DR. JOSHUA ROBERT NAST DO
NPI 1801231006
Emergency Medicine in Saint Louis, MO
About Dr. Joshua Robert Nast Do NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. JOSHUA ROBERT NAST DO (NPI 1801231006) is an individual emergency medicine provider in Saint Louis, Missouri, licensed in Missouri (2016028969) and active in the NPI registry since May 2013. He is enrolled in Medicare PECOS, is affiliated with Mercy Hospital South, and is a graduate of Kansas City University Of Med & Biosciences, College Of Osteo Med (2012).
NPPES Registry Identity
Specialties & Licenses
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
Dr. Joshua Robert Nast 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
8Medicare enrollment records show Joshua Nast reassigns Medicare billing to 8 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Saint Louis, MO 63128
- Reassigned Medicare billing, Missouri enrollment
- 269 clinicians in this Medicare group
Saint Louis, MO 63128
- Reassigned Medicare billing, Missouri enrollment
- 186 clinicians in this Medicare group
Saint Louis, MO 63141
- Reassigned Medicare billing, Missouri enrollment
- 241 clinicians in this Medicare group
Festus, MO 63028
- Reassigned Medicare billing, Missouri enrollment
- 118 clinicians in this Medicare group
Alton, IL 62002
- Reassigned Medicare billing, Missouri enrollment
- 343 clinicians in this Medicare group
Washington, MO 63090
- Reassigned Medicare billing, Missouri enrollment
- 178 clinicians in this Medicare group
Perryville, MO 63775
- Reassigned Medicare billing, Missouri enrollment
- 192 clinicians in this Medicare group
Osage Beach, MO 65065
- Reassigned Medicare billing, Missouri enrollment
- 77 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 4
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.
Mercy Hospital South
Acute Care Hospitals · Saint Louis, MOPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 63128 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 63128
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 Joshua Nast's NPI number?
The NPI number for Joshua Nast is 1801231006. It was assigned to this individual provider in the NPPES registry on May 2, 2013.
Where is Joshua Nast located?
Joshua Nast practices at 10010 Kennerly Rd, Saint Louis, MO 63128. The listed phone number is (314) 525-1906.
What is Joshua Nast's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Joshua Nast enrolled in Medicare?
Yes. Joshua Nast 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 Joshua Nast's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Joshua Nast reassigns Medicare benefits to 8 organizations: Cep America, LLC (Saint Louis, MO), Mercy Hospital South (Saint Louis, MO), Mercy Hospitals East Communities (Saint Louis, MO), Mercy Hospital Jefferson (Festus, MO), Southeastern Emergency Physicians Of Memphis LLC (Alton, IL) and 3 more organizations, listed in the Medicare section above. 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 Joshua Nast's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Joshua Nast affiliated with any hospitals?
According to CMS data, Joshua Nast is affiliated with Mercy Hospital South.
When was this NPI record last updated?
The NPPES record for Joshua Nast was last updated on May 13, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.
# Dr. Joshua Robert Nast, DO · NPI 1801231006
Emergency Medicine physician in Saint Louis, Missouri. Individual provider, active in the CMS NPPES registry since May 2, 2013.
## Identity
- **NPI:** 1801231006 (Entity type: Individual)
- **Enumerated:** May 2, 2013
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** 2016028969 (Missouri)
- **Sole proprietor:** No
## Practice location
- **Address:** 10010 KENNERLY RD, Saint Louis, MO 63128-2106
- **Phone:** (314) 525-1906
## 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:** 8 organizations under Medicare reassignment (form CMS-855R): Cep America, LLC (NPI 1619332046, Saint Louis, MO); Mercy Hospital South (NPI 1568481984, Saint Louis, MO); Mercy Hospitals East Communities (NPI 1427098169, Saint Louis, MO); Mercy Hospital Jefferson (NPI 1508859661, Festus, MO); Southeastern Emergency Physicians Of Memphis LLC (NPI 1437105277, Alton, IL); and 3 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Kansas City University Of Med & Biosciences, College Of Osteo Med, class of 2012
## Record status
- **NPPES last updated:** May 13, 2024
---
Source: [NPI Profile](https://npiprofile.com/npi/1801231006) · Data from the CMS NPPES public registry.