RUTH CHACKO M.D.
NPI 1093754715
Emergency Medicine in Saint Louis, MO
About Ruth Chacko M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
RUTH CHACKO M.D. (NPI 1093754715) is an individual emergency medicine provider in Saint Louis, Missouri, licensed in Missouri (R9305) and active in the NPI registry since June 2006. She is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Ruth Chacko M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Ruth Chacko reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Washington, MO 63090
- Reassigned Medicare billing, Missouri enrollment
- 178 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 63117 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 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
SAINT LOUIS, MO 63117
SAINT LOUIS, MO 63117
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 Ruth Chacko's NPI number?
The NPI number for Ruth Chacko is 1093754715. It was assigned to this individual provider in the NPPES registry on June 6, 2006.
Where is Ruth Chacko located?
Ruth Chacko practices at 6420 Clayton Rd, Saint Louis, MO 63117. The listed phone number is (314) 768-8000.
What is Ruth Chacko's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Ruth Chacko enrolled in Medicare?
Yes. Ruth Chacko is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Ruth Chacko's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Ruth Chacko reassigns Medicare benefits to Mercy Hospitals East Communities (Washington, 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 Ruth Chacko's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Ruth Chacko was last updated on September 29, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 22 days 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.
# Ruth Chacko, M.D. · NPI 1093754715
Emergency Medicine physician in Saint Louis, Missouri. Individual provider, active in the CMS NPPES registry since June 6, 2006.
## Identity
- **NPI:** 1093754715 (Entity type: Individual)
- **Enumerated:** June 6, 2006
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** R9305 (Missouri)
- **Sole proprietor:** No
## Practice location
- **Address:** 6420 CLAYTON RD, Saint Louis, MO 63117-1811
- **Phone:** (314) 768-8000 · **Fax:** (314) 768-8011
## 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:** Mercy Hospitals East Communities (NPI 1104912997, Washington, MO), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** September 29, 2026
- **Other identifiers:** Medicaid 1093754715 (MO)
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Source: [NPI Profile](https://npiprofile.com/npi/1093754715) · Data from the CMS NPPES public registry.