Civic Intelligence

R William Mason MD PC

Plan context: R William Mason MD PC Profit Sharing Plan

EIN 04-2839145 • Needham, MA • 26 filings • 6 plans

560 Hillside AveNeedham, MA 02494
Current Snapshot

Latest Year

2024

2024 Participants

18

2024 Assets

$4,841,540

2024 Contributions

$364,598

Historical Graphs

Total Assets Over Time

Aggregate end-of-year assets by filing year, excluding zero-asset years

$4,841,540$2,420,770$0199920132024YearValue
$4,841,540Latest year 2024

Participants Over Time

Largest reported end-of-year plan headcount by filing year, used to avoid double-counting participants across overlapping plans

1890199920122024YearValue
18Latest year 2024

Company Timeline

Year summaries and individual filings are combined here so you can stay in one place while moving across years and plan filings.

Year / FilingFilingsParticipantsAssetsContributionsContrib./Participant
2024118$4,841,540$364,598$20,255iApproximate average salary by contribution assumption: employee only about $506,386 at 4% or $337,591 at 6%; with 50% employer match about $337,591 at 4% or $225,060 at 6%; with 100% employer match about $253,193 at 4% or $168,795 at 6%.
R William Mason MD PC Profit Sharing Plan-18$4,841,540$364,598$20,255iApproximate average salary by contribution assumption: employee only about $506,386 at 4% or $337,591 at 6%; with 50% employer match about $337,591 at 4% or $225,060 at 6%; with 100% employer match about $253,193 at 4% or $168,795 at 6%.
2023118$4,000,534$330,124$18,340iApproximate average salary by contribution assumption: employee only about $458,506 at 4% or $305,670 at 6%; with 50% employer match about $305,670 at 4% or $203,780 at 6%; with 100% employer match about $229,253 at 4% or $152,835 at 6%.
R William Mason MD PC Profit Sharing Plan-18$4,000,534$330,124$18,340iApproximate average salary by contribution assumption: employee only about $458,506 at 4% or $305,670 at 6%; with 50% employer match about $305,670 at 4% or $203,780 at 6%; with 100% employer match about $229,253 at 4% or $152,835 at 6%.
2022114$3,111,779$302,905$21,636iApproximate average salary by contribution assumption: employee only about $540,902 at 4% or $360,601 at 6%; with 50% employer match about $360,601 at 4% or $240,401 at 6%; with 100% employer match about $270,451 at 4% or $180,301 at 6%.
R William Mason MD PC Profit Sharing Plan-14$3,111,779$302,905$21,636iApproximate average salary by contribution assumption: employee only about $540,902 at 4% or $360,601 at 6%; with 50% employer match about $360,601 at 4% or $240,401 at 6%; with 100% employer match about $270,451 at 4% or $180,301 at 6%.
2021113$3,433,665$280,493$21,576iApproximate average salary by contribution assumption: employee only about $539,410 at 4% or $359,606 at 6%; with 50% employer match about $359,606 at 4% or $239,738 at 6%; with 100% employer match about $269,705 at 4% or $179,803 at 6%.
R William Mason MD PC Profit Sharing Plan-13$3,433,665$280,493$21,576iApproximate average salary by contribution assumption: employee only about $539,410 at 4% or $359,606 at 6%; with 50% employer match about $359,606 at 4% or $239,738 at 6%; with 100% employer match about $269,705 at 4% or $179,803 at 6%.
2020113$2,837,633$215,084$16,545iApproximate average salary by contribution assumption: employee only about $413,623 at 4% or $275,749 at 6%; with 50% employer match about $275,749 at 4% or $183,832 at 6%; with 100% employer match about $206,812 at 4% or $137,874 at 6%.
R William Mason MD PC Profit Sharing Plan-13$2,837,633$215,084$16,545iApproximate average salary by contribution assumption: employee only about $413,623 at 4% or $275,749 at 6%; with 50% employer match about $275,749 at 4% or $183,832 at 6%; with 100% employer match about $206,812 at 4% or $137,874 at 6%.
