ROBIN RAY MUSTAIN MSW
NPI 1548254386
Social Worker - Clinical in Bethesda, MD
About Robin Ray Mustain Msw NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ROBIN RAY MUSTAIN MSW (NPI 1548254386) is an individual clinical provider in Bethesda, Maryland, licensed in Maryland (05752) and active in the NPI registry since September 2005. She has opted out of Medicare through January 1, 2027 and remains eligible to order and refer.
NPPES Registry Identity
Specialties & Licenses
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.
Medicare Enrollment Status
Opted out of Medicare
Robin Ray Mustain Msw 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 January 1, 2017 through January 1, 2027.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 20814 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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.
BETHESDA, MD 20814
BETHESDA, MD 20814
BETHESDA, MD 20814
BETHESDA, MD 20814
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 Robin Mustain's NPI number?
The NPI number for Robin Mustain is 1548254386. It was assigned to this individual provider in the NPPES registry on September 8, 2005.
Where is Robin Mustain located?
Robin Mustain practices at 4400 E West Hwy Suite 720, Bethesda, MD 20814. The listed phone number is (301) 652-3744.
What is Robin Mustain's specialty?
The primary specialty registered for this NPI is Social Worker, specializing in Clinical, with taxonomy code 1041C0700X.
Is Robin Mustain enrolled in Medicare?
No. Robin Mustain has opted out of Medicare through January 1, 2027. Care is provided under private contracts, and Medicare does not pay for services furnished by providers who have opted out. The provider remains eligible to order and refer services for Medicare patients.
When was this NPI record last updated?
The NPPES record for Robin Mustain was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 40 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.
# Robin Ray Mustain, MSW · NPI 1548254386
Clinical provider in Bethesda, Maryland. Individual provider, active in the CMS NPPES registry since September 8, 2005.
## Identity
- **NPI:** 1548254386 (Entity type: Individual)
- **Enumerated:** September 8, 2005
- **Primary specialty:** Social Worker - Clinical · taxonomy 1041C0700X
- **State license:** 05752 (Maryland)
- **Sole proprietor:** No
## Practice location
- **Address:** 4400 E WEST HWY, SUITE 720, Bethesda, MD 20814-4524
- **Phone:** (301) 652-3744
## Medicare
- **Medicare:** Opted out of Medicare (opt-out affidavit on file, in effect through January 1, 2027); services are provided under private contract
## Record status
- **NPPES last updated:** July 13, 2026
---
Source: [NPI Profile](https://npiprofile.com/npi/1548254386) · Data from the CMS NPPES public registry.