GRACE TRISKA DO
NPI 1144807975
Internal Medicine in Saint Louis, MO
About Grace Triska Do NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
GRACE TRISKA DO (NPI 1144807975) is an individual internal medicine provider in Saint Louis, Missouri, licensed in Missouri (2025031087) and active in the NPI registry since March 2021. She is enrolled in Medicare PECOS, is affiliated with Mercy Hospital St Louis, and maintains a secondary practice location in Detroit.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 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 and accepts Medicare assignment
Grace Triska Do is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
2Medicare enrollment records show Grace Triska reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Saint Louis, MO 63141
- Reassigned Medicare billing, Missouri enrollment
- 611 clinicians in this Medicare group
Southfield, MI 48075
- Reassigned Medicare billing, Michigan enrollment
- Medicare enrollment name: Henry Ford Health St. John Hospital
- 520 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.
Areas of Expertise CMS Part B claims 2
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare 5
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Mercy Hospital St Louis
Acute Care Hospitals · Saint Louis, MOBarnes Jewish Hospital
Acute Care Hospitals · Saint Louis, MOMissouri Baptist Medical Center
Acute Care Hospitals · Town And Country, MOBarnes-Jewish West County Hospital
Acute Care Hospitals · Creve Coeur, MOBarnes-Jewish St Peters Hospital
Acute Care Hospitals · Saint Peters, MOPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 63141 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 63141
SAINT LOUIS, MO 63141
SAINT LOUIS, MO 63141
SAINT LOUIS, MO 63141
SAINT LOUIS, MO 63141
SAINT LOUIS, MO 63141
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 Grace Triska's NPI number?
The NPI number for Grace Triska is 1144807975. It was assigned to this individual provider in the NPPES registry on March 26, 2021.
Where is Grace Triska located?
Grace Triska practices at 969 N Mason Rd, Saint Louis, MO 63141. The listed phone number is (314) 996-3434.
What is Grace Triska's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Grace Triska enrolled in Medicare?
Yes. Grace Triska is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Grace Triska's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Grace Triska reassigns Medicare benefits to 2 organizations: Physician Groups Lc (Saint Louis, MO) and Ascension St John Hospital (Southfield, MI). 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 Grace Triska's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Grace Triska accept?
Health plans from UnitedHealthcare list Grace Triska 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.
Is Grace Triska affiliated with any hospitals?
According to CMS data, Grace Triska is affiliated with Mercy Hospital St Louis, Barnes Jewish Hospital, Missouri Baptist Medical Center, Barnes-Jewish West County Hospital and Barnes-Jewish St Peters Hospital.
When was this NPI record last updated?
The NPPES record for Grace Triska was last updated on September 17, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.
# Grace Triska, DO · NPI 1144807975
Internal Medicine physician in Saint Louis, Missouri. Individual provider, active in the CMS NPPES registry since March 26, 2021.
## Identity
- **NPI:** 1144807975 (Entity type: Individual)
- **Enumerated:** March 26, 2021
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** 2025031087 (Missouri)
- **Sole proprietor:** No
## Practice location
- **Address:** 969 N MASON RD, Saint Louis, MO 63141-6282
- **Phone:** (314) 996-3434 · **Fax:** (314) 996-3435
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **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): Physician Groups Lc (NPI 1285664268, Saint Louis, MO); Ascension St John Hospital (NPI 1922397058, Southfield, MI) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2021
## Record status
- **NPPES last updated:** September 17, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1144807975) · Data from the CMS NPPES public registry.