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KATHLEEN DELIA NIELSEN LMHC
NPI 1144011628
Counselor - Mental Health in Greenfield, MA

Active since May 14, 2025PECOS EnrolledAccepts Medicare Assignment
13 PROSPECT ST, GREENFIELD, MA 01301(978) 319-3517 Get Directions Write a Review

NPPES record last updated: May 14, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Kathleen Delia Nielsen Lmhc NPPES

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

KATHLEEN DELIA NIELSEN LMHC (NPI 1144011628) is an individual mental health provider in Greenfield, Massachusetts, licensed in Massachusetts (LMHC10003345) and active in the NPI registry since May 2025. She is enrolled in Medicare PECOS and is a graduate of Other (2022).

NPPES Registry Identity

NPI1144011628
Entity TypeIndividualFemale
Primary Taxonomy101YM0800X
Provider Legal NameKATHLEEN DELIA NIELSENCredential: LMHC
Location Address13 PROSPECT STGreenfield, MA 01301-3506
Mailing Address11 Walnut StGill, MA 01354-9791 · (978) 319-3517
Phone(978) 319-3517
Sole ProprietorNo
Medical School CMSOtherGraduated 2022
Enumeration DateMay 14, 2025
NPPES CertifiedMay 14, 2025
✔ NPI 1144011628 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyCounselor · Mental HealthBehavioral Health & Social Service Providers
Taxonomy Code101YM0800X
License✔ Licensed in MA · LMHC10003345
13 PROSPECT ST, Greenfield, MA 01301
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Taro Health, WellSense Health Plan.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

Kathleen Delia Nielsen Lmhc 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 ID2769992809
PECOS Enrollment IDI20250609001705
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 Kathleen Nielsen reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Total Wellness Centers, LLC
34 mi
Addiction Medicine
900 MEMORIAL AVE
West Springfield, MA 01089
  • Reassigned Medicare billing, Massachusetts enrollment
  • 37 clinicians in this Medicare group
NPI 1770816506 (413) 788-0100

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 10

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

GLORIA WHITE RN-PC
Registered Nurse (Psychiatric/Mental Health)
13 PROSPECT ST
GREENFIELD, MA 01301
Franklin County (413) 775-9345
DAVID WEIN LICSW
Social Worker (Clinical)
13 PROSPECT ST
GREENFIELD, MA 01301
Franklin County (413) 775-9345
SHARON O'BRIEN LMHC
Social Worker (Clinical)
13 PROSPECT ST
GREENFIELD, MA 01301
Franklin County (413) 775-9345
MELODY FRIEDRICH LMHC
Social Worker (Clinical)
13 PROSPECT ST
GREENFIELD, MA 01301
Franklin County (413) 775-9345
JASON ALDRICH LCSW
Social Worker
13 PROSPECT ST
GREENFIELD, MA 01301
Franklin County (413) 727-6180
MS. VIRGINIA GILSON MSW
Social Worker (Clinical)
13 PROSPECT ST
GREENFIELD, MA 01301
Franklin County (413) 775-9345
JURATE VALIUNAS RN
Registered Nurse
13 PROSPECT ST
GREENFIELD, MA 01301
Franklin County (413) 775-9345
NORIE AMET
Behavior Technician
13 PROSPECT ST
GREENFIELD, MA 01301
Franklin County (413) 358-5654

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 Kathleen Nielsen's NPI number?

The NPI number for Kathleen Nielsen is 1144011628. It was assigned to this individual provider in the NPPES registry on May 14, 2025.

Where is Kathleen Nielsen located?

Kathleen Nielsen practices at 13 Prospect St, Greenfield, MA 01301. The listed phone number is (978) 319-3517.

What is Kathleen Nielsen's specialty?

The primary specialty registered for this NPI is Counselor, specializing in Mental Health, with taxonomy code 101YM0800X.

Is Kathleen Nielsen enrolled in Medicare?

Yes. Kathleen Nielsen 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 Kathleen Nielsen's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Kathleen Nielsen reassigns Medicare benefits to Total Wellness Centers, LLC (West Springfield, 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 Kathleen Nielsen's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Kathleen Nielsen accept?

Health plans from Taro Health and WellSense Health Plan list Kathleen Nielsen 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 Kathleen Nielsen was last updated on May 14, 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.