ALEXIS HAAS STEWART
NPI 1003568221
Anesthesiologist Assistant in Saint Louis, MO
About Alexis Haas Stewart NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ALEXIS HAAS STEWART (NPI 1003568221) is an individual anesthesiologist assistant in Saint Louis, Missouri and active in the NPI registry since January 2022. She is a graduate of University Of Missouri, Kansas City, School Of Medicine (2022).
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
Alexis Haas Stewart 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 Alexis Stewart reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Saint Louis, MO 63110
- Reassigned Medicare billing, Missouri enrollment
- 142 clinicians in this Medicare group
Saint Louis, MO 63104
- Reassigned Medicare billing, Missouri enrollment
- 1,294 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.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
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.
SAINT LOUIS, MO 63104
SAINT LOUIS, MO 63104
ST.LOUIS, MO 63104
SAINT LOUIS, MO 63104
SAINT LOUIS, MO 63104
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 Alexis Stewart's NPI number?
The NPI number for Alexis Stewart is 1003568221. It was assigned to this individual provider in the NPPES registry on January 19, 2022.
Where is Alexis Stewart located?
Alexis Stewart practices at 1465 S Grand Blvd, Saint Louis, MO 63104. The listed phone number is (314) 977-5700.
What is Alexis Stewart's specialty?
The primary specialty registered for this NPI is Anesthesiologist Assistant with taxonomy code 367H00000X.
Is Alexis Stewart enrolled in Medicare?
Yes. Alexis Stewart 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 Alexis Stewart's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Alexis Stewart reassigns Medicare benefits to 2 organizations: Ssm Health Slu Hospital Anesthesia Physician Billing, LLC (Saint Louis, MO) and Ssm Health Care Group (Saint Louis, MO). 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 Alexis Stewart's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Alexis Stewart accept?
Health plans from Anthem Blue Cross and Blue Shield list Alexis Stewart 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 Alexis Stewart was last updated on January 22, 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.
# Alexis Haas Stewart · NPI 1003568221
Anesthesiologist Assistant physician in Saint Louis, Missouri. Individual provider, active in the CMS NPPES registry since January 19, 2022.
## Identity
- **NPI:** 1003568221 (Entity type: Individual)
- **Enumerated:** January 19, 2022
- **Primary specialty:** Anesthesiologist Assistant · taxonomy 367H00000X
- **Sole proprietor:** No
## Practice location
- **Address:** 1465 S GRAND BLVD, Saint Louis, MO 63104-1003
- **Phone:** (314) 977-5700
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Ssm Health Slu Hospital Anesthesia Physician Billing, LLC (NPI 1407232804, Saint Louis, MO); Ssm Health Care Group (NPI 1306589544, Saint Louis, MO) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Missouri, Kansas City, School Of Medicine, class of 2022
## Record status
- **NPPES last updated:** January 22, 2024
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Source: [NPI Profile](https://npiprofile.com/npi/1003568221) · Data from the CMS NPPES public registry.