2019112$2,250,924$317,906$26,492iApproximate average salary by contribution assumption: employee only about $662,304 at 4% or $441,536 at 6%; with 50% employer match about $441,536 at 4% or $294,357 at 6%; with 100% employer match about $331,152 at 4% or $220,768 at 6%.
R William Mason MD PC Profit Sharing Plan-12$2,250,924$317,906$26,492iApproximate average salary by contribution assumption: employee only about $662,304 at 4% or $441,536 at 6%; with 50% employer match about $441,536 at 4% or $294,357 at 6%; with 100% employer match about $331,152 at 4% or $220,768 at 6%.
2018114$1,562,890$187,830$13,416iApproximate average salary by contribution assumption: employee only about $335,411 at 4% or $223,607 at 6%; with 50% employer match about $223,607 at 4% or $149,071 at 6%; with 100% employer match about $167,705 at 4% or $111,804 at 6%.
R William Mason MD PC Profit Sharing Plan-14$1,562,890$187,830$13,416iApproximate average salary by contribution assumption: employee only about $335,411 at 4% or $223,607 at 6%; with 50% employer match about $223,607 at 4% or $149,071 at 6%; with 100% employer match about $167,705 at 4% or $111,804 at 6%.
2017113$1,482,048$171,344$13,180iApproximate average salary by contribution assumption: employee only about $329,508 at 4% or $219,672 at 6%; with 50% employer match about $219,672 at 4% or $146,448 at 6%; with 100% employer match about $164,754 at 4% or $109,836 at 6%.
R William Mason MD PC Profit Sharing Plan-13$1,482,048$171,344$13,180iApproximate average salary by contribution assumption: employee only about $329,508 at 4% or $219,672 at 6%; with 50% employer match about $219,672 at 4% or $146,448 at 6%; with 100% employer match about $164,754 at 4% or $109,836 at 6%.
2016113$1,117,633$177,000$13,615iApproximate average salary by contribution assumption: employee only about $340,385 at 4% or $226,923 at 6%; with 50% employer match about $226,923 at 4% or $151,282 at 6%; with 100% employer match about $170,192 at 4% or $113,462 at 6%.
R William Mason MD PC Profit Sharing Plan-13$1,117,633$177,000$13,615iApproximate average salary by contribution assumption: employee only about $340,385 at 4% or $226,923 at 6%; with 50% employer match about $226,923 at 4% or $151,282 at 6%; with 100% employer match about $170,192 at 4% or $113,462 at 6%.
2015114$922,895$161,606$11,543iApproximate average salary by contribution assumption: employee only about $288,582 at 4% or $192,388 at 6%; with 50% employer match about $192,388 at 4% or $128,259 at 6%; with 100% employer match about $144,291 at 4% or $96,194 at 6%.
R William Mason MD PC Profit Sharing Plan-14$922,895$161,606$11,543iApproximate average salary by contribution assumption: employee only about $288,582 at 4% or $192,388 at 6%; with 50% employer match about $192,388 at 4% or $128,259 at 6%; with 100% employer match about $144,291 at 4% or $96,194 at 6%.
2014112$811,504$167,672$13,973iApproximate average salary by contribution assumption: employee only about $349,317 at 4% or $232,878 at 6%; with 50% employer match about $232,878 at 4% or $155,252 at 6%; with 100% employer match about $174,658 at 4% or $116,439 at 6%.
R William Mason MD PC Profit Sharing Plan-12$811,504$167,672$13,973iApproximate average salary by contribution assumption: employee only about $349,317 at 4% or $232,878 at 6%; with 50% employer match about $232,878 at 4% or $155,252 at 6%; with 100% employer match about $174,658 at 4% or $116,439 at 6%.
2013112$625,034$176,276$14,690iApproximate average salary by contribution assumption: employee only about $367,242 at 4% or $244,828 at 6%; with 50% employer match about $244,828 at 4% or $163,219 at 6%; with 100% employer match about $183,621 at 4% or $122,414 at 6%.
