Doctor profile · Federal record
Dr. Jonas Kwiatkowski, MD
Hospitalist Physician (CMS: Internal Medicine) · Internal Medicine Physician · Mason City, IA
- NPI 1346796646
- Accepts Medicare
- 10 yrs in practice
- Licensed in 2 states
- Male
- Solo practice
- No sanctions
Practice & contact
Operates at 2 locations .
- Primary practice
-
1000 4Th St Sw
Mason City, IA 504012800
(641) 428-5192
fax (641) 428-8041 - Additional location
-
2801 N Gantenbein Ave
Portland, OR 972271623
(503) 413-8407
Credentials & registration
- NPI registered
- August 2016 — 10 yrs on file
- Profile last updated
- November 3, 2025
- Year of graduation
- 2016 — 10 yrs since
- Specialty taxonomy
- 208M00000X — NUCC code
- State licenses (2)
- Iowa #MD-46838 · Oregon #MD227509
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1346796646. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
1,698
Distinct HCPCS
6
Medicare allowed
$176,702
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 648 | 311 | $111 | |
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 524 | 236 | $74 | |
99239 |
Hospital discharge day management, more than 30 minutes | 249 | 244 | $106 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 201 | 195 | $162 | |
99497 |
Advance care planning, first 30 minutes | 65 | 48 | $71 | |
99291 |
Critical care, first 30-74 minutes | 11 | 11 | $198 |
In context: peer comparison
Among 3 peers in this city , average services per provider: 294. This provider delivers 5.8× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
194
Patients
148
Total drug cost
$1,611
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Cefdinir | Generic | 29 | 27 | $353 |
| Atorvastatin Calcium | Generic | 18 | 17 | $113 |
| Amlodipine Besylate | Generic | 17 | 17 | $78 |
| Amoxicillin-Clavulanate Potass (Amoxicillin/Potassium Clav) | Brand | 17 | 17 | $175 |
| Lisinopril | Generic | 17 | 0 | $228 |
| Cephalexin | Generic | 14 | 14 | $94 |
| Pantoprazole Sodium | Generic | 13 | 12 | $147 |
| Metoprolol Succinate | Generic | 12 | 11 | $73 |
| Prednisone | Generic | 12 | 0 | $42 |
| Torsemide | Generic | 12 | 11 | $113 |
Hospital affiliations
Frequently asked questions
What is Dr. Jonas Kwiatkowski's medical specialty?
Dr. Jonas Kwiatkowski practices Hospitalist Physician in Mason City, IA.
Where does Dr. Jonas Kwiatkowski practice?
Dr. Jonas Kwiatkowski practices at 1000 4Th St Sw, Mason City, IA 504012800. Office phone: 6414285192.
What is Dr. Jonas Kwiatkowski's NPI?
Dr. Jonas Kwiatkowski's National Provider Identifier (NPI) is 1346796646, issued by NPPES.
Does Dr. Jonas Kwiatkowski accept Medicare assignment?
Yes. Dr. Jonas Kwiatkowski accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Jonas Kwiatkowski commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232); Hospital discharge day management (HCPCS 99239). Source: CMS Medicare Physician & Other Practitioners file.