Jonas Kwiatkowski, MD
NPI 1346796646 · Hospitalist Physician · Mason City, IA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Jonas Kwiatkowski, MD is a Hospitalist Physician provider in Mason City, IA (NPI 1346796646).
Provider details
- NPI number
- 1346796646
- Entity type
- Individual
- Primary specialty
- Hospitalist PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- MD-46838 (IA)
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
9 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
1,504 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 726 | $109 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 268 | $72 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 258 | $105 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 189 | $160 |
| Advance Care Planning, First 30 Minutes99497 | 50 | $70 |
| Critical Care, First 30-74 Minutes99291 | 13 | $194 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 8 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Cefdinir | 29 | 29 |
| Furosemide | 24 | 11 |
| Atorvastatin Calcium | 21 | 13 |
| Hydralazine Hcl | 15 | — |
| Clopidogrel Bisulfatebrand: Clopidogrel | 14 | — |
| Azithromycin | 13 | 13 |
| Lisinopril | 13 | — |
Practice location
Mailing address
Additional practice locations (1)
- 2801 N Gantenbein AvePortland, OR 97227-1623Phone: (503) 413-8407
Registry dates
- Enumerated
- 2016-08-28
- Last updated
- 2025-11-03
- Certified
- 2025-11-03
Frequently asked questions
- What is Jonas Kwiatkowski's NPI number?
- Jonas Kwiatkowski's National Provider Identifier (NPI) is 1346796646, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jonas Kwiatkowski's specialty?
- Jonas Kwiatkowski is listed in the NPPES registry with a primary specialty of Hospitalist Physician (Allopathic & Osteopathic Physicians).
- Where is Jonas Kwiatkowski located?
- Jonas Kwiatkowski's practice location on file with NPPES is 1000 4th St Sw, Mason City, IA 50401-2800.
- What is Jonas Kwiatkowski's phone number?
- The practice phone number listed in the NPPES registry for Jonas Kwiatkowski is (641) 428-5192.
- Does Jonas Kwiatkowski accept Medicare?
- Jonas Kwiatkowski is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Jonas Kwiatkowski's NPI active?
- Yes — Jonas Kwiatkowski's NPI (1346796646) is active in the NPPES registry as of the last update on 2025-11-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.