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MRS. CALLISTA NGOZI IWUALA APN-C
NPI 1841566486
Nurse Practitioner - Psychiatric/Mental Health in Irvington, NJ

Active since March 28, 2012PECOS EnrolledAccepts Medicare Assignment
860 GROVE ST, IRVINGTON, NJ 07111(973) 373-0805(973) 243-9861 Get Directions Write a Review

NPPES record last updated: July 16, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Mrs. Callista Ngozi Iwuala Apn-c NPPES

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

MRS. CALLISTA NGOZI IWUALA APN-C (NPI 1841566486) is an individual psychiatric/mental health provider in Irvington, New Jersey, licensed in New Jersey (26NJ00351900) and active in the NPI registry since March 2012. She is enrolled in Medicare PECOS and is a graduate of Other (2017).

NPPES Registry Identity

NPI1841566486
Entity TypeIndividualFemale
Primary Taxonomy363LP0808X
Provider Legal NameMRS. CALLISTA NGOZI IWUALACredential: APN-C
Location Address860 GROVE STIrvington, NJ 07111-3601
Mailing Address46 Crystal AveWest Orange, NJ 07052-3546 · (201) 362-9916 · Fax (973) 243-9861
Phone(973) 373-0805
Fax(973) 243-9861
Sole ProprietorYes
Medical School CMSOtherGraduated 2017
Enumeration DateMarch 28, 2012
Last NPPES UpdateJuly 16, 2025
NPPES CertifiedJuly 16, 2025
✔ NPI 1841566486 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyNurse Practitioner · Psychiatric/Mental HealthPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LP0808X
License✔ Licensed in NJ · 26NJ00351900
Also ListedNurse Practitioner · FamilyTaxonomy 363LF0000X · License 26NJ00351900 (NJ)
860 GROVE ST, Irvington, NJ 07111
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter Health, Ambetter Health of Delaware, Oscar Health.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

Mrs. Callista Ngozi Iwuala Apn-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.

PECOS PAC ID7012173479
PECOS Enrollment IDI20251223000147
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 Callista Iwuala reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Therapy Confidential And Consulting LLC
7.5 mi
Psychiatric/Mental Health
1199 ROUTE 22
Mountainside, NJ 07092
  • Reassigned Medicare billing, New Jersey enrollment
  • 2 clinicians in this Medicare group
NPI 1265150056 (908) 228-5100

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 07111 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
$98.09 typical visit price
range $63.84 – $190.92
Typical copayment $24.52 (range $15.96 – $47.73)
Most-billed visit code 99203
Established Patient
$111.57 typical visit price
range $20.97 – $155.92
Typical copayment $27.89 (range $5.24 – $38.98)
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 6

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

NEIGHBORHOOD FAMILY CLINIC AND COUNSELING CENTER LLC
Nurse Practitioner (Psychiatric/Mental Health)
860 GROVE ST
IRVINGTON, NJ 07111
Essex County (201) 362-9916
JUST ONE BIG HAPPY FAMILY LLC
Clinic/Center (Rehabilitation, Substance Use Disorder)
860 GROVE ST
IRVINGTON, NJ 07111
Essex County (484) 544-2690
DR. PALANISAMY S SUNDARAM I M.D
Pediatrics
860 GROVE ST
IRVINGTON, NJ 07111
Essex County (973) 399-8650
DR. MORRIS SILVER DDS
Dentist
860 GROVE ST
IRVINGTON, NJ 07111
Essex County (973) 373-0499
MRS. RUTH SILVER LCSW RN
Social Worker (Clinical)
860 GROVE ST
IRVINGTON, NJ 07111
Essex County (973) 373-0499
MR. LESTER SUGGS B.A. PSYCHOLOGY
Counselor
860 GROVE ST
IRVINGTON, NJ 07111
Essex County (973) 373-0810

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 Callista Iwuala's NPI number?

The NPI number for Callista Iwuala is 1841566486. It was assigned to this individual provider in the NPPES registry on March 28, 2012.

Where is Callista Iwuala located?

Callista Iwuala practices at 860 Grove St, Irvington, NJ 07111. The listed phone number is (973) 373-0805.

What is Callista Iwuala's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Psychiatric/Mental Health, with taxonomy code 363LP0808X.

Is Callista Iwuala enrolled in Medicare?

Yes. Callista Iwuala 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 Callista Iwuala's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Callista Iwuala reassigns Medicare benefits to Therapy Confidential And Consulting LLC (Mountainside, NJ). 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 Callista Iwuala's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Callista Iwuala accept?

Health plans from Ambetter Health, Ambetter Health of Delaware and Oscar Health list Callista Iwuala 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 Callista Iwuala was last updated on July 16, 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.