NAICS Code 621112: Offices of Physicians, Mental Health Specialists
National industry
SBA small business size standard: $13.5 million in average annual receipts
Definition
This U.S. industry comprises establishments of health practitioners having the degree of M.D. (Doctor of Medicine) or D.O. (Doctor of Osteopathic Medicine) primarily engaged in the independent practice of psychiatry or psychoanalysis. These practitioners operate private or group practices in their own offices (e.g., centers, clinics) or in the facilities of others, such as hospitals or HMO medical centers.
Government contracts for this service: PSC Q999 Other Medical Services and PSC Q201 Managed Healthcare Services
Code facts
- Part of
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62
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621
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6211
- 62111
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6211
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621
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62
- Contract awards
- 277 In the last 12 months
- Contract obligations
- $125,689,293 In FY2025
NAICS codes and definitions come from the U.S. Census Bureau, size standards from the SBA and contract spending from SAM.gov/FPDS.
Business activities under NAICS 621112
- Doctors of osteopathy (DOs), mental health, offices (e.g., centers, clinics)
- DOs' (doctors of osteopathy), mental health, offices (e.g., centers, clinics)
- MDs' (medical doctors), mental health, offices (e.g., centers, clinics)
- Medical doctors' (MDs), mental health, offices (e.g. centers, clinics)
- Mental health physicians' offices (e.g., centers, clinics)
- Pediatricians', mental health, offices (e.g., centers, clinics)
- Physicians', mental health, offices (e.g., centers, clinics)
- Psychiatrists' offices (e.g., centers, clinics)
- Psychoanalysts' (MDs or DOs) offices (e.g., centers, clinics)
- Psychotherapists' (MDs or DOs) offices (e.g., centers, clinics)
Looking for another activity? Search the NAICS code lookup or browse business activities from A to Z.
Contract obligations by fiscal year
| Fiscal year | Obligated |
|---|---|
| FY2027 To date | -$1,017,663 |
| FY2026 | $108,966,713 |
| FY2025 | $125,689,293 |
| FY2024 | $233,129,919 |
| FY2023 | $267,270,862 |
Top contractors by obligations
| Rank | Contractor | Obligated, FY2026–FY2027 | Share |
|---|---|---|---|
| 1 | QTC Medical Services Inc. | $31,488,379 | |
| 2 | Optumserve Health Services, Inc. | $11,000,000 | |
| 3 | Sterling Medical Associates, Inc. | $8,547,750 | |
| 4 | Indian Health Care Resource Center Of Tulsa, Inc. | $4,921,053 | |
| 5 | Magnum Medical Overseas JV LLC | $4,602,589 | |
| 6 | Texas Native Health | $2,991,404 | |
| 7 | Native American Health Center, Inc. | $2,286,898 | |
| 8 | Hunter Health Clinic Inc. | $2,097,994 | |
| 9 | Tribal TECH LLC | $1,990,602 | |
| 10 | Sacramento Native American Health Center Inc. | $1,720,617 |
See the full FY2025 ranking of NAICS 621112 contractors, by parent company.
Top funding agencies by obligations
| Rank | Agency | Obligated, FY2026–FY2027 | Share |
|---|---|---|---|
| 1 | Defense Health Agency | $47,055,886 | |
| 2 | Social Security Administration | $28,366,454 | |
| 3 | Department of Health and Human Services | $16,418,690 | |
| 4 | Department of the Navy | $5,190,988 | |
| 5 | Air Force | $4,169,973 | |
| 6 | Department of the Interior | $2,072,930 | |
| 7 | Department of Veterans Affairs | $2,048,633 | |
| 8 | Department of Energy | $1,527,240 | |
| 9 | Department of Justice | $1,280,816 | |
| 10 | Department of Transportation | $1,255,603 |
Top PSC codes by obligations
| Rank | PSC code | Obligated, FY2026–FY2027 | Share |
|---|---|---|---|
| 1 | Q999 Other Medical Services | $37,740,025 | |
| 2 | Q201 Medical – Managed Healthcare | $34,733,172 | |
| 3 | Q519 Behavioral and Mental Health | $15,010,031 | |
| 4 | M1DB Operation of Laboratories and Clinics | $10,769,036 | |
| 5 | Q516 Pediatric Services | $4,602,589 | |
| 6 | Q701 Specialized Medical Support | $1,527,240 | |
| 7 | Q518 Physical Medicine and Rehabilitation Services | $1,135,015 | |
| 8 | Q702 Technical Medical Support | $938,588 | |
| 9 | U099 Other Education and Training Services | $585,399 | |
