Leon Bass, M.D.
NPI 1063639839 · Pulmonary Disease Physician · Johnson City, TN
Enrolled with Medicare as Practitioner - Pulmonary Disease · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Leon Bass, M.D. is a Pulmonary Disease Physician provider in Johnson City, TN (NPI 1063639839).
Provider details
- NPI number
- 1063639839
- Entity type
- Individual
- Primary specialty
- Pulmonary Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 0101251956 (VA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
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
6 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
343 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) |
|---|---|---|
| Critical Care, First 30-74 Minutes99291 | 105 | $197 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 92 | $111 |
| Test to Examine How Well the Lungs Exchange Gases94729 | 48 | $54 |
| Test to Determine Lung Volumes Using Sensors94726 | 47 | $54 |
| Test to Measure Expiratory Airflow and Volume Changes Before and After Medication Administration94060 | 38 | $37 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 13 | $125 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$71 across 1 record (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 (5)
- 410 N State of Franklin Rd Ste 130aJohnson City, TN 37604-6972Phone: (423) 431-2460
- 105 W Stone Dr Ste 1jKingsport, TN 37660-3365Phone: (423) 378-7645
- 24530 Falcon Place Blvd Ste 101Abingdon, VA 24211-7665Phone: (276) 619-3876
- 743 Island RdBristol, VA 24201-7403Phone: (276) 469-4200
- 71 S Flanagan AveLebanon, VA 24266Phone: (276) 415-9160
Registry dates
- Enumerated
- 2007-04-20
- Last updated
- 2023-10-30
- Certified
- 2023-10-29
Frequently asked questions
- What is Leon Bass's NPI number?
- Leon Bass's National Provider Identifier (NPI) is 1063639839, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Leon Bass's specialty?
- Leon Bass is listed in the NPPES registry with a primary specialty of Pulmonary Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Leon Bass located?
- Leon Bass's practice location on file with NPPES is 400 N State of Franklin Rd, Johnson City, TN 37604-6035.
- What is Leon Bass's phone number?
- The practice phone number listed in the NPPES registry for Leon Bass is (423) 431-2727.
- Does Leon Bass accept Medicare?
- Leon Bass is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Leon Bass's NPI active?
- Yes — Leon Bass's NPI (1063639839) is active in the NPPES registry as of the last update on 2023-10-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.