ONE MENTAL HEALTH LLC
NPI 1699407460
Clinic/Center - Adolescent and Children Mental Health in Bethesda, MD
About One Mental Health Llc NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ONE MENTAL HEALTH LLC (NPI 1699407460), doing business as Ellie Mental Health Of Montgomery County, is a healthcare organization registered as an adolescent and children mental health in Bethesda, Maryland and active in the NPI registry since June 2022. The organization maintains 2 additional practice locations and lists Shahzad Dastgir, Owner, as its authorized official.
NPPES Registry Identity
Specialties & Licenses 2
Other Names 1
Secondary Practice Locations 2
Medicare Participation & PECOS CMS
Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
One Mental Health Llc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Clinicians Billing Medicare Through This Organization
16Medicare enrollment records show 16 clinicians reassign Medicare billing to One Mental Health LLC, which bills Medicare for the services they deliver. Of these, 4 practice at this address and 10 within 10 miles. They are listed nearest first.
Clinicians by Medicare Specialty 5
Clinicians, nearest first (16)
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
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 One Mental Health LLC's NPI number?
The NPI number for One Mental Health LLC is 1699407460. It was assigned to this organization in the NPPES registry on June 29, 2022. The provider is doing business as Ellie Mental Health of Montgomery County.
Where is One Mental Health LLC located?
One Mental Health LLC is located at 8120 Woodmont Ave Ste 840, Bethesda, MD 20814. The listed phone number is (240) 618-2889.
What is One Mental Health LLC's specialty?
The primary specialty registered for this NPI is Clinic/Center, specializing in Adolescent and Children Mental Health, with taxonomy code 261QM0855X.
Is One Mental Health LLC enrolled in Medicare?
Yes. One Mental Health LLC is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through One Mental Health LLC?
According to the CMS Revalidation Reassignment List (October 2026 release), 16 clinicians in 5 Medicare specialties reassign their Medicare billing to One Mental Health LLC. A 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 the clinician's services. The largest specialties are Clinical Social Worker (7), Mental Health Counselor (6) and Clinical Psychologist (1). Of these, 4 practice at this address and 10 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
When was this NPI record last updated?
The NPPES record for One Mental Health LLC was last updated on January 13, 2026. 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.
# One Mental Health Llc · NPI 1699407460
Adolescent and Children Mental Health organization in Bethesda, Maryland. Organization record, active in the CMS NPPES registry since June 29, 2022.
## Identity
- **NPI:** 1699407460 (Entity type: Organization)
- **Enumerated:** June 29, 2022
- **Primary specialty:** Clinic/Center - Adolescent and Children Mental Health · taxonomy 261QM0855X
- **Also known as:** Ellie Mental Health of Montgomery County (Doing Business As)
- **Organization subpart:** No
- **Authorized official:** Shahzad Dastgir, OWNER
## Practice location
- **Address:** 8120 WOODMONT AVE STE 840, Bethesda, MD 20814-2789
- **Phone:** (240) 618-2889 · **Fax:** (240) 623-9858
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 16 clinicians in 5 Medicare specialties reassign Medicare billing to this organization (form CMS-855R); largest: Clinical Social Worker (7), Mental Health Counselor (6), Clinical Psychologist (1); 4 practice at this address and 10 within 10 miles · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** January 13, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1699407460) · Data from the CMS NPPES public registry.