In Tamalpais-Homestead Valley, California, the reported gonorrhea rate in Marin County runs about 46% lower than the US average. If you're looking to get tested before starting a new relationship or as part of ongoing care, clinics may bill insurance or offer sliding-scale fees, while many private labs let you pay a flat self-pay price. Below you'll find options to compare.
Available testing centers
9 testing options are listed for Tamalpais-Homestead Valley, CA. The nearest, Quest Diagnostics, is about 1.2 miles away. Compare community and public clinics, private labs, and at-home kits below.
Listings tagged Community health center are federally funded health centers and rural clinics that treat everyone regardless of insurance or ability to pay: required to bill on a sliding fee scale and provide confidential care, and in many states minors may consent to their own STI testing. A Title X tag flags centers funded for confidential family-planning services; confirm current participation when you call.
Source: CMS FQHC & Rural Health Clinic enrollment files (data.cms.gov), refreshed quarterly. Title X status reflects the latest OPA grantee list.
Marin City Health and Wellness Center - Phillips Drive, in Sausalito, anchors its STI care in the federal FQHC sliding-scale model: fees adjust to income, and no one is turned away for inability to pay. Walk-in STI screening covers syphilis, gonorrhea, and chlamydia.
Tests offered
Fees & payment
UCSF Health-GoHealth Urgent Care in Mill Valley tests for gonorrhea, chlamydia, syphilis, HIV, herpes, hepatitis, and TB, treating bacterial STIs the same visit, on a fee-based sliding scale with insurance and Medicaid accepted; no appointment needed.
For anyone whose primary language isn't English (whether navigating a new diagnosis, asking about treatment options, or weighing prevention) interpretation services are available at UCSF Health-GoHealth Urgent Care without rerouting the visit. That standing capability means the clinical conversation happens in real time, with the provider, not as an afterthought.
PrEP at UCSF Health-GoHealth Urgent Care involves the full clinical loop: initial HIV testing to confirm eligibility, a prescription for daily oral medication, and the follow-up labs, typically HIV and kidney function, required to continue it safely. PEP is likewise prescribed on-site, meaning the course of antiretroviral medication starts without handoffs to another provider.
For anyone without a regular primary care provider, or paying out of pocket and trying to do a genuinely complete workup, UCSF Health-GoHealth Urgent Care's panel extends to herpes simplex, hepatitis A, hepatitis B, and hepatitis C alongside the core bacterial and HIV tests. That matters when a single visit needs to cover ground a basic panel won't.
Languages
English, Interpretation Services Available for Non-English Languages
Tests offered
Serves
Care services
Prevention services
Fees & payment
Listing verified Oct 2025 · Source: CDC NPIN
Marin Community Clinics in Larkspur runs on sliding-scale fees with Medicaid, Medicare, and private insurance all accepted, covering gonorrhea, chlamydia, syphilis, herpes, hepatitis A, B, and C, TB, and HIV. Bacterial infections treated same visit, by appointment.
Plenty of clinics manage a language gap with a patch, a third-party line, a borrowed staff member. At Marin Community Clinics, Spanish and Vietnamese are spoken directly in clinical encounters, and interpretation is available for additional languages, so the conversation between patient and provider stays intact.
Ryan White funding at Marin Community Clinics means HIV care doesn't stop at a positive result: the program underwrites ongoing antiretroviral prescribing, lab monitoring, and case management for eligible patients, covering the gap when insurance falls short or doesn't exist.
Marin Community Clinics prescribes both PrEP and PEP directly, which means patients get consistent follow-up (labs, refills, and dosing questions) handled by the same clinical team rather than pieced together across providers.
Languages
English, Interpretation Services Available for Non-English Languages, Spanish, Vietnamese
Tests offered
Serves
Care services
Prevention services
Fees & payment
Listing verified Mar 2026 · Source: CDC NPIN + HRSA
Ritter Center Complex in San Rafael carries federally qualified health center standing, which means STI screening (syphilis, gonorrhea, and chlamydia) is priced on a sliding scale tied to your income, so the cost adjusts to what you can actually pay. No appointment is required.
