Ambiguous identityThis name matches 2 other individuals we could not verify as the same person. Each is kept as a separate record below — treat them as distinct people unless an explicit match is confirmed.
Organizations
3
Roles reported
3
Reported compensation
$1.4M
Others who share this name
2
Who this is
Profile
Everything on the left is verified from the IRS filings. The biography on the right is compiled from public web sources and grounded to that filed record.
Facts extracted directly from each organization's Form 990, Part VII.
Biography Web-sourced
Dr. John Marshall is Executive Vice President of Medical Affairs and Chief Medical Officer at Maimonides Health in Brooklyn, New York.
An emergency medicine physician with an MBA, he has been with Maimonides since 2003, serving as Chair of Emergency Medicine and Residency Program Director before his promotion to CMO in 2024.
Compiled from public web sources (1 cited), grounded to the filed record.
Track record
Career & tenure
Real tenure, career, and education — from public web sources, what you need to vet a founder or leader beyond the filing window.
Tenure here
CMO/EVP Medical Affairs since May 2024; with Maimonides since 2003
Education
MD (Emergency Medicine)
MBA
Affiliations
Organizations
Linked as the same person by IRS Schedule R, a shared officer mailing address, or shared fellow board members.
Maimonides Medical Center-EVP, Medical Affairs · $1.8B revenue · Brooklyn, NYSEE SCHEDULE Opay $1.1M → $1.4MFiled FY2024 · Source: Form 990, Part VII
$1.4Mreported comp
New York Community Hospital of Brooklyn INCEVP/Medical Affairs · $148.2M revenue · Brooklyn, NYNEW YORK COMMUNITY HOSPITAL IS COMMITTED TO PROVIDING QUALITY CARE WITH COMPASSION AND DIGNITY TO all PATIENTS AND TO THE COMMUNITY.Filed FY2024 · Source: Form 990, Part VII
Malmonides Research and Development FoundationDirector · $907K revenue · Brooklyn, NYMaimonides Research and Development FOUNDATION AWARDS GRANTS FOR RESEARCH AND DEVELOPMENT ACTIVITIES PRIMARILY TO PHYSICIANS ASSOCIATED WITH…Filed FY2024, FY2023, FY2022, FY2021, FY2020 · Source: Form 990, Part VII
Disambiguation
Other people named John Marshall MD
Different individuals who share this name, separated by IRS Schedule R, mailing address, and shared-board evidence. The 990 carries no person identifier, so some may still be the same person.
J
John Marshall MD1 organization · Paradise Valley, AZParadise Valley Hospital Medical Staff
J
John Marshall MD1 organization · Washington, DCColorectal Cancer Alliance INC
Network
Serves alongside
Other officers, directors & key employees at this person's organizations, by latest reported compensation.
Public data from IRS Form 990 e-file & the Business Master File. Individuals appear here because they were named as an officer, director, or key employee on a nonprofit's Form 990; people are grouped by name plus corroborating evidence (Schedule R, shared address, shared board members). · philanthropy.org
Sign-in is temporarily unavailable
Leave your email and we’ll let you know when you can finish signing in and follow
the organization.
