CHARLOTTE N OLEKSAK
NPI 1225344898
Counselor - Mental Health in Westfield, MA
About Charlotte N Oleksak NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
CHARLOTTE N OLEKSAK (NPI 1225344898) is an individual mental health provider in Westfield, Massachusetts, licensed in Massachusetts (8654) and active in the NPI registry since August 2010. She is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Charlotte N Oleksak is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Charlotte Oleksak reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Holyoke, MA 01040
- Reassigned Medicare billing, Massachusetts enrollment
- 144 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
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.
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 Charlotte Oleksak's NPI number?
The NPI number for Charlotte Oleksak is 1225344898. It was assigned to this individual provider in the NPPES registry on August 20, 2010.
Where is Charlotte Oleksak located?
Charlotte Oleksak practices at 94 N Elm St, Westfield, MA 01085. The listed phone number is (413) 540-1234.
What is Charlotte Oleksak's specialty?
The primary specialty registered for this NPI is Counselor, specializing in Mental Health, with taxonomy code 101YM0800X.
Is Charlotte Oleksak enrolled in Medicare?
Yes. Charlotte Oleksak is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Charlotte Oleksak's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Charlotte Oleksak reassigns Medicare benefits to River Valley Counseling Center, Inc (Holyoke, MA). 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 Charlotte Oleksak's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Charlotte Oleksak was last updated on October 22, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.
# Charlotte N Oleksak · NPI 1225344898
Mental Health provider in Westfield, Massachusetts. Individual provider, active in the CMS NPPES registry since August 20, 2010.
## Identity
- **NPI:** 1225344898 (Entity type: Individual)
- **Enumerated:** August 20, 2010
- **Primary specialty:** Counselor - Mental Health · taxonomy 101YM0800X
- **State license:** 8654 (Massachusetts)
- **Sole proprietor:** No
## Practice location
- **Address:** 94 N ELM ST, Westfield, MA 01085-1647
- **Phone:** (413) 540-1234
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment
- **Bills Medicare through:** River Valley Counseling Center, Inc (NPI 1851444616, Holyoke, MA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** October 22, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1225344898) · Data from the CMS NPPES public registry.