxazole-Trimethoprim | 13 | 13 |
Practice location
Mailing address
Additional practice locations (4)
- 1411 W Baddour PkwyLebanon, TN 37087-2513Phone: (615) 875-6415
- 1559 Sparta StMc Minnville, TN 37110-1316Phone: (800) 893-9698
- 2835 Highway 231 NShelbyville, TN 37160-7327Phone: (615) 875-6415
- 1801 N Jackson StTullahoma, TN 37388-2201Phone: (615) 875-6415
Registry dates
- Enumerated
- 2009-05-11
- Last updated
- 2025-07-25
- Certified
- 2025-07-25
Frequently asked questions
- What is William Leon's NPI number?
- William Leon's National Provider Identifier (NPI) is 1841424462, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Leon's specialty?
- William Leon is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is William Leon located?
- William Leon's practice location on file with NPPES is 3601 the Vanderbilt Clinic, Nashville, TN 37232-1316.
- What is William Leon's phone number?
- The practice phone number listed in the NPPES registry for William Leon is (615) 322-3000.
- Does William Leon accept Medicare?
- William Leon is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Leon's NPI active?
- Yes — William Leon's NPI (1841424462) is active in the NPPES registry as of the last update on 2025-07-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.