CHELSEA MARIE THOMPSON MD
NPI 1144781485
Internal Medicine - Rheumatology in Chicago, IL
About Chelsea Marie Thompson Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
CHELSEA MARIE THOMPSON MD (NPI 1144781485) is an individual rheumatology provider in Chicago, Illinois, licensed in Illinois (036.159592) and active in the NPI registry since March 2019. She is enrolled in Medicare PECOS, is affiliated with Mt Sinai Hospital Medical Center, and is a graduate of University Of Utah School Of Medicine (2019).
NPPES Registry Identity
Specialties & Licenses 2
Accepted Insurance
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
Chelsea Marie Thompson 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.
Medicare Billing Reassignment
Medicare enrollment records show Chelsea Thompson reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Chicago, IL 60608
- Reassigned Medicare billing, Illinois enrollment
- 646 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
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Mt Sinai Hospital Medical Center
Acute Care Hospitals · Chicago, ILPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 60608 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Referred Medical Equipment & Supplies CMS DME claims 2
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
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 60608
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 Chelsea Thompson's NPI number?
The NPI number for Chelsea Thompson is 1144781485. It was assigned to this individual provider in the NPPES registry on March 28, 2019.
Where is Chelsea Thompson located?
Chelsea Thompson practices at 1500 S Fairfield Ave, Chicago, IL 60608. The listed phone number is (773) 257-6341.
What is Chelsea Thompson's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Rheumatology, with taxonomy code 207RR0500X.
Is Chelsea Thompson enrolled in Medicare?
Yes. Chelsea Thompson 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 organization bills Medicare for Chelsea Thompson's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Chelsea Thompson reassigns Medicare benefits to Mount Sinai Community Foundation (Chicago, IL). 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 Chelsea Thompson's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Chelsea Thompson accept?
Health plans from Oscar Health list Chelsea Thompson as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Chelsea Thompson affiliated with any hospitals?
According to CMS data, Chelsea Thompson is affiliated with Mt Sinai Hospital Medical Center.
When was this NPI record last updated?
The NPPES record for Chelsea Thompson was last updated on December 9, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 22 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.
# Chelsea Marie Thompson, MD · NPI 1144781485
Rheumatology physician in Chicago, Illinois. Individual provider, active in the CMS NPPES registry since March 28, 2019.
## Identity
- **NPI:** 1144781485 (Entity type: Individual)
- **Enumerated:** March 28, 2019
- **Primary specialty:** Internal Medicine - Rheumatology · taxonomy 207RR0500X
- **State license:** 036.159592 (Illinois)
- **Sole proprietor:** No
## Practice location
- **Address:** 1500 S FAIRFIELD AVE, Chicago, IL 60608
- **Phone:** (773) 257-6341 · **Fax:** (773) 257-5203
## 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:** Mount Sinai Community Foundation (NPI 1649318148, Chicago, IL), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Utah School Of Medicine, class of 2019
## Record status
- **NPPES last updated:** December 9, 2024
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Source: [NPI Profile](https://npiprofile.com/npi/1144781485) · Data from the CMS NPPES public registry.