1. Home
  2. Directory
  3. Illinois
  4. Chicago
  5. Internal Medicine
  6. NPI Profile

REBECCA YAO MD
NPI 1093393134
Internal Medicine in Chicago, IL

Active since March 30, 2021
5841 S MARYLAND AVE, MC4076, ROOM M410, CHICAGO, IL 60637(773) 795-1824 Get Directions Write a Review

NPPES record last updated: June 10, 2024. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Jun 10, 2024, Jun 18, 2021, Mar 30, 2021 (3 updates tracked since 2021).

About Rebecca Yao Md NPPES

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

REBECCA YAO MD (NPI 1093393134) is an individual internal medicine provider in Chicago, Illinois, licensed in Minnesota (31765) and active in the NPI registry since March 2021.

NPPES Registry Identity

NPI1093393134
Entity TypeIndividualFemale
Primary Taxonomy207R00000X
Provider Legal NameREBECCA YAOCredential: MD
Location Address5841 S MARYLAND AVE, MC4076, ROOM M410Chicago, IL 60637-1443
Mailing Address180 Harvester Dr Ste 110Burr Ridge, IL 60527-6686 · (773) 702-1150
Phone(773) 795-1824
Sole ProprietorNo
Enumeration DateMarch 30, 2021
Last NPPES UpdateJune 10, 20243 updates tracked since enumeration
NPPES CertifiedMay 24, 2024
✔ NPI 1093393134 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in MN · 31765
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
5841 S MARYLAND AVE, Chicago, IL 60637
Open in Google Maps ↗

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Rebecca Yao Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Medicare Billing Reassignment

Medicare enrollment records show Rebecca Yao reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Mayo Clinic
291 mi
Infectious Disease
200 1ST ST SW
Rochester, MN 55905
  • Reassigned Medicare billing, Minnesota enrollment
  • 6,534 clinicians in this Medicare group
NPI 1114343860 (507) 284-2511

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Other Providers at the Same Location NPPES 20

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

DR. DON MARTINEZ M.D.
Radiology (Diagnostic Radiology)
5841 S MARYLAND AVE
CHICAGO, IL 60637
Cook County (773) 926-8318
ALEXANDRA DUMITRESCU
Internal Medicine
5841 S MARYLAND AVE
CHICAGO, IL 60637
Cook County (888) 824-0200
PELEG HOROWITZ
Neurological Surgery
5841 S MARYLAND AVE
CHICAGO, IL 60637
Cook County (888) 824-0200
SANDEEP GURBUXANI
Pathology (Hematology)
5841 S MARYLAND AVE
CHICAGO, IL 60637
Cook County (888) 824-0200
DR. NIREN GANDRA M.D.
Internal Medicine
5841 S MARYLAND AVE
CHICAGO, IL 60637
Cook County (773) 702-0240
ALLIE DAKROUB MD MS
Internal Medicine
5841 S MARYLAND AVE
CHICAGO, IL 60637
Cook County (773) 702-1000
SCOTT VASHER MD
Internal Medicine (Pulmonary Disease)
5841 S MARYLAND AVE
CHICAGO, IL 60637
Cook County (773) 702-1000
DR. NATHAN CHARLES NOWALK M.D.
Internal Medicine (Pulmonary Disease)
5841 S MARYLAND AVE
CHICAGO, IL 60637
Cook County (888) 824-0200

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 Rebecca Yao's NPI number?

The NPI number for Rebecca Yao is 1093393134. It was assigned to this individual provider in the NPPES registry on March 30, 2021.

Where is Rebecca Yao located?

Rebecca Yao practices at 5841 S Maryland Ave Mc4076, Room M410, Chicago, IL 60637. The listed phone number is (773) 795-1824.

What is Rebecca Yao's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Rebecca Yao enrolled in Medicare?

Yes. Rebecca Yao is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Rebecca Yao's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Rebecca Yao reassigns Medicare benefits to Mayo Clinic (Rochester, MN). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Rebecca Yao's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Rebecca Yao was last updated on June 10, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.