HAYLEY MOTOWSKI M.D.
NPI 1124688296
Internal Medicine - Critical Care Medicine in Saint Louis, MO
About Hayley Motowski M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
HAYLEY MOTOWSKI M.D. (NPI 1124688296) is an individual critical care medicine provider in Saint Louis, Missouri, licensed in Missouri (2021047388) and active in the NPI registry since June 2019. She is enrolled in Medicare PECOS, maintains 3 additional practice locations, and is a graduate of Washington University School Of Medicine (2019).
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Locations 3
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
Hayley Motowski M.d. 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 Hayley Motowski 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
- 77 clinicians in this Medicare group
Chesterfield, MO 63017
- Reassigned Medicare billing, Missouri enrollment
- 263 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 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
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 Hayley Motowski's NPI number?
The NPI number for Hayley Motowski is 1124688296. It was assigned to this individual provider in the NPPES registry on June 19, 2019.
Where is Hayley Motowski located?
Hayley Motowski practices at 615 S New Ballas Rd, Saint Louis, MO 63141. The listed phone number is (314) 251-6486.
What is Hayley Motowski's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Critical Care Medicine, with taxonomy code 207RC0200X.
Is Hayley Motowski enrolled in Medicare?
Yes. Hayley Motowski 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 Hayley Motowski's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Hayley Motowski reassigns Medicare benefits to 2 organizations: Mercy Clinic Adult Critical Care, LLC (Saint Louis, MO) and Mercy Aco Clinical Services Inc (Chesterfield, MO). 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 Hayley Motowski'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 Hayley Motowski was last updated on August 19, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.
# Hayley Motowski, M.D. · NPI 1124688296
Critical Care Medicine physician in Saint Louis, Missouri. Individual provider, active in the CMS NPPES registry since June 19, 2019.
## Identity
- **NPI:** 1124688296 (Entity type: Individual)
- **Enumerated:** June 19, 2019
- **Primary specialty:** Internal Medicine - Critical Care Medicine · taxonomy 207RC0200X
- **State license:** 2021047388 (Missouri)
- **Sole proprietor:** No
## Practice location
- **Address:** 615 S NEW BALLAS RD, Saint Louis, MO 63141-8221
- **Phone:** (314) 251-6486 · **Fax:** (314) 251-4415
## 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): Mercy Clinic Adult Critical Care, LLC (NPI 1730119421, Saint Louis, MO); Mercy Aco Clinical Services Inc (NPI 1063965093, Chesterfield, MO) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Washington University School Of Medicine, class of 2019
## Record status
- **NPPES last updated:** August 19, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1124688296) · Data from the CMS NPPES public registry.