Istvan Wollak, M.D.
NPI 1619919305 · Pulmonary Disease Physician · Southaven, MS
Enrolled with Medicare as Practitioner - Pulmonary Disease · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Istvan Wollak, M.D. is a Pulmonary Disease Physician provider in Southaven, MS (NPI 1619919305).
Provider details
- NPI number
- 1619919305
- Entity type
- Individual
- Primary specialty
- Pulmonary Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 19168 (MS)
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
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
2,185 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 324 | $116 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 316 | $109 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 201 | $82 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 173 | $72 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 127 | $159 |
| Test to Measure Rate of Airflow94375 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 32 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Fluticasone/Umeclidin/Vilanterbrand: Trelegy Ellipta | 99 | 26 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 88 | 44 |
| Macitentanbrand: Opsumit | 77 | 11 |
| Montelukast Sodium | 69 | 23 |
| Prednisone | 55 | 29 |
| Fluticasone/Vilanterolbrand: Breo Ellipta | 51 | 14 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$370 across 21 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
Registry dates
- Enumerated
- 2006-06-10
- Last updated
- 2022-01-24
- Certified
- 2022-01-24
Frequently asked questions
- What is Istvan Wollak's NPI number?
- Istvan Wollak's National Provider Identifier (NPI) is 1619919305, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Istvan Wollak's specialty?
- Istvan Wollak is listed in the NPPES registry with a primary specialty of Pulmonary Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Istvan Wollak located?
- Istvan Wollak's practice location on file with NPPES is 401 Southcrest Cir, Southaven, MS 38671-6726.
- What is Istvan Wollak's phone number?
- The practice phone number listed in the NPPES registry for Istvan Wollak is (662) 349-0488.
- Does Istvan Wollak accept Medicare?
- Istvan Wollak is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Istvan Wollak's NPI active?
- Yes — Istvan Wollak's NPI (1619919305) is active in the NPPES registry as of the last update on 2022-01-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.