MedMark Treatment Centers – Hayward

795 Fletcher Lane, Hayward, California, 94544

Accepts Insurance

4.3★★★★☆22 total reviews

TREATS

Substance use disorder
Mental health

LEVELS OF CARE

Detox · Outpatient

INSURANCE

Accepts insurance

Medicare · TRICARE

Also accepts private pay

Private
Facility type
3
levels of care
CARF
Accredited by
Alameda County
County
Yes
Telehealth offered

About MedMark Treatment Centers – Hayward

The facility sits on Fletcher Lane in Hayward, an East Bay city between Oakland and Fremont. The facility offers addiction detox, alcohol withdrawal management, drug withdrawal management and medically supervised detox. Care is provided on an outpatient basis, so people continue living at home. Accreditation is held with CARF, Federal Opioid Treatment Program Certification and DEA.

Treatment addresses substance use alongside co-occurring mental health conditions, including post-traumatic stress disorder (PTSD) and trauma and stressor-related disorders. Substances treated include alcohol, illicit drugs and prescription drugs. Programs are available for men, pregnant women and women. Spanish is spoken at this location.

Key Facility Details

  • Federal Registration: Listed in the federal treatment register, the national inventory of licensed treatment facilities.
  • State Licensing: Licensed by the California Department of Health Care Services. DHCS licensure is a legal requirement for behavioral health facilities operating in California.
  • Accreditation: CARF, Federal Opioid Treatment Program Certification, DEA and State substance use agency license
  • Levels of Care: Addiction Detox, Alcohol Withdrawal Management, Drug Withdrawal Management, Medically Supervised Detox, Medication-Assisted Treatment (MAT) and Outpatient Services (OP)
  • Primary Focus: Alcohol, Illicit Drugs and Post-Traumatic Stress Disorder (PTSD)
  • Location: Hayward, California
  • Phone: 214-379-3300

Key Facility Details

Levels of care
Detox, Outpatient, Telehealth, Aftercare
Hayward, CA
795 Fletcher Lane, 94544
  • Primary focusAlcohol, Opioids, Stimulants, Nicotine and tobacco
  • Programs forYoung adults, Women, Men, Pregnant women
Team
PT
Patrice TrisvanGroup President | Opioid Treatment Programs (OTP)
ES
Evelyn SosaSenior Vice President of Operations | OTP
DG
Dan GreerSenior Vice President of Operations | OTP
TA
Tannie AlexanderDirector of Nursing Operations & Infrastructure | OTP
EC
Emily Cole, LPC SVice President of Counseling Services | NSC
SH
Sergio Huerta, MD, FASAMMedical Reviewer

Facility Type

Private RehabSmoking and Vaping PolicySmoking Friendly RehabVape Friendly Rehab

Licensing and Accreditation

CARF Accredited RehabCARFAccreditedAn international accreditor of rehabilitation and behavioural health services. Assessors visit the facility and review its practice against published standards. Voluntary, and renewed every one to three years.
DEA PrescriberRegisteredRegistered with the US Drug Enforcement Administration, which is required before controlled medicines can be prescribed or dispensed.
Federal ProgramCertifiedMeets federal requirements to receive Medicare or Medicaid funding, which carries conditions on staffing, safety and record keeping.
Health Department LicensedHealth DepartmentLicensedLicensed by the state or county health department, which inspects premises, safety and clinical standards. Required to operate.
SAMHSA Opioid Treatment ProgramCertifiedCertified by SAMHSA to run an opioid treatment programme, which is required before a facility may dispense methadone. Certification involves federal oversight and regular inspection.
SAMHSA ListedSAMHSAListedThe facility appears in the federal treatment locator maintained by the Substance Abuse and Mental Health Services Administration. It is a record that the facility exists and reports its services, not an assessment of quality.
State Addiction Agency LicensedState Addiction AgencyLicensedLicensed by the state agency responsible for substance use treatment. Required to operate, and involves inspection of premises, staffing and clinical practice.
State Licensed RehabState AuthorityLicensedHolds a current licence from the state authority that regulates treatment providers. Licensing is a legal requirement to operate, not a mark of distinction.

MedMark Treatment Centers – Hayward Detox and Rehab Services

MedMark Treatment Centers – Hayward is recorded as offering addiction detox, alcohol withdrawal management, drug withdrawal management, medically supervised detox and medication-assisted treatment (MAT). Attendance is scheduled, so treatment fits around work, study and family life. Medication-assisted treatment combines approved medication with counseling and clinical review.

Therapeutic approaches recorded include 12-step facilitation (TSF), behavioral therapies, cognitive behavioral therapy (CBT) and group therapy. Co-occurring mental health conditions are addressed alongside substance use, including post-traumatic stress disorder (PTSD) and trauma and stressor-related disorders.

