MARJORIE BRENNAN MD
NPI 1285724096
Anesthesiology - Pediatric Anesthesiology in Washington, DC
About Marjorie Brennan Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARJORIE BRENNAN MD (NPI 1285724096) is an individual pediatric anesthesiology provider in Washington, District Of Columbia, licensed in District Of Columbia (MD32115) and active in the NPI registry since October 2006. She is enrolled in Medicare PECOS, maintains a secondary practice location in Washington, and is a graduate of University Of Michigan Medical School (1987).
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Marjorie Brennan Md 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 20010 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.
WASHINGTON, DC 20010
WASHINGTON, DC 20010
WASHINGTON, DC 20010
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 Marjorie Brennan's NPI number?
The NPI number for Marjorie Brennan is 1285724096. It was assigned to this individual provider in the NPPES registry on October 13, 2006.
Where is Marjorie Brennan located?
Marjorie Brennan practices at 111 Michigan Ave NW, Washington, DC 20010. The listed phone number is (202) 884-2025.
What is Marjorie Brennan's specialty?
The primary specialty registered for this NPI is Anesthesiology, specializing in Pediatric Anesthesiology, with taxonomy code 207LP3000X.
Is Marjorie Brennan enrolled in Medicare?
Yes. Marjorie Brennan 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.
When was this NPI record last updated?
The NPPES record for Marjorie Brennan was last updated on February 18, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.
# Marjorie Brennan, MD · NPI 1285724096
Pediatric Anesthesiology physician in Washington, District of Columbia. Individual provider, active in the CMS NPPES registry since October 13, 2006.
## Identity
- **NPI:** 1285724096 (Entity type: Individual)
- **Enumerated:** October 13, 2006
- **Primary specialty:** Anesthesiology - Pediatric Anesthesiology · taxonomy 207LP3000X
- **State license:** MD32115 (District of Columbia)
- **Sole proprietor:** No
## Practice location
- **Address:** 111 MICHIGAN AVE NW, Washington, DC 20010-2978
- **Phone:** (202) 884-2025
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Medical school:** University Of Michigan Medical School, class of 1987
## Record status
- **NPPES last updated:** February 18, 2026
---
Source: [NPI Profile](https://npiprofile.com/npi/1285724096) · Data from the CMS NPPES public registry.