Contra Costa County reports about 13 new HIV diagnoses per 100,000 residents, near the US average. Whether it's your first STI test or a routine screening in Hercules, California, you have options: public clinics keep costs down, private labs prioritize speed, and at-home kits trade a clinic visit for convenience.
Available testing centers
12 testing options are listed for Hercules, 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.
LifeLong Rodeo Health Center, in Rodeo, earns its federally qualified standing by tying every STI visit to a sliding-scale fee that adjusts with each patient's income. Walk-ins are welcome for syphilis, gonorrhea, and chlamydia screening, with no fixed price blocking the door.
Tests offered
Fees & payment
LifeLong Medical Care in Pinole covers HIV, syphilis, gonorrhea, chlamydia, herpes, hepatitis A, B, and C, and TB on a sliding scale, with HIV testing free outright and Medicaid and Medicare both accepted: appointments are required, and bacterial STIs are treated the same visit.
The sliding-scale floor at LifeLong Medical Care in Pinole lands at no charge: the full panel, treatment, vaccines, and prevention services all carry that same floor. That means cost is never a reason to delay testing or return for follow-up care.
LifeLong Medical Care in Pinole delivers care directly in Spanish, which means a patient's questions about a diagnosis, a medication, or a prevention option get answered in full. Not summarized, not simplified.
Prevention prescribing is often treated as a specialty add-on that requires a separate appointment elsewhere. LifeLong Medical Care in Pinole writes PrEP and PEP prescriptions directly, keeping both daily prevention and post-exposure management inside the same clinical relationship.
Languages
English, Spanish
Tests offered
Serves
Care services
Prevention services
Fees & payment
Listing verified Dec 2025 · Source: CDC NPIN + HRSA
Planned Parenthood Northern California in Richmond pairs rapid HIV testing, hepatitis B and C, herpes, syphilis, gonorrhea, and chlamydia with same-visit treatment for bacterial infections. All on a sliding scale, by appointment, with every service provided at no fee.
Sliding-scale clinics typically reduce costs, they rarely eliminate them entirely. Planned Parenthood Northern California in Richmond charges nothing: testing, treatment, PrEP, vaccines, and counseling all carry a zero-dollar balance, regardless of what you use.
When a language gap lives inside a medical visit, the risk isn't awkwardness. It's a missed diagnosis or a misunderstood treatment plan. At Planned Parenthood Northern California in Richmond, Spanish is spoken on-site, and interpretation is available for other languages, so nothing critical depends on a summary after the fact.
Planned Parenthood Northern California in Richmond holds Title X designation, which means minors can receive family planning and STI care, including testing and treatment, with legally protected confidentiality, no parental billing trail, and no separate hurdles to clear before care begins.
Languages
English, Interpretation Services Available for Non-English Languages, Spanish
Tests offered
Serves
Care services
Prevention services
Fees & payment
Listing verified Jul 2025 · Source: CDC NPIN
Contra Costa Health Services in San Pablo requires an appointment and covers gonorrhea, chlamydia, syphilis, herpes, and rapid or conventional HIV testing on a sliding-scale fee open to anyone, with same-visit treatment for bacterial infections, HPV and hepatitis A and B vaccines, and PrEP available.
When a diagnosis or a prescription needs explaining in Laotian, Russian, Spanish, or Vietnamese and the clinic can't deliver that directly, the appointment ends with gaps. Misread dosing, a question left unasked, a follow-up that doesn't happen. Contra Costa Health Services carries clinical staff across all four languages, so nothing that matters gets lost between the visit and the treatment.
PrEP at Contra Costa Health Services means a provider evaluates your candidacy, writes the prescription, and schedules the follow-up labs. The HIV tests and kidney function panels that must recur every three months to keep the regimen going. PEP is also available, stocked and prescribed on-site rather than pieced together across separate facilities.
Contra Costa Health Services tests for herpes alongside gonorrhea, chlamydia, syphilis, and HIV. A capability that matters for anyone without a regular provider who needs a single visit to answer the full picture. That standing panel means herpes doesn't require a separate referral or a second appointment to address.
Languages
English, Laotian, Russian, Spanish, Vietnamese
Tests offered
Serves
Care services
Prevention services
Fees & payment
Listing verified Jan 2026 · Source: CDC NPIN + HRSA
La Clinica Vallejo, in Vallejo, carries federally qualified health center status. Meaning its sliding-scale fees are tied directly to household income, making STI screening a realistic option regardless of ability to pay. Walk-ins are welcome for syphilis, gonorrhea, and chlamydia testing.
Tests offered
Fees & payment
George & Cynthia Miller Wellness Center in Martinez carries FQHC standing and NHSC sliding-fee designation, making income-scaled STI screening available to cash-paying patients, those between coverage, or anyone managing costs without insurance perks. Walk in for syphilis, gonorrhea, and chlamydia testing priced according to what you actually earn.
Tests offered
Fees & payment
A public STD-testing location about 7 miles from Hercules.
Languages
English, Spanish
Tests offered
Serves
Care services
Prevention services
Fees & payment
Listing verified Feb 2026 · Source: CDC NPIN + HRSA
Family Health Services - Vallejo holds a federal community health mandate, meaning anyone in Vallejo (uninsured, between providers, or paying out of pocket) pays fees scaled to income. Walk-ins are welcome for syphilis, gonorrhea, and chlamydia screening, with no set price regardless of insurance status.
Tests offered
Fees & payment
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 Hercules, 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 for simplicity & support
$89 & up
Best value: single tests
$49 & 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 Contra Costa 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.
