MERCY CLINIC GASTROENTEROLOGY, LLC
NPI 1528295334
Internal Medicine - Gastroenterology in Saint Louis, MO
About Mercy Clinic Gastroenterology, Llc NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MERCY CLINIC GASTROENTEROLOGY, LLC (NPI 1528295334), doing business as St Johns Mercy Gastroenterology Specialists, is a healthcare organization registered as a gastroenterology in Saint Louis, Missouri and active in the NPI registry since June 2009. The organization lists Jonathan Tyler Sturgeon, Cfo, as its authorized official.
NPPES Registry Identity
Specialties & Licenses
Other Names 1
Group Practice 1
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 Clinic Gastroenterology, Llc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Clinicians Billing Medicare Through This Organization
69Medicare enrollment records show 69 clinicians reassign Medicare billing to Mercy Clinic Gastroenterology, LLC, which bills Medicare for the services they deliver. Of these, 3 practice at this address and 29 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 69Saint Louis, MO 63141
Saint Louis, MO 63141
Saint Louis, MO 63141
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 Clinic Gastroenterology, LLC's NPI number?
The NPI number for Mercy Clinic Gastroenterology, LLC is 1528295334. It was assigned to this organization in the NPPES registry on June 18, 2009. The provider was formerly known as St Johns Mercy Gastroenterology Specialists.
Where is Mercy Clinic Gastroenterology, LLC located?
Mercy Clinic Gastroenterology, LLC is located at 621 S New Ballas Rd Suite 437-A, Saint Louis, MO 63141. The listed phone number is (314) 251-3880.
What is Mercy Clinic Gastroenterology, LLC's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.
Is Mercy Clinic Gastroenterology, LLC enrolled in Medicare?
Yes. Mercy Clinic Gastroenterology, LLC is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Mercy Clinic Gastroenterology, LLC?
According to the CMS Revalidation Reassignment List (October 2026 release), 69 clinicians in 6 Medicare specialties reassign their Medicare billing to Mercy Clinic Gastroenterology, 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 Gastroenterology (47), Nurse Practitioner (14) and Internal Medicine (3). Of these, 3 practice at this address and 29 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
What insurance does Mercy Clinic Gastroenterology, 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 2 other insurers list Mercy Clinic Gastroenterology, 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 Clinic Gastroenterology, LLC was last updated on February 19, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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 Clinic Gastroenterology, Llc · NPI 1528295334
Gastroenterology organization in Saint Louis, Missouri. Organization record, active in the CMS NPPES registry since June 18, 2009.
## Identity
- **NPI:** 1528295334 (Entity type: Organization)
- **Enumerated:** June 18, 2009
- **Primary specialty:** Internal Medicine - Gastroenterology · taxonomy 207RG0100X
- **Also known as:** St Johns Mercy Gastroenterology Specialists (Former Legal Business Name)
- **Organization subpart:** Yes (part of Mercy Clinic East Communities)
- **Authorized official:** Jonathan Sturgeon, CFO
## Practice location
- **Address:** 621 S NEW BALLAS RD, SUITE 437-A, Saint Louis, MO 63141-8232
- **Phone:** (314) 251-3880 · **Fax:** (314) 251-3885
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 69 clinicians in 6 Medicare specialties reassign Medicare billing to this organization (form CMS-855R); largest: Gastroenterology (47), Nurse Practitioner (14), Internal Medicine (3); 3 practice at this address and 29 within 10 miles; [full list](https://npiprofile.com/npi/1528295334/clinicians) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** February 19, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1528295334) · Data from the CMS NPPES public registry.