NAICS 621111: Offices of Physicians (except Mental Health Specialists) — Federal Contracts

What NAICS 621111 covers

The North American Industry Classification System (NAICS) is the standard the federal government uses to classify the industry of every contractor and every procurement. NAICS 621111 identifies businesses primarily engaged in offices of physicians (except mental health specialists). When a contracting officer publishes a solicitation on SAM.gov, they tag it with the NAICS code that best matches the work — which is why getting your NAICS portfolio right inside SAM is the single most important step for showing up in agency searches.

Who buys NAICS 621111?

The federal agencies awarding the most contract value to vendors in this NAICS, based on 9 contractors tracked in the Mindy contractor database:

1. 1Veterans Affairs
2. 2Department Of
3. 3Dept Of The Army
4. 4Office Of The Assistant Secretary For Administration (Asa)
5. 5Centers For Disease Control And Prevention

Source: aggregated from the Mindy contractor database (prime contractor disclosures via SBA + agency directories).

Top contractors in NAICS 621111

The largest prime contractors associated with NAICS 621111, ranked by total reported federal contract value. These are your most likely incumbents — and your most likely teaming partners on recompetes:

1. 1
   Qtc Medical Services INC

   $1.7B total reported value
2. 2
   Optumserve Health Services INC

   $922.2M total reported value
3. 3
   Loyal Source Government Services LLC

   $664.0M total reported value
4. 4
   Veterans Evaluation Services INC

   $591.2M total reported value
5. 5
   Unitedhealth Group Incorporated

   $422.6M total reported value
6. 6
   Dentrust Dental International INC.

   $169.7M total reported value
7. 7
   Acuity-chs LLC

   $38.1M total reported value
8. 8
   Acuity International LLC

   $4.3M total reported value

Values reflect each contractor's aggregate reported federal contract value (across all of their NAICS codes, not just 621111). Use as a ranking signal, not as a per-NAICS award total.