| 10 | R424 Expert Witness | $531,572 |
Contract obligations by state
| Rank | Place of performance | Obligated, last 12 months | Share |
|---|---|---|---|
| 1 | Virginia | $37,039,368 | |
| 2 | Wisconsin | $11,000,000 | |
| 3 | California | $10,015,258 | |
| 4 | Texas | $4,032,280 | |
| 5 | Maryland | $2,985,665 | |
| 6 | Georgia | $2,947,639 | |
| 7 | Oklahoma | $2,237,272 | |
| 8 | Illinois | $2,015,683 | |
| 9 | Arizona | $1,944,550 | |
| 10 | Pennsylvania | $1,858,093 | |
| 11 | New Mexico | $1,770,010 | |
| 12 | Kansas | $1,481,475 | |
| 13 | Colorado | $1,320,105 | |
| 14 | Massachusetts | $1,106,970 | |
| 15 | New Jersey | $869,714 | |
| 16 | Oregon | $823,476 | |
| 17 | Iowa | $600,406 | |
| 18 | Alabama | $589,344 | |
| 19 | Indiana | $566,450 | |
| 20 | New York | $534,514 | |
| 21 | Puerto Rico | $524,608 | |
| 22 | Missouri | $444,488 | |
| 23 | Arkansas | $346,020 | |
| 24 | Kentucky | $280,580 | |
| 25 | Montana | $200,828 | |
| 26 | South Dakota | $132,000 | |
| 27 | Florida | $118,158 | |
| 28 | Ohio | $79,420 | |
| 29 | Utah | $18,600 | |
| 30 | Nevada | $13,400 | |
| 31 | Wyoming | $10,830 | |
| 32 | Washington | $3,000 |
Show all 32
Shares are of everything obligated under NAICS 621112 in the last 12 months before deobligations, including work performed abroad or with no place of performance on record.
Contract opportunities
Show 40 more
Latest 50 of 1,136 listed here. See the rest on GovTribe.
Size standard history
Federal Register rules that named this code
From the NAICS codes each rule's amendments to 13 CFR 121.201 name. Rules that print their size standard tables as images aren't listed.
Quick answers
What is NAICS 621112?
NAICS 621112 is Offices of Physicians, Mental Health Specialists, a national industry in NAICS 62, Health Care and Social Assistance.
What is the NAICS code for psychiatrists' offices (e.g., centers, clinics)?
The NAICS code for psychiatrists' offices (e.g., centers, clinics) is 621112, Offices of Physicians, Mental Health Specialists.
What is the NAICS code for mental health physicians' offices (e.g., centers, clinics)?
The NAICS code for mental health physicians' offices (e.g., centers, clinics) is 621112, Offices of Physicians, Mental Health Specialists.
What is the NAICS code for physicians', mental health, offices (e.g., centers, clinics)?
The NAICS code for physicians', mental health, offices (e.g., centers, clinics) is 621112, Offices of Physicians, Mental Health Specialists.
When did the size standard for NAICS 621112 last change?
The most recent Federal Register rule on record that names NAICS 621112 in the SBA's size standards is "Small Business Size Standards: Adjustment of Monetary-Based Size Standards, Disadvantage Thresholds, and 8(a) Eligibility Thresholds for Inflation" (87 FR 69118), published Nov 17, 2022 and effective Dec 19, 2022.
How much do federal agencies spend under NAICS 621112?
Federal contracts under NAICS 621112 obligated $125,689,293 in fiscal year 2025 and $734,039,123 in fiscal years 2023 through 2027.
Who are the largest contractors under NAICS 621112?
The contractors with the most obligated under NAICS 621112 in fiscal years 2026 and 2027 are QTC Medical Services Inc. ($31,488,379); Optumserve Health Services, Inc. ($11,000,000); and Sterling Medical Associates, Inc. ($8,547,750).
Which agencies buy the most under NAICS 621112?
The agencies that obligated the most under NAICS 621112 in fiscal years 2026 and 2027 are Defense Health Agency ($47,055,886), Social Security Administration ($28,366,454) and Department of Health and Human Services ($16,418,690).
Which PSC codes are used with NAICS 621112?
The PSC codes with the most obligated under NAICS 621112 in fiscal years 2026 and 2027 are Q999 Other Medical Services, Q201 Medical – Managed Healthcare and Q519 Behavioral and Mental Health.
Where is the work under NAICS 621112 performed?
By place of performance, the states with the most contract obligations under NAICS 621112 over the last 12 months are Virginia ($37,039,368), Wisconsin ($11,000,000) and California ($10,015,258).
What is the latest contract opportunity under NAICS 621112?
The latest contract opportunity under NAICS 621112 is ISBEE Solicitation: 24/
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