R William Mason MD PC Profit Sharing Plan-12$625,034$176,276$14,690iApproximate average salary by contribution assumption: employee only about $367,242 at 4% or $244,828 at 6%; with 50% employer match about $244,828 at 4% or $163,219 at 6%; with 100% employer match about $183,621 at 4% or $122,414 at 6%.
2012110$1,269,267$153,162$15,316iApproximate average salary by contribution assumption: employee only about $382,905 at 4% or $255,270 at 6%; with 50% employer match about $255,270 at 4% or $170,180 at 6%; with 100% employer match about $191,453 at 4% or $127,635 at 6%.
R William Mason MD PC Profit Sharing Plan-10$1,269,267$153,162$15,316iApproximate average salary by contribution assumption: employee only about $382,905 at 4% or $255,270 at 6%; with 50% employer match about $255,270 at 4% or $170,180 at 6%; with 100% employer match about $191,453 at 4% or $127,635 at 6%.
2011110$1,041,112$1,062,343$106,234iApproximate average salary by contribution assumption: employee only about $2,655,858 at 4% or $1,770,572 at 6%; with 50% employer match about $1,770,572 at 4% or $1,180,381 at 6%; with 100% employer match about $1,327,929 at 4% or $885,286 at 6%.
R William Mason MD PC Profit Sharing Plan-10$1,041,112$1,062,343$106,234iApproximate average salary by contribution assumption: employee only about $2,655,858 at 4% or $1,770,572 at 6%; with 50% employer match about $1,770,572 at 4% or $1,180,381 at 6%; with 100% employer match about $1,327,929 at 4% or $885,286 at 6%.
201016$924,613$49,192$8,199iApproximate average salary by contribution assumption: employee only about $204,967 at 4% or $136,644 at 6%; with 50% employer match about $136,644 at 4% or $91,096 at 6%; with 100% employer match about $102,483 at 4% or $68,322 at 6%.
R William Mason MD PC Profit Sharing Plan-6$924,613$49,192$8,199iApproximate average salary by contribution assumption: employee only about $204,967 at 4% or $136,644 at 6%; with 50% employer match about $136,644 at 4% or $91,096 at 6%; with 100% employer match about $102,483 at 4% or $68,322 at 6%.
200915$829,931$22,500$4,500iApproximate average salary by contribution assumption: employee only about $112,500 at 4% or $75,000 at 6%; with 50% employer match about $75,000 at 4% or $50,000 at 6%; with 100% employer match about $56,250 at 4% or $37,500 at 6%.
R William Mason MD PC Profit Sharing Plan-5$829,931$22,500$4,500iApproximate average salary by contribution assumption: employee only about $112,500 at 4% or $75,000 at 6%; with 50% employer match about $75,000 at 4% or $50,000 at 6%; with 100% employer match about $56,250 at 4% or $37,500 at 6%.
200816$686,280$25,500$4,250iApproximate average salary by contribution assumption: employee only about $106,250 at 4% or $70,833 at 6%; with 50% employer match about $70,833 at 4% or $47,222 at 6%; with 100% employer match about $53,125 at 4% or $35,417 at 6%.
R William Mason MD PC Profit Sharing Plan-6$686,280$25,500$4,250iApproximate average salary by contribution assumption: employee only about $106,250 at 4% or $70,833 at 6%; with 50% employer match about $70,833 at 4% or $47,222 at 6%; with 100% employer match about $53,125 at 4% or $35,417 at 6%.
200716$877,220$25,500$4,250iApproximate average salary by contribution assumption: employee only about $106,250 at 4% or $70,833 at 6%; with 50% employer match about $70,833 at 4% or $47,222 at 6%; with 100% employer match about $53,125 at 4% or $35,417 at 6%.
