SAMANTHA REYNA CASTILLO-MALLORY DO
NPI 1376293845
Emergency Medicine in Chicago, IL
About Samantha Reyna Castillo-mallory Do NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
SAMANTHA REYNA CASTILLO-MALLORY DO (NPI 1376293845) is an individual emergency medicine provider in Chicago, Illinois, licensed in Illinois (036.180427) and active in the NPI registry since March 2022. She is enrolled in Medicare PECOS, is affiliated with Rush Oak Park Hospital, and maintains a secondary practice location in El Paso.
NPPES Registry Identity
Specialties & Licenses
Other Names 1
Secondary Practice Location 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Samantha Reyna Castillo-mallory Do 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.
Medicare Billing Reassignments
2Medicare enrollment records show Samantha Castillo-mallory reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Chicago, IL 60612
- Reassigned Medicare billing, Illinois enrollment
- Medicare enrollment name: Rush University Medical Group
- 2,169 clinicians in this Medicare group
Chicago, IL 60612
- Reassigned Medicare billing, Illinois enrollment
- 548 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Hospital Affiliations CMS Care Compare 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Rush Oak Park Hospital
Acute Care Hospitals · Oak Park, ILRush University Medical Center
Acute Care Hospitals · Chicago, ILPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 60612 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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.
CHICAGO, IL 60612
CHICAGO, IL 60612
CHICAGO, IL 60612
CHICAGO, IL 60612
CHICAGO, IL 60612
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 Samantha Castillo-mallory's NPI number?
The NPI number for Samantha Castillo-mallory is 1376293845. It was assigned to this individual provider in the NPPES registry on March 26, 2022. The provider is also known as Samantha Nicole Mallory.
Where is Samantha Castillo-mallory located?
Samantha Castillo-mallory practices at 1653 W Congress Pkwy, Chicago, IL 60612. The listed phone number is (312) 942-5000.
What is Samantha Castillo-mallory's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Samantha Castillo-mallory enrolled in Medicare?
Yes. Samantha Castillo-mallory 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.
Which organizations bill Medicare for Samantha Castillo-mallory's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Samantha Castillo-mallory reassigns Medicare benefits to 2 organizations: Rush University Medical Center (Chicago, IL) and Rush Medical Group (Chicago, IL). Each 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 Samantha Castillo-mallory's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Samantha Castillo-mallory affiliated with any hospitals?
According to CMS data, Samantha Castillo-mallory is affiliated with Rush Oak Park Hospital and Rush University Medical Center.
When was this NPI record last updated?
The NPPES record for Samantha Castillo-mallory was last updated on June 4, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 months 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.
# Samantha Reyna Castillo-Mallory, DO · NPI 1376293845
Emergency Medicine physician in Chicago, Illinois. Individual provider, active in the CMS NPPES registry since March 26, 2022.
## Identity
- **NPI:** 1376293845 (Entity type: Individual)
- **Enumerated:** March 26, 2022
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** 036.180427 (Illinois)
- **Sole proprietor:** No
## Practice location
- **Address:** 1653 W CONGRESS PKWY, Chicago, IL 60612-3833
- **Phone:** (312) 942-5000
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Rush University Medical Center (NPI 1184269425, Chicago, IL); Rush Medical Group (NPI 1467312850, Chicago, IL) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2022
## Record status
- **NPPES last updated:** June 4, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1376293845) · Data from the CMS NPPES public registry.