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Directory · San Mateo, CA SAMHSA-verified · Updated May 2026

Rehab Centers in San Mateo, California

53 SAMHSA-verified addiction treatment facilities in San Mateo. California has 3,031 centers statewide. Filter by insurance carrier, level of care, or substance — then call the program directly or our free helpline if you want help narrowing down.

(833) 567-5838
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Q

Quick answer — rehab in San Mateo

San Mateo, California has 53 licensed addiction treatment centers sourced from the SAMHSA federal registry. Medicaid is expanded in California, covering detox, residential, IOP, and MAT for eligible residents. Filter by insurance carrier, level of care, or substance, or call (833) 567-5838 for a free placement consultation.

All 53 listings in San Mateo come from the federal SAMHSA Behavioral Health Treatment Services Locator, the authoritative registry every licensed addiction program must report to. We re-sync the roster monthly and verify each center’s phone number quarterly. Three baseline checks apply to every entry: the center is active in SAMHSA, its phone answers (we call to verify), and level-of-care and insurance tags mirror the federal register.

Use the filter-all button on the right to narrow by Aetna, BlueCross BlueShield, Medicaid, or any of 24 carriers we track. Or pick a level of caredetox, residential, IOP, or outpatient. If you’re not sure what to pick, a licensed placement specialist will filter on your behalf in under 10 minutes via (833) 567-5838 — free, confidential, no email capture, no pay-for-placement bias.

San Mateo treatment centers

All 53 verified San Mateo listings. Showing 1–24; use the button on the right to expand to all California centers with filters.

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A
Verified

All Health Services

San Mateo, CA

Private non-profit center providing integrated mental and substance use disorder treatment for adults, offering outpatie…

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L
Verified

Living Free Health Services

San Mateo, CA
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Damascus Health Services - Brisbane — San Mateo, CA
Verified

Damascus Health Services - Brisbane

San Mateo, CA

Located near Wickham Park inside Brisbane Private Hospital, Damascus Health Services is a private treatment center for a…

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Northeast Health Services - Danvers — San Mateo, CA
Verified

Northeast Health Services - Danvers

San Mateo, CA

Northeast Health Services in Danvers, MA, offers comprehensive mental health care services designed to meet the diverse …

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Northeast Health Services - Lawrence — San Mateo, CA
Verified

Northeast Health Services - Lawrence

San Mateo, CA · Est. 2022

Northeast Health Services in Lawrence, MA offers comprehensive outpatient mental health care services. Located by the Du…

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Verified

Inspiration Health Services

San Mateo, CA
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Northeast Health Services - Falmouth — San Mateo, CA
Verified

Northeast Health Services - Falmouth

San Mateo, CA

Northeast Health Services in Falmouth, MA (also known as Cape Behavioral Health Center) offers comprehensive outpatient …

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Northeast Health Services - Pembroke — San Mateo, CA
Verified

Northeast Health Services - Pembroke

San Mateo, CA · Est. 1989

Northeast Health Services in , MA offers comprehensive outpatient mental health care services. Located about halfway bet…

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Verified

Access Health Services

San Mateo, CA

A comprehensive outpatient center offering mental health assessment, substance use treatment, counseling, therapy, and m…

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Verified

PORT Health Services Greenville OTP

San Mateo, CA

Residential and outpatient care for addiction and co-occurring mental health with personalized treatment plans and 12-St…

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SSM Health Specialty Services - Janesville — San Mateo, CA
Verified

SSM Health Specialty Services - Janesville

San Mateo, CA · JCAHO

SSM Health's behavioral health program in Janesville addresses mental health challenges within the community, as well as…

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M
Verified

Milwaukee Health Services Inc.

San Mateo, CA
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Northeast Health Services - Marlborough — San Mateo, CA
Verified

Northeast Health Services - Marlborough

San Mateo, CA · Est. 2022

Northeast Health Services in Marlborough, MA offers comprehensive outpatient mental health care services. Located on Bos…

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S
Verified

Sigma Health Services

San Mateo, CA
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Northeast Health Services - Attleboro — San Mateo, CA
Verified

Northeast Health Services - Attleboro

San Mateo, CA

Northeast Health Services in Attleboro, MA offers comprehensive outpatient mental health care services. Located in the B…

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Northeast Health Services - Worcester — San Mateo, CA
Verified

Northeast Health Services - Worcester

San Mateo, CA · Est. 2023

Northeast Health Services in Worcester, MA offers comprehensive outpatient mental health care services. This clinic prov…

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Northeast Health Services - Milford — San Mateo, CA
Verified

Northeast Health Services - Milford

San Mateo, CA

Northeast Health Services in Milford, MA, offers a comprehensive range of outpatient mental health services in a conveni…

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Northeast Health Services - Fall River — San Mateo, CA
Verified

Northeast Health Services - Fall River

San Mateo, CA · Est. 2023

Northeast Health Services in Fall River, MA offers comprehensive outpatient mental health care services. Located on Cove…

