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KARISSA MARIE WEAVER PMHNP
NPI 1285490896
Clinical Nurse Specialist - Psychiatric/Mental Health in Sioux City, IA

Active since February 22, 2024PECOS EnrolledAccepts Medicare Assignment
625 COURT ST, SIOUX CITY, IA 51101(712) 252-3871 Get Directions Write a Review

NPPES record last updated: February 23, 2024. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Karissa Marie Weaver Pmhnp NPPES

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

KARISSA MARIE WEAVER PMHNP (NPI 1285490896) is an individual psychiatric/mental health provider in Sioux City, Iowa, licensed in Iowa (G178290) and active in the NPI registry since February 2024. She is enrolled in Medicare PECOS and is a graduate of Other (2023).

NPPES Registry Identity

NPI1285490896
Entity TypeIndividualFemale
Primary Taxonomy364SP0808X
Provider Legal NameKARISSA MARIE WEAVERCredential: PMHNP
Location Address625 COURT STSioux City, IA 51101-1919
Mailing AddressPo Box 305Correctionville, IA 51016-0305 · (712) 899-7207
Phone(712) 252-3871
Sole ProprietorYes
Medical School CMSOtherGraduated 2023
Enumeration DateFebruary 22, 2024
Last NPPES UpdateFebruary 23, 2024
NPPES CertifiedFebruary 23, 2024
✔ NPI 1285490896 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyClinical Nurse Specialist · Psychiatric/Mental HealthPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code364SP0808X
License✔ Licensed in IA · G178290
625 COURT ST, Sioux City, IA 51101
Open in Google Maps ↗

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from NH Healthy Families, Ambetter from Sunflower Health Plan, 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 and accepts Medicare assignment

Karissa Marie Weaver Pmhnp 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 ID2466893490
PECOS Enrollment IDI20240508002592
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 Karissa Weaver reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Siouxland Mental Health Services, Inc.
Same address
Community/Behavioral Health
625 COURT ST
Sioux City, IA 51101
  • Reassigned Medicare billing, Iowa enrollment
  • 34 clinicians in this Medicare group
NPI 1952529950 (712) 252-3871

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 51101 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
$122.23 typical visit price
range $52.96 – $161.40
Typical copayment $30.55 (range $13.24 – $40.35)
Most-billed visit code 99204
Established Patient
$94.05 typical visit price
range $16.91 – $131.98
Typical copayment $23.51 (range $4.22 – $32.99)
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 20

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

JUANA MEDINA PALMER LISW
Social Worker (Clinical)
625 COURT ST
SIOUX CITY, IA 51101
Woodbury County (712) 252-3871
ANNA MURPHY
Counselor (Mental Health)
625 COURT ST
SIOUX CITY, IA 51101
Woodbury County (712) 252-3871
CARLY ALYSSA TURNER MSW
Social Worker (Clinical)
625 COURT ST
SIOUX CITY, IA 51101
Woodbury County (712) 252-3871
MR. RICARDO OSORIO NP
Clinical Nurse Specialist (Psychiatric/Mental Health)
625 COURT ST
SIOUX CITY, IA 51101
Woodbury County (712) 252-3871
LAUREL WALSH MSW
Social Worker
625 COURT ST
SIOUX CITY, IA 51101
Woodbury County (712) 252-3871
BREANNE ALLEN DANZI
Psychologist
625 COURT ST
SIOUX CITY, IA 51101
Woodbury County (712) 252-3871
AMY SMALL LISW
Social Worker (Clinical)
625 COURT ST
SIOUX CITY, IA 51101
Woodbury County (712) 252-3871
DANELLE FULTON R.N.
Registered Nurse
625 COURT ST
SIOUX CITY, IA 51101
Woodbury County (712) 252-3871

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 Karissa Weaver's NPI number?

The NPI number for Karissa Weaver is 1285490896. It was assigned to this individual provider in the NPPES registry on February 22, 2024.

Where is Karissa Weaver located?

Karissa Weaver practices at 625 Court St, Sioux City, IA 51101. The listed phone number is (712) 252-3871.

What is Karissa Weaver's specialty?

The primary specialty registered for this NPI is Clinical Nurse Specialist, specializing in Psychiatric/Mental Health, with taxonomy code 364SP0808X.

Is Karissa Weaver enrolled in Medicare?

Yes. Karissa Weaver 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 Karissa Weaver's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Karissa Weaver reassigns Medicare benefits to Siouxland Mental Health Services, Inc. (Sioux City, IA). 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 Karissa Weaver's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Karissa Weaver accept?

Health plans from Ambetter Health, Ambetter Health of Delaware, Ambetter from NH Healthy Families, Ambetter from Sunflower Health Plan and Oscar Insurance Company and 1 other insurer list Karissa Weaver 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 Karissa Weaver was last updated on February 23, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.