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YEN-YEN SUSANNA GEE MD
NPI 1558986943
Anesthesiology in Chicago, IL

Active since June 10, 2020PECOS EnrolledAccepts Medicare Assignment
251 E HURON ST STE FEINBERG, CHICAGO, IL 60611(312) 695-0061(312) 695-9013 Get Directions Write a Review

NPPES record last updated: August 21, 2025. Verified against the NPPES registry weekly; last sync: July 26, 2026.

About Yen-yen Susanna Gee Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

YEN-YEN SUSANNA GEE MD (NPI 1558986943) is an individual anesthesiology provider in Chicago, Illinois, licensed in Illinois (125077017) and active in the NPI registry since June 2020. She is enrolled in Medicare PECOS, is affiliated with Northwestern Memorial Hospital, and maintains a secondary practice location in Chicago.

NPPES Registry Identity

NPI1558986943
Entity TypeIndividualFemale
Primary Taxonomy207L00000X
Provider Legal NameYEN-YEN SUSANNA GEECredential: MD
Location Address251 E HURON ST STE FEINBERGChicago, IL 60611-2908
Mailing Address251 E Huron St Ste FeinbergChicago, IL 60611-2908 · (312) 695-0061 · Fax (312) 695-9013
Phone(312) 695-0061
Fax(312) 695-9013
Sole ProprietorYes
Medical School CMSUniversity Of Toronto, Faculty Of MedicineGraduated 2020
Enumeration DateJune 10, 2020
Last NPPES UpdateAugust 21, 2025
NPPES CertifiedAugust 21, 2025
✔ NPI 1558986943 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyAnesthesiologyAllopathic & Osteopathic Physicians
Taxonomy Code207L00000X
License✔ Licensed in IL · 125077017
Definition
An anesthesiologist is trained to provide pain relief and maintenance, or restoration, of a stable condition during and immediately following an operation or an obstetric or diagnostic procedure. The anesthesiologist assesses the risk of the patient undergoing surgery and optimizes the patient's condition prior to, during and after surgery. In addition to these management responsibilities, the anesthesiologist provides medical management and consultation in pain management and critical care medicine. Anesthesiologists diagnose and treat acute, long-standing and cancer pain problems; diagnose and treat patients with critical illnesses or severe injuries; direct resuscitation in the care of patients with cardiac or respiratory emergencies, including the need for artificial ventilation; and supervise post-anesthesia recovery.
251 E HURON ST STE FEINBERG, Chicago, IL 60611
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Secondary Practice Location 1

Location 15841 S Maryland Ave # Mc4028Chicago, IL 60637-1443 · Phone (773) 702-6842

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Yen-yen Susanna Gee Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID7113341603
PECOS Enrollment IDI20250924002154
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Northwestern Memorial Hospital

Acute Care Hospitals · Chicago, IL
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number140281
Location251 E Huron StChicago, IL 60611 · Cook County
Emergency services Birthing friendly

Other Providers at the Same Location NPPES 4

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

GREGORY R SMITH M.D.
Hospitalist
251 E HURON ST STE FEINBERG
CHICAGO, IL 60611
Cook County (312) 926-5924
SIEW MAY WANG MD
Hospitalist
251 E HURON ST STE FEINBERG
CHICAGO, IL 60611
Cook County (312) 926-5924
QUOC-DUY M DINH MD
Internal Medicine (Hospice and Palliative Medicine)
251 E HURON ST STE FEINBERG
CHICAGO, IL 60611
Cook County (312) 926-5924
FEYCE M PERALTA M.D.
Anesthesiology
251 E HURON ST STE FEINBERG
CHICAGO, IL 60611
Cook County (312) 695-0061

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Yen-yen Gee's NPI number?

The NPI number for Yen-yen Gee is 1558986943. It was assigned to this individual provider in the NPPES registry on June 10, 2020.

Where is Yen-yen Gee located?

Yen-yen Gee practices at 251 E Huron St Ste Feinberg, Chicago, IL 60611. The listed phone number is (312) 695-0061.

What is Yen-yen Gee's specialty?

The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.

Is Yen-yen Gee enrolled in Medicare?

Yes. Yen-yen Gee is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Is Yen-yen Gee affiliated with any hospitals?

According to CMS data, Yen-yen Gee is affiliated with Northwestern Memorial Hospital.

When was this NPI record last updated?

The NPPES record for Yen-yen Gee was last updated on August 21, 2025. NPI Profile syncs with the weekly NPPES data releases published by CMS.