Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

OLGA M MARKUMAS-VIERA LMHC
NPI 1811509706
Counselor - Mental Health in Scarsdale, NY

Active since August 20, 2020PECOS Enrolled
688 WHITE PLAINS RD STE 232, SCARSDALE, NY 10583(914) 614-4229 Get Directions Write a Review

NPPES record last updated: September 24, 2026. Verified against the NPPES registry weekly; last sync: October 04, 2026.

Record update history: Sep 24, 2026, Aug 20, 2020 (2 updates tracked since 2020).

About Olga M Markumas-viera Lmhc NPPES

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

OLGA M MARKUMAS-VIERA LMHC (NPI 1811509706) is an individual mental health provider in Scarsdale, New York and active in the NPI registry since August 2020. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1811509706
Entity TypeIndividualFemale
Primary Taxonomy101YM0800X
Provider Legal NameOLGA M MARKUMAS-VIERACredential: LMHC
Location Address688 WHITE PLAINS RD STE 232Scarsdale, NY 10583-5015
Mailing Address400 Columbus Ave Ste 200eValhalla, NY 10595-1392 · (914) 614-4229
Sole ProprietorNo
Enumeration DateAugust 20, 2020
Last NPPES UpdateSeptember 24, 20262 updates tracked since enumeration
NPPES CertifiedSeptember 24, 2026
✔ NPI 1811509706 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyCounselor · Mental HealthBehavioral Health & Social Service Providers
Taxonomy Code101YM0800X
688 WHITE PLAINS RD STE 232, Scarsdale, NY 10583

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Olga M Markumas-viera Lmhc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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.

Other Providers at the Same Location NPPES 4

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

Counselor (Mental Health)
688 WHITE PLAINS RD STE 232
SCARSDALE, NY 10583
Counselor (Mental Health)
688 WHITE PLAINS RD STE 232
SCARSDALE, NY 10583
Counselor (Mental Health)
688 WHITE PLAINS RD STE 232
SCARSDALE, NY 10583
Counselor (Professional)
688 WHITE PLAINS RD STE 232
SCARSDALE, NY 10583

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 Olga Markumas-viera's NPI number?

The NPI number for Olga Markumas-viera is 1811509706. It was assigned to this individual provider in the NPPES registry on August 20, 2020.

Where is Olga Markumas-viera located?

Olga Markumas-viera practices at 688 White Plains Rd Ste 232, Scarsdale, NY 10583. The listed phone number is (914) 614-4229.

What is Olga Markumas-viera's specialty?

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

Is Olga Markumas-viera enrolled in Medicare?

Yes. Olga Markumas-viera is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Olga Markumas-viera was last updated on September 24, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 days 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.