Penny Walker, M.D.
NPI 1659438497 · Emergency Medicine Physician · Chicago, IL
Enrolled with Medicare as Order and Referring Only - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Penny Walker, M.D. is a Emergency Medicine Physician provider in Chicago, IL (NPI 1659438497).
Provider details
- NPI number
- 1659438497
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- Yes
- License
- 4301079079 (MI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 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
- 2007-01-02
- Last updated
- 2007-07-08
Frequently asked questions
- What is Penny Walker's NPI number?
- Penny Walker's National Provider Identifier (NPI) is 1659438497, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Penny Walker's specialty?
- Penny Walker is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Penny Walker located?
- Penny Walker's practice location on file with NPPES is 111 E Wacker Dr, Chicago, IL 60601-3713.
- What is Penny Walker's phone number?
- The practice phone number listed in the NPPES registry for Penny Walker is (312) 997-6722.
- Does Penny Walker accept Medicare?
- Penny Walker is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Penny Walker's NPI active?
- Yes — Penny Walker's NPI (1659438497) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.