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    621112 - Offices of Physicians, Mental Health Specialists

    When it comes to specialized mental health services, NAICS code 621112 stands out as the key classification for professionals dedicated to diagnosing, treating, and counseling mental health disorders. Whether you are a healthcare provider, entrepreneur, or government contractor, understanding this code is essential for navigating regulations, securing contracts, and growing your business in the mental health sector.

    What is NAICS Code 621112?

    The North American Industry Classification System (NAICS) code 621112 represents Offices of Physicians, Mental Health Specialists. This industry comprises establishments where health practitioners with M.D. (Doctor of Medicine) or D.O. (Doctor of Osteopathy) degrees independently practice psychiatry or other mental health specialties.

    These offices provide vital services including:

    • Diagnosis of mental health disorders
    • Treatment and medication management
    • Counseling and psychotherapy sessions

    Sector: Health Care and Social Assistance

    NAICS 621112 falls under the broad Health Care and Social Assistance sector, which encompasses a range of medical and social services aimed at improving the well-being of individuals and communities.

    Typical Business Activities Within NAICS 621112

    Businesses classified under this code generally include:

    • Independent psychiatry clinics and centers
    • Mental health counseling offices operated by licensed medical doctors
    • Private practices focusing on mental health specialties
    • Psychiatrists' and psychoanalysts' offices (MDs or DOs)
    • Pediatricians specializing in mental health
    • Psychotherapist offices operated by medical doctors or osteopathic physicians

    Size Standard for NAICS Code 621112

    For small business eligibility and contracting purposes, the size standard associated with NAICS 621112 is $13.5 million in average annual receipts. This standard helps determine whether businesses qualify for small business set-asides and related programs.

    Examples of Businesses Under NAICS 621112

    Here are some examples of typical businesses you might find under this classification:

    • Psychiatry clinics providing outpatient mental health services
    • Mental health counseling centers led by licensed physicians
    • Private psychologist practices supervised by M.D. or D.O. specialists
    • Psychoanalytical therapy offices holding MD or DO credentials

    Detailed Code Information

    NAICS Code Title Description Common Terms and Keywords
    621112 Offices of Physicians, Mental Health Specialists Establishments primarily engaged in independent practice of psychiatry or other mental health specialties by MDs or DOs. Doctors of osteopathic medicine (DOs), mental health offices (centers, clinics), Medical doctors (MDs), Psychiatry clinics, Psychiatrists’ offices, Psychoanalysts’ offices, Psychotherapists’ offices, Pediatricians’ mental health offices, Physicians' mental health offices

    FAQ: NAICS Code 621112

    Q1: What types of practitioners are included under NAICS 621112?

    A: The code covers physicians with M.D. or D.O. degrees specializing in psychiatry and other mental health fields.

    Q2: Does NAICS 621112 include psychologists?

    A: This code is specific to physicians (MDs and DOs); licensed psychologists typically fall under different NAICS codes, unless they are medical doctors practicing psychiatry.

    Q3: What is the size standard for a small business under this code?

    A: The size standard is $13.5 million in average annual receipts.

    Q4: Can pediatricians be classified under NAICS 621112 if they provide mental health services?

    A: Yes, pediatricians with a focus on mental health in their practices fall under this classification.

    Q5: What types of services do offices under NAICS 621112 provide?

    A: These offices provide diagnosis, treatment, counseling, psychotherapy, and medication management for mental health disorders.


    Optimizing your business or government contracting efforts begins with correctly identifying your industry's NAICS classifications. NAICS 621112 plays a critical role in defining the healthcare landscape for mental health specialists and physicians. Whether you operate a small psychiatry clinic or a specialized counseling center, understanding this code will help you align your operations with industry standards and unlock new opportunities.