Andrzej Gacek Medical , LLC
NPI 1225206782 · Internal Medicine Physician · Chicago, IL
Enrolled with Medicare as Part B Supplier - Clinic/Group Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Andrzej Gacek Medical , LLC is a Internal Medicine Physician organization in Chicago, IL (NPI 1225206782).
Provider details
- NPI number
- 1225206782
- Entity type
- Organization
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Andrzej Gacek, Billing(847) 444-0553
- License
- 036117533 (IL)
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
18 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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2008-02-18
- Last updated
- 2009-03-02
Frequently asked questions
- What is Andrzej Gacek Medical , LLC's NPI number?
- Andrzej Gacek Medical , LLC's National Provider Identifier (NPI) is 1225206782, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Andrzej Gacek Medical , LLC?
- Andrzej Gacek Medical , LLC is classified in the NPPES registry as Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Andrzej Gacek Medical , LLC located?
- Andrzej Gacek Medical , LLC's practice location on file with NPPES is 5901 N Milwaukee Ave, Chicago, IL 60646-5443.
- What is Andrzej Gacek Medical , LLC's phone number?
- The practice phone number listed in the NPPES registry for Andrzej Gacek Medical , LLC is (773) 631-1300.
- Does Andrzej Gacek Medical , LLC accept Medicare?
- Andrzej Gacek Medical , LLC is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Who is the authorized official for Andrzej Gacek Medical , LLC?
- The authorized official listed on Andrzej Gacek Medical , LLC's NPPES record is Andrzej Gacek, Billing. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Andrzej Gacek Medical , LLC's NPI active?
- Yes — Andrzej Gacek Medical , LLC's NPI (1225206782) is active in the NPPES registry as of the last update on 2009-03-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.