NAICS 621493: Freestanding Ambulatory Surgical and Emergency Centers
This U.S. industry comprises establishments with physicians and other medical staff primarily engaged in (1) providing surgical services (e.g., orthoscopic and cataract surgery) on an outpatient basis or (2) providing emergency care services (e.g., setting broken bones, treating lacerations, or tending to patients suffering injuries as a result of accidents, trauma, or medical conditions necessitating immediate medical care) on an outpatient basis. Outpatient surgical establishments have specialized facilities, such as operating and recovery rooms, and specialized equipment, such as anesthetic or X-ray equipment. Illustrative Examples: Freestanding ambulatory surgical centers and clinics Freestanding emergency medical centers and clinics Freestanding trauma centers (except hospitals) Urgent medical care centers and clinics (except hospitals) Cross-References.Show more
NAICS 621493 – Freestanding Ambulatory Surgical and Emergency Centers covers outpatient healthcare facilities that provide surgical, diagnostic, and emergency services without requiring overnight hospitalization. These centers deliver time-sensitive, high-acuity care including minor and moderate surgical procedures, trauma stabilization, and urgent diagnostic interventions under state-licensed, Medicare-certified operational frameworks.
Industry Spending Overview
Federal obligations, top contractors and agencies, and related industry codes for NAICS 621493.
AI Industry Description
NAICS 621493 – Freestanding Ambulatory Surgical and Emergency Centers covers outpatient healthcare facilities that provide surgical, diagnostic, and emergency services without requiring overnight hospitalization. These centers deliver time-sensitive, high-acuity care including minor and moderate sur...
NAICS 621493 – Freestanding Ambulatory Surgical and Emergency Centers covers outpatient healthcare facilities that provide surgical, diagnostic, and emergency services without requiring overnight hospitalization. These centers deliver time-sensitive, high-acuity care including minor and moderate surgical procedures, trauma stabilization, and urgent diagnostic interventions under state-licensed, Medicare-certified operational frameworks. In government contracting, this NAICS supports mission-critical healthcare delivery for active-duty personnel, veterans, and federal beneficiaries through contracts with military treatment facilities, VA networks, and public health emergency response systems. These centers operate under strict regulatory compliance, including OSHA, CMS, and Joint Commission standards, and often integrate with electronic health record systems and telehealth platforms to ensure continuity of care. No contractor data is available to identify leading primes or small businesses in this sector. However, contractors typically include specialized healthcare service providers, outpatient facility operators, and healthcare management organizations with experience in federal compliance, credentialing, and rapid-response care delivery models. No agency data is available to identify primary buyers. Nonetheless, demand is likely driven by the Department of Defense through TRICARE network expansion, the Department of Veterans Affairs for community-based outpatient care initiatives, and the Department of Health and Human Services for public health emergency preparedness programs. The competitive landscape is characterized by high regulatory barriers and localized service requirements, limiting the number of qualified contractors. Opportunities exist for firms with proven experience in ambulatory surgical center operations, federal accreditation, and integrated care coordination. Growing emphasis on decentralized healthcare delivery and post-acute care efficiency is increasing demand for accredited, scalable freestanding centers capable of supporting military and veteran populations in underserved regions.
Small Business Size Standard
The SBA threshold that decides who can bid NAICS 621493 work as a small business.
The SBA cap for this NAICS (13 CFR 121.201). A business at or under it can self-certify as small for work in this code, which is what makes it eligible for a small-business set-aside. The cap is set per NAICS, so the same company can be small in one code and not in another.
13 CFR 121.201, effective January 1, 2026. The SBA revises the table roughly once a year.
Top Contractors
Companies with the highest total award value under NAICS 621493, ranked by dollars won.
| Company | Total Awards | Contracts |
|---|---|---|
| CHENEGA GOVERNMENT MISSION SOLUTIONS, LLC | $5.6M | 1 |
| BANNER PHOENIX SURGERY CENTER, LLC | $1.8M | 1 |
| LOWCOUNTRY SURGERY CENTER, LLC | $1.5M | 1 |
| WOLF LAKE SERVICES, LLC | $310K | 4 |
| DIOCESAN COUNCIL FOR THE SOCIETY OF ST VINCENT DE PAUL DIOCESE PHOENIX | $138K | 1 |
| ADVANCED LASER SERVICES, LLC | $27K | 1 |
Top Agencies
Federal agencies directing the most contract spending toward NAICS 621493.
Competition
How many companies historically bid on federal awards in NAICS 621493, from bidder counts reported on USAspending.
Half or more of reported awards drew exactly one bidder, usually a sign of incumbent-held work rather than an open field. · 809 reported awards
Median Bidders
1
Per reported award, all-time
Single-Bid Awards
77%
Share of reported awards with one bidder
10+ Bidder Awards
1%
Share of reported awards with 10+ bidders
Reported Awards
60% of 1,338 total awards
Share of reported awards in each bidder-count bracket per federal fiscal year.
How this code compares up the NAICS hierarchy. Parent cohorts pool every code under their prefix, so they are the steadier baseline when a 6-digit sample is thin.
| Industry Family | Competition | Median Bidders | Single-Bid | Bidder Mix | Reported Awards |
|---|---|---|---|---|---|
621493This Code Freestanding Ambulatory Surgical and Emergency Centers | Usually Single-Bid | 1 | 77% | 80960% of 1,338 | |
62149NAICS Industry | Usually Single-Bid | 1 | 69% | 9,77876% of 12,827 | |
6214Industry Group Outpatient Care Centers | Usually Single-Bid | 1 | 52% | 29,50784% of 35,330 | |
621Subsector | Usually Single-Bid | 1 | 65% | 305,49284% of 362,305 | |
62Sector Health Care and Social Assistance | Usually Single-Bid | 1 | 71% | 550,70684% of 657,924 |
Bidder counts reported on past federal awards in this NAICS (USAspending). An open opportunity has no bidders yet, so this is the historical norm for similar work, not a fact about this solicitation. Not all awards report bidder counts, and fewer bidders often means incumbent-held work rather than an easier win. Federal reporting of bidder counts fell from ~96% of awards (FY2016) to ~30% (FY2018 onward); the chart shows shares of reported awards, and washed-out stretches mark years with fewer than 30 of them.
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