OLGA M MARKUMAS-VIERA LMHC
NPI 1811509706
Counselor - Mental Health in Scarsdale, NY
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
Specialties & Licenses
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Olga M Markumas-viera Lmhc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Olga Markumas-viera reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Great Neck, NY 11021
- Reassigned Medicare billing, New York enrollment
- 9,353 clinicians in this Medicare group
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 4
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
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.
Which organization bills Medicare for Olga Markumas-viera's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Olga Markumas-viera reassigns Medicare benefits to North Shore-Lij Medical PC (Great Neck, 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 Olga Markumas-viera'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 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 35 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.
# Olga M Markumas-Viera, LMHC · NPI 1811509706
Mental Health provider in Scarsdale, New York. Individual provider, active in the CMS NPPES registry since August 20, 2020.
## Identity
- **NPI:** 1811509706 (Entity type: Individual)
- **Enumerated:** August 20, 2020
- **Primary specialty:** Counselor - Mental Health · taxonomy 101YM0800X
- **Sole proprietor:** No
## Practice location
- **Address:** 688 WHITE PLAINS RD STE 232, Scarsdale, NY 10583-5015
- **Phone:** (914) 614-4229
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment
- **Bills Medicare through:** North Shore-Lij Medical PC (NPI 1053688572, Great Neck, NY), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** September 24, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1811509706) · Data from the CMS NPPES public registry.