Walter Zibas, MD
NPI 1437185915 · Pulmonary Disease Physician · Knoxville, TN
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Walter Zibas, MD is a Pulmonary Disease Physician provider in Knoxville, TN (NPI 1437185915).
Provider details
- NPI number
- 1437185915
- Entity type
- Individual
- Primary specialty
- Pulmonary Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 27781 (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 tenure25% of score
20 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
1,228 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 | 687 | $72 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 210 | $109 |
| Hospital Discharge Day Management, 30 Minutes Or Less99238 | 100 | $74 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 94 | $159 |
| Subsequent Nursing Facility Care With Straightforward Level of Medical Decision Making, Per Day, If Using Time, 20 Minutes Or More99308 | 52 | $68 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 23 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 70 | 32 |
| Apixabanbrand: Eliquis | 62 | 30 |
| Losartan Potassium | 39 | 21 |
| Amlodipine Besylate | 38 | 20 |
| Prednisone | 33 | 25 |
| Metoprolol Tartrate | 30 | 16 |
| Dapagliflozin Propanediol |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$332 across 10 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)
- 2240 Sutherland Ave Ste 103Knoxville, TN 37919-2333Phone: (865) 588-8831Fax: (868) 588-8841
- 10904 Kingston Pike Ste 102Knoxville, TN 37934-2952Phone: (865) 392-1540
Registry dates
- Enumerated
- 2006-06-25
- Last updated
- 2025-05-27
- Certified
- 2025-05-27
Frequently asked questions
- What is Walter Zibas's NPI number?
- Walter Zibas's National Provider Identifier (NPI) is 1437185915, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Walter Zibas's specialty?
- Walter Zibas is listed in the NPPES registry with a primary specialty of Pulmonary Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Walter Zibas located?
- Walter Zibas's practice location on file with NPPES is 6473 Kingston Pike, Knoxville, TN 75320-2333.
- What is Walter Zibas's phone number?
- The practice phone number listed in the NPPES registry for Walter Zibas is (865) 588-8831.
- Does Walter Zibas accept Medicare?
- Walter Zibas is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Walter Zibas's NPI active?
- Yes — Walter Zibas's NPI (1437185915) is active in the NPPES registry as of the last update on 2025-05-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.