Tomasz Osolkowski, MD
NPI 1598879710 · Internal Medicine Physician · Chicago, IL
Enrolled with Medicare as Order and Referring Only - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Tomasz Osolkowski, MD is a Internal Medicine Physician provider in Chicago, IL (NPI 1598879710).
Provider details
- NPI number
- 1598879710
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- 036096970 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
19 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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 · 31 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 110 | 33 |
| Amlodipine Besylate | 92 | 27 |
| Lisinopril | 80 | 26 |
| Metformin Hcl | 59 | 17 |
| Metoprolol Succinate | 58 | 17 |
| Tamsulosin Hcl | 54 | 13 |
| Escitalopram Oxalate |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$213 across 8 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
- 2006-08-17
- Last updated
- 2017-11-16
Frequently asked questions
- What is Tomasz Osolkowski's NPI number?
- Tomasz Osolkowski's National Provider Identifier (NPI) is 1598879710, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Tomasz Osolkowski's specialty?
- Tomasz Osolkowski is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Tomasz Osolkowski located?
- Tomasz Osolkowski's practice location on file with NPPES is 1634 W Polk St, Chicago, IL 60612-4352.
- What is Tomasz Osolkowski's phone number?
- The practice phone number listed in the NPPES registry for Tomasz Osolkowski is (312) 423-4200.
- Does Tomasz Osolkowski accept Medicare?
- Tomasz Osolkowski is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Tomasz Osolkowski's NPI active?
- Yes — Tomasz Osolkowski's NPI (1598879710) is active in the NPPES registry as of the last update on 2017-11-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.