Dr. Marjorie Brennan, MD
- Hospital affiliations
- 1
- Industry payments
- $122
- Medical groups
- 4
- State license
- 1
- Year NPI issued
- 2006
- Practice address
- 111 Michigan Ave, NW, Washington, DC 20010
- Practice phone
- Call (202) 476-5000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Brennan's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Marjorie Brennan is a pediatric anesthesiology physician in Washington, District of Columbia
Dr. Brennan practices at Children's National Hospital in Washington, District of Columbia, part of Children's National Hospital.
Dr. Brennan's NPI, 1285724096, was assigned on October 13, 2006. Dr. Brennan graduated from University of Michigan Medical School in 1987. Dr. Brennan holds District of Columbia license MD32115.
- NPI
- 1285724096NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4880876598
- NPI enumeration date
- October 13, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (202) 476-5000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 65
- Medical school graduation
- 1987
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Marjorie Brennan practices at Children's National Hospital in Washington, District of Columbia
Dr. Brennan's primary practice is Children's National Hospital, at 111 Michigan Ave, NW, Washington, DC 20010 in The District County. The practice phone is (202) 476-5000.
- Children's National Hospital111 Michigan Ave, NW, Washington, DC 20010 · The District CountyPhone(202) 476-5000
Source: Dmand AI Affiliation Data
Dr. Marjorie Brennan is affiliated with 2 sites of care and 4 medical groups
Dr. Brennan's primary practice is Children's National Hospital in Washington, District of Columbia, part of Children's National Hospital. The medical group on file is Johns Hopkins University. Dmand AI also links Dr. Brennan to 3 more medical groups and 1 dialysis center, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Marjorie Brennan's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Brennan practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Children's National Hospital | Available with a free account |
| +1 more site and 3 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Children's National Hospital and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Marjorie Brennan is one of 34 pediatric anesthesiology physicians in District of Columbia
Pediatric anesthesiology is Dr. Brennan's primary specialty in the NPI Registry, under taxonomy code 207LP3000X. Dr. Brennan is licensed in District of Columbia.
Specialties and state licenses
- Pediatric anesthesiology, District of ColumbiaPrimary
Pediatric anesthesiology physicians near Dr. Brennan
Counts of pediatric anesthesiology physicians with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Marjorie Brennan's patients have a median age of 7
Across all payers, Dmand AI patient panel data puts Dr. Brennan's median patient age at 7, with 45% women.
Dr. Brennan's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 7
Patient panel by sex, all payers
- Women45%
- Men55%
Source: Dmand AI Patient Panel Data
How Dr. Marjorie Brennan takes part in Medicare
Dr. Brennan accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
Dr. Marjorie Brennan received $122 in industry payments from 2019 to 2022
CMS Open Payments shows 2 general payments to Dr. Brennan from 2 drug and device companies from 2019 to 2022. Food and beverage make up the largest share, 100% of the total. Acacia Pharma Inc paid the most, $77.
General payments to Dr. Brennan by program year, 2019 to 2022
Companies that paid Dr. Brennan the most, 2019 to 2022
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Marjorie Brennan graduated from University of Michigan Medical School
Dr. Brennan graduated from University of Michigan Medical School in 1987.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Marjorie Brennan's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Marjorie Brennan
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Marjorie Brennan's NPI number?
Dr. Marjorie Brennan's NPI number is 1285724096. It was assigned on October 13, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Marjorie Brennan?
Dr. Marjorie Brennan is a pediatric anesthesiology physician in Washington, District of Columbia. The primary specialty in the NPI Registry is Pediatric Anesthesiology Physician (taxonomy code 207LP3000X).
Where does Dr. Marjorie Brennan practice?
Dr. Brennan practices at 111 Michigan Ave, NW, Washington, DC 20010. Dr. Brennan's primary practice is Children's National Hospital in Washington, District of Columbia, part of Children's National Hospital. Dmand AI also links Dr. Brennan to 3 medical groups and 1 dialysis center.
What is Dr. Marjorie Brennan's office phone number?
The practice phone on file for Dr. Brennan is (202) 476-5000.
What is Dr. Marjorie Brennan's medical license number?
Dr. Brennan holds District of Columbia license MD32115.
Which hospitals is Dr. Marjorie Brennan affiliated with?
Dr. Brennan practices at Children's National Hospital in Washington, District of Columbia.
What medical group is Dr. Marjorie Brennan part of?
Dr. Brennan is linked to Johns Hopkins University. Dmand AI links Dr. Brennan to 3 more medical groups.
Does Dr. Marjorie Brennan accept Medicare?
Yes. CMS lists Dr. Brennan as accepting Medicare assignment.
Where did Dr. Marjorie Brennan go to medical school?
Dr. Brennan graduated from University of Michigan Medical School in 1987.
Has Dr. Marjorie Brennan received payments from drug or device companies?
CMS Open Payments shows $122 in general payments to Dr. Brennan from 2 companies from 2019 to 2022. The largest total came from Acacia Pharma Inc.
How long has Dr. Marjorie Brennan been practicing?
Dr. Brennan graduated from medical school in 1987, 39 years ago.
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