Yeo Won Ahn, MD
NPI 1255912481 · Pediatrics Physician · Chicago, IL
Enrolled with Medicare as Order and Referring Only - Pediatric Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Yeo Won Ahn, MD is a Pediatrics Physician provider in Chicago, IL (NPI 1255912481).
Provider details
- NPI number
- 1255912481
- Entity type
- Individual
- Primary specialty
- Pediatrics PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- Yes
- License
- 125077982 (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
5 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
- 2021-04-19
- Last updated
- 2025-06-29
- Certified
- 2025-06-29
Frequently asked questions
- What is Yeo Won Ahn's NPI number?
- Yeo Won Ahn's National Provider Identifier (NPI) is 1255912481, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Yeo Won Ahn's specialty?
- Yeo Won Ahn is listed in the NPPES registry with a primary specialty of Pediatrics Physician (Allopathic & Osteopathic Physicians).
- Where is Yeo Won Ahn located?
- Yeo Won Ahn's practice location on file with NPPES is 5841 S Maryland Ave # Mc6054, Chicago, IL 60637-1443.
- What is Yeo Won Ahn's phone number?
- The practice phone number listed in the NPPES registry for Yeo Won Ahn is (773) 702-6176.
- Does Yeo Won Ahn accept Medicare?
- Yeo Won Ahn is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Yeo Won Ahn's NPI active?
- Yes — Yeo Won Ahn's NPI (1255912481) is active in the NPPES registry as of the last update on 2025-06-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.