HEATHER L KEITH APNP
NPI 1699156372
Nurse Practitioner in Saint Charles, MO
About Heather L Keith Apnp NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
HEATHER L KEITH APNP (NPI 1699156372) is an individual nurse practitioner in Saint Charles, Missouri, licensed in Missouri (2015006323) and active in the NPI registry since June 2015. She is enrolled in Medicare PECOS, is affiliated with The Monroe Clinic, and maintains 3 additional practice locations.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Locations 3
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
Heather L Keith Apnp 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
5Medicare enrollment records show Heather Keith reassigns Medicare billing to 5 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
Mount Vernon, IL 62864
- Reassigned Medicare billing, Illinois enrollment
- 296 clinicians in this Medicare group
Madison, WI 53715
- Reassigned Medicare billing, Wisconsin enrollment
- 1,377 clinicians in this Medicare group
Beaver Dam, WI 53916
- Reassigned Medicare billing, Wisconsin enrollment
- 606 clinicians in this Medicare group
Oklahoma City, OK 73116
- Reassigned Medicare billing, Oklahoma enrollment
- 507 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
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.
The Monroe Clinic
Acute Care Hospitals · Monroe, WIPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 63303 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 3
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 Heather Keith's NPI number?
The NPI number for Heather Keith is 1699156372. It was assigned to this individual provider in the NPPES registry on June 17, 2015.
Where is Heather Keith located?
Heather Keith practices at 2310 S Old Highway 94, Saint Charles, MO 63303. The listed phone number is (314) 687-2729.
What is Heather Keith's specialty?
The primary specialty registered for this NPI is Nurse Practitioner with taxonomy code 363L00000X.
Is Heather Keith enrolled in Medicare?
Yes. Heather Keith 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 Heather Keith's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Heather Keith reassigns Medicare benefits to 5 organizations: Ssm Medical Group, Inc. (O Fallon, MO), Physician Services Corporation Of Southern Illinois Inc. (Mount Vernon, IL), Dean Health Systems, Inc (Madison, WI), Agnesian Healthcare (Beaver Dam, WI) and Saints Medical Group, LLC (Oklahoma City, OK). 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 Heather Keith's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Heather Keith 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 5 other insurers list Heather Keith 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 Heather Keith affiliated with any hospitals?
According to CMS data, Heather Keith is affiliated with The Monroe Clinic.
When was this NPI record last updated?
The NPPES record for Heather Keith was last updated on March 20, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.
# Heather L Keith, APNP · NPI 1699156372
Nurse Practitioner physician in Saint Charles, Missouri. Individual provider, active in the CMS NPPES registry since June 17, 2015.
## Identity
- **NPI:** 1699156372 (Entity type: Individual)
- **Enumerated:** June 17, 2015
- **Primary specialty:** Nurse Practitioner · taxonomy 363L00000X
- **State license:** 2015006323 (Missouri)
- **Sole proprietor:** No
## Practice location
- **Address:** 2310 S OLD HIGHWAY 94, Saint Charles, MO 63303-5622
- **Phone:** (314) 687-2729
## 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:** 5 organizations under Medicare reassignment (form CMS-855R): Ssm Medical Group, Inc. (NPI 1851896146, O Fallon, MO); Physician Services Corporation Of Southern Illinois Inc. (NPI 1831101807, Mount Vernon, IL); Dean Health Systems, Inc (NPI 1053358846, Madison, WI); Agnesian Healthcare (NPI 1700817657, Beaver Dam, WI); Saints Medical Group, LLC (NPI 1437195922, Oklahoma City, OK) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2014
## Record status
- **NPPES last updated:** March 20, 2023
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Source: [NPI Profile](https://npiprofile.com/npi/1699156372) · Data from the CMS NPPES public registry.