EUNICE PEREIRA KOWALCZYK DNP, PMHNP
NPI 1457995417
Nurse Practitioner - Psychiatric/Mental Health in Westborough, MA
About Eunice Pereira Kowalczyk Dnp, Pmhnp NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
EUNICE PEREIRA KOWALCZYK DNP, PMHNP (NPI 1457995417) is an individual psychiatric/mental health provider in Westborough, Massachusetts, licensed in Massachusetts (RN2277843) and active in the NPI registry since November 2019. She is enrolled in Medicare PECOS and is a graduate of Other (2019).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 1
Accepted 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
Eunice Pereira Kowalczyk Dnp, 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.
Medicare Billing Reassignments
2Medicare enrollment records show Eunice Kowalczyk reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Northborough, MA 01532
- Reassigned Medicare billing, Massachusetts enrollment
Worcester, MA 01606
- Reassigned Medicare billing, Massachusetts enrollment
- 718 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.
Areas of Expertise CMS Part B claims
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 01581 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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.
WESTBOROUGH, MA 01581
WESTBOROUGH, MA 01581
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 Eunice Kowalczyk's NPI number?
The NPI number for Eunice Kowalczyk is 1457995417. It was assigned to this individual provider in the NPPES registry on November 3, 2019.
Where is Eunice Kowalczyk located?
Eunice Kowalczyk practices at 900 Union St, Westborough, MA 01581. The listed phone number is (508) 856-0732.
What is Eunice Kowalczyk's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Psychiatric/Mental Health, with taxonomy code 363LP0808X.
Is Eunice Kowalczyk enrolled in Medicare?
Yes. Eunice Kowalczyk 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 organizations bill Medicare for Eunice Kowalczyk's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Eunice Kowalczyk reassigns Medicare benefits to 2 organizations: Moosey And Adams Behavioral Health PLLC (Northborough, MA) and Reliant Medical Group, Inc (Worcester, MA). 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 Eunice Kowalczyk's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Eunice Kowalczyk accept?
Health plans from Anthem Blue Cross and Blue Shield and Harvard Pilgrim Health Care list Eunice Kowalczyk 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 Eunice Kowalczyk was last updated on May 5, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 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.
# Eunice Pereira Kowalczyk, DNP, PMHNP · NPI 1457995417
Psychiatric/Mental Health physician in Westborough, Massachusetts. Individual provider, active in the CMS NPPES registry since November 3, 2019.
## Identity
- **NPI:** 1457995417 (Entity type: Individual)
- **Enumerated:** November 3, 2019
- **Primary specialty:** Nurse Practitioner - Psychiatric/Mental Health · taxonomy 363LP0808X
- **State license:** RN2277843 (Massachusetts)
- **Sole proprietor:** No
## Practice location
- **Address:** 900 UNION ST, Westborough, MA 01581-5408
- **Phone:** (508) 856-0732 · **Fax:** (508) 425-5126
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Moosey And Adams Behavioral Health PLLC (NPI 1811863624, Northborough, MA); Reliant Medical Group, Inc (NPI 1720017528, Worcester, MA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2019
## Record status
- **NPPES last updated:** May 5, 2025
- **Other identifiers:** Medicaid 110157687A (MA)
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Source: [NPI Profile](https://npiprofile.com/npi/1457995417) · Data from the CMS NPPES public registry.