Day One

What Day One does

Day One is a for-profit, privately held behavioral health provider headquartered in South Portland, Maine, operating continuously since its 1973 founding. The organization delivers a multi-modality care portfolio covering substance abuse treatment, mental health services, medication management, residential treatment, and telehealth — combining in-person clinical care with remote delivery channels. Its headcount of 101-250 employees positions it as a mid-sized regional operator within the U.S. behavioral health landscape.

The underlying service model is care-delivery rather than technology-platform: revenue is generated through clinical service provision (likely a mix of commercial insurance reimbursement, Medicaid, and self-pay, though payer mix is undisclosed), with no disclosed pricing model, product packaging, or technology licensing revenue stream. The telehealth component indicates channel diversification, but the source data provides no further detail on platform architecture, electronic health record system, or integration footprint. No funding rounds, acquisitions, partnerships, certifications, or leadership changes are disclosed in the supplied material, and the company's own web property returned only a verification/loading page during data collection, limiting direct first-party insight.

Information gaps are material: ownership structure, revenue figures, geographic footprint beyond Maine, payer concentration, and competitive positioning are all unrepresented in the source data. Any investment assessment must therefore triangulate from the limited firmographic anchors (founding year, headcount band, service-line breadth) and acknowledge significant opacity around financials, technology stack, and strategic intent.

Name

Day One

Website

https://day-one.org

Company type

Private

Founded year

1973

Operating status

Operating

Headcount range

101–250 employees

Short description

Day One is a South Portland, Maine-based for-profit behavioral health provider, founded in 1973, delivering substance abuse and mental health services including medication management, residential treatment, and telehealth to individuals across a multi-modality care portfolio.

Ownership category

akta.pro rank

Headquarters

HQ city

South Portland

HQ country

United States

HQ region

North America

Markets served

GTM type

B2C

Offering type

Services

Cost components

Personnel, Operations, Technology or R&D, Marketing or Sales, Infrastructure

Core offering

Day One provides substance abuse and mental health treatment services to individuals seeking addiction recovery and behavioral healthcare. Its core offerings include residential treatment, medication management, and telehealth-delivered mental health services. The provider operates from South Portland, Maine, and serves clients through both on-site residential programs and remote telehealth visits.

Differentiator

Problem solved

Functional benefit

Products and services

• Substance Abuse Treatment Treatment programs for individuals with substance use disorders, delivered as part of Day One's integrated behavioral health services.
• Mental Health Services Counseling and therapeutic services for individuals with mental health conditions, delivered alongside substance abuse treatment.
• Residential Treatment Supervised, on-site residential recovery program for individuals requiring immersive substance abuse and mental health treatment.
• Medication Management Prescribing, monitoring, and management of medications used in addiction recovery and mental health treatment for individual patients.
• Telehealth Services Remote telehealth-delivered counseling and clinical services for individuals receiving substance abuse or mental health treatment who cannot or prefer not to attend in person.

Ideal customer profiles1 record

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Recent moves2 records

Expansion highlights2 records

Broad incumbents

• American Addiction Centers: American Addiction Centers is a publicly traded operator of residential and outpatient substance abuse treatment facilities nationwide. It is comparable to Day One as a multi-modality addiction treatment provider offering both residential and outpatient programming.
• Universal Health Services (Behavioral Health Division): UHS operates one of the largest behavioral health hospital and residential treatment networks in the U.S. It is comparable to Day One as a scaled provider of psychiatric and substance abuse treatment across residential and outpatient settings.
• Acadia Healthcare: Acadia Healthcare is a large publicly traded operator of behavioral health facilities, including residential treatment and specialty psychiatric programs. It is comparable to Day One as a scaled behavioral health services provider offering residential and outpatient mental health and substance abuse treatment.

Direct peers

• BrightView Health: BrightView Health is a multi-state outpatient addiction treatment provider offering medication-assisted treatment, counseling, and telehealth services. It competes in the same outpatient substance abuse and mental health services category as Day One.
• Spectrum Health Systems: Spectrum Health Systems is a New England–based nonprofit provider of substance abuse and mental health treatment, including residential, outpatient, and medication-assisted treatment. It is a close regional peer to Day One with directly overlapping clinical offerings and geography.
• Hazelden Betty Ford Foundation: Hazelden Betty Ford is a leading nonprofit provider of addiction treatment and mental health services, including residential programs, outpatient care, and telehealth. It directly mirrors Day One's integrated substance abuse and behavioral health service model across the care continuum.
• Newport Healthcare: Newport Healthcare provides residential, outpatient, and virtual mental health treatment for adolescents, young adults, and families. It is comparable to Day One's integrated residential-plus-telehealth behavioral health model and its focus on multi-modality care.
• CleanSlate Outpatient Addiction Medicine: CleanSlate operates outpatient addiction treatment centers focused on medication-assisted treatment for substance use disorders. It is comparable to Day One's medication management component, with overlap in clinical model and target patient population.

Regional players

• Pine Tree Recovery Center: Pine Tree Recovery Center is a Maine-based substance abuse treatment provider offering residential and outpatient programs. It is a direct regional peer to Day One with overlapping service lines and shared local referral channels in the Maine market.

Emerging players

• Crossroads Treatment Centers: Crossroads Treatment Centers operates outpatient addiction treatment clinics across the U.S. with a focus on medication-assisted treatment. It is comparable to Day One's outpatient substance abuse and medication management offering, though with a more distributed and narrower clinical model.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat3 records

Key risks5 records

Key highlights5 records

Customer concentration

• Facebookfacebook.com/Day1Maine

Revenue estimate

Valuation estimate

Number of profiles

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Day One