CHRISTIANA E WILLIAMS APRN-CNP
NPI 1821155490
Nurse Practitioner in Oklahoma City, OK
About Christiana E Williams Aprn-cnp NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
CHRISTIANA E WILLIAMS APRN-CNP (NPI 1821155490) is an individual nurse practitioner in Oklahoma City, Oklahoma, licensed in Oklahoma (ROO58523) and active in the NPI registry since January 2007. She is enrolled in Medicare PECOS and is a graduate of Other (2000).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 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
Christiana E Williams Aprn-cnp 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 Reassignment
Medicare enrollment records show Christiana Williams reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Oklahoma City, OK 73109
- Reassigned Medicare billing, Oklahoma enrollment
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 73109 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
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
OKLAHOMA CITY, OK 73109
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 Christiana Williams's NPI number?
The NPI number for Christiana Williams is 1821155490. It was assigned to this individual provider in the NPPES registry on January 3, 2007.
Where is Christiana Williams located?
Christiana Williams practices at 1024 SW 44th St Suite 800, Oklahoma City, OK 73109. The listed phone number is (405) 702-9050.
What is Christiana Williams's specialty?
The primary specialty registered for this NPI is Nurse Practitioner with taxonomy code 363L00000X.
Is Christiana Williams enrolled in Medicare?
Yes. Christiana Williams 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 organization bills Medicare for Christiana Williams's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Christiana Williams reassigns Medicare benefits to Providence Family Practice, PLLC (Oklahoma City, OK). The 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 Christiana Williams's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Christiana Williams 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 3 other insurers list Christiana Williams 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.
When was this NPI record last updated?
The NPPES record for Christiana Williams was last updated on March 13, 2012. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 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.
# Christiana E Williams, APRN-CNP · NPI 1821155490
Nurse Practitioner physician in Oklahoma City, Oklahoma. Individual provider, active in the CMS NPPES registry since January 3, 2007.
## Identity
- **NPI:** 1821155490 (Entity type: Individual)
- **Enumerated:** January 3, 2007
- **Primary specialty:** Nurse Practitioner · taxonomy 363L00000X
- **State license:** ROO58523 (Oklahoma)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 1024 SW 44TH ST, SUITE 800, Oklahoma City, OK 73109-3614
- **Phone:** (405) 702-9050 · **Fax:** (405) 702-9061
## 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:** Providence Family Practice, PLLC (NPI 1215185491, Oklahoma City, OK), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2000
## Record status
- **NPPES last updated:** March 13, 2012
- **Other identifiers:** Medicaid 200087300A (OK)
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Source: [NPI Profile](https://npiprofile.com/npi/1821155490) · Data from the CMS NPPES public registry.