Tests offered
Fees & payment
Ritter Health Center in San Rafael runs on sliding-scale fees and accepts Medicaid, Medicare, and most insurance, making the full panel (gonorrhea, chlamydia, syphilis, HIV, hepatitis C, and TB) reachable for nearly anyone. Walk-ins are welcome, bacterial STIs are treated the same visit, and care is delivered in Spanish.
For someone navigating an STI panel, a hepatitis C diagnosis, or substance-use treatment without fluent English, the gap between understanding a result and acting on it can quietly become a health gap. Ritter Health Center conducts care in Spanish end-to-end (clinician conversations, treatment decisions, and follow-up) so nothing critical gets lost between visits.
A positive hepatitis C antibody without an attached treatment path often means months of specialist scheduling, repeat labs, and out-of-pocket costs before a prescription is written. Ritter Health Center closes that gap by managing hepatitis C treatment on-site, the diagnosis and the cure live at the same address in San Rafael.
When STI care and substance-use treatment sit at different addresses, the second appointment is the one that often doesn't happen, and the underlying factor driving repeated infections goes unaddressed. Ritter Health Center offers both services, so the clinical relationship built around one doesn't have to be rebuilt from scratch somewhere else in San Rafael.
Languages
English, Spanish
Tests offered
Serves
Care services
Prevention services
Fees & payment
Listing verified Sep 2025 · Source: CDC NPIN + HRSA
Free tool · not a clinic
Testing too soon can miss an infection. Enter the date of possible exposure to see the earliest a test can reliably detect each STI.
| Infection | Earliest reliable test | Conclusive after |
|---|---|---|
| Chlamydia | 7 days after exposure | 14 days after exposure |
| Gonorrhea | 7 days after exposure | 14 days after exposure |
| Trichomoniasis | 7 days after exposure | 28 days after exposure |
| HIV (NAT / RNA) | 10 days after exposure | 33 days after exposure |
| HIV (4th-gen Ag/Ab) | 18 days after exposure | 45 days after exposure |
| HIV (antibody) | 21 days after exposure | 84 days after exposure |
| Syphilis | 21 days after exposure | 42 days after exposure |
| Hepatitis B | 21 days after exposure | 42 days after exposure |
| Hepatitis C | 56 days after exposure | 77 days after exposure |
| Herpes (HSV) | 28 days after exposure | 112 days after exposure |
Guidance only, confirm timing with a clinician. A negative result before the conclusive date may need a repeat test.
Typical out-of-pocket ranges by option, actual cost depends on which tests you need.
Public / community clinic
Free HIV testing is common
Private lab (self-pay)
Never billed to insurance
At-home kit
Mailed to your door, private
Doctor / urgent care
Often $0 preventive with insurance
No centers match those filters. Clear the service-type filter or the opening-hours filters to see every center.
Every other option
Beyond the dedicated testing centers above: at-home kits by mail, hospital labs certified for STI testing, local clinicians who can order a panel during a regular visit, pharmacies for self-test kits and prescriptions, and online PrEP & treatment.
Test from home
The nearest testing center is about 1 mile away; if you'd rather skip the trip, an at-home kit ships to Tamalpais-Homestead Valley, you collect the sample privately, and mail it back to a CLIA-certified lab. Results come online in days, with a clinician available if anything is positive. Same labs as a clinic, no waiting room, and you can read how accurate at-home STD tests are before you order.
Want a free option first? The CDC-supported TakeMeHome (opens in a new tab) program mails free at-home HIV self-test kits, and, in many areas, free STI kits, to your door, with no insurance or payment needed. The paid kits below add broader panels and faster turnaround.
In-home collection
$79 & up
Best range: couples & full panels
$79 & up
Best for simplicity & support
$89 & up
Every kit uses CLIA-certified labs. At-home testing is for screening; a reactive result should be confirmed and treated by a clinician. Prices and panels shown are illustrative and change often, confirm current details on the provider's site.
Also in the area
Beyond the public testing sites above, these federally certified (CLIA) labs serve Marin County, each lab's town is shown on its card below. Many test through a doctor's order or by appointment rather than walk-in, so call ahead to confirm STD/STI testing and availability before visiting.
