ARSEN MASTOV LCSW
NPI 1558664508
Social Worker - Clinical in Rego Park, NY
About Arsen Mastov Lcsw NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ARSEN MASTOV LCSW (NPI 1558664508) is an individual clinical provider in Rego Park, New York, licensed in New York (082007) and active in the NPI registry since December 2010. He is enrolled in Medicare PECOS and is a graduate of Other (2010).
NPPES Registry Identity
Specialties & Licenses
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Arsen Mastov Lcsw is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignment
Medicare enrollment records show Arsen Mastov reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
New York, NY 10018
- Reassigned Medicare billing, New York enrollment
- 358 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.
Areas of Expertise CMS Part B claims 2
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 11374 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
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.
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 Arsen Mastov's NPI number?
The NPI number for Arsen Mastov is 1558664508. It was assigned to this individual provider in the NPPES registry on December 14, 2010.
Where is Arsen Mastov located?
Arsen Mastov practices at 9777 Queens Blvd Ph, Rego Park, NY 11374. The listed phone number is (718) 896-9090.
What is Arsen Mastov's specialty?
The primary specialty registered for this NPI is Social Worker, specializing in Clinical, with taxonomy code 1041C0700X.
Is Arsen Mastov enrolled in Medicare?
Yes. Arsen Mastov is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organization bills Medicare for Arsen Mastov's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Arsen Mastov reassigns Medicare benefits to Jewish Board Of Family & Childrens Services Inc (New York, 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 Arsen Mastov's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Arsen Mastov accept?
Health plans from Oscar Health list Arsen Mastov 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.
When was this NPI record last updated?
The NPPES record for Arsen Mastov was last updated on December 28, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.
# Arsen Mastov, LCSW · NPI 1558664508
Clinical provider in Rego Park, New York. Individual provider, active in the CMS NPPES registry since December 14, 2010.
## Identity
- **NPI:** 1558664508 (Entity type: Individual)
- **Enumerated:** December 14, 2010
- **Primary specialty:** Social Worker - Clinical · taxonomy 1041C0700X
- **State license:** 082007 (New York)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 9777 QUEENS BLVD PH, Rego Park, NY 11374-3335
- **Phone:** (718) 896-9090
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment
- **Bills Medicare through:** Jewish Board Of Family & Childrens Services Inc (NPI 1689755662, New York, NY), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2010
## Record status
- **NPPES last updated:** December 28, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1558664508) · Data from the CMS NPPES public registry.