Ursula Gierlachowski, M.D.
Internal Medicine Physician · Chicago, IL
Ursula Gierlachowski, M.D. is an internal medicine physician with a practice address in Chicago, Illinois, and NPI 1679629976, issued on Jan 27, 2007. Check the license on the Illinois Department of Financial and Professional Regulation; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Ursula Gierlachowski
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- Practice location
- 5332 S Archer Ave, Chicago, IL 60632
- Phone
- (773) 581-6336
- Enumerated
- Jan 27, 2007
- Record last updated
- Oct 17, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (773) 581-3638
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 7,238 in Illinois → Look up another NPI →
Verify Ursula Gierlachowski in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIllinois Department of Financial and Professional RegulationCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Ursula Gierlachowski among 7,238 internal medicine physician records in Illinois
Ursula Gierlachowski, M.D. is one of 7,238 internal medicine physician records with a practice address in Illinois. 73% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2007, is newer than 39% of them.
- NPI issued2007 · 39% of these records are older, 55% newer
- In a Medicare fileNo · 73% of these records are
- In the CMS Doctors and Clinicians fileNo · 50% of these records are
- Record last updated2007 · 47% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
2,867 internal medicine physician records list a practice address in Chicago
They are 2,867 of the 63,379 NPPES records with a practice address in Chicago, and 7,238 internal medicine physician records in Illinois. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 7,238 in Illinois → Every provider in Chicago → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- John Bylewski, MDChicago, IL 606321205931243
- Francina Peralta Machado, MDChicago, IL 606321508181108
- Sergio Rodriguez, M.D.Chicago, IL 606321588705230
- Muhammad Ahmad, M.DChicago, IL 606311467832691
- Amna Ali, MDChicago, IL 606311437737996
- Sivasubramanium Bhavani, M.D.Chicago, IL 606311114210671
- Sarwar Husain, M.D.Chicago, IL 606311215005822
- Mina Kerolos, MD, PHARM.D.Chicago, IL 606311013264936
Common questions
What is Ursula Gierlachowski, M.D.'s NPI number?
Ursula Gierlachowski, M.D.'s National Provider Identifier (NPI) is 1679629976, issued on Jan 27, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Ursula Gierlachowski, M.D. located?
The NPPES record lists a practice address at 5332 S Archer Ave, Chicago, IL, 60632. Phone: (773) 581-6336. Providers update this record themselves, so call before visiting.
How can I verify Ursula Gierlachowski, M.D.'s license?
Search the Illinois Department of Financial and Professional Regulation at https://idfpr.illinois.gov/checklicense.html. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.