591 Redwood Highway, Suite 2210, Mill Valley, CA 94941
CMS-certified lab
655 Redwood Highway, Suite 246, Mill Valley, CA 94941
CMS-certified lab
535 Miller Avenue, Mill Valley, CA 94941
CMS-certified lab
655 Redwood Hwy Frontaage Road, Suite 100, Mill Valley, CA 94941
CMS-certified lab
Source: CMS CLIA registry (Provider of Services), Q1 2026. Federal public records: active CLIA-certified laboratories near Tamalpais-Homestead Valley. A CLIA certificate records only that a laboratory is federally certified — it does not confirm the site performs STD testing, nor its hours, price or access. Inclusion is not an endorsement; always call to verify.
Local clinicians
Beyond dedicated clinics, 3,726 primary-care, OB-GYN, infectious-disease and other clinicians have a CMS practice record within 30 miles of Tamalpais-Homestead Valley. They may be able to evaluate symptoms or order a confidential STD panel during a regular visit, and 1,585 offer telehealth.
Robert Belknap, MD Telehealth
Internal medicine · 655 Redwood Highway, Mill Valley
Irene Teper, MD Telehealth
Internal medicine · 655 Redwood Hwy Frontage Road, Mill Valley
Douglas Cohen, MD Telehealth
Internal medicine · 655 Redwood Hwy Frontage Road, Mill Valley
Roderick Seamster, MD
Internal medicine · 100 Phillips Drive, Sausalito
Curtis Robinson, MD Telehealth
Family medicine · 279 Miller Avenue, Mill Valley
John Martinez, MD
Family medicine · 750 Redwood Hwy Frontage Road, Mill Valley
These are registry-listed clinicians, not dedicated STD-testing clinics. CMS records do not independently verify current licensure, testing services, availability, price, or new-patient status. Confirm each detail before booking. Source: CMS Doctors & Clinicians.
Nearby pharmacies
No pharmacy near Tamalpais-Homestead Valley, CA publishes an STD-related service or holds a current CLIA testing certificate, so these are simply the closest. Contact a location directly to confirm counter hours, services, prices, and availability before visiting.
0.7 mi 
1.0 mi 
1.5 mi 
1.7 mi Showing the 4 closest pharmacies to Tamalpais-Homestead Valley, CA.
Directory records identify nearby pharmacies. Service, stock, price, and hours information is shown only when supported by current location-specific evidence.
Prevention & treatment
Testing is one step. For residents of Tamalpais-Homestead Valley, telehealth covers the rest: HIV-prevention medication (PrEP) and DoxyPEP to lower future risk, and discreet online treatment if a result comes back positive. All prescribed by licensed U.S. clinicians.
$0 with most insurance
Free online PrEP & DoxyPEP: HIV prevention, home lab kits, no in-person visit
From $0 insured
Telehealth PrEP & DoxyPEP with at-home testing and ongoing monitoring
Visit from $0 insured
Telehealth STI treatment and sexual-health care, delivered or to your pharmacy
Visit from $39
Online STI treatment & DoxyPEP: same-day prescriptions to your pharmacy
Pricing varies by insurance and changes often, confirm on the provider's site. These services are not a substitute for emergency care.
STD stats & rates
How reported STI rates in Marin County, the county that includes Tamalpais-Homestead Valley, compare with California and U.S. averages, based on the most recent 2023 surveillance data. An estimated ~16% of residents are aged 15–34 (ACS), the age group with the highest reported chlamydia and gonorrhea rates nationally.
#38 of 58 California counties for chlamydia, a higher rate than 34% of the state
| Infection | Marin County | California | United States |
|---|---|---|---|
| Chlamydia | 294.4 749 cases ▼ 40% | 491.1 | 492.2 |
| Gonorrhea | 97.1 247 cases ▼ 49% | 190.2 | 179.5 |
| Syphilis (P&S) | 5.1 13 cases ▼ 69% | 16.3 | 15.8 |
| Syphilis (early) | 7.1 18 cases ▼ 63% | 19.1 | 16 |
| Syphilis (late/unknown) | 12.6 32 cases ▼ 73% | 46.7 | 29.5 |
Rates per 100,000 population, 2023. Source: CDC NCHHSTP AtlasPlus (county, state & U.S., all-ages basis). Population figures: U.S. Census Bureau ACS. These figures are the latest available surveillance estimates. Bars are scaled to the highest rate shown.
Reading these numbers: reported case rates only count infections that were actually tested for and diagnosed, so they track local screening effort as much as true spread: a higher rate can reflect more testing, a lower one less. Either way, most STIs cause no symptoms, so treat the figures above as context rather than a verdict, and test on the CDC's schedule regardless of how your area looks.
