Sonoma's chlamydia rate is 26% lower than the US average. If you're in Cotati, California either starting a new relationship or maintaining ongoing care, you can get tested at public clinics, private labs, or with at-home kits. Each with different trade-offs.
Available testing centers
9 testing options are listed for Cotati, CA. The nearest, Rohnert Park Community Acupuncture, is about 1.7 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.
Rohnert Park Community Acupuncture, in Rohnert Park, welcomes walk-ins for STI screening under its federally qualified health center charter, which ties fees to a patient's income on a sliding scale. A single visit can cover syphilis, gonorrhea, and chlamydia testing without an appointment needed.
Tests offered
Fees & payment
Petaluma Health Center in Rohnert Park tests for HIV, syphilis, gonorrhea, chlamydia, herpes, and hepatitis C on a sliding-scale fee open to everyone, with same-visit treatment for bacterial infections, appointments required, and full clinical care delivered in Spanish.
Spanish speakers receive every service (testing, treatment counseling, PrEP management, hepatitis C care) in Spanish without relay or intermediary. That operational fluency means medication instructions, adherence counseling, and follow-up planning are communicated directly by the clinical team, reducing the gap between what's prescribed and what's understood.
Petaluma Health Center carries both PrEP and PEP as standing clinical services, meaning prescribing, monitoring, and adherence counseling happen here. Not through a separate provider. For someone without a primary care relationship who needs ongoing HIV prevention, that makes this clinic a self-contained source rather than a coordination problem.
Hepatitis C treatment at Petaluma Health Center is a direct clinical service: after a positive antibody test, confirmatory RNA testing and antiviral treatment are managed here. Initiating direct-acting antivirals through the same team that diagnosed the infection keeps the treatment timeline intact and removes the hand-off delay that interrupts care.
Languages
English, Spanish
Tests offered
Serves
Care services
Prevention services
Fees & payment
Listing verified Nov 2025 · Source: CDC NPIN + HRSA
Bridge Campus in Santa Rosa carries federally qualified health center status, meaning fees scale with income so cost is never a barrier to care. Walk-ins are welcome for STI screening covering syphilis, gonorrhea, and chlamydia.
Tests offered
Fees & payment
Providence Medical in Santa Rosa requires an appointment, so scheduling ahead determines what a single visit can accomplish: testing for HIV, syphilis, gonorrhea, chlamydia, herpes, hepatitis B and C, and TB, with same-visit treatment for bacterial infections and a sliding-scale fee for everyone.
Providence Medical prescribes both PrEP and PEP, which means ongoing HIV prevention and urgent post-exposure coverage live in the same chart: no separate provider to locate, no gap between testing and the prescription that follows.
Many clinics confirm a hepatitis C infection and stop there, leaving treatment to a specialist months down the line. Providence Medical carries treatment on-site, so a positive result moves directly into a management plan without the wait a referral would otherwise introduce.
The basic four-infection panel (HIV, syphilis, gonorrhea, chlamydia) leaves herpes and hepatitis B and C unaccounted for. Providence Medical tests for all of them, so a single appointment can surface infections that a narrower screen would simply miss.
Languages
English
Tests offered
Serves
Care services
Prevention services
Fees & payment
Listing verified May 2026 · Source: CDC NPIN
Parkway Campus in Santa Rosa carries federal qualification as a community health center, which means STI screening costs scale with what patients actually earn. Syphilis, gonorrhea, and chlamydia testing are available on a sliding-fee basis. No single fixed price applies to everyone who walks in.
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 2 miles away; if you'd rather skip the trip, an at-home kit ships to Cotati, 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 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 Sonoma 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.
301 East Street, Healdsburg, CA 95448
CMS-certified lab
401 Bicentennial Way, Santa Rosa, CA 95403
CMS-certified lab Accredited · College of American Pathologists
461 7th Street West Suite 3, Sonoma, CA 95476
CMS-certified lab
Source: CMS CLIA registry (Provider of Services), Q1 2026. Federal public records: active CLIA-certified laboratories near Cotati. 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, 891 primary-care, OB-GYN, infectious-disease and other clinicians have a CMS practice record within 30 miles of Cotati. They may be able to evaluate symptoms or order a confidential STD panel during a regular visit, and 333 offer telehealth.
