MERCY CLINIC ADULT CRITICAL CARE, LLC
NPI 1730119421
Internal Medicine - Critical Care Medicine in Saint Louis, MO
About Mercy Clinic Adult Critical Care, Llc NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MERCY CLINIC ADULT CRITICAL CARE, LLC (NPI 1730119421), doing business as St. John's Mercy Adult Critical Care, is a healthcare organization registered as a critical care medicine in Saint Louis, Missouri and active in the NPI registry since July 2006. The organization maintains 2 additional practice locations and lists Kerry Dunger, Executive Director - Finance, as its authorized official.
NPPES Registry Identity
Specialties & Licenses
Other Names 1
Secondary Practice Locations 2
Other Identifiers 1
Group Practice 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, revalidation and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Mercy Clinic Adult Critical Care, Llc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Revalidation Due Date
Revalidation due by March 31, 2027
Medicare-enrolled providers and suppliers confirm their enrollment information with CMS on a set cycle, every 5 years for most and every 3 years for medical equipment suppliers. CMS sets the due date for each enrollment.
Clinicians Billing Medicare Through This Organization
77Medicare enrollment records show 77 clinicians reassign Medicare billing to Mercy Clinic Adult Critical Care, LLC, which bills Medicare for the services they deliver. Of these, 15 practice at this address and 42 within 10 miles. Listed here are the 20 practicing nearest to this location.
Clinicians by Medicare Specialty 8
Nearest to this location (20)
See all 77Saint Louis, MO 63141
Saint Louis, MO 63141
Saint Louis, MO 63141
Saint 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 Adult Critical Care, LLC's NPI number?
The NPI number for Mercy Clinic Adult Critical Care, LLC is 1730119421. It was assigned to this organization in the NPPES registry on July 5, 2006. The provider was formerly known as St. John's Mercy Adult Critical Care.
Where is Mercy Clinic Adult Critical Care, LLC located?
Mercy Clinic Adult Critical Care, LLC is located at 621 S New Ballas Rd Suite 4006-B, Saint Louis, MO 63141. The listed phone number is (314) 251-6486.
What is Mercy Clinic Adult Critical Care, LLC's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Critical Care Medicine, with taxonomy code 207RC0200X.
Is Mercy Clinic Adult Critical Care, LLC enrolled in Medicare?
Yes. Mercy Clinic Adult Critical Care, LLC is registered in the Medicare PECOS enrollment system.
When is Mercy Clinic Adult Critical Care, LLC's Medicare revalidation due?
According to the CMS Revalidation Due Date List (October 2026 release), the Medicare Non-DME Part B enrollment for this organization (Missouri, Clinic/Group Practice) is due for revalidation by March 31, 2027. Medicare providers and suppliers revalidate their enrollment every 5 years, and medical equipment suppliers every 3 years. Confirm current requirements with your Medicare Administrative Contractor.
How many clinicians bill Medicare through Mercy Clinic Adult Critical Care, LLC?
According to the CMS Revalidation Reassignment List (October 2026 release), 77 clinicians in 8 Medicare specialties reassign their Medicare billing to Mercy Clinic Adult Critical Care, 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 (26), Critical Care (Intensivists) (24) and Internal Medicine (17). Of these, 15 practice at this address and 42 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
What insurance does Mercy Clinic Adult Critical Care, LLC accept?
Health plans from Anthem Blue Cross and Blue Shield and Medica list Mercy Clinic Adult Critical Care, 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 Adult Critical Care, LLC was last updated on April 25, 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.
# Mercy Clinic Adult Critical Care, Llc · NPI 1730119421
Critical Care Medicine organization in Saint Louis, Missouri. Organization record, active in the CMS NPPES registry since July 5, 2006.
## Identity
- **NPI:** 1730119421 (Entity type: Organization)
- **Enumerated:** July 5, 2006
- **Primary specialty:** Internal Medicine - Critical Care Medicine · taxonomy 207RC0200X
- **Also known as:** St. John's Mercy Adult Critical Care (Former Legal Business Name)
- **Organization subpart:** Yes (part of Mercy Hospitals East Communities)
- **Authorized official:** Kerry Dunger, EXECUTIVE DIRECTOR - FINANCE
## Practice location
- **Address:** 621 S NEW BALLAS RD, SUITE 4006-B, Saint Louis, MO 63141-8232
- **Phone:** (314) 251-6486 · **Fax:** (314) 251-4155
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Medicare revalidation due:** March 31, 2027 (Non-DME Part B, Missouri, Clinic/Group Practice) · CMS Revalidation Due Date List, October 2026 release
- **Clinicians billing through this organization:** 77 clinicians in 8 Medicare specialties reassign Medicare billing to this organization (form CMS-855R); largest: Nurse Practitioner (26), Critical Care (Intensivists) (24), Internal Medicine (17); 15 practice at this address and 42 within 10 miles; [full list](https://npiprofile.com/npi/1730119421/clinicians) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** April 25, 2025
- **Other identifiers:** Medicaid 505997106 (MO)
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Source: [NPI Profile](https://npiprofile.com/npi/1730119421) · Data from the CMS NPPES public registry.