Between 2020 and 2023 in Marin County, chlamydia has risen from 214.2 to 294.4 per 100,000 (37%), gonorrhea has risen from 50.7 to 97.1 per 100,000 (92%), and P&S syphilis has fallen from 6.9 to 5.1 per 100,000 (26%).
The 2020 dip reflects reduced pandemic-era screening, not lower transmission. Source: CDC NCHHSTP AtlasPlus (county, state & U.S., all-ages basis).
Community health context
Sources: CDC PLACES (ZIP), County Health Rankings, CDC/ATSDR SVI, HRSA HPSA, HRSA MUA/P, Neighborhood Atlas ADI. Lower insurance coverage, fewer routine checkups, and a thin primary-care ratio all raise the value of low-cost public clinics and at-home testing in Marin County.
Local HIV snapshot
Marin County HIV care continuum (2023)
Marin County recorded 10.8 new HIV diagnoses per 100,000 (2023), against 14.9 statewide and 13.7 nationally. Among Marin County residents living with HIV, 74.8% are in care · 71% are virally suppressed. Early, routine testing is what moves these numbers: it is the entry point to PrEP, treatment, and viral suppression.
Sources: AIDSVu (Emory/Gilead) · CDC AHEAD · CDC AtlasPlus · CDC NCHHSTP AtlasPlus (county care continuum). The CDC recommends everyone aged 13–64 test for HIV at least once: every lab and clinic listed above offers HIV testing, and free rapid HIV testing is available at a local health department.
Congenital syphilis, passed from parent to baby in pregnancy, is the fastest-rising STI in the country. U.S. cases climbed from 2,163 in 2020 to 3,882 in 2023. It is almost entirely preventable: the CDC recommends a syphilis test at the first prenatal visit, and every clinic and lab listed for Marin County tests for syphilis.
Source: CDC NCHHSTP AtlasPlus, 2023 (county-level congenital syphilis is not published).
Local resources & officials
Data & references
Local context
Almonte sits tucked against the hillside with the kind of unhurried feel that makes it easy to assume every practical errand is equally simple to handle. Getting to a clinic, though, means navigating CA 1 or US 101 out of the valley, since the options listed on this page serve the broader Marin area rather than sitting on a local corner. For anyone without a flexible midday schedule, that drive is a real consideration. The community skews heavily toward long-settled households: most residents own their homes, and a majority of adults are married, living in households that average just over three people.
That stability shapes daily rhythms in ways that can quietly absorb a medical errand or equally let one drift. Young adults in their late teens and twenties make up a smaller slice of the population here than in more transient communities, but that relative scarcity does not reduce individual risk, and the nearest clinic listed here still requires a deliberate trip rather than a detour. For the roughly one in four residents who rent, the picture is sharper: monthly costs near the top of most California markets leave little slack for out-of-pocket screening fees.
Getting there
Tamalpais-Homestead Valley scores 12.27/20 on the EPA walkability index, so many trips are walkable or a short ride, though a car still gives you the widest choice of testing centers.
Source: EPA National Walkability Index 2021.
ZIP 94941 snapshot
ZIP-level Census figures for the wider 94941 area around Tamalpais-Homestead Valley: a single ZIP can span several communities, so they describe the area, not Tamalpais-Homestead Valley alone.
Tamalpais-Homestead Valley sits in Marin County, ZIP 94941. Local context that shapes where residents test:
Local landmarks
Neighborhoods & communities
Major routes
Nearby cities & towns
Just outside Tamalpais-Homestead Valley? These nearby communities have their own testing guides: clinics, at-home kits, and free screening close to home.
Reference
Everything to know before you test in Marin County: the CDC's screening guidelines, each infection's detection window, per-test reference prices, and your privacy rights under California law. If you have symptoms right now, our confidential symptom checker maps them to the tests worth considering.
