ALYSSA ANN FAIRCHILD CPNP-PC
NPI 1720610355
Nurse Practitioner - Pediatrics in O Fallon, MO
About Alyssa Ann Fairchild Cpnp-pc NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ALYSSA ANN FAIRCHILD CPNP-PC (NPI 1720610355) is an individual pediatrics provider in O Fallon, Missouri, licensed in Missouri (2016020031) and active in the NPI registry since February 2020. She is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses 2
Other Names 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)
Alyssa Ann Fairchild Cpnp-pc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show Alyssa Fairchild reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Ballwin, MO 63011
- Reassigned Medicare billing, Missouri enrollment
- 744 clinicians in this Medicare group
Saint Louis, MO 63139
- Reassigned Medicare billing, Missouri enrollment
- Medicare enrollment name: Ssm Cardinal Glennon Children's Hospital
- 414 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 63366 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 2
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
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 Alyssa Fairchild's NPI number?
The NPI number for Alyssa Fairchild is 1720610355. It was assigned to this individual provider in the NPPES registry on February 11, 2020. The provider is also known as Alyssa Ann Faust Cpnp-Pc.
Where is Alyssa Fairchild located?
Alyssa Fairchild practices at 300 Winding Woods Dr Ste 120, O Fallon, MO 63366. The listed phone number is (636) 978-7902.
What is Alyssa Fairchild's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Pediatrics, with taxonomy code 363LP0200X.
Is Alyssa Fairchild enrolled in Medicare?
Yes. Alyssa Fairchild is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Alyssa Fairchild's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Alyssa Fairchild reassigns Medicare benefits to 2 organizations: Mercy Clinic East Communities (Ballwin, MO) and Ssm Cardinal Glennon Childrens Hospital (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 Alyssa Fairchild's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Alyssa Fairchild accept?
Health plans from Anthem Blue Cross and Blue Shield and UnitedHealthcare list Alyssa Fairchild 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 Alyssa Fairchild was last updated on July 31, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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.
# Alyssa Ann Fairchild, CPNP-PC · NPI 1720610355
Pediatrics physician in O Fallon, Missouri. Individual provider, active in the CMS NPPES registry since February 11, 2020.
## Identity
- **NPI:** 1720610355 (Entity type: Individual)
- **Enumerated:** February 11, 2020
- **Primary specialty:** Nurse Practitioner - Pediatrics · taxonomy 363LP0200X
- **State license:** 2016020031 (Missouri)
- **Sole proprietor:** No
## Practice location
- **Address:** 300 WINDING WOODS DR STE 120, O Fallon, MO 63366-4772
- **Phone:** (636) 978-7902
## 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): Mercy Clinic East Communities (NPI 1700370061, Ballwin, MO); Ssm Cardinal Glennon Childrens Hospital (NPI 1073568226, Saint Louis, MO) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** July 31, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1720610355) · Data from the CMS NPPES public registry.