GRETTA LEIGH
NPI 1023996386
Occupational Therapist in Chicago, IL
About Gretta Leigh NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
GRETTA LEIGH (NPI 1023996386) is an individual occupational therapist in Chicago, Illinois, licensed in Illinois (056.016099) and active in the NPI registry since August 2025. She is a graduate of Other (2024).
NPPES Registry Identity
Specialties & Licenses
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
Gretta Leigh 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 Gretta Leigh reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Chicago, IL 60612
- Reassigned Medicare billing, Illinois enrollment
- 228 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.
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
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 Gretta Leigh's NPI number?
The NPI number for Gretta Leigh is 1023996386. It was assigned to this individual provider in the NPPES registry on August 25, 2025.
Where is Gretta Leigh located?
Gretta Leigh practices at 1725 W Harrison St Ste 440, Chicago, IL 60612. The listed phone number is (312) 563-2454.
What is Gretta Leigh's specialty?
The primary specialty registered for this NPI is Occupational Therapist with taxonomy code 225X00000X.
Is Gretta Leigh enrolled in Medicare?
Yes. Gretta Leigh 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 Gretta Leigh's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Gretta Leigh reassigns Medicare benefits to Rci (wrs), LLC (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 Gretta Leigh's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Gretta Leigh accept?
Health plans from Oscar Health list Gretta Leigh 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.
When was this NPI record last updated?
The NPPES record for Gretta Leigh was last updated on September 6, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.