DONALD OSMACK
NPI 1376889410
Nurse Practitioner - Family in Barnhart, MO
About Donald Osmack NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DONALD OSMACK (NPI 1376889410) is an individual family provider in Barnhart, Missouri, licensed in Missouri (2012032344) and active in the NPI registry since December 2012. He is enrolled in Medicare PECOS, is affiliated with St Lukes Hospital, and is a graduate of Other (2012).
NPPES Registry Identity
Specialties & Licenses
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
Donald Osmack 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 Donald Osmack reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Chesterfield, MO 63017
- Reassigned Medicare billing, Missouri enrollment
- Medicare enrollment name: Emergency Physicians Of St Lukes LLC
- 124 clinicians in this Medicare group
Creve Coeur, MO 63141
- Reassigned Medicare billing, Missouri enrollment
- Medicare enrollment name: St. Luke's Immediate Care, LLC
- 48 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 5
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
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
St Lukes Hospital
Acute Care Hospitals · Chesterfield, MOPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 63012 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Other Providers at the Same Location NPPES 10
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
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 Donald Osmack's NPI number?
The NPI number for Donald Osmack is 1376889410. It was assigned to this individual provider in the NPPES registry on December 18, 2012.
Where is Donald Osmack located?
Donald Osmack practices at 1718 Catlin Dr, Barnhart, MO 63012. The listed phone number is (866) 825-3227.
What is Donald Osmack's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.
Is Donald Osmack enrolled in Medicare?
Yes. Donald Osmack 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 Donald Osmack's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Donald Osmack reassigns Medicare benefits to 2 organizations: Emergency Physicians Of St. Luke's, LLC (Chesterfield, MO) and St Lukes Immediate Care LLC (Creve Coeur, 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 Donald Osmack's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Donald Osmack accept?
Health plans from Oscar Insurance Company list Donald Osmack 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 Donald Osmack affiliated with any hospitals?
According to CMS data, Donald Osmack is affiliated with St Lukes Hospital.
When was this NPI record last updated?
The NPPES record for Donald Osmack was last updated on December 18, 2012. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 years 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.
# Donald Osmack · NPI 1376889410
Family physician in Barnhart, Missouri. Individual provider, active in the CMS NPPES registry since December 18, 2012.
## Identity
- **NPI:** 1376889410 (Entity type: Individual)
- **Enumerated:** December 18, 2012
- **Primary specialty:** Nurse Practitioner - Family · taxonomy 363LF0000X
- **State license:** 2012032344 (Missouri)
- **Sole proprietor:** No
## Practice location
- **Address:** 1718 CATLIN DR, Barnhart, MO 63012-1277
- **Phone:** (866) 825-3227
## 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): Emergency Physicians Of St. Luke's, LLC (NPI 1215359815, Chesterfield, MO); St Lukes Immediate Care LLC (NPI 1679426514, Creve Coeur, MO) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2012
## Record status
- **NPPES last updated:** December 18, 2012
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Source: [NPI Profile](https://npiprofile.com/npi/1376889410) · Data from the CMS NPPES public registry.