Penny Sue Walker, M.D.
Emergency Medicine Physician · Chicago, IL
Penny Sue Walker, M.D. is an emergency medicine physician with a practice address in Chicago, Illinois, and NPI 1659438497, issued on Jan 2, 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
- Penny Sue Walker
- Credential
- M.D.
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- 4301079079 MI
Self-reported in NPPES; status is on the state search - Practice location
- 111 E Wacker Dr, Chicago, IL 60601
- Phone
- (312) 997-6722
- Enumerated
- Jan 2, 2007
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 3,291 in Illinois → Look up another NPI →
Also registered at 111 E Wacker Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Steve GillaniSpecialist1992031751
- Paul Katz, D.D.S.Dentist1801014246
Verify Penny Sue Walker 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
Penny Sue Walker among 3,291 emergency medicine physician records in Illinois
Penny Sue Walker, M.D. is one of 3,291 emergency medicine physician records with a practice address in Illinois. 80% 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 32% of them.
- NPI issued2007 · 32% of these records are older, 61% newer
- In a Medicare fileNo · 80% of these records are
- In the CMS Doctors and Clinicians fileNo · 57% 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 207P00000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
1,310 emergency medicine physician records list a practice address in Chicago
They are 1,310 of the 63,379 NPPES records with a practice address in Chicago, and 3,291 emergency medicine physician records in Illinois. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 3,291 in Illinois → Every provider in Chicago → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Kim Reed, M.D.Chicago, IL 606011114203643
- Patrick Sinclair, D.O.Chicago, IL 606011952788796
- Ryan HutchinsonChicago, IL 606051437457405
- Elif Oker, M.D.Chicago, IL 606051629294467
- Manisha Patel, DOChicago, IL 606051114048493
- Sangeeta Sakaria, M.D.Chicago, IL 606051467716381
- Maria Clarke, MDChicago, IL 606061962204545
- Bradley Hulten, M.D.Chicago, IL 606061326063736
Common questions
What is Penny Sue Walker, M.D.'s NPI number?
Penny Sue Walker, M.D.'s National Provider Identifier (NPI) is 1659438497, issued on Jan 2, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Penny Sue Walker, M.D. located?
The NPPES record lists a practice address at 111 E Wacker Dr, Chicago, IL, 60601. Phone: (312) 997-6722. Providers update this record themselves, so call before visiting.
How can I verify Penny Sue Walker, 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.