MARSHALL SUMMAR MD
NPI 1336231745
Medical Genetics - Clinical Genetics (M.D.) in Chevy Chase, MD
About Marshall Summar Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARSHALL SUMMAR MD (NPI 1336231745) is an individual clinical genetics (m.d.) provider in Chevy Chase, Maryland, licensed in Tennessee (MD20951) and active in the NPI registry since September 2006. He is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Marshall Summar Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Marshall Summar reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Washington, DC 20010
- Reassigned Medicare billing, District of Columbia enrollment
- 1,417 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.
Other Providers at the Same Location NPPES 3
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
CHEVY CHASE, MD 20815
CHEVY CHASE, MD 20815
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 Marshall Summar's NPI number?
The NPI number for Marshall Summar is 1336231745. It was assigned to this individual provider in the NPPES registry on September 30, 2006.
Where is Marshall Summar located?
Marshall Summar practices at 5550 Friendship Blvd Ste 580, Chevy Chase, MD 20815. The listed phone number is (202) 379-8295.
What is Marshall Summar's specialty?
The primary specialty registered for this NPI is Medical Genetics, specializing in Clinical Genetics (M.D.), with taxonomy code 207SG0201X.
Is Marshall Summar enrolled in Medicare?
Yes. Marshall Summar is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Marshall Summar's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Marshall Summar reassigns Medicare benefits to Children's Hospital (Washington, DC). 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 Marshall Summar'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 Marshall Summar was last updated on October 18, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.
# Marshall Summar, MD · NPI 1336231745
Clinical Genetics (M.D.) physician in Chevy Chase, Maryland. Individual provider, active in the CMS NPPES registry since September 30, 2006.
## Identity
- **NPI:** 1336231745 (Entity type: Individual)
- **Enumerated:** September 30, 2006
- **Primary specialty:** Medical Genetics - Clinical Genetics (M.D.) · taxonomy 207SG0201X
- **State license:** MD20951 (Tennessee)
- **Sole proprietor:** No
## Practice location
- **Address:** 5550 FRIENDSHIP BLVD STE 580, Chevy Chase, MD 20815-7302
- **Phone:** (202) 379-8295
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Children's Hospital (NPI 1780800128, Washington, DC), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** October 18, 2023
---
Source: [NPI Profile](https://npiprofile.com/npi/1336231745) · Data from the CMS NPPES public registry.