Day One
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.
- Company typePrivate
- Founded1973
- HeadquartersSouth Portland, United States
- Headcount101–250
- GTM typeB2C
- OfferingServices
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.
Day One firmographics
Firmographics- 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
Where Day One is headquartered
LocationHeadquarters
- HQ city
- South Portland
- HQ country
- United States
- HQ region
- North America
Markets served
Day One business model
Business model- GTM type
- B2C
- Offering type
- Services
- Cost components
- Personnel, Operations, Technology or R&D, Marketing or Sales, Infrastructure
Day One product offering
Product offeringCore 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.
Companies that use Day One
Customer profileIdeal customer profiles1 record
Day One technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Day One partnerships and signals
Strategic signalRecent moves2 records
Expansion highlights2 records
Day One competitors and assessment
Company assessmentBroad 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
Day One social profiles
Digital presenceDay One financial estimates
Financial estimateRevenue estimate
Valuation estimate
Day One leadership team
Management profileNumber of profiles
Day One funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Day One M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Day One
What does Day One do?
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.
When was Day One founded?
Day One was founded in 1973. It employs 101 to 250 people.
Where is Day One based?
Day One is headquartered in South Portland, United States, in the North America region.
Who are Day One's main competitors?
Broad incumbents on record are American Addiction Centers, Universal Health Services (Behavioral Health Division) and Acadia Healthcare. Direct peers are BrightView Health, Spectrum Health Systems, Hazelden Betty Ford Foundation, Newport Healthcare and CleanSlate Outpatient Addiction Medicine. Pine Tree Recovery Center is listed as a regional player. Crossroads Treatment Centers is listed as an emerging player.
Does Day One have an API?
No public API is recorded for Day One.