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DEIRDRE ANN PARNELL
NPI 1225607997
Counselor - Mental Health in Hicksville, NY

Active since June 17, 2021PECOS Enrolled
950 SOUTH OYSTER BAY ROAD, HICKSVILLE, NY 11801(516) 822-6111(516) 396-0552 Get Directions Write a Review

NPPES record last updated: April 6, 2026. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Apr 6, 2026, Jun 17, 2021 (2 updates tracked since 2021).

About Deirdre Ann Parnell NPPES

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

DEIRDRE ANN PARNELL (NPI 1225607997) is an individual mental health provider in Hicksville, New York, licensed in New York (016401) and active in the NPI registry since June 2021. She is enrolled in Medicare PECOS and is a graduate of Other (2023).

NPPES Registry Identity

NPI1225607997
Entity TypeIndividualFemale
Primary Taxonomy101YM0800X
Provider Legal NameDEIRDRE ANN PARNELL
Location Address950 SOUTH OYSTER BAY ROADHicksville, NY 11801-3510
Mailing Address950 South Oyster Bay RoadHicksville, NY 11801-3510 · (516) 822-6111 · Fax (516) 396-0552
Phone(516) 822-6111
Fax(516) 396-0552
Sole ProprietorNo
Medical School CMSOtherGraduated 2023
Enumeration DateJune 17, 2021
Last NPPES UpdateApril 6, 20262 updates tracked since enumeration
NPPES CertifiedApril 6, 2026
✔ NPI 1225607997 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 NY · 016401
950 SOUTH OYSTER BAY ROAD, Hicksville, NY 11801
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Other Names 1

Other Name (5)Deidre Ann Parnell

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Deirdre Ann Parnell is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID1850885716
PECOS Enrollment IDI20251209002836
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 Deirdre Parnell reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Central Nassau Guidance & Counseling Services, Inc.
Same address
Community/Behavioral Health
950 S OYSTER BAY RD
Hicksville, NY 11801
  • Reassigned Medicare billing, New York enrollment
  • 77 clinicians in this Medicare group
NPI 1114928462 (516) 822-6111

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.

MS. YVES-MARTINE LAMARRE RN
Registered Nurse
950 SOUTH OYSTER BAY ROAD
HICKSVILLE, NY 11801
Nassau County (516) 822-6111
SARA NICOLE RUSSO
Counselor
950 SOUTH OYSTER BAY ROAD
HICKSVILLE, NY 11801
Nassau County (516) 433-7681
ASHLEIGH DEVIVO
Counselor (Mental Health)
950 SOUTH OYSTER BAY ROAD
HICKSVILLE, NY 11801
Nassau County (516) 822-6111
ELIAS NAUTH
Counselor
950 SOUTH OYSTER BAY ROAD
HICKSVILLE, NY 11801
Nassau County (516) 822-6111
STEVEN ROTHMAN
Student in an Organized Health Care Education/Training Program
950 SOUTH OYSTER BAY ROAD
HICKSVILLE, NY 11801
Nassau County (516) 822-6111
GREGORY CALEB MILLER LMSW
Social Worker
950 SOUTH OYSTER BAY ROAD
HICKSVILLE, NY 11801
Nassau County (516) 822-6111
EMILY SANDOMIR
Student in an Organized Health Care Education/Training Program
950 SOUTH OYSTER BAY ROAD
HICKSVILLE, NY 11801
Nassau County (516) 822-6111
BRIGITTE EDMA
Case Manager/Care Coordinator
950 SOUTH OYSTER BAY ROAD
HICKSVILLE, NY 11801
Nassau County (516) 492-1591

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 Deirdre Parnell's NPI number?

The NPI number for Deirdre Parnell is 1225607997. It was assigned to this individual provider in the NPPES registry on June 17, 2021. The provider is also known as Deidre Ann Parnell.

Where is Deirdre Parnell located?

Deirdre Parnell practices at 950 South Oyster Bay Road, Hicksville, NY 11801. The listed phone number is (516) 822-6111.

What is Deirdre Parnell's specialty?

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

Is Deirdre Parnell enrolled in Medicare?

Yes. Deirdre Parnell is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Deirdre Parnell's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Deirdre Parnell reassigns Medicare benefits to Central Nassau Guidance & Counseling Services, Inc. (Hicksville, NY). 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 Deirdre Parnell'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 Deirdre Parnell was last updated on April 6, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.