Margaret Mary Brennan, M.D.
Cardiovascular Disease Physician · Baltimore, MD
Margaret Mary Brennan, M.D. is a cardiovascular disease physician with a practice address in Baltimore, Maryland, and NPI 1851489207, issued on Oct 11, 2006. Check the license (Maryland D35595, as entered in NPPES) on the Maryland Board of Physicians; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Margaret Mary Brennan
- Credential
- M.D.
- Primary taxonomy
- Cardiovascular Disease Physician 207RC0000X
- License numbers
- D35595 MD
15409 TN
Self-reported in NPPES; status is on the state search - Practice location
- 6569 N Charles St, Baltimore, MD 21204
- Phone
- (443) 849-8989
- Enumerated
- Oct 11, 2006
- Record last updated
- Sep 14, 2022
- Medicaid ID
- 533771200 MD
- Entity
- Type 1 · individual
Also registered at 6569 N Charles St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Dominique Allen, MDObstetrics & Gynecology Physician1508973223
- Barbara Bell, MDCardiovascular Disease Physician1629120522
- Michelle Bianchi, OTROccupational Therapist1750335816
- Melissa Bidlack, CCC-SLPSpeech-Language Pathologist1831511625
- Ray Gervacio Blanco, MDSurgical Oncology Physician1891773966
- Joan Blomquist, M.D.Urogynecology and Reconstructive Pelvic Surgery (Obstetrics & Gynecology) Physician1831117472
Verify Margaret Mary Brennan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaryland Board of Physicians
Search for license D35595Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Cardiovascular Disease Physician providers in Maryland
There are 613 cardiovascular disease physician records in Maryland. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
Other cardiovascular disease physician records in Maryland
- Seyed Hossein Aalaei-Andabili, M.DBaltimore, MD1215469515
- Leith Abdulla, M.D.Olney, MD1861606782
- Tsion Aberra, M.D.Chevy Chase, MD1255863825
- Rasaq Abu, M.D.Berwyn Heights, MD1578663019
- Ahmed Abu Haniyeh, M.DSalisbury, MD1942753389
- Mohammed Abuzahra, MDBaltimore, MD1053366013
- Stephen Achuff, M.D.Baltimore, MD1326001033
- Srinivas Addala, M.D.Clinton, MD1447241872
- Ramesh Agarwal, MDSalisbury, MD1104926021
- Rafique Ahmed, MDBaltimore, MD1457354854
Common questions
What is Margaret Mary Brennan, M.D.'s NPI number?
Margaret Mary Brennan, M.D.'s National Provider Identifier (NPI) is 1851489207, issued on Oct 11, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Margaret Mary Brennan, M.D. located?
The NPPES record lists a practice address at 6569 N Charles St, Baltimore, MD, 21204. Phone: (443) 849-8989. Providers update this record themselves, so call before visiting.
How can I verify Margaret Mary Brennan, M.D.'s license?
NPPES lists Maryland license number D35595, as entered by the provider. Search the Maryland Board of Physicians at https://www.mbp.state.md.us/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.