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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

MARY CASEY CHRISTOPHERSEN NP
NPI 1669061289
Nurse Practitioner in Fort Wayne, IN

Active since January 18, 2021PECOS Enrolled
6507 E STATE BLVD, FORT WAYNE, IN 46815(260) 486-3300(260) 486-3600 Get Directions Write a Review

NPPES record last updated: September 3, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Sep 3, 2026, Jan 18, 2021 (2 updates tracked since 2021).

About Mary Casey Christophersen Np NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MARY CASEY CHRISTOPHERSEN NP (NPI 1669061289) is an individual nurse practitioner in Fort Wayne, Indiana, licensed in Indiana (71011222A) and active in the NPI registry since January 2021. She is enrolled in Medicare PECOS and is a graduate of Other (2013).

NPPES Registry Identity

NPI1669061289
Entity TypeIndividualFemale
Primary Taxonomy363L00000X
Provider Legal NameMARY CASEY CHRISTOPHERSENCredential: NP
Location Address6507 E STATE BLVDFort Wayne, IN 46815-7026
Mailing Address11109 Parkview Plaza Dr # 117Fort Wayne, IN 46845-1701
Phone(260) 486-3300
Fax(260) 486-3600
Sole ProprietorNo
Medical School CMSOtherGraduated 2013
Enumeration DateJanuary 18, 2021
Last NPPES UpdateSeptember 3, 20262 updates tracked since enumeration
NPPES CertifiedSeptember 3, 2026
✔ NPI 1669061289 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyNurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363L00000X
License✔ Licensed in IN · 71011222A
Definition
(1) A registered nurse provider with a graduate degree in nursing prepared for advanced practice involving independent and interdependent decision making and direct accountability for clinical judgment across the health care continuum or in a certified specialty. (2) A registered nurse who has completed additional training beyond basic nursing education and who provides primary health care services in accordance with state nurse practice laws or statutes. Tasks performed by nurse practitioners vary with practice requirements mandated by geographic, political, economic, and social factors. Nurse practitioner specialists include, but are not limited to, family nurse practitioners, gerontological nurse practitioners, pediatric nurse practitioners, obstetric-gynecologic nurse practitioners, and school nurse practitioners.
Also ListedRegistered NurseTaxonomy 163W00000X · License 28234514A (IN)
6507 E STATE BLVD, Fort Wayne, IN 46815
Open in Google Maps ↗

Other Names 1

Former Name (1)Mary Casey Niezer

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Buckeye Health Plan, Ambetter from Meridian, Ambetter Health and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Mary Casey Christophersen Np is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID446718381
PECOS Enrollment IDI20260820001795
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Mary Christophersen reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Parkview Health System, Inc.
6.1 mi
Rheumatology
3816 NEW VISION DR
Fort Wayne, IN 46845
  • Reassigned Medicare billing, Indiana enrollment
  • 1,752 clinicians in this Medicare group
NPI 1912233867 (260) 266-8210

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 46815 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$82.04 typical visit price
range $53.07 – $161.76
Typical copayment $20.51 (range $13.26 – $40.44)
Most-billed visit code 99203
Established Patient
$94.22 typical visit price
range $16.93 – $132.22
Typical copayment $23.55 (range $4.23 – $33.05)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 7

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

COURTNEY MARIE JACKSON MD
Family Medicine
6507 E STATE BLVD
FORT WAYNE, IN 46815
Allen County (260) 486-3300
JULIE BRYAN M.D.
Internal Medicine
6507 E STATE BLVD
FORT WAYNE, IN 46815
Allen County (260) 486-3300
CHRISTY A BUUCK PA
Physician Assistant
6507 E STATE BLVD
FORT WAYNE, IN 46815
Allen County (260) 486-3300
SHELLI A. JENKINS NP-C
Nurse Practitioner
6507 E STATE BLVD
FORT WAYNE, IN 46815
Allen County (260) 486-3300
SARA L BAUER NP
Nurse Practitioner
6507 E STATE BLVD
FORT WAYNE, IN 46815
Allen County (260) 486-3300
DR. MARK D O'BRIEN D.O.
Pediatrics
6507 E STATE BLVD
FORT WAYNE, IN 46815
Allen County (260) 486-3300
ASHRAF H HANNA MD
Family Medicine
6507 E STATE BLVD
FORT WAYNE, IN 46815
Allen County (260) 486-3300

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 Mary Christophersen's NPI number?

The NPI number for Mary Christophersen is 1669061289. It was assigned to this individual provider in the NPPES registry on January 18, 2021. The provider is also known as Mary Casey Niezer.

Where is Mary Christophersen located?

Mary Christophersen practices at 6507 E State Blvd, Fort Wayne, IN 46815. The listed phone number is (260) 486-3300.

What is Mary Christophersen's specialty?

The primary specialty registered for this NPI is Nurse Practitioner with taxonomy code 363L00000X.

Is Mary Christophersen enrolled in Medicare?

Yes. Mary Christophersen is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Mary Christophersen's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Mary Christophersen reassigns Medicare benefits to Parkview Health System, Inc. (Fort Wayne, IN). 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 Mary Christophersen's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Mary Christophersen accept?

Health plans from Ambetter Health, Ambetter from Buckeye Health Plan, Ambetter from Meridian, Anthem Blue Cross and Blue Shield and CareSource list Mary Christophersen 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 Mary Christophersen was last updated on September 3, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 54 days 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.