Leszek Marczewski, MD
NPI 1508837972 · Family Medicine Physician · Sac City, IA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Leszek Marczewski, MD is a Family Medicine Physician provider in Sac City, IA (NPI 1508837972).
Provider details
- NPI number
- 1508837972
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 27430 (IA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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 prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 136 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Levothyroxine Sodium | 343 | 58 |
| Atorvastatin Calcium | 242 | 44 |
| Lisinopril | 188 | 42 |
| Amlodipine Besylate | 188 | 41 |
| Gabapentin | 186 | 40 |
| Losartan Potassium | 184 | 46 |
| Hydrocodone/Acetaminophen |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-02-01
- Last updated
- 2016-12-22
Frequently asked questions
- What is Leszek Marczewski's NPI number?
- Leszek Marczewski's National Provider Identifier (NPI) is 1508837972, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Leszek Marczewski's specialty?
- Leszek Marczewski is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Leszek Marczewski located?
- Leszek Marczewski's practice location on file with NPPES is 301 Highland Ave, Sac City, IA 50583-2411.
- What is Leszek Marczewski's phone number?
- The practice phone number listed in the NPPES registry for Leszek Marczewski is (712) 662-7119.
- Does Leszek Marczewski accept Medicare?
- Leszek Marczewski is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Leszek Marczewski's NPI active?
- Yes — Leszek Marczewski's NPI (1508837972) is active in the NPPES registry as of the last update on 2016-12-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.