Yen-Yen Gee, MD
NPI 1558986943 · Anesthesiology Physician · Chicago, IL
Enrolled with Medicare as Practitioner - Anesthesiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Yen-Yen Gee, MD is a Anesthesiology Physician provider in Chicago, IL (NPI 1558986943).
Provider details
- NPI number
- 1558986943
- Entity type
- Individual
- Primary specialty
- Anesthesiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- Yes
- License
- 125077017 (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
6 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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
Additional practice locations (1)
- 5841 S Maryland Ave # Mc4028Chicago, IL 60637-1443Phone: (773) 702-6842
Registry dates
- Enumerated
- 2020-06-10
- Last updated
- 2025-08-21
- Certified
- 2025-08-21
Frequently asked questions
- What is Yen-Yen Gee's NPI number?
- Yen-Yen Gee's National Provider Identifier (NPI) is 1558986943, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Yen-Yen Gee's specialty?
- Yen-Yen Gee is listed in the NPPES registry with a primary specialty of Anesthesiology Physician (Allopathic & Osteopathic Physicians).
- Where is Yen-Yen Gee located?
- Yen-Yen Gee's practice location on file with NPPES is 251 E Huron St Ste Feinberg, Chicago, IL 60611-2908.
- What is Yen-Yen Gee's phone number?
- The practice phone number listed in the NPPES registry for Yen-Yen Gee is (312) 695-0061.
- Does Yen-Yen Gee accept Medicare?
- Yen-Yen Gee is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Yen-Yen Gee's NPI active?
- Yes — Yen-Yen Gee's NPI (1558986943) is active in the NPPES registry as of the last update on 2025-08-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.