MARY LEIGH STEWART-THORNTON LLMSW
NPI 1740029891
Marriage & Family Therapist in Lansing, MI
About Mary Leigh Stewart-thornton Llmsw NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARY LEIGH STEWART-THORNTON LLMSW (NPI 1740029891) is an individual marriage & family therapist in Lansing, Michigan, licensed in Michigan (6851102331) and active in the NPI registry since May 2024. She is enrolled in Medicare PECOS and is a graduate of Other (1989).
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 (PECOS)
Mary Leigh Stewart-thornton Llmsw is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Mary Stewart-thornton reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Lansing, MI 48910
- Reassigned Medicare billing, Michigan enrollment
- Medicare enrollment name: Community Mental Health Authority Of Clinton Eaton Ingham Counties
- 232 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.
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 Mary Stewart-thornton's NPI number?
The NPI number for Mary Stewart-thornton is 1740029891. It was assigned to this individual provider in the NPPES registry on May 20, 2024.
Where is Mary Stewart-thornton located?
Mary Stewart-thornton practices at 1213 New York Ave, Lansing, MI 48906. The listed phone number is (517) 243-4780.
What is Mary Stewart-thornton's specialty?
The primary specialty registered for this NPI is Marriage & Family Therapist with taxonomy code 106H00000X.
Is Mary Stewart-thornton enrolled in Medicare?
Yes. Mary Stewart-thornton is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Mary Stewart-thornton's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mary Stewart-thornton reassigns Medicare benefits to Community Mental Health Authority Clinton Eaton Ingham Counties (Lansing, MI). 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 Mary Stewart-thornton's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Mary Stewart-thornton accept?
Health plans from Blue Care Network of Michigan, Blue Cross Blue Shield of Michigan Mutual Insurance Company, Oscar Insurance Company, Priority Health and UnitedHealthcare list Mary Stewart-thornton 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 Mary Stewart-thornton was last updated on May 20, 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.
# Mary Leigh Stewart-Thornton, LLMSW · NPI 1740029891
Marriage & Family Therapist provider in Lansing, Michigan. Individual provider, active in the CMS NPPES registry since May 20, 2024.
## Identity
- **NPI:** 1740029891 (Entity type: Individual)
- **Enumerated:** May 20, 2024
- **Primary specialty:** Marriage & Family Therapist · taxonomy 106H00000X
- **State license:** 6851102331 (Michigan)
- **Sole proprietor:** No
## Practice location
- **Address:** 1213 NEW YORK AVE, Lansing, MI 48906-4535
- **Phone:** (517) 243-4780
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment
- **Bills Medicare through:** Community Mental Health Authority Clinton Eaton Ingham Counties (NPI 1265483457, Lansing, MI), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1989
## Record status
- **NPPES last updated:** May 20, 2024
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Source: [NPI Profile](https://npiprofile.com/npi/1740029891) · Data from the CMS NPPES public registry.