MS. GILLIAN RITTMASTER LMSW
NPI 1073906657
Social Worker in White Plains, NY

Q: What is Gillian Rittmaster's NPI number?

The NPI number for Gillian Rittmaster is 1073906657. It was assigned to this individual provider in the NPPES registry on March 6, 2015.

Q: What is Gillian Rittmaster's specialty?

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

Q: Is Gillian Rittmaster enrolled in Medicare?

No. Gillian Rittmaster has opted out of Medicare through October 21, 2026. Care is provided under private contracts, and Medicare does not pay for services furnished by providers who have opted out.

Active since March 06, 2015Opted out of Medicare · through Oct 21, 2026

845 N BROADWAY, C/O WJCS, WHITE PLAINS, NY 10603(914) 761-0600(914) 949-6778 Get Directions Write a Review

NPPES record last updated: March 6, 2015. Verified against the NPPES registry weekly; last sync: August 16, 2026.

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About Ms. Gillian Rittmaster Lmsw NPPES

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

MS. GILLIAN RITTMASTER LMSW (NPI 1073906657) is an individual social worker in White Plains, New York, licensed in New York (089176) and active in the NPI registry since March 2015. She has opted out of Medicare through October 21, 2026.

NPPES Registry Identity

NPI1073906657

Entity TypeIndividualFemale

Primary Taxonomy104100000X

Provider Legal NameMS. GILLIAN RITTMASTERCredential: LMSW

Location Address845 N BROADWAY, C/O WJCSWhite Plains, NY 10603-2403

Mailing Address845 N Broadway, C/o WjcsWhite Plains, NY 10603-2403 · (914) 761-0600 · Fax (914) 949-6778

Phone(914) 761-0600

Fax(914) 949-6778

Sole ProprietorNo

Enumeration DateMarch 6, 2015

✔ NPI 1073906657 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 · 089176

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.

845 N BROADWAY, White Plains, NY 10603

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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

ⓘ

Opted out of Medicare

Ms. Gillian Rittmaster Lmsw has filed a Medicare opt-out affidavit. Services are provided under private contract between the provider and the patient, and are not billed to or reimbursed by Medicare. The opt-out is on file from October 21, 2024 through October 21, 2026.

Opt-Out Effective DateOctober 21, 2024

Opt-Out In Effect ThroughOctober 21, 2026Opt-out affidavits renew automatically every two years unless cancelled

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.

MAYA COOK MA

Student in an Organized Health Care Education/Training Program

845 N BROADWAY
WHITE PLAINS, NY 10603

Westchester County (914) 949-6761

MS. ELLEN GRANT LAMONOFF RPN

Registered Nurse

845 N BROADWAY, C/O WJCS
WHITE PLAINS, NY 10603

Westchester County (914) 761-0600

TAMIKA S ANGLIN PMHNP-BC

Nurse Practitioner (Psychiatric/Mental Health)

845 N BROADWAY
WHITE PLAINS, NY 10603

Westchester County (914) 423-4433

ALYSSA WILLIAMSON

Student in an Organized Health Care Education/Training Program

845 N BROADWAY
WHITE PLAINS, NY 10603

Westchester County (914) 761-0600

CANDICE W SPARKMAN LMSW

Social Worker

845 N BROADWAY
WHITE PLAINS, NY 10603

Westchester County (914) 761-0600

HOME HEALTH SERVICES OF WESTCHESTER JEWISH COMMUNITY SERVICES, INC.

Home Health

845 N BROADWAY
WHITE PLAINS, NY 10603

Westchester County (914) 761-0600

MS. ELLEN WEISBERG LMSW

Social Worker

845 N BROADWAY, C/O WJCS
WHITE PLAINS, NY 10603

Westchester County (914) 761-0600

MISS FRANCES FERNANDEZ

Registered Nurse

845 N BROADWAY, C/O WJCS
WHITE PLAINS, NY 10603

Westchester County (914) 761-0600

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 Gillian Rittmaster's NPI number?

The NPI number for Gillian Rittmaster is 1073906657. It was assigned to this individual provider in the NPPES registry on March 6, 2015.

Where is Gillian Rittmaster located?

Gillian Rittmaster practices at 845 N Broadway C/O Wjcs, White Plains, NY 10603. The listed phone number is (914) 761-0600.

What is Gillian Rittmaster's specialty?

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

Is Gillian Rittmaster enrolled in Medicare?

No. Gillian Rittmaster has opted out of Medicare through October 21, 2026. Care is provided under private contracts, and Medicare does not pay for services furnished by providers who have opted out.

When was this NPI record last updated?

The NPPES record for Gillian Rittmaster was last updated on March 6, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.