The Siadat Family Foundation concentrates its philanthropy on health care, primarily through large, repeat gifts to a single hospital foundation, while also providing smaller support to performing arts organizations (notably ballet). Most funding is directed to a major medical center in South Florida, with occasional discretionary gifts to cultural institutions. This pattern suggests a priority on local health services complemented by an interest in supporting the arts.
Highly concentrated: a small number of large grants (majority of dollars to one core grantee via repeated payments) plus a few modest arts gifts; favors repeat, high-dollar support to a flagship health institution rather than broad, diversified giving.
Notable grantees: Mount Sinai Medical Center Foundation, Ballet Theatre Foundation Inc, Ballet Theatre Foundation (alternate listing)
Siadat Family Foundation’s recent giving is anchored by a $1.6 million general-support grant to Mount Sinai Medical Center Foundation in Miami Beach, a relationship that also includes multiple additional seven-figure and half-million-dollar gifts. That pattern points to a funder that uses large unrestricted awards to support organizational stability rather than narrow project funding. Beyond health care, the foundation has made sizable general-support grants to Ballet Theatre Foundation Inc. in New York and smaller support to Saint Andrews School in Boca Raton. The mix shows a narrow set of recipients rather than a broad portfolio, with one medical institution receiving the dominant share of support and a smaller stream going to education and performing arts. The foundation’s most recent grants also show continuity over time: Mount Sinai Medical Center Foundation appears in several consecutive years, with awards ranging from $500,000 to $1,600,000. That repeat pattern, along with the general-support language used across grants, suggests a preference for flexible funding to established institutions.
Health care is the clearest focus. In 2025, the foundation gave $1.6 million to Mount Sinai Medical Center Foundation for general support, following $1 million in 2023 and $500,000 grants in both 2023 and 2024. Performing arts also appears in the recent record: Ballet Theatre Foundation Inc. received $206,000 in 2023 and $106,000 in 2024, both for general support. Education is a smaller line of giving, represented by Saint Andrews School in Boca Raton, which received $50,000 in 2024 and two grants in 2023 of $30,000 and $20,000, all listed as general support. Across these areas, the foundation’s grants are framed as unrestricted support rather than project-specific funding.
Typical grant size is substantial: the 25th percentile is $45,000, the median is $156,000, and the 75th percentile is $500,000. Recent awards range from smaller five-figure gifts to repeated half-million-dollar and seven-figure grants, which indicates a wide spread around a relatively high center. The recent record also shows repeat support to the same recipients across multiple years, especially in health care and the arts. The foundation appears to operate as a family foundation and does not fund individuals or make program-related investments.
$4M
$16.3M
$833K
$1.7M
Most grants fall between $45K and $500K, with a median of $156K.
25th Percentile
$45K
Median
$156K
75th Percentile
$500K
About 75% of grants go to recipients in NY.
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Giving is regional, and most grants go to recipients in Florida: 75% of grants were made to organizations in the HQ state. Miami Beach appears repeatedly through Mount Sinai Medical Center Foundation, while Boca Raton shows up through Saint Andrews School. New York is the top state by grant count outside Florida, with Ballet Theatre Foundation Inc. in New York City among the recent recipients. All recent grants in the dataset were made to U.S. organizations.
The recent grant record centers on health care, especially Mount Sinai Medical Center Foundation, and also includes performing arts and education. Health care receives the largest awards, while Ballet Theatre Foundation Inc. and Saint Andrews School show support for ballet and school-based general support.
The grant-size distribution is relatively high: p25 is $45,000, the median is $156,000, and p75 is $500,000. Recent grants include smaller five-figure awards as well as repeated half-million-dollar and seven-figure gifts.
Yes. Mount Sinai Medical Center Foundation appears in multiple consecutive years with awards of $1.6 million in 2025, $500,000 in 2024, and $1 million and $500,000 in 2023. Ballet Theatre Foundation Inc. and Saint Andrews School also each received more than one grant in the recent record.
Florida is the main recipient state by volume, with 75% of grants going to organizations in the HQ state. Miami Beach and Boca Raton are both represented in the recent grants list, and New York is the top state by grant count outside Florida.
2025
Source: IRS Form 990-PF, fiscal year 2025.
Most recent grants reported to the IRS.
| Recipient | Location | Amount | Year | Purpose |
|---|---|---|---|---|
| MOUNT SINAI MEDICAL CENTER FOUNDATION | MIAMI BEACH, FL | $1,600,000 | 2025 | GENERAL SUPPORT |
| Mount Sinai Medical Center Foundation | MIAMI BEACH, FL | $500,000 | 2024 | general support |
| Ballet Theatre Foundation Inc | NEW YORK, NY | $106,000 | 2024 | General support |
| Saint Andrews School | BOCA RATON, FL | $50,000 | 2024 | general support |
| Mount Sinai Medical Center Foundation | Miami Beach, FL | $1,000,000 | 2023 | General Support |
| Mount Sinai Medical Center Foundation | Miami Beach, FL | $500,000 | 2023 | general support |
| Ballet Theatre Foundation In | new york, NY | $206,000 | 2023 | General Support |
| St Andrews School | Boca Raton, FL | $30,000 | 2023 | General Support |
| St Andrews School | Boca Raton, FL | $20,000 | 2023 | General Support |
MOUNT SINAI MEDICAL CENTER FOUNDATION
$1,600,000GENERAL SUPPORT
Mount Sinai Medical Center Foundation
$500,000general support
Ballet Theatre Foundation Inc
$106,000General support
Saint Andrews School
$50,000general support
Mount Sinai Medical Center Foundation
$1,000,000General Support
Mount Sinai Medical Center Foundation
$500,000general support
Ballet Theatre Foundation In
$206,000General Support
St Andrews School
$30,000General Support
St Andrews School
$20,000General Support