MERCY EAST AMBULATORY SERVICES LLC
NPI 1134673148
Clinic/Center - Urgent Care in Chesterfield, MO
About Mercy East Ambulatory Services Llc NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MERCY EAST AMBULATORY SERVICES LLC (NPI 1134673148), doing business as Mercy-gohealth Urgent Care, is a healthcare organization registered as an urgent care in Chesterfield, Missouri and active in the NPI registry since August 2016. The organization lists Jill Mccart, Vp - Accounting, as its authorized official.
NPPES Registry Identity
Specialties & Licenses
Other Names 2
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Mercy East Ambulatory Services Llc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Clinicians Billing Medicare Through This Organization
169Medicare enrollment records show 169 clinicians reassign Medicare billing to Mercy East Ambulatory Services LLC, which bills Medicare for the services they deliver. Of these, 5 practice at this address and 46 within 10 miles. Listed here are the 20 practicing nearest to this location.
Clinicians by Medicare Specialty 6
Nearest to this location (20)
See all 169Saint Louis, MO 63131
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 Mercy East Ambulatory Services LLC's NPI number?
The NPI number for Mercy East Ambulatory Services LLC is 1134673148. It was assigned to this organization in the NPPES registry on August 8, 2016. The provider is doing business as Mercy-GoHealth Urgent Care. The provider is also known as Mercy Urgent Care.
Where is Mercy East Ambulatory Services LLC located?
Mercy East Ambulatory Services LLC is located at 1722 Clarkson Rd, Chesterfield, MO 63017. The listed phone number is (636) 206-2665.
What is Mercy East Ambulatory Services LLC's specialty?
The primary specialty registered for this NPI is Clinic/Center, specializing in Urgent Care, with taxonomy code 261QU0200X.
Is Mercy East Ambulatory Services LLC enrolled in Medicare?
Yes. Mercy East Ambulatory Services LLC is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Mercy East Ambulatory Services LLC?
According to the CMS Revalidation Reassignment List (October 2026 release), 169 clinicians in 6 Medicare specialties reassign their Medicare billing to Mercy East Ambulatory Services LLC. A 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 the clinician's services. The largest specialties are Nurse Practitioner (109), Family Practice (39) and Emergency Medicine (14). Of these, 5 practice at this address and 46 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
What insurance does Mercy East Ambulatory Services LLC accept?
Health plans from Ambetter Health, Ambetter Health of Delaware, Ambetter from Arkansas Health & Wellness, Ambetter from Sunflower Health Plan and Ambetter of Oklahoma and 3 other insurers list Mercy East Ambulatory Services LLC 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 Mercy East Ambulatory Services LLC was last updated on April 30, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 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.
# Mercy East Ambulatory Services Llc · NPI 1134673148
Urgent Care organization in Chesterfield, Missouri. Organization record, active in the CMS NPPES registry since August 8, 2016.
## Identity
- **NPI:** 1134673148 (Entity type: Organization)
- **Enumerated:** August 8, 2016
- **Primary specialty:** Clinic/Center - Urgent Care · taxonomy 261QU0200X
- **Also known as:** Mercy-GoHealth Urgent Care (Doing Business As); Mercy Urgent Care (Other Name)
- **Organization subpart:** No
- **Authorized official:** Jill Mccart, VP - ACCOUNTING
## Practice location
- **Address:** 1722 CLARKSON RD, Chesterfield, MO 63017-4976
- **Phone:** (636) 206-2665 · **Fax:** (636) 206-2664
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 169 clinicians in 6 Medicare specialties reassign Medicare billing to this organization (form CMS-855R); largest: Nurse Practitioner (109), Family Practice (39), Emergency Medicine (14); 5 practice at this address and 46 within 10 miles; [full list](https://npiprofile.com/npi/1134673148/clinicians) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** April 30, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1134673148) · Data from the CMS NPPES public registry.