MS. LESLIE HILLEARY LCSW-C
NPI 1124101837
Social Worker - Clinical in Silver Spring, MD
About Ms. Leslie Hilleary Lcsw-c NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MS. LESLIE HILLEARY LCSW-C (NPI 1124101837) is an individual clinical provider in Silver Spring, Maryland and active in the NPI registry since October 2006. She is enrolled in Medicare PECOS and is a graduate of Other (1998).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 2
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
Ms. Leslie Hilleary Lcsw-c 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 Leslie Hilleary reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Silver Spring, MD 20910
- Reassigned Medicare billing, District of Columbia enrollment
- 234 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 20910 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.
SILVER SPRING, MD 20910
SILVER SPRING, MD 20910
SILVER SPRING, MD 20910
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 Leslie Hilleary's NPI number?
The NPI number for Leslie Hilleary is 1124101837. It was assigned to this individual provider in the NPPES registry on October 24, 2006.
Where is Leslie Hilleary located?
Leslie Hilleary practices at 1500 Forest Glen Rd, Silver Spring, MD 20910. The listed phone number is (301) 754-7000.
What is Leslie Hilleary's specialty?
The primary specialty registered for this NPI is Social Worker, specializing in Clinical, with taxonomy code 1041C0700X.
Is Leslie Hilleary enrolled in Medicare?
Yes. Leslie Hilleary 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 Leslie Hilleary's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Leslie Hilleary reassigns Medicare benefits to Professional Services Of Holy Cross (Silver Spring, MD). 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 Leslie Hilleary'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 Leslie Hilleary was last updated on March 27, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 years 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.
# Ms. Leslie Hilleary, LCSW-C · NPI 1124101837
Clinical provider in Silver Spring, Maryland. Individual provider, active in the CMS NPPES registry since October 24, 2006.
## Identity
- **NPI:** 1124101837 (Entity type: Individual)
- **Enumerated:** October 24, 2006
- **Primary specialty:** Social Worker - Clinical · taxonomy 1041C0700X
- **Sole proprietor:** No
## Practice location
- **Address:** 1500 FOREST GLEN RD, Silver Spring, MD 20910-1483
- **Phone:** (301) 754-7000
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment
- **Bills Medicare through:** Professional Services Of Holy Cross (NPI 1487692828, Silver Spring, MD), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1998
## Record status
- **NPPES last updated:** March 27, 2015
- **Other identifiers:** Medicaid 4101774000 (MD); Medicare PIN 020758P80 (DC)
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Source: [NPI Profile](https://npiprofile.com/npi/1124101837) · Data from the CMS NPPES public registry.