CORNERSTONE MONTGOMERY, INC.
Medicare Clinicians for NPI 1134591985
Clinic/Center - Mental Health (Including Community Mental Health Center) in Rockville, MD
Clinicians Billing Medicare Through This Organization CMS
Clinicians who reassign their Medicare billing to this organization, per CMS enrollment records.
Cornerstone Montgomery, Inc. in Rockville, MD bills Medicare for 50 clinicians across 5 Medicare specialties. The largest specialties are Nurse Practitioner with 16, Psychiatry with 14 and Clinical Social Worker with 13. Of these, 25 practice within 10 miles. Search by name or filter by specialty; each name links to that clinician's NPI profile.
Nurse Practitioner (16)
Psychiatry (14)
Clinical Social Worker (13)
Mental Health Counselor (6)
Clinical Psychologist (1)
About this data
Medicare reassignment. A clinician who works for a hospital, clinic or medical group usually signs a Medicare reassignment (form CMS-855R). It lets the organization bill Medicare for the clinician's services and receive the payment. This page lists the clinicians whose reassignment to Cornerstone Montgomery, Inc. appears in the CMS Revalidation Reassignment List.
Who is included. Clinicians who bill Medicare under their own NPI through this organization. A clinician can reassign to more than one organization, so the same name may also appear under other groups.
Addresses and phone numbers come from each clinician's own NPPES record, so they may point to another office or to the clinician's own practice.
Source: CMS Revalidation Reassignment List, October 2026 release; addresses, phone numbers and Medicare status from NPPES and PECOS. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
