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CARISSA SIETSEMA
NPI 1689229759
Social Worker - Clinical in Williamson, WV

Active since August 06, 2019PECOS Enrolled
118 JOSEPH AVE, WILLIAMSON, WV 25661(304) 859-8157 Get Directions Write a Review

NPPES record last updated: January 4, 2024. Verified against the NPPES registry weekly; last sync: November 08, 2026.

Record update history: Jan 4, 2024, Feb 15, 2023, Aug 6, 2019 (3 updates tracked since 2019).

About Carissa Sietsema NPPES

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

CARISSA SIETSEMA (NPI 1689229759) is an individual clinical provider in Williamson, West Virginia and active in the NPI registry since August 2019. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1689229759
Entity TypeIndividualFemale
Primary Taxonomy1041C0700X
Provider Legal NameCARISSA SIETSEMA
Location Address118 JOSEPH AVEWilliamson, WV 25661-3306
Mailing AddressPo Box 2274Williamson, WV 25661-2274
Phone(304) 859-8157
Sole ProprietorYes
Enumeration DateAugust 6, 2019
Last NPPES UpdateJanuary 4, 20243 updates tracked since enumeration
NPPES CertifiedJanuary 4, 2024
✔ NPI 1689229759 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtySocial Worker · ClinicalBehavioral Health & Social Service Providers
Taxonomy Code1041C0700X
Definition
A social worker who holds a master's or doctoral degree in social work from an accredited school of social work in addition to at least two years of post-master's supervised experience in a clinical setting. The social worker must be licensed, certified, or registered at the clinical level in the jurisdiction of practice. A clinical social worker provides direct services, including interventions focused on interpersonal interactions, intrapsychic dynamics, and life management issues. Clinical social work services are based on bio-psychosocial perspectives. Services consist of assessment, diagnosis, treatment (including psychotherapy and counseling), client-centered advocacy, consultation, evaluation, and prevention of mental illness, emotional, or behavioral disturbances.
Also ListedSocial WorkerTaxonomy 104100000X · License SW071915161 (WV)
118 JOSEPH AVE, Williamson, WV 25661
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Highmark Blue Cross Blue Shield West Virginia, Peak Health Insurance.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Carissa Sietsema is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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 Reassignments

2

Medicare enrollment records show Carissa Sietsema reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Ever Blooming Therapy Services LLC
Same address
Clinical
118 JOSEPH AVE
Williamson, WV 25661
  • Reassigned Medicare billing, West Virginia enrollment
NPI 1225735749 (304) 785-9815
Grow Healthcare Group PA
829 mi
Mental Health
66 W FLAGLER ST STE 900
Miami, FL 33130
  • Reassigned Medicare billing, District of Columbia and Kentucky enrollments
  • 1,424 clinicians in this Medicare group
NPI 1245845932 (786) 244-7711

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 25661 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
$0.00 typical visit price
range $53.20 – $164.59
Typical copayment $0.00 (range $13.30 – $41.14)
Most-billed visit code NA
Established Patient
$66.84 typical visit price
range $16.47 – $133.29
Typical copayment $16.71 (range $4.11 – $33.32)
Most-billed visit code 99213
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 2

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

EVER BLOOMING THERAPY SERVICES LLC
Social Worker (Clinical)
118 JOSEPH AVE
WILLIAMSON, WV 25661
Mingo County (304) 785-9815
DANA KAY STROM
Social Worker (Clinical)
118 JOSEPH AVE
WILLIAMSON, WV 25661
Mingo County (304) 443-3544

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 Carissa Sietsema's NPI number?

The NPI number for Carissa Sietsema is 1689229759. It was assigned to this individual provider in the NPPES registry on August 6, 2019.

Where is Carissa Sietsema located?

Carissa Sietsema practices at 118 Joseph Ave, Williamson, WV 25661. The listed phone number is (304) 859-8157.

What is Carissa Sietsema's specialty?

The primary specialty registered for this NPI is Social Worker, specializing in Clinical, with taxonomy code 1041C0700X.

Is Carissa Sietsema enrolled in Medicare?

Yes. Carissa Sietsema is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Carissa Sietsema's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Carissa Sietsema reassigns Medicare benefits to 2 organizations: Ever Blooming Therapy Services LLC (Williamson, WV) and Grow Healthcare Group PA (Miami, FL). 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 Carissa Sietsema's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Carissa Sietsema accept?

Health plans from Highmark Blue Cross Blue Shield West Virginia and Peak Health Insurance list Carissa Sietsema 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 Carissa Sietsema was last updated on January 4, 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.