MRS. DAWN MARIE JOHNS
NPI 1073903241
Nurse Practitioner in O Fallon, MO
About Mrs. Dawn Marie Johns NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MRS. DAWN MARIE JOHNS (NPI 1073903241) is an individual nurse practitioner in O Fallon, Missouri, licensed in Missouri (2015001943) and active in the NPI registry since January 2015. She is enrolled in Medicare PECOS, is affiliated with Ssm St Joseph Health Center, and maintains a secondary practice location in O Fallon.
NPPES Registry Identity
Specialties & Licenses 2
Other Names 1
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
Mrs. Dawn Marie Johns 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 Dawn Johns reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
O Fallon, MO 63366
- Reassigned Medicare billing, Missouri enrollment
- 697 clinicians in this Medicare group
Lake St Louis, MO 63367
- Reassigned Medicare billing, Missouri enrollment
- 741 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 3
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 3
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Ssm St Joseph Health Center
Acute Care Hospitals · Saint Charles, MOMercy Hospital St Louis
Acute Care Hospitals · Saint Louis, MOSsm St Joseph Hospital West
Acute Care Hospitals · Lake Saint Louis, MOPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 63366 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Referred Medical Equipment & Supplies CMS DME claims
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
Other Providers at the Same Location NPPES 11
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 Dawn Johns's NPI number?
The NPI number for Dawn Johns is 1073903241. It was assigned to this individual provider in the NPPES registry on January 27, 2015. The provider is also known as Dawn Marie Johns Rn,bsn,np-C.
Where is Dawn Johns located?
Dawn Johns practices at 920 N Main St, O Fallon, MO 63366. The listed phone number is (314) 687-2731.
What is Dawn Johns's specialty?
The primary specialty registered for this NPI is Nurse Practitioner with taxonomy code 363L00000X.
Is Dawn Johns enrolled in Medicare?
Yes. Dawn Johns 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 Dawn Johns's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Dawn Johns reassigns Medicare benefits to 2 organizations: Ssm Medical Group, Inc. (O Fallon, MO) and Ssm Health Care St. Louis (Lake St Louis, 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 Dawn Johns's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Dawn Johns accept?
Health plans from Ambetter Health, Ambetter Health of Delaware, Ambetter from Arkansas Health & Wellness, Ambetter from Sunflower Health Plan and Ambetter of Oklahoma and 4 other insurers list Dawn Johns 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 Dawn Johns affiliated with any hospitals?
According to CMS data, Dawn Johns is affiliated with Ssm St Joseph Health Center, Mercy Hospital St Louis and Ssm St Joseph Hospital West.
When was this NPI record last updated?
The NPPES record for Dawn Johns was last updated on October 23, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.
# Mrs. Dawn Marie Johns · NPI 1073903241
Nurse Practitioner physician in O Fallon, Missouri. Individual provider, active in the CMS NPPES registry since January 27, 2015.
## Identity
- **NPI:** 1073903241 (Entity type: Individual)
- **Enumerated:** January 27, 2015
- **Primary specialty:** Nurse Practitioner · taxonomy 363L00000X
- **State license:** 2015001943 (Missouri)
- **Sole proprietor:** No
## Practice location
- **Address:** 920 N MAIN ST, O Fallon, MO 63366-1746
- **Phone:** (314) 687-2731
## 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): Ssm Medical Group, Inc. (NPI 1851896146, O Fallon, MO); Ssm Health Care St. Louis (NPI 1538113097, Lake St Louis, MO) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2014
## Record status
- **NPPES last updated:** October 23, 2020
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Source: [NPI Profile](https://npiprofile.com/npi/1073903241) · Data from the CMS NPPES public registry.