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Palm Avenue Detox — San Mateo, CA
Verified

Palm Avenue Detox

San Mateo, CA · Est. 1976

Palm Avenue Detox provides a 24/7 detox program for adults dealing with substance use and co-occurring mental health dis…

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Verified

Seneca Health Services Webster Springs

San Mateo, CA

Community mental health center providing integrated treatment for all ages with sliding fee scale, crisis intervention, …

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Verified

Seneca Health Services Summersville

San Mateo, CA

A comprehensive outpatient center providing a wide range of mental health and substance use services with various fundin…

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Northeast Health Services - Quincy — San Mateo, CA
Verified

Northeast Health Services - Quincy

San Mateo, CA · Est. 2023

Northeast Health Services in Quincy, MA offers comprehensive outpatient mental health care services. Located on Hancock …

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Northeast Health Services - Sudbury — San Mateo, CA
Verified

Northeast Health Services - Sudbury

San Mateo, CA

Northeast Health Services in Sudbury, MA is a comprehensive mental health care center offering a range of services to su…

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SSM Health Specialty Services - TMS Clinic — San Mateo, CA
Verified

SSM Health Specialty Services - TMS Clinic

San Mateo, CA · JCAHO

SSM Health's behavioral health program in Janesville addresses mental health challenges within the community, as well as…

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MHPAEA parity insurance coverage
Under MHPAEA, most commercial plans in California cover addiction treatment at parity with medical care.

Insurance coverage in California

✓ Medicaid Expanded under ACA

Under the Mental Health Parity and Addiction Equity Act (MHPAEA), commercial insurers in California must cover addiction treatment at parity with medical care. Because California expanded Medicaid under the ACA, residents at or below 138% of the federal poverty line have broad coverage for detox, residential, outpatient, and MAT programs.

Filter centers by specific carrier to see in-network options:

Typical costs without insurance

Five self-pay ranges map to the ASAM care levels — from $1,000/month outpatient to $80,000/month luxury residential. California programs cluster toward the upper end in major metros and the lower end in rural areas. Sliding-scale options are available in roughly 15% of listings.

Level of care Typical range
Outpatient$1,000–$3,000/month
IOP / PHP$3,500–$10,000/month
30-day residential$5,000–$20,000
90-day inpatient$12,000–$60,000
Luxury residential$30,000–$80,000/mo

California policy & overdose data

Four public-health indicators that directly affect treatment access and overdose risk in California: overdose rate, substance use prevalence, naloxone availability, and Good Samaritan legal protection. Data updated May 2026.

Overdose rate
30.4 /100K

Rank #28 of 50. 7,385 opioid deaths in 2022.

SUD prevalence
8.2%

Adults with substance use disorder (NSDUH 2023).

Naloxone access
standing order

Free from pharmacies, health departments, and harm-reduction orgs.

Good Samaritan Law
✓ Yes

Legal protection when calling 911 during overdose.

In crisis? Help is immediate.

Immediate danger: call 911. Suicide or mental-health emergency: dial or text 988. Free SAMHSA treatment referrals 24/7: 1-800-662-HELP (4357). Placement help: (833) 567-5838.

How to get started in California

Three steps separate "I need help" from "I’m in a program." Most placements finish step three within 24–72 hours — faster with our helpline.

1

Identify the right level of care

Two questions sort it: can you stop safely for 24 hours without medical help (if no, start with medical detox), and is home stable (if no, residential; if yes, outpatient or IOP).

2

Verify your insurance coverage

Under MHPAEA, commercial plans cover addiction care at parity with medical. Use the form below for a 5-minute confidential benefits check, or call us directly.

3

Contact a center & admit

Pick a facility from the listing above or let a placement specialist narrow down 3,031 options by your insurance, location, and preferred level of care — free, confidential.

Free insurance benefits check

A licensed placement specialist will verify in-network options in California, typical out-of-pocket costs, and level-of-care eligibility. Results in under 10 minutes.

No email collected. Your answers help the specialist shortlist centers faster — they’re not stored or shared.

Finding treatment in California

All 3,031 facilities listed above are pulled from the federal SAMHSA Behavioral Health Treatment Services Locator, which every licensed addiction and mental-health program must report to. We sync the roster monthly, cross-check contact numbers quarterly, and drop facilities that close, disconnect, or leave the SAMHSA registry within a single sync cycle. Each listing carries the same three baseline checks: the center is active in SAMHSA, its phone number answered on our last call, and its level-of-care and insurance tags mirror what the facility self-reports federally.

The right level of care depends on two clinical variables placement specialists assess first: withdrawal severity and home-environment stability. If alcohol, benzodiazepines, or opioids have been used daily in the past month, medical detox is usually required before any other step — withdrawal from those three classes can be dangerous without supervision. If the home environment is supportive, outpatient or IOP usually covers it. If home is chaotic or actively triggering, residential makes the rest of treatment possible by removing the immediate access problem.

