CHRISTINA GRACE THOMAS M.D.
NPI 1841529021
Pediatrics in Chicago, IL
About Christina Grace Thomas M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
CHRISTINA GRACE THOMAS M.D. (NPI 1841529021) is an individual pediatrics provider in Chicago, Illinois, licensed in Illinois (125055550) and active in the NPI registry since December 2009. She is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Christina Grace Thomas M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show Christina Thomas reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Stockton, CA 95210
- Reassigned Medicare billing, California enrollment
- 20,078 clinicians in this Medicare group
Shasta Lake, CA 96019
- Reassigned Medicare billing, California enrollment
- 54 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.
Physician 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.
CHICAG, 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 Christina Thomas's NPI number?
The NPI number for Christina Thomas is 1841529021. It was assigned to this individual provider in the NPPES registry on December 16, 2009.
Where is Christina Thomas located?
Christina Thomas practices at 1901 W Harrison St, Chicago, IL 60612. The listed phone number is (312) 864-4505.
What is Christina Thomas's specialty?
The primary specialty registered for this NPI is Pediatrics with taxonomy code 208000000X.
Is Christina Thomas enrolled in Medicare?
Yes. Christina Thomas is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Christina Thomas's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Christina Thomas reassigns Medicare benefits to 2 organizations: Permanente Medical Group Inc (Stockton, CA) and Redding Rancheria (Shasta Lake, CA). 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 Christina Thomas'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 Christina Thomas was last updated on December 16, 2009. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 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.
# Christina Grace Thomas, M.D. · NPI 1841529021
Pediatrics physician in Chicago, Illinois. Individual provider, active in the CMS NPPES registry since December 16, 2009.
## Identity
- **NPI:** 1841529021 (Entity type: Individual)
- **Enumerated:** December 16, 2009
- **Primary specialty:** Pediatrics · taxonomy 208000000X
- **State license:** 125055550 (Illinois)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 1901 W HARRISON ST, Chicago, IL 60612-3714
- **Phone:** (312) 864-4505
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **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): Permanente Medical Group Inc (NPI 1548343510, Stockton, CA); Redding Rancheria (NPI 1831724053, Shasta Lake, CA) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** December 16, 2009
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Source: [NPI Profile](https://npiprofile.com/npi/1841529021) · Data from the CMS NPPES public registry.