CASEY FOSTER DE GRAAF NP-C
NPI 1174027098
Nurse Practitioner - Family in Oklahoma City, OK
About Casey Foster De Graaf Np-c NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
CASEY FOSTER DE GRAAF NP-C (NPI 1174027098) is an individual family provider in Oklahoma City, Oklahoma, licensed in Oklahoma (212947) and active in the NPI registry since March 2018. She is enrolled in Medicare PECOS, is affiliated with Mercy Hospital Oklahoma City, Inc, and is a graduate of Other (2017).
NPPES Registry Identity
Specialties & Licenses
Other Names 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
Casey Foster De Graaf Np-c 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 Casey De Graaf reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Oklahoma City, OK 73120
- Reassigned Medicare billing, Oklahoma enrollment
- 975 clinicians in this Medicare group
Charleston, SC 29414
- Reassigned Medicare billing, South Carolina enrollment
- Medicare enrollment name: University Medical Associates Of The Medical University Of South Carol
- 2,594 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
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Mercy Hospital Oklahoma City, Inc
Acute Care Hospitals · Oklahoma City, OKPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 73135 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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 Casey De Graaf's NPI number?
The NPI number for Casey De Graaf is 1174027098. It was assigned to this individual provider in the NPPES registry on March 23, 2018. The provider is also known as Casey Jane Foster Np-C.
Where is Casey De Graaf located?
Casey De Graaf practices at 5200 E I 240 Service Rd # 330, Oklahoma City, OK 73135. The listed phone number is (405) 416-9703.
What is Casey De Graaf's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.
Is Casey De Graaf enrolled in Medicare?
Yes. Casey De Graaf 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 Casey De Graaf's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Casey De Graaf reassigns Medicare benefits to 2 organizations: Mercy Clinic Oklahoma Communities (Oklahoma City, OK) and University Medical Associates (Charleston, SC). 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 Casey De Graaf's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Casey De Graaf accept?
Health plans from Ambetter Health, Ambetter from Arkansas Health & Wellness, Ambetter from Sunflower Health Plan, Ambetter from Superior HealthPlan and Ambetter of Oklahoma and 4 other insurers list Casey De Graaf 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 Casey De Graaf affiliated with any hospitals?
According to CMS data, Casey De Graaf is affiliated with Mercy Hospital Oklahoma City, Inc.
When was this NPI record last updated?
The NPPES record for Casey De Graaf was last updated on March 24, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.
# Casey Foster De Graaf, NP-C · NPI 1174027098
Family physician in Oklahoma City, Oklahoma. Individual provider, active in the CMS NPPES registry since March 23, 2018.
## Identity
- **NPI:** 1174027098 (Entity type: Individual)
- **Enumerated:** March 23, 2018
- **Primary specialty:** Nurse Practitioner - Family · taxonomy 363LF0000X
- **State license:** 212947 (Oklahoma)
- **Sole proprietor:** No
## Practice location
- **Address:** 5200 E I 240 SERVICE RD # 330, Oklahoma City, OK 73135-2607
- **Phone:** (405) 416-9703 · **Fax:** (405) 416-9704
## 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): Mercy Clinic Oklahoma Communities (NPI 1386874550, Oklahoma City, OK); University Medical Associates (NPI 1760413835, Charleston, SC) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2017
## Record status
- **NPPES last updated:** March 24, 2025
---
Source: [NPI Profile](https://npiprofile.com/npi/1174027098) · Data from the CMS NPPES public registry.