Ambiguous identityThis name matches 19 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
4
Roles reported
4
Others who share this name
19
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 In progress
We're building a sourced biography for every person — from filings, news, and public records, citing where each fact comes from. Person-name searches are our single largest source of demand, so this is what we're shipping next.
Affiliations
Organizations
Linked as the same person by IRS Schedule R, a shared officer mailing address, or shared fellow board members.
Calverthealth Medical Center INCDirector · $166.3M revenue · Prince Frederick, MDCALVERTHEALTH MEDICAL CENTER PROVIDES QUALITY INPATIENT AND AMBULATORY HEALTH CARE TO THE PEOPLE OF SOUTHERN MARYLAND THAT IS ACCESSIBLE,…Filed FY2023, FY2019 · Source: Form 990, Part VII
Calvert Health System INCDirector · $29.5M revenue · Prince Frederick, MDCALVERT HEALTH SYSTEM, INC. WAS ORGANIZED AND AT ALL TIMES OPERATES EXCLUSIVELY FOR THE BENEFIT OF CalvertHealth Medical Center. CALVERT HEALTH…Filed FY2023, FY2019 · Source: Form 990, Part VII
Cmh Holding CoSecretary · $62K revenue · Prince Frederick, MDTHE CORPORATION IS FORMED AND SHALL BE OPERATED EXCLUSIVELY FOR THE PURPOSES OF: (1) HOLDING TITLE TO REAL, PERSONAL AND INTANGIBLE PROPERTY ON…Filed FY2022, FY2021 · Source: Form 990, Part VII
Cmh II Holding CoSecretary · $13K revenue · Prince Frederick, MDTHE CORPORATION IS FORMED AND SHALL BE OPERATED EXCLUSIVELY FOR THE PURPOSES OF: (1) HOLDING TITLE TO REAL, PERSONAL AND INTANGIBLE PROPERTY ON…Filed FY2022, FY2021 · Source: Form 990, Part VII
Disambiguation
Other people named Karen O'Brien
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.
K
Karen O'Brien2 organizations · Stoughton, MA, Peabody, MASociety of St Vincent De Paul in the Archdiocese of Boston INC
K
Karen O'Brien2 organizations · Richmond, VAHealing Place
K
Karen O'Brien1 organization · Woodstock, IL1642 McHenry County Fed of Teachers
K
Karen O'Brien1 organization · Kirtland, OHHerb Society of America INC
K
Karen O'Brien1 organization · Seattle, WARainier Valley Historical Society
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.