Levels of Care

Aftercare and Continuing CareBuprenorphine-Assisted DetoxCarfentanil Detox ProgramCodeine Detox ProgramContinuing CareDetox by SubstanceDetox CentersDischarge PlanningEvening TreatmentFentanyl Detox ProgramFentanyl Patch (Duragesic) Detox ProgramHeroin Detox ProgramHydrocodone Detox ProgramHydromorphone (Dilaudid) Detox ProgramMedical DetoxMethadone-Assisted DetoxMorphine Detox ProgramNitazene Detox ProgramNorco Detox ProgramOnline Rehab and TelehealthOpioid Detox ProgramOutpatient DetoxOutpatient MAT ClinicOutpatient RehabOverdose Prevention EducationOxycodone Detox ProgramOxyContin Detox ProgramOxymorphone (Opana) Detox ProgramPercocet Detox ProgramPost-Treatment Follow-UpRecurrence PreventionRehab TransfersSuboxone Detox ProgramTramadol (Ultram) Detox ProgramVicodin Detox ProgramWeekend Rehab

Substances and Addictions Treated

Adderall RehabAlcohol Medication TreatmentAlcohol Only RehabAlcohol RehabBeer Addiction TreatmentBinge Drinking TreatmentCarfentanil RehabCodeine RehabConcerta RehabDexedrine RehabFentanyl Patch (Duragesic) RehabFentanyl RehabHeroin RehabHydrocodone RehabHydromorphone (Dilaudid) RehabIllicit OpioidsLiquor Addiction TreatmentLortab RehabMeperidine (Demerol) RehabMethadone ClinicMethadone Misuse TreatmentMorphine RehabNicotine and Tobacco TreatmentNitazene RehabNorco RehabOpioid DetoxOpioid Only RehabOpioid RehabOxycodone RehabOxyContin RehabOxymorphone (Opana) RehabPercocet RehabPrescription OpioidsPrescription Stimulant RehabRitalin RehabRoxicodone RehabSmoking Cessation CounselingStimulant RehabSuboxone Misuse TreatmentTapentadol (Nucynta) RehabTramadol (Ultram) RehabVaping CessationVicodin RehabVyvanse RehabWine Addiction Treatment

Mental Health Disorders Treated

Psychosocial RehabilitationSocial Skills Training

Counseling and Therapy

12 Step RehabAddiction CounselingAnger ManagementBrief InterventionCognitive Behavioral Therapy (CBT)Community Reinforcement ApproachContingency ManagementCounseling and TherapyEvidence-Based TherapyGroup TherapyIndividual TherapyMatrix Model TreatmentMotivational InterviewingTrauma Therapy

Specialized Programs

Adult RehabEarly HIV InterventionHepatitis Support ServicesHIV and Hepatitis CareHIV Support ServicesMen's Medicare RehabMen's Outpatient RehabMen's RehabMen's TelehealthMen's TRICARE RehabPregnant Women DetoxPregnant Women MATPregnant Women Medicare RehabPregnant Women MethadonePregnant Women Outpatient RehabPregnant Women SuboxonePregnant Women TelehealthPregnant Women TRICARE RehabRehab for Pregnant WomenWomen's Medicare RehabWomen's Outpatient RehabWomen's RehabWomen's TelehealthWomen's TRICARE RehabYoung Adult Rehab

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How Much Does Treatment at MedMark Treatment Centers – Hayward Cost?

Self-pay rates across California typically place a week of medical detox at $1,610 to $5,600 and standard outpatient care at $1,200 to $5,000 a month. MedMark Treatment Centers – Hayward may charge more or less, since its own prices were not found at the time of writing.

At most facilities the fee includes medical monitoring, the intake assessment, group therapy and individual counseling. Added costs tend to come from medication, lab tests and therapies such as CBT. MedMark Treatment Centers can tell you which of these apply to you.

Payment Options

Federally Funded RehabLow Cost RehabSelf Pay RehabSliding Scale MATSliding Scale Outpatient RehabSliding Scale RehabSliding Scale SuboxoneSliding Scale TelehealthState Funded by Treatment TypeState Funded DetoxState Funded MATState Funded MethadoneState Funded Outpatient RehabState Funded RehabState Funded SuboxoneState Funded Telehealth