Karin Kerk, MD
Internal medicine · 5900 State Farm Drive, Rohnert Park
Laura Martin, MD
OB-GYN · 5900 State Farm Drive, Rohnert Park
Margo Budman, MD Telehealth
Family medicine · 5300 Snyder Lane, Rohnert Park
Noel Serrano, MD Telehealth
Internal medicine · 446 Arrowood Drive, Santa Rosa
Julie Clark, MD Telehealth
OB-GYN · 1550 Professional Drive, Petaluma
Masato Sugiura, DO
Family medicine · 1550 A Professional Drive, Petaluma
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 Cotati, 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.
0.2 mi Raleys
1.3 mi
1.3 mi 
1.4 mi Showing the 4 closest pharmacies to Cotati, 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 Cotati, 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 Sonoma County, the county that includes Cotati, compare with California and U.S. averages, based on the most recent 2023 surveillance data. An estimated ~26% of residents are aged 15–34 (ACS), the age group with the highest reported chlamydia and gonorrhea rates nationally.
#25 of 58 California counties for chlamydia, a higher rate than 57% of the state
| Infection | Sonoma County | California | United States |
|---|---|---|---|
| Chlamydia | 362.6 1,747 cases ▼ 26% | 491.1 | 492.2 |
| Gonorrhea | 103.4 498 cases ▼ 46% | 190.2 | 179.5 |
| Syphilis (P&S) | 14.9 72 cases ▼ 9% | 16.3 | 15.8 |
| Syphilis (early) | 15.8 76 cases ▼ 17% | 19.1 | 16 |
| Syphilis (late/unknown) | 13.5 65 cases ▼ 71% | 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 Sonoma County, chlamydia has risen from 269.2 to 362.6 per 100,000 (35%), gonorrhea has fallen from 131.5 to 103.4 per 100,000 (21%), and P&S syphilis has risen from 13.1 to 14.9 per 100,000 (14%).
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 Sonoma County.
Local HIV snapshot
Sonoma County HIV care continuum (2023)
Sonoma County recorded 9.1 new HIV diagnoses per 100,000 (2023), against 14.9 statewide and 13.7 nationally. Among Sonoma County residents living with HIV, 86.8% are in care · 83.4% 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 Sonoma County tests for syphilis.
Source: CDC NCHHSTP AtlasPlus, 2023 (county-level congenital syphilis is not published).
Local resources & officials
Data & references
Local context
Cotati skews more toward owners than renters, but with well over a third of households paying monthly rent at levels that consume a real share of take-home pay, the cost of daily life here has a way of crowding out anything that feels optional, and routine screening can feel optional right up until it isn't. That tension matters most for younger adults still forming relationships and building routines, who make up a substantial slice of the population and account for the bulk of STI diagnoses statewide. The city's workforce participation is high, and most households are either dual-income or leaning that way to cover those rent figures.
Average household size here runs larger than the California norm, which means scheduling anything (a clinic visit, a quiet afternoon errand) involves coordinating around other people's hours. Cotati's relatively high share of higher-earning households doesn't erase cost as a factor, rent at this level compresses discretionary spending for plenty of people, including those who look fine on paper. The options on this page include low- and no-cost testing, so whether someone is heading toward Rohnert Park for another errand or already near Old Redwood Highway, the practical path to getting screened is shorter here than in most of Sonoma County.
Getting there
Cotati scores 12.77/20 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 94931 snapshot
ZIP-level Census figures for the wider 94931 area around Cotati: a single ZIP can span several communities, so they describe the area, not Cotati alone.
Cotati sits in Sonoma County, ZIP 94931. Local context that shapes where residents test:
Local landmarks
Neighborhoods & communities
Major routes
Nearby cities & towns
Just outside Cotati? 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 Sonoma 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 Cotati-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 Cotati 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.
Possibly, Santa Rosa, CA is close; compare it by distance against Rohnert Park Community Acupuncture.
Medicaid generally covers STD testing, and public clinics test for free regardless of coverage.
Yes, public clinics in the area offer free or low-cost testing.
Local options test for Chlamydia, Gonorrhea, Syphilis, Herpes, Hepatitis A, Hepatitis B, Hepatitis C, Rapid HIV, a full panel covers the common ones.
About 363 cases per 100,000 residents (2023), below the California average.
PrEP (HIV-prevention medicine for HIV-negative people) is available locally, any provider can prescribe it.
In California, people under 18 can consent to confidential STD testing and treatment on their own.
Yes, at-home kits ship to 94931; you collect a sample, mail it back, and get results in about 2–5 days.
They can, swollen groin nodes can accompany herpes, syphilis, or early HIV, so mention them when you test.
HPV and hepatitis B vaccines prevent those infections, ask a provider if you're due.
Have a different question? Browse the full STD & STI FAQ library, every question we answer, in one place.