Hellmuth, Obata & Kassabaum, P.C.
Washington, DC · UEI CK9QSQY8MGN4 · NAICS 541330
Hellmuth, Obata & Kassabaum, P.C. is a federal contractor based in Washington, DC operating in professional, scientific, and technical services (NAICS 541330). Hellmuth, Obata & Kassabaum, P.C. has received $19.19 million across 28 federal contracts. Hellmuth, Obata & Kassabaum, P.C.'s largest customer is Department Of Health And Human Services, accounting for $19.57 million of awarded work.
Top contracts
| PIID | Agency | Latest action | Obligated |
|---|---|---|---|
| SAQMMA10C0303 | Department Of State | September 28, 2022 | $38.80M |
| 75N99024F00006 | Department Of Health And Human Services | September 30, 2025 | $9.25M |
| 19AQMM18F2513 | Department Of State | September 28, 2022 | $8.99M |
| 75N99022F00005 | Department Of Health And Human Services | September 3, 2024 | $3.58M |
| 75N99024F00004 | Department Of Health And Human Services | September 18, 2025 | $3.49M |
| 75N99021F00006 | Department Of Health And Human Services | July 16, 2025 | $3.31M |
| 75N99022F00001 | Department Of Health And Human Services | January 15, 2026 | $2.70M |
| 75N99023F00001 | Department Of Health And Human Services | September 8, 2025 | $2.54M |
| 75N99025F00001 | Department Of Health And Human Services | September 11, 2025 | $1.62M |
| 75N99024F00005 | Department Of Health And Human Services | September 13, 2024 | $1.40M |
Top customers
| Agency | Obligated | Contracts |
|---|---|---|
| Department Of Health And Human Services | $19.57M | 36 |
| Millennium Challenge Corporation | $0 | 1 |
| Department Of State | $-373.0K | 15 |
NAICS portfolio
| NAICS | Description | Obligated |
|---|---|---|
| 541330 | Engineering Services | $19.09M |
| 541310 | Architectural Services | $100.0K |
Track this on BesaGov
Get a free weekly email when this changes — new awards, new sub-awards, new opportunities. No login required.
Continue learning
Keep researching
Frequently asked questions
How much has Hellmuth, Obata & Kassabaum, P.C. received in federal contracts?
Hellmuth, Obata & Kassabaum, P.C. has been awarded $19.19 million across 28 federal contracts. Their largest customer is Department Of Health And Human Services, representing $19.57 million of awarded work.
What does Hellmuth, Obata & Kassabaum, P.C. do?
Hellmuth, Obata & Kassabaum, P.C. is a federal contractor based in Washington, DC, registered under NAICS 541330 (professional, scientific, and technical services).