Top-Rated Nonprofits in Maryland 2026
Maryland has 18 nonprofits with $24.6B in combined revenue. The top-rated organization is Kaiser Foundation Health Plan Of The Mid Atlantic States Inc with an Efficiency Score of 86/100.
Maryland has 18 nonprofits in the IRS Form 990 dataset ranked here by efficiency score. The NonprofitTruth nonprofit efficiency rubric combines financial health / operating reserves (40%), revenue-growth consistency (35%), and officer compensation relative to revenue (25%) into a 0-100 composite.
Reading the ranking: top of the list typically combines healthy operating reserves (the highest-weighted factor) with stable multi-year revenue and reasonable officer compensation. Large hospital and university systems often appear near the top in any state — their scale gives them deep balance sheets and steady revenue. Each nonprofit links to its full Form 990 profile. For donors trying to choose between organizations, the efficiency grade is a useful triage — but the underlying reserve position, the multi-year revenue trend, and the officer-comp ratio matter more than the composite letter on any individual decision.
Top 18 Nonprofits in Maryland
| # | Organization | Category | Revenue | CEO Pay | Score |
|---|---|---|---|---|---|
| 1 | Kaiser Foundation Health Plan Of The Mid Atlantic States Inc | Health | $5.9B | $14K | A (86) |
| 2 | National Marine Sanctuary Foundation | Environment & Animals | $21.6M | $290K | B (77) |
| 3 | The Johns Hopkins Hospital | Health | $3.2B | $218K | B (76) |
| 4 | University Of Maryland Medical System Corporation | Health | $2.2B | $13.8M | B (75) |
| 5 | Hh Medstar Health Inc | Health | $1.9B | $2.5M | B (74) |
| 6 | National Aquarium Inc | Environment & Animals | $55.6M | $2.1M | B (73) |
| 7 | Stevenson University Inc | Education | $158.0M | $2.3M | B (71) |
| 8 | The Humane League | Environment & Animals | $18.5M | $391K | B (70) |
| 9 | Johns Hopkins University | Education | $10.2B | $30.9M | B (69) |
| 10 | Humane World For Animals Inc | Environment & Animals | $175.0M | $3.9M | B (69) |
| 11 | Hood College Of Frederick Md | Education | $86.9M | $1.3M | B (65) |
| 12 | Baltimore Symphony Orchestra Inc | Arts, Culture & Humanities | $26.9M | $0 | C (63) |
| 13 | National Gallery Of Art | Arts, Culture & Humanities | $250.9M | $7.1M | C (54) |
| 14 | The Maryland Zoological Society Inc | Environment & Animals | $21.6M | $518K | C (54) |
| 15 | University Of Maryland College Park Foundation Inc | Education | $176.9M | $0 | C (52) |
| 16 | Montgomery County Green Bank Corp | Environment & Animals | $20.8M | $1.6M | D (48) |
| 17 | Washington College | Education | $94.4M | $1.5M | D (47) |
| 18 | Chesapeake Bay Foundation Inc | Environment & Animals | $32.2M | $1.6M | D (41) |
Nonprofit financial data for Maryland is sourced from IRS Form 990 filings, which all tax-exempt organizations must file annually.
Frequently Asked Questions
Kaiser Foundation Health Plan Of The Mid Atlantic States Inc is the top-rated nonprofit in Maryland with an Efficiency Score of 86/100 (Grade A) and $5.9B in annual revenue.
Maryland has 18 nonprofits in our database with a combined $24.6B in total revenue.
The Efficiency Score (0-100, A-F) measures a nonprofit's financial structure based on financial health / operating reserves (40%), revenue-growth consistency (35%), and current-officer compensation relative to revenue (25%), all from IRS Form 990 data. Higher scores indicate stronger financial structure. It does not include a program-spending ratio, which our data source does not provide.
Efficiency Score: financial health / operating reserves (40%), revenue-growth consistency (35%), current-officer compensation ratio (25%). No program-spending ratio is included — total program service expenses are not available from the ProPublica Nonprofit Explorer feed.