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HELLMUTH, OBATA & KASSABAUM, P.C.

HELLMUTH, OBATA & KASSABAUM, P.C. is a federal contractor registered under UEI CK9QSQY8MGN4 and CAGE code 0MY56. The organization has received $181,957,711 across 188 federal awards, with top agencies including Department of Health and Human Services, Department of State, Smithsonian Institution, Department of Defense, and General Services Administration. Its primary NAICS code is 541310.

UEI CK9QSQY8MGN4 CAGE 0MY56 Primary NAICS 541310
Total obligations
$182M
Awards
188

Federal contractor overview

HELLMUTH, OBATA & KASSABAUM, P.C. is registered as a federal contractor under UEI CK9QSQY8MGN4 and CAGE 0MY56, and is located in WASHINGTON, DC, USA. Federal award data shows $181,957,711 across 188 federal awards, with top agencies including Department of Health and Human Services, Department of State, Smithsonian Institution, Department of Defense, and General Services Administration. The contractor's primary NAICS classification is 541310, and its public business classifications include For Profit Organization. Its organization hierarchy includes HOK GROUP, INC. and HOK GROUP, INC.

Contractor identifiers

Legal business name
HELLMUTH, OBATA & KASSABAUM, P.C.
DBA name
HOK
Unique Entity ID
CK9QSQY8MGN4
CAGE code
0MY56
Location
WASHINGTON, DC, USA

NAICS codes and business types

NAICS codes

Business and socioeconomic classifications

  • For Profit Organization

Organization hierarchy

Federal obligation history

Total federal obligations

$181,957,711

Awards
188

Top agencies by obligations

  1. Department of Health and Human Services

    91 award actions

    $88,575,769
  2. Department of State

    4 award actions

    $45,965,199

  3. Smithsonian Institution

    3 award actions

    $13,237,000
  4. Department of Defense

    2 award actions

    $7,283,235
  5. General Services Administration

    1 award action

    $5,115,000

Federal obligations by fiscal year

Net federal contract obligations decreased from $13,423,503 in FY2024 to $6,057,090 in FY2025.

Federal obligations and award actions by fiscal year Blue bars show net federal obligations. The green line shows award-action counts. The lighter final bar and FY YTD label identify current fiscal-year-to-date activity.

Scroll horizontally to view all fiscal years.

View fiscal-year data table
Completed and current year-to-date federal fiscal-year contract activity
Fiscal year Net obligations Award actions
FY2026 YTD $2,012,105 22
FY2025 $6,057,090 23
FY2024 $13,423,503 35
FY2023 $4,870,307 29
FY2022 $6,480,970 23
FY2021 $7,316,873 30

Recent federal awards

  1. C201958-TWO CONDENSER WATER PUMPS WERE INSTALLED APPROXIMATELY THREE YEARS AGO ON AN ELEVATED, STRUCTURAL STEEL PLATFORM WHICH HAS EXPERIENCED EXCESSIVE VIBRATION AND WE NEED TO DO DESIGN STUDY TO FIND THE CAUSE OF VIBRATION

    Department of Health and Human Services

    $47,711

    Obligated

    PIID 75N99026F00004

    Awarded Jul 30, 2026

  2. C104607 - COMMISSIONING SERVICES, BLDG 15B, ZAIRA JIMENEZ

    Department of Health and Human Services

    $35,853

    Obligated

    PIID 75N99026F00003

    Awarded Jul 20, 2026

  3. C200710 BLDG 8/8A REHEAT REPLACEMENT PHASE 02 CQM|!#^|!#^KTR: AARON ALTMAN|!#^COR: JULIANNA SAVIOLA|!#^CS: TAI NGO|!#^CO: THUY LE

    Department of Health and Human Services

    $868,939

    Obligated

    PIID 75N99026F00002

    Awarded Apr 23, 2026

  4. C201593 CQM SERVICES FOR CUP LEAK REPAIR AT 36 IN. CHW PIPING, BLDG 11, WAYNE SMALLS

    Department of Health and Human Services

    $23,013

    Obligated

    PIID 75N98026F00001

    Awarded Mar 25, 2026

Top federal contract markets

See the leading federal contract markets for HELLMUTH, OBATA & KASSABAUM, P.C. by agency and work category, ranked by positive obligations in Sweetspot's federal market coverage during the last 12 months.

Coverage period Aug 14, 2025–Aug 13, 2026

Federal contract vehicles

Frequently asked questions

What is HELLMUTH, OBATA & KASSABAUM, P.C.'s Unique Entity ID (UEI)?
HELLMUTH, OBATA & KASSABAUM, P.C.'s Unique Entity ID is CK9QSQY8MGN4, as registered in SAM.gov.
What is HELLMUTH, OBATA & KASSABAUM, P.C.'s CAGE code?
HELLMUTH, OBATA & KASSABAUM, P.C.'s CAGE code is 0MY56.
What is HELLMUTH, OBATA & KASSABAUM, P.C.'s primary NAICS code?
HELLMUTH, OBATA & KASSABAUM, P.C.'s primary NAICS classification is 541310.
Where is HELLMUTH, OBATA & KASSABAUM, P.C. located?
HELLMUTH, OBATA & KASSABAUM, P.C. is located in WASHINGTON, DC, USA.
How much has HELLMUTH, OBATA & KASSABAUM, P.C. received in federal contract obligations?
HELLMUTH, OBATA & KASSABAUM, P.C. has received $181,957,711 in federal contract obligations across 188 federal awards.
Which federal agencies has HELLMUTH, OBATA & KASSABAUM, P.C. worked with?
HELLMUTH, OBATA & KASSABAUM, P.C.'s top federal agencies include Department of Health and Human Services, Department of State, Smithsonian Institution, Department of Defense, and General Services Administration.
When was HELLMUTH, OBATA & KASSABAUM, P.C. registered in SAM.gov?
HELLMUTH, OBATA & KASSABAUM, P.C.'s SAM.gov registration date is September 19, 2001.
What business classifications does HELLMUTH, OBATA & KASSABAUM, P.C. hold?
HELLMUTH, OBATA & KASSABAUM, P.C.'s registered business and socioeconomic classifications include For Profit Organization.