Jacek Wesolowski, APRN
NPI 1770197758 · Nurse Practitioner · Oak Lawn, IL
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Jacek Wesolowski, APRN is a Nurse Practitioner provider in Oak Lawn, IL (NPI 1770197758).
Provider details
- NPI number
- 1770197758
- Entity type
- Individual
- Primary specialty
- Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- APRN
- Sex
- Male
- Sole proprietor
- No
- License
- 209021812 (IL)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
5 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
3 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
144 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 144 | $86 |
Typical Medicare-allowed amounts for these services range $86–$86 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 39 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 113 | 50 |
| Metformin Hcl | 94 | 33 |
| Amlodipine Besylate | 90 | 36 |
| Losartan Potassium | 78 | 29 |
| Hydrochlorothiazide | 68 | 28 |
| Enalapril Maleate | 61 | 27 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa |
Practice location
Mailing address
Additional practice locations (2)
- 1950 W Polk StChicago, IL 60612-3723Phone: (312) 864-6000
- 17800 Kedzie Ave Ste AmgHazel Crest, IL 60429-2029Phone: (312) 609-0300Fax: (773) 213-0378
Registry dates
- Enumerated
- 2020-09-07
- Last updated
- 2025-07-29
- Certified
- 2025-07-29
Frequently asked questions
- What is Jacek Wesolowski's NPI number?
- Jacek Wesolowski's National Provider Identifier (NPI) is 1770197758, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jacek Wesolowski's specialty?
- Jacek Wesolowski is listed in the NPPES registry with a primary specialty of Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Jacek Wesolowski located?
- Jacek Wesolowski's practice location on file with NPPES is 4440 W 95th St Ste 1128m, Oak Lawn, IL 60453-2600.
- What is Jacek Wesolowski's phone number?
- The practice phone number listed in the NPPES registry for Jacek Wesolowski is (312) 609-0300.
- Does Jacek Wesolowski accept Medicare?
- Jacek Wesolowski is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Jacek Wesolowski's NPI active?
- Yes — Jacek Wesolowski's NPI (1770197758) is active in the NPPES registry as of the last update on 2025-07-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.