Insurance Accepted

TRICAREMedicare

Medications Offered

Alcohol Addiction MedicationBuprenorphine MaintenanceBuprenorphine Maintenance Rehab That Takes InsuranceBuprenorphine Maintenance Rehab That Takes MedicaidDisulfiram (Antabuse)Disulfiram (Antabuse) Rehab That Takes InsuranceDisulfiram (Antabuse) Rehab That Takes MedicaidMedically Supervised Opioid TaperingMedically Supervised Opioid Tapering Rehab That Takes InsuranceMedically Supervised Opioid Tapering Rehab That Takes MedicaidMedication Assisted Treatment (MAT)Methadone MaintenanceMethadone Medication ClinicSuboxoneSuboxone and BuprenorphineSuboxone and Buprenorphine Rehab That Takes InsuranceSuboxone and Buprenorphine Rehab That Takes MedicaidSuboxone Rehab That Takes InsuranceSuboxone Rehab That Takes MedicaidSubutexSubutex Rehab That Takes InsuranceSubutex Rehab That Takes Medicaid

Support Services

Case ManagementCommunity OutreachEmployment SupportHealth and Wellness SupportHealth EducationHousing and Employment SupportHousing AssistanceIntervention ServicesPeer SupportPractical SupportRecovery CoachingRecovery Support Services

Assessment and Testing

Addiction EducationAddiction ScreeningAlcohol TestingAlcohol Testing That Takes InsuranceAlcohol Testing That Takes MedicaidComprehensive Addiction Assessment That Takes MedicaidDrug and Alcohol TestingEducation ProgramsHepatitis EducationHIV EducationMedical EvaluationOral Fluid Drug TestingScreening and AssessmentTobacco Use ScreeningUrine Drug Testing

Key Locations Served Near You

MedMark Treatment Centers – Hayward

795 Fletcher Lane, Hayward, California, 94544

Accepts Insurance

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MedMark Treatment Centers – Hayward

795 Fletcher Lane, Hayward, California, 94544

Accepts Insurance

MedMark Treatment Centers – Hayward — Compiled From Public Records

Recorded credentials for this listing, drawn from public records rather than confirmed firsthand by our editorial team:

CARF Accredited RehabDEA Registered PrescriberFederally Certified RehabHealth Department LicensedSAMHSA Certified Opioid Treatment ProgramSAMHSA ListedState Addiction Agency LicensedState Licensed Rehab
Unclaimed — no one from this facility has claimed this listing. Claim this listing
Last updated 2 October 2026.

MedMark Treatment Centers – Hayward Reviews and Ratings

Reviews of MedMark Treatment Centers help in two directions. Reading them helps you prepare questions for the admissions team, and writing one, if you have been a patient, helps the next family prepare theirs.

4.3
★★★★☆
22 reviews on Google
515
40
30
20
12
Breakdown of the 17 most recent reviews with text
★★★★★
Casey Bryant2 years ago

Friendly staff, very respectful and they do their job. I have had nothing other than five star service here at Medmark Hayward.

★★★★★
Jessica Nero-baisa2 years ago

Been coming here for a long, long time Through my recovery I have had many counselors some better than others funny how things happen my husband transferred to Medmark from BAART in Oakland crazy we both ended up on… Rich’s case load { R.I.P. RICH another great counselor } so you know we both can’t have the same counselors so of course I got kicked to the curb. Best curb I got kicked to { so to speak. } which is currently Nicole Martinez, the best I’ve ever had , She definitely help me get to where I am now she goes above and beyond helped me in my life so much, I don’t even know what I’m gonna do when we goes our separate ways 😔..I wish I can take her with me. I wish I can give her 20 ⭐️’s but was only given an option of 5 ⭐️. ⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️🙌🏾🙌🏾🙌🏾🙌🏾🙌🏾🙌🏾⭐️⭐️⭐️⭐️⭐️⭐️

★★★★★
Wicho I2 years ago

Hi I'm Luis and I just wanna say my counselor is amazing her name is katt and I could not do it with out her.love u katt

★★★★★
Big Body Denali3 years ago

Best n da Bay...

★☆☆☆☆
Rogers Jones4 years ago

Not a good place. Legal drug dealers. They have financial help too they tell you to sell your stuff like if you're on dope still they say well you spend it on dope so why not spend it on this dope!!! Yes they want to… get you addicted to methadone to keep you on it for years.

★★★★★
Michael Venezia4 years ago

I am a Client at this location. I have interacted with gilbert and talked with him about enough personal matters to know that he genuinely cares about his clients and attempts to do what he can to help out his fellow… human beings. I am grateful to be able to call him a counselor and a friend

★★★★★
Obadiah Watkins4 years ago

Gilbert is a fantastic counselor and has helped me immensely. Any issue I have addressed with him he has been able to find a good solution. Since beginning my work with Gilbert my attendance has improved, I haven't… missed a single day. Thanks Gilbert for this and your future support..!

★★★★★
Daniel Erickson4 years ago

My name is Daniel and Gilbert Roos is my counselor and he has helped me tremendously in stopping my drug use of pills. My family is very happy as iam also with the treatment

★★★★★
Colleen Dutter4 years ago

My huband has been going here for almost a year now, Gilber Roos is his counselor, and has always been very informative. Gilbert has been a true blessing in our lives.