Based on current CDC screening recommendations.
| Group | Tests | How often |
|---|---|---|
| Everyone aged 13–64 | HIV | At least once |
| Sexually active women under 25 | Chlamydia, gonorrhea | Every year |
| Women 25+ with new or multiple partners | Chlamydia, gonorrhea | Every year |
| Pregnant people | HIV, syphilis, hepatitis B & C, chlamydia | Early in pregnancy |
| Gay & bisexual men (MSM) | Chlamydia, gonorrhea, syphilis, HIV | Every 3–6 months |
| Anyone who shares injection equipment | HIV, hepatitis B & C | At least yearly |
| All adults at least once | Hepatitis C | At least once |
Testing too early can return a false negative, confirm timing with a Tamalpais-Homestead Valley-area provider.
| Infection | Earliest reliable test | Sample |
|---|---|---|
| Chlamydia | 1–2 weeks | Urine or swab |
| Gonorrhea | 1–2 weeks | Urine or swab |
| Trichomoniasis | 1–4 weeks | Urine or swab |
| HIV (NAT / RNA) | 10–33 days | Blood |
| HIV (4th-gen Ag/Ab) | 18–45 days | Blood |
| HIV (antibody) | 3–12 weeks | Blood / oral |
| Syphilis | 3–6 weeks | Blood |
| Hepatitis B | 3–6 weeks | Blood |
| Hepatitis C | 8–11 weeks | Blood |
| Herpes (HSV) | 4–16 weeks (antibody); swab a sore | Blood / swab |
These are the federal Medicare reference prices for processing each lab test. Public clinics and the community health centers serving Tamalpais-Homestead Valley often test free or on a sliding scale; private labs and at-home kits bundle several tests into one fee. Use this as a per-test benchmark before you pay out of pocket, or see the full guide to STD test costs for insurance, free, and at-home options.
| Test | Reference price | CPT / HCPCS |
|---|---|---|
| Chlamydia (NAAT) | $47.80 | 87491 |
| Gonorrhea (NAAT) | $47.80 | 87591 |
| Trichomoniasis (NAAT) | $47.76 | 87661 |
| HIV-1/2 antigen/antibody | $26.87 | 87389 |
| HIV-1/2 antibody | $22.44 | 86703 |
| Syphilis (RPR/VDRL) | $5.61 | 86592 |
| Syphilis (treponemal antibody) | $17.49 | 86780 |
| Herpes (HSV NAAT) | $47.76 | 87529 |
| Hepatitis B surface antigen | $15.33 | 87340 |
| Hepatitis C antibody | $29.16 | 86803 |
Source: Medicare Clinical Laboratory Fee Schedule, CMS, 2025 rates (data.cms.gov). Reference rate for the lab assay only: a clinic visit, sample collection, or a bundled multi-test panel may cost more. Medicaid and most insurers cover STD screening at no out-of-pocket cost.
Two things that actually depend on California law: who can consent, and whether partners can be treated without their own visit. Everything else about testing privately is the same nationwide (see below).
In California, a minor aged 12 or older can consent to confidential STI testing and treatment on their own, no parental permission is required.
California permits Expedited Partner Therapy (EPT): if you test positive for chlamydia or gonorrhea, your provider can give you medication (or a prescription) to pass to your partner, no separate exam or appointment needed for them.
Keeping a test private works the same in every state. Whether an STD test shows on insurance (the EOB), how to test anonymously, and self-pay options that leave no insurance trail don’t change by location.
Learn more about confidential STD testing in CaliforniaSource: Guttmacher Institute, Minors' Access to STI Services; CDC, Legal Status of Expedited Partner Therapy. General information, not legal advice.
Good to Know
Answers to the questions people ask most before getting tested.
There are 9 options within a 30-mile drive.
Yes, Medicaid typically covers it, and public clinics are free either way.
Yes, free HIV testing is available at public clinics in the area.
A full panel typically covers chlamydia, gonorrhea, syphilis, HIV, and hepatitis B and C.
Marin County reported ~294 chlamydia cases per 100,000 in 2023, below the California average.
Yes, PrEP, a daily pill that helps prevent HIV in HIV-negative people, is available in the area.
In California, people under 18 can consent to confidential STD testing and treatment on their own.
Chlamydia is checked with a simple urine sample or a swab; lab results usually come back in a day or two.
Reputable kits use the same lab methods as clinics; any positive should be confirmed and treated by a provider.
Get treated, notify partners, pause sex until cleared, and follow up, the infection is manageable.
Have a different question? Browse the full STD & STI FAQ library, every question we answer, in one place.