R William Mason MD PC Profit Sharing Plan-6$877,220$25,500$4,250iApproximate average salary by contribution assumption: employee only about $106,250 at 4% or $70,833 at 6%; with 50% employer match about $70,833 at 4% or $47,222 at 6%; with 100% employer match about $53,125 at 4% or $35,417 at 6%.
200615$743,603$53,000$10,600iApproximate average salary by contribution assumption: employee only about $265,000 at 4% or $176,667 at 6%; with 50% employer match about $176,667 at 4% or $117,778 at 6%; with 100% employer match about $132,500 at 4% or $88,333 at 6%.
R William Mason MD PC Profit Sharing Plan-5$743,603$53,000$10,600iApproximate average salary by contribution assumption: employee only about $265,000 at 4% or $176,667 at 6%; with 50% employer match about $176,667 at 4% or $117,778 at 6%; with 100% employer match about $132,500 at 4% or $88,333 at 6%.
200514$662,746$53,000$13,250iApproximate average salary by contribution assumption: employee only about $331,250 at 4% or $220,833 at 6%; with 50% employer match about $220,833 at 4% or $147,222 at 6%; with 100% employer match about $165,625 at 4% or $110,417 at 6%.
R William Mason MD PC Profit Sharing Plan-4$662,746$53,000$13,250iApproximate average salary by contribution assumption: employee only about $331,250 at 4% or $220,833 at 6%; with 50% employer match about $220,833 at 4% or $147,222 at 6%; with 100% employer match about $165,625 at 4% or $110,417 at 6%.
200413$549,937$48,700$16,233iApproximate average salary by contribution assumption: employee only about $405,833 at 4% or $270,556 at 6%; with 50% employer match about $270,556 at 4% or $180,370 at 6%; with 100% employer match about $202,917 at 4% or $135,278 at 6%.
R William Mason MD PC Profit Sharing Plan-3$549,937$48,700$16,233iApproximate average salary by contribution assumption: employee only about $405,833 at 4% or $270,556 at 6%; with 50% employer match about $270,556 at 4% or $180,370 at 6%; with 100% employer match about $202,917 at 4% or $135,278 at 6%.
200312$494,176$42,872$21,436iApproximate average salary by contribution assumption: employee only about $535,900 at 4% or $357,267 at 6%; with 50% employer match about $357,267 at 4% or $238,178 at 6%; with 100% employer match about $267,950 at 4% or $178,633 at 6%.
R William Mason MD PC Profit Sharing Plan-2$494,176$42,872$21,436iApproximate average salary by contribution assumption: employee only about $535,900 at 4% or $357,267 at 6%; with 50% employer match about $357,267 at 4% or $238,178 at 6%; with 100% employer match about $267,950 at 4% or $178,633 at 6%.
200211$0$0-
R William Mason MD PC Profit Sharing Plan-1---
200111$316,632$24,500$24,500iApproximate average salary by contribution assumption: employee only about $612,500 at 4% or $408,333 at 6%; with 50% employer match about $408,333 at 4% or $272,222 at 6%; with 100% employer match about $306,250 at 4% or $204,167 at 6%.
R William Mason MD PC Profit Sharing Plan-1$316,632$24,500$24,500iApproximate average salary by contribution assumption: employee only about $612,500 at 4% or $408,333 at 6%; with 50% employer match about $408,333 at 4% or $272,222 at 6%; with 100% employer match about $306,250 at 4% or $204,167 at 6%.
200012$0$0-
R William Mason MD PC Profit Sharing Plan-2---
199911$327,193$22,000$22,000iApproximate average salary by contribution assumption: employee only about $550,000 at 4% or $366,667 at 6%; with 50% employer match about $366,667 at 4% or $244,444 at 6%; with 100% employer match about $275,000 at 4% or $183,333 at 6%.
R William Mason MD PC Profit Sharing Plan-1$327,193$22,000$22,000iApproximate average salary by contribution assumption: employee only about $550,000 at 4% or $366,667 at 6%; with 50% employer match about $366,667 at 4% or $244,444 at 6%; with 100% employer match about $275,000 at 4% or $183,333 at 6%.