MS. KAREN MAHONEY-MALCOMSON LMSW
NPI 1477734549
Social Worker in West Hempstead, NY

Q: What is Karen Mahoney-malcomson's NPI number?

The NPI number for Karen Mahoney-malcomson is 1477734549. It was assigned to this individual provider in the NPPES registry on November 17, 2007.

Q: What is Karen Mahoney-malcomson's specialty?

The primary specialty registered for this NPI is Social Worker with taxonomy code 104100000X.

Active since November 17, 2007PECOS Enrolled

600 HEMPSTEAD TPKE, WEST HEMPSTEAD, NY 11552(516) 481-2890(516) 481-2723 Get Directions Write a Review

NPPES record last updated: November 17, 2007. Verified against the NPPES registry weekly; last sync: October 25, 2026.

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About Ms. Karen Mahoney-malcomson Lmsw NPPES

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

MS. KAREN MAHONEY-MALCOMSON LMSW (NPI 1477734549) is an individual social worker in West Hempstead, New York, licensed in New York (073294-1) and active in the NPI registry since November 2007. She is enrolled in Medicare PECOS, is affiliated with Long Island Jewish Medical Center, and is a graduate of Other (2005).

NPPES Registry Identity

NPI1477734549

Entity TypeIndividualFemale

Primary Taxonomy104100000X

Provider Legal NameMS. KAREN MAHONEY-MALCOMSONCredential: LMSW

Location Address600 HEMPSTEAD TPKEWest Hempstead, NY 11552-1095

Mailing Address600 Hempstead TpkeWest Hempstead, NY 11552-1095 · (516) 481-2890 · Fax (516) 481-2723

Phone(516) 481-2890

Fax(516) 481-2723

Sole ProprietorNo

Medical School CMSOtherGraduated 2005

Enumeration DateNovember 17, 2007

✔ NPI 1477734549 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySocial WorkerBehavioral Health & Social Service Providers

Taxonomy Code104100000X

License✔ Licensed in NY · 073294-1

Definition

A social worker is a person who is qualified by a Social Work degree, and licensed, certified or registered by the state as a social worker to practice within the scope of that license. A social worker provides assistance and counseling to clients and their families who are dealing with social, emotional and environmental problems. Social work services may be rendered to individuals, families, groups, and the public.

600 HEMPSTEAD TPKE, West Hempstead, NY 11552

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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Oscar Health.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Ms. Karen Mahoney-malcomson Lmsw is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID9931532124

PECOS Enrollment IDI20191202000954

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 Karen Mahoney-malcomson reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

North Shore - Lij Medical PC

3.9 mi

Internal Medicine

270-05 76TH AVE
New Hyde Park, NY 11040

Reassigned Medicare billing, New York enrollment
9,353 clinicians in this Medicare group

NPI 1790043479 (516) 465-8089

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Long Island Jewish Medical Center

Acute Care Hospitals · New Hyde Park, NY

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number330195

Location270 - 05 76th AvenueNew Hyde Park, NY 11040 · Nassau County

Emergency services Birthing friendly

Other Providers at the Same Location NPPES 7

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

SKYELER KOPPER LMSW

Social Worker

600 HEMPSTEAD TPKE
WEST HEMPSTEAD, NY 11552

Nassau County (516) 481-2890

BARBARA GILBERT L.C.S.W.

Counselor (Addiction (Substance Use Disorder))

600 HEMPSTEAD TPKE, WEST HEMPSTEAD
WEST HEMPSTEAD, NY 11552

Nassau County (516) 481-2890

URGDENT DENTAL CARE

Dentist (General Practice)

600 HEMPSTEAD TPKE, SUITE.100
WEST HEMPSTEAD, NY 11552

Nassau County (516) 292-3300

PROJEACT OUTREACH

Clinic/Center

600 HEMPSTEAD TPKE
W HEMPSTEAD, NY 11552

Nassau County (516) 481-2890

MR. JOHAN ENRIQUE MEJIA LCSW

Social Worker (Clinical)

600 HEMPSTEAD TPKE
WEST HEMPSTEAD, NY 11552

Nassau County (516) 481-2890

DR. RICHARD ALAN MENZEL DDS

Oral & Maxillofacial Surgery

600 HEMPSTEAD TPKE, SUITE 100
WEST HEMPSTEAD, NY 11552

Nassau County (516) 481-2277

MISS HELENA SOLOMON LMHC

Counselor (Mental Health)

600 HEMPSTEAD TPKE
WEST HEMPSTEAD, NY 11552

Nassau County (516) 481-2890

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 Karen Mahoney-malcomson's NPI number?

The NPI number for Karen Mahoney-malcomson is 1477734549. It was assigned to this individual provider in the NPPES registry on November 17, 2007.

Where is Karen Mahoney-malcomson located?

Karen Mahoney-malcomson practices at 600 Hempstead Tpke, West Hempstead, NY 11552. The listed phone number is (516) 481-2890.

What is Karen Mahoney-malcomson's specialty?

The primary specialty registered for this NPI is Social Worker with taxonomy code 104100000X.

Is Karen Mahoney-malcomson enrolled in Medicare?

Yes. Karen Mahoney-malcomson is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Karen Mahoney-malcomson's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Karen Mahoney-malcomson reassigns Medicare benefits to North Shore - Lij Medical PC (New Hyde Park, 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 Karen Mahoney-malcomson's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Karen Mahoney-malcomson accept?

Health plans from Oscar Health list Karen Mahoney-malcomson 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.

Is Karen Mahoney-malcomson affiliated with any hospitals?

According to CMS data, Karen Mahoney-malcomson is affiliated with Long Island Jewish Medical Center.

When was this NPI record last updated?

The NPPES record for Karen Mahoney-malcomson was last updated on November 17, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.