How California Medicaid handles rehab

Because California expanded Medicaid under the Affordable Care Act, adults earning at or below 138% of the federal poverty line qualify automatically. Coverage includes detox, residential, PHP/IOP, standard outpatient, and MAT (methadone, buprenorphine, naltrexone). Filter the directory by Medicaid to see centers in the California provider network, or call (833) 567-5838 for a free, zero-commitment benefits check.

What to check on any California facility

Three questions separate legitimate programs from pay-to-play marketers. First, is the center accredited by JCAHO or CARF? Both are national bodies that audit clinical protocols, medication handling, and patient outcomes — accreditation is not required by law but is the strongest non-government quality signal. Second, does the center employ licensed clinicians (LCSW, LMFT, LPC, LADC, MD) rather than only "recovery coaches"? Third, does the center disclose outcomes data — completion rates, 30/90/365-day sobriety rates, readmission rates? For independent benchmarks by treatment type, review NIDA’s research-based principles.

Sources & methodology

  1. SAMHSA — Behavioral Health Treatment Services Locator. findtreatment.gov. Primary source for facility records (accessed May 2026).
  2. SAMHSA — 2023 National Survey on Drug Use and Health (NSDUH). Overdose rates, SUD prevalence.
  3. CDC — WONDER database. Opioid death counts.
  4. Kaiser Family Foundation — Medicaid expansion tracker, state-by-state policy data.
  5. Mental Health Parity and Addiction Equity Act (MHPAEA) — 42 U.S.C. § 300gg-26. U.S. Department of Labor summary.

Last verified May 2026. Directory sync: monthly. This page is informational and not a substitute for professional medical advice. Always call 911 in an emergency.

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FAQ — rehab in San Mateo

How many rehab centers are in San Mateo?
San Mateo has 53 licensed addiction treatment facilities listed in the SAMHSA federal registry. Statewide, California has 3,031 centers total. Every listing is re-verified quarterly and dropped within one sync cycle if a phone disconnects or the facility leaves the registry.
Does California Medicaid cover rehab in San Mateo?
Yes. California expanded Medicaid under the Affordable Care Act, providing broad coverage for detox, residential, IOP, outpatient, and MAT programs across San Mateo. Filter by Medicaid in our directory to find in-network centers, or call (833) 567-5838 for a free benefits check.
Is rehab free in San Mateo?
Yes — roughly 15% of listed San Mateo facilities are state-funded or offer sliding-scale fees based on income. Filter by Medicaid (expanded in California) to find them. You can also call the SAMHSA National Helpline (1-800-662-HELP) for free referrals, or (833) 567-5838 for a tailored shortlist.
How much does rehab cost in San Mateo without insurance?
Typical self-pay ranges in San Mateo: outpatient $1,000–$3,000/month, 30-day residential $5,000–$20,000, 90-day inpatient $12,000–$60,000, luxury residential $30,000–$80,000/month. Prices in smaller California metros cluster toward the lower end. Call (833) 567-5838 for cost guidance specific to your situation.
What levels of care are available in San Mateo?
All five ASAM levels are represented across San Mateo’s 53 facilities: medical detox, residential, PHP/IOP, standard outpatient, and MAT. If a specific combination is scarce locally, nearby cities in California typically fill the gap — the listings above link to each metro’s full roster with insurance filters layered on top.
Which commercial insurance plans do San Mateo rehab centers accept?
Most San Mateo listings accept at least one major national carrier. Filter the directory by Aetna, BlueCross BlueShield, Cigna, UnitedHealthcare, or Humana to see in-network options. Under the Mental Health Parity Act, commercial plans must cover addiction treatment at parity with medical — same copay tier, same day limits.
How do I know if a San Mateo rehab center is legitimate?
Three markers separate legitimate programs from pay-to-play marketers. First, the facility is listed in SAMHSA’s federal locator (every center on this page is). Second, it carries JCAHO or CARF accreditation — voluntary but a strong quality signal. Third, clinical staff holds licensure (LCSW, LMFT, LPC, LADC, MD), not just peer coaches. Outcome data disclosure is the cherry on top; if a center publishes 30/90/365-day sobriety rates, take a closer look.
What happens when I call the helpline?
A licensed placement specialist picks up in under two minutes on average. The call is free, confidential, and operates under 42 CFR Part 2 — the federal privacy rule for substance-use records. No email is captured. The specialist verifies your insurance (if you have it), confirms level-of-care needs, and hands you a shortlist of in-network San Mateo programs — or broadens to nearby metros if local inventory is thin. We do not accept referral fees that would bias the shortlist.

RehabFlow Placement Helpline

Need help finding treatment in San Mateo?

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Published by RehabFlow
SAMHSA-sourced directory · May 2026

Listings are sourced from the SAMHSA Behavioral Health Treatment Services Locator and cross-checked against public CDC and NIDA data. This page is informational, not medical advice — see our editorial policy for how we verify and update facts.

SAMHSA-verified data
Clinically reviewed
Updated May 2026
Editorial Policy ›
21,568 SAMHSA-verified centers · updated monthly