In Yolo County, reported gonorrhea runs about 43% lower than the US average. Whatever the reason, if you're in Davis, California, for a first test or a routine screening, consider cost, speed, and convenience for your options. Read on for details.
Available testing centers
11 testing options are listed for Davis, CA. The nearest, Davis Sexual Health Clinic - DaSH, is about 1.0 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.
Davis Sexual Health Clinic, DaSH, operates on a sliding-scale fee structure, accepts Medicaid and most insurance, and tests for HIV (rapid), gonorrhea, chlamydia, and syphilis with same-visit treatment for bacterial infections; walk-ins are welcome and Spanish is spoken on-site.
DaSH carries Spanish-language capacity directly within the clinic and extends interpretation services to other languages, a standing resource that matters for anyone who navigates medical decisions in a language other than English. Health history, dosing instructions, and prevention counseling land in full rather than filtered.
DaSH prescribes DoxyPEP, doxycycline taken after a potential bacterial STI exposure, alongside both PrEP and PEP, covering the full current range of biomedical HIV and bacterial STI prevention tools. Uninsured patients have a dedicated pathway for PrEP access, and HIV medical management is handled on-site.
Languages
English, Interpretation Services Available for Non-English Languages, Spanish
Tests offered
Serves
Care services
Fees & payment
Listing verified Jan 2026 · Source: CDC NPIN
CommuniCare OLE in Davis runs on a sliding scale accepting Medicaid, Medicare, and private insurance, with donations accepted for those who prefer that route. Walk-ins are welcome for HIV, syphilis, gonorrhea, chlamydia, and herpes testing, with same-visit treatment for bacterial infections and full care delivered in Spanish.
CommuniCare OLE conducts testing, results, counseling, and treatment entirely in Spanish. Not through an add-on service, but as the operational language of care. That means clinical conversations about PrEP, TB, and STI treatment happen with the same fluency and depth as any other visit at the clinic.
Many STI testing sites hand off prevention prescribing to primary care or infectious disease practices. CommuniCare OLE writes and manages both PrEP and PEP in-house, so prevention doesn't require a separate provider relationship or a second appointment elsewhere.
Substance-use treatment is available at CommuniCare OLE alongside STI testing and care, which means a patient managing both concerns doesn't need to coordinate between separate clinics or providers to keep either thread of treatment on track.
Languages
English, Spanish
Tests offered
Serves
Care services
Prevention services
Fees & payment
Listing verified Feb 2026 · Source: CDC NPIN
A community safety-net federally qualified health center about 9 miles from Davis. Sliding-scale STD testing and care are typical here, call ahead to confirm the exact panel and pricing.
Tests offered
Fees & payment
Family Wellness Center - Unity Building in Woodland welcomes walk-ins for STI screening without an appointment. Federally qualified standing ties fees to a sliding income scale, keeping syphilis, gonorrhea, and chlamydia testing within reach for patients across the income spectrum in a single visit.
Tests offered
Fees & payment
Planned Parenthood Mar Monte in