MS. CHRISTIE MARIE KEEN FNP
NPI 1023577442
Nurse Practitioner in Saint Louis, MO
About Ms. Christie Marie Keen Fnp NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MS. CHRISTIE MARIE KEEN FNP (NPI 1023577442) is an individual nurse practitioner in Saint Louis, Missouri, licensed in Missouri (2019002366) and active in the NPI registry since March 2019. She is enrolled in Medicare PECOS, is affiliated with Osf Saint Anthony's Health Center, and is a graduate of Other (2018).
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
Ms. Christie Marie Keen Fnp 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
12Medicare enrollment records show Christie Keen reassigns Medicare billing to 12 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Saint Louis, MO 63136
- Reassigned Medicare billing, Missouri enrollment
- 114 clinicians in this Medicare group
Saint Louis, MO 63106
- Reassigned Medicare billing, Missouri enrollment
- 269 clinicians in this Medicare group
Alton, IL 62002
- Reassigned Medicare billing, Illinois and Missouri enrollments
- 65 clinicians in this Medicare group
Alton, IL 62002
- Reassigned Medicare billing, Illinois enrollment
- 42 clinicians in this Medicare group
Saint Louis, MO 63119
- Reassigned Medicare billing, Missouri enrollment
- 111 clinicians in this Medicare group
Collinsville, IL 62234
- Reassigned Medicare billing, Illinois enrollment
- 28 clinicians in this Medicare group
Belleville, IL 62226
- Reassigned Medicare billing, Illinois enrollment
- 111 clinicians in this Medicare group
Belleville, IL 62226
- Reassigned Medicare billing, Illinois enrollment
- 982 clinicians in this Medicare group
Chesterfield, MO 63017
- Reassigned Medicare billing, Missouri enrollment
- 169 clinicians in this Medicare group
O Fallon, IL 62269
- Reassigned Medicare billing, Illinois enrollment
- 119 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 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Osf Saint Anthony's Health Center
Acute Care Hospitals · Alton, ILHshs St Elizabeth's Hospital
Acute Care Hospitals · O Fallon, ILPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 63136 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 63136
SAINT LOUIS, MO 63136
SAINT LOUIS, MO 63136
SAINT LOUIS, MO 63136
SAINT LOUIS, MO 63136
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 Christie Keen's NPI number?
The NPI number for Christie Keen is 1023577442. It was assigned to this individual provider in the NPPES registry on March 15, 2019.
Where is Christie Keen located?
Christie Keen practices at 11133 Dunn Rd Dept Emergency Med, Saint Louis, MO 63136. The listed phone number is (314) 362-9123.
What is Christie Keen's specialty?
The primary specialty registered for this NPI is Nurse Practitioner with taxonomy code 363L00000X.
Is Christie Keen enrolled in Medicare?
Yes. Christie Keen 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 Christie Keen's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Christie Keen reassigns Medicare benefits to 12 organizations: Washington University Community Specialists, LLC (Saint Louis, MO), Cep America LLC (Saint Louis, MO), Southeastern Emergency Physicians Of Memphis LLC (Alton, IL), Alton-Griffin Emergency Group PC (Alton, IL), Total Access Urgent Care, PC (Saint Louis, MO) and 7 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 Christie Keen's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Christie Keen accept?
Health plans from Anthem Blue Cross and Blue Shield list Christie Keen 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 Christie Keen affiliated with any hospitals?
According to CMS data, Christie Keen is affiliated with Osf Saint Anthony's Health Center and Hshs St Elizabeth's Hospital.
When was this NPI record last updated?
The NPPES record for Christie Keen was last updated on July 14, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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.
# Ms. Christie Marie Keen, FNP · NPI 1023577442
Nurse Practitioner physician in Saint Louis, Missouri. Individual provider, active in the CMS NPPES registry since March 15, 2019.
## Identity
- **NPI:** 1023577442 (Entity type: Individual)
- **Enumerated:** March 15, 2019
- **Primary specialty:** Nurse Practitioner · taxonomy 363L00000X
- **State license:** 2019002366 (Missouri)
- **Sole proprietor:** No
## Practice location
- **Address:** 11133 DUNN RD, DEPT EMERGENCY MED, Saint Louis, MO 63136-6163
- **Phone:** (314) 362-9123 · **Fax:** (314) 747-9160
## 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:** 12 organizations under Medicare reassignment (form CMS-855R): Washington University Community Specialists, LLC (NPI 1922812254, Saint Louis, MO); Cep America LLC (NPI 1699461673, Saint Louis, MO); Southeastern Emergency Physicians Of Memphis LLC (NPI 1437105277, Alton, IL); Alton-Griffin Emergency Group PC (NPI 1891104824, Alton, IL); Total Access Urgent Care, PC (NPI 1962684886, Saint Louis, MO); and 7 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2018
## Record status
- **NPPES last updated:** July 14, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1023577442) · Data from the CMS NPPES public registry.