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Person · officer / director

Mark Knackendoffel

Director · Manhattan Country Club INC

Director at Manhattan Country Club INC. Listed as an officer, director, or key employee across 4 organizations on the Form 990 record.

Ambiguous identity This name matches 1 other individual 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
1

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.

✓ Verified from filings
●
Reported as Director of Manhattan Country Club INC, based in Manhattan, KS.
●
Also listed as Director of Stormont-Vail Healthcare INC, uncompensated.
●
Also listed as Chair-Elect of Manhattan Chamber Foundation, uncompensated.
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.

M
Manhattan Chamber Foundation Chair-Elect · $39K revenue · Manhattan, KSTO SUPPORT THE MISSION OF MANHATTAN AREA CHAMBER OF COMMERCE, INCORPORATED THROUGH ENCOURAGING CONTRIBUTIONS.Filed FY2025 · Source: Form 990, Part VII
Stormont-Vail Healthcare INC Director · $1.2B revenue · Topeka, KSWORKING TOGETHER TO IMPROVE THE HEALTH-CARE OF OUR COMMUNITY BY PROVIDING QUALITY SERVICES REGARDLESS OF RACE, CREED, NATIONAL ORIGIN, HANDICAP, AGE…Filed FY2024, FY2023, FY2022, FY2021, FY2020, FY2019 · Source: Form 990, Part VII
Manhattan Area Chamber of Commerce Past Chair · $3.6M revenue · Manhattan, KSCREATE A POSITIVE ENVIRONMENT FOR BUSINESS SUCCESSFiled FY2024 · Source: Form 990, Part VII
Manhattan Country Club INC Director · $2.4M revenue · Manhattan, KSPROVIDE GOLF, DINING, SWIMMING AND OTHER ENTERTAINMENT FOR MEMBERSHIP.Filed FY2023 · Source: Form 990, Part VII

Disambiguation

Other people named Mark Knackendoffel

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.

M
Mark Knackendoffel 3 organizations · Wichita, KS, Manhattan, KSKansas Big Brothers Big Sisters INC

Network

Serves alongside

Other officers, directors & key employees at this person's organizations, by latest reported compensation.

C
Casey S Whale
Physician · FY2024
$2.0M
J
John K Ma
Physician · FY2024
$1.9M
M
Matthew J Wills
Physician · FY2024
$1.8M
R
Robert S Kenagy
President and CEO - Retired May 2025 · FY2024
$1.8M
J
John Ma
Physician · FY2023
$1.7M
T
Tewodros D Addisse
Physician · FY2024
$1.6M
B
Brian F Wilson
Physician · FY2024
$1.6M
K
Kelli Crabtree Wilson
Physician · FY2021
$1.6M
M
Michael Tilley
Physician · FY2022
$1.5M
C
Casey Whale
Physician · FY2023
$1.5M
B
Benjamin Boudreaux
Physician · FY2019
$1.4M
M
Matthew Wills
Physician · FY2023
$1.4M

Network

Recommendations

Written by other verified members of the network — visible once you're a verified person yourself.

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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