★★★★★
Shawn Moayer4 years ago

My counselor Gilbert works with me and goes out of his way to assist me in my maintenance treatment. I recommend him and Alan from experience these two guys are very attentive to your needs

★★★★★
John Doee6 years ago

It the mob

★★★★★
Cameron DeMiguel6 years ago

Medmark is a great Clinic with a good staff. Nicole is a great counselor that puts her clients needs first. It’s not just a paycheck to this company, many of the employees are sober addicts that have been through… sobriety. Sarina the director is also top notch. If your struggling with opiate addiction this is the clinic you want to choose. Medmark saved my life!!!

★★★★★
Nick Penland7 years ago

MedMark in Hayward is a methadone clinic and has been a life saver for not only myself but my family as well. The program is simple to enter and it's all about getting you stable and getting help. When you enter you're… assigned a counselor, and if you're serious about getting stable, you'll quickly become friends. They've lived what you've been thru, they understand and never judge and can help with a lot of stuff not just addiction related. For a small organization, they're amazing and serve HUNDREDS of patients. Thank you for everything you've done and are doing for us patients and to help stop the opioid crisis here in the Bay Area.

★☆☆☆☆
Test Google8 years ago

To Whom it May Concern, Legal drug dealers, no compassion for their clients. This place is horribly mismanaged and I have seen some of staff first hand make questionable decisions. I believe they are good people but… this is a medical building right, so I feel like there should be some level of professionalism.There was even a point where they decided to laugh / make jokes about the patients condition when they clearly needed help.. and as someone whos been through it its just not ok to make fun of someone when they are at the lowest point in their life. Let me get into some more details about my experience here: These people seem to have no interest in actually getting anyone off opiates, rather they just want to give you your fix daily and collect that easy 400$ a week from you or your insurance. I've seen the same common traits and complaints from people that have come there for a long time, and sure it does help kick street drugs but the addiction to methadone is no joke either, and it has some very serious new symptom's tied to it. I think the owner and the staff need to be held accountable for poor business and social practices and need to start treating the patients like actual medical patients, not like druggies. Don't push them around and make them jump through hoops just so they can get your drugs because you know they are desperate enough to do it. When I came in for intake I discovered the doctor only works one time a week (if that, sometimes the doctor doesn't show at all or shows up extremely late) They have their intakes come in first thing 5AM and agree to a 2-3 hour intake process , mine took 7 hours, from the time they opened until closing. Overall I think this place(MedMark Hayward ,maybe the other MedMark locations are better?) needs to be reviewed and held to a certain standard in order to ACTUALLY help patients, I would like to see people actually speak out on their experience here because in my short time coming I've seemed to question many of their practices and if this program is actually the solution, or simply just a way to get "dosed" and forget about the problem until the next day.. many of their long time patients have come for yearsssss.. maybe this was their choosing.. but when I signed up I was told you find a good level for you then slowly taper down so that you can get off opiates altogether in 3-6 month maintenance programs, but from what I can see they prefer to keep people coming back forever. And if you inquire about the 21 day detox program, it just so happens that medical doesn't cover that! so you'll be paying 280$ out of pocket if that's the route you want to go. I recommend talking to a doctor or clinic that offers Suboxone(buprenorphine) This clinic MedMark Hayward was supposed to offer suboxen some months ago I was told(It even says they offer it now on a poster in their lobby!), but since the doctor is hardly there / only works once a week he hasn't got around to it. for MONTHS... It just all seems so unprofessional to me, Another concern is privacy. They say they care about anonymity / privacy but they use a flawed number system as well as constantly say your real name and birthday out loud in order to confirm you. Another one that bugged me was writing my social on many pages in the intake process, and computer forms. And then having said pages left sitting around with private information just sitting there for anyone to see that just happens to walk by which includes other patients, not just medmark staff... I really hope this message gets in the right hands and some actions are taken to improve the clinic and the experience overall, Not just for the patients but everyone involved. this opioid crisis is serious and it should be treated as such, it shouldn't just be an seen as easy paycheck and it shouldn't just be a place for patients to forget about the problem that brought them there to begin with. because EVENTUALLY they will still have to face that problem, or stay taking methadone forever at the cost of 380$ a week.. ~A Former patient and a concerned citizen

★★★★★
cathy von sivers9 years ago

Wonderful clinic. Went as a courtesy dose very friendly and professional.

★★★★★
Brian Lyon9 years ago

Great clinic that really works with and cares about their clients

★★★★★
Michael Gilbert10 years ago

It's clean it's quiet and the people that work there don't take any crap from anybody they try to work with every individual that comes in there they go out of their way to help them

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Ratings and reviews from Google, collected 22 September 2026. RehabSeekers does not edit or remove them.

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