2500 Alhambra Avenue, Martinez, CA 94553
CMS-certified lab Accredited · Joint Commission
2500 Alhambra Avenue, Martinez, CA 94553
CMS-certified lab Accredited · Joint Commission
150 Muir Road, Martinez, CA 94553
CMS-certified lab Accredited · College of American Pathologists
2500 Alhambra Ave Room 209, Martinez, CA 94553
CMS-certified lab
500 Alfred Nobel Dr Suite 185, Hercules, CA 94547
CMS-certified lab
Showing the nearest 5 CLIA-certified labs.
Source: CMS CLIA registry (Provider of Services), Q1 2026. Federal public records: active CLIA-certified laboratories near Hercules. 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, 4,241 primary-care, OB-GYN, infectious-disease and other clinicians have a CMS practice record within 30 miles of Hercules. They may be able to evaluate symptoms or order a confidential STD panel during a regular visit, and 1,793 offer telehealth.
Rodolfo Cadang, MD Telehealth
Internal medicine · 500 Alfred Nobel Drive, Hercules
Rachael Spradley, DO Telehealth
Family medicine · 1301 Pinole Valley Road, Pinole
Patricia Oconnor, MD Telehealth
Family medicine · 1660 San Pablo Avenue, Pinole
Naoko Ikeda, DO Telehealth
Family medicine · 2160 Appian Way, Pinole
Michael Brown, MD
Urology · 1430 Tara Hills Drive, Pinole
Isabelle Cohen, MD Telehealth
OB-GYN · 2970 Hilltop Mall Road, Richmond
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 Hercules, 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.
Savon Drugs
0.8 mi
0.9 mi 
1.1 mi Kaiser Permanente Phrmcy
1.7 mi
1.8 mi Showing the 5 closest pharmacies to Hercules, 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 Hercules, 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.
Visit from $39
Online STI treatment & DoxyPEP: same-day prescriptions to your pharmacy
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
$0 with most insurance
Free online PrEP & DoxyPEP: HIV prevention, home lab kits, no in-person visit
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 Contra Costa County, the county that includes Hercules, compare with California and U.S. averages, based on the most recent 2023 surveillance data. An estimated ~22% of residents are aged 15–34 (ACS), the age group with the highest reported chlamydia and gonorrhea rates nationally.
#19 of 58 California counties for chlamydia, a higher rate than 67% of the state
| Infection | Contra Costa County | California | United States |
|---|---|---|---|
| Chlamydia | 427.7 4,940 cases ▼ 13% | 491.1 | 492.2 |
| Gonorrhea | 127.9 1,477 cases ▼ 33% | 190.2 | 179.5 |
| Syphilis (P&S) | 13.2 153 cases ▼ 19% | 16.3 | 15.8 |
| Syphilis (early) | 9 104 cases ▼ 53% | 19.1 | 16 |
| Syphilis (late/unknown) | 22.3 257 cases ▼ 52% | 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 Contra Costa County, chlamydia has risen from 386.3 to 427.7 per 100,000 (11%), gonorrhea has fallen from 177.7 to 127.9 per 100,000 (28%), and P&S syphilis has fallen from 15.5 to 13.2 per 100,000 (15%).
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 Contra Costa County.
Local HIV snapshot
Contra Costa County HIV care continuum (2023)
Contra Costa County recorded 12.7 new HIV diagnoses per 100,000 (2023), against 14.9 statewide and 13.7 nationally. Among Contra Costa County residents living with HIV, 80.2% are in care · 73.4% 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 Contra Costa County tests for syphilis.
Source: CDC NCHHSTP AtlasPlus, 2023 (county-level congenital syphilis is not published).
Local resources & officials
Data & references
Local context
San Pablo Avenue threads through the older, quieter edge of Hercules where the city meets Pinole, and the households along that corridor reflect something true about the broader community: most residents here own their homes, carry mortgages on properties valued well above Bay Area median conversations, and live in larger family households than you'd find in most California cities. With nearly six in ten households clearing six figures and a strong majority of adults married, the texture of daily life here is suburban and scheduled, built around two-income routines and school pickups rather than flexible afternoons. Young adults in their late teens and twenties, the years when STI exposure is statistically most common, are often the busiest people in a household, commuting out on I-80 or CA 4, fitting errands into gaps between shifts. When the nearest clinic is a drive from Hercules rather than around the corner, a screening appointment can sit on a mental list for months without happening.
Clinics listed here with extended or weekend hours close that gap more reliably than those operating standard business hours alone. Contra Costa County's STI picture gives residents real reason to treat periodic screening as straightforwardly routine rather than reactive. For a household near Woodfield Park or anywhere along the Foxboro neighborhoods, checking coverage and booking online before the next CA 4 commute is the most practical move available.
Getting there
Hercules scores 14.74/20 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 94553 snapshot
ZIP-level Census figures for the wider 94553 area around Hercules: a single ZIP can span several communities, so they describe the area, not Hercules alone.
Hercules sits in Contra Costa County, ZIP 94553. Local context that shapes where residents test:
Local landmarks
Neighborhoods & communities
Major routes
Nearby cities & towns
Just outside Hercules? 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 Contra Costa 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 Hercules-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 Hercules 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 12 options within a 30-mile drive.
Free at public clinics. Private labs run about $24 for one test and $139 for a full panel; at-home kits are $49+.
Public clinics serve people without insurance, often on a sliding scale.
A full panel typically covers chlamydia, gonorrhea, syphilis, HIV, and hepatitis B and C.
Contra Costa County reported ~428 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.
Most results are ready in about 1–2 days.
No, most STIs have no visible signs, so the only way to know is to test.
Public and community clinics test everyone; several provide LGBTQ-affirming services.
Have a different question? Browse the full STD & STI FAQ library, every question we answer, in one place.