DR. ALYSA GAIL ELLIS MD
NPI 1528237633
Pediatrics - Pediatric Allergy/Immunology in Saint Louis, MO
About Dr. Alysa Gail Ellis Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. ALYSA GAIL ELLIS MD (NPI 1528237633) is an individual pediatric allergy/immunology provider in Saint Louis, Missouri, licensed in Missouri (2009009427) and active in the NPI registry since February 2008. She is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses 2
Other Identifiers 1
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)
Dr. Alysa Gail Ellis Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Alysa Ellis reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Saint Louis, MO 63110
- Reassigned Medicare billing, Missouri enrollment
- 628 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 63110
SAINT LOUIS, MO 63110
SAINT LOUIS, MO 63110
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 Alysa Ellis's NPI number?
The NPI number for Alysa Ellis is 1528237633. It was assigned to this individual provider in the NPPES registry on February 22, 2008.
Where is Alysa Ellis located?
Alysa Ellis practices at 1 Childrens Pl Div Ped Allergy/Immuno/Pulmo, Saint Louis, MO 63110. The listed phone number is (314) 454-2694.
What is Alysa Ellis's specialty?
The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Allergy/Immunology, with taxonomy code 2080P0201X.
Is Alysa Ellis enrolled in Medicare?
Yes. Alysa Ellis is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Alysa Ellis's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Alysa Ellis reassigns Medicare benefits to Washington University (Saint Louis, MO). 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 Alysa Ellis's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Alysa Ellis accept?
Health plans from Cox HealthPlans and UnitedHealthcare list Alysa Ellis 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 Alysa Ellis was last updated on April 17, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.
# Dr. Alysa Gail Ellis, MD · NPI 1528237633
Pediatric Allergy/Immunology physician in Saint Louis, Missouri. Individual provider, active in the CMS NPPES registry since February 22, 2008.
## Identity
- **NPI:** 1528237633 (Entity type: Individual)
- **Enumerated:** February 22, 2008
- **Primary specialty:** Pediatrics - Pediatric Allergy/Immunology · taxonomy 2080P0201X
- **State license:** 2009009427 (Missouri)
- **Sole proprietor:** No
## Practice location
- **Address:** 1 CHILDRENS PL, DIV PED ALLERGY/IMMUNO/PULMO, Saint Louis, MO 63110-1002
- **Phone:** (314) 454-2694 · **Fax:** (314) 454-2515
## 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:** Washington University (NPI 1194765685, Saint Louis, MO), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** April 17, 2025
- **Other identifiers:** Medicaid 204208201 (MO)
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Source: [NPI Profile](https://npiprofile.com/npi/1528237633) · Data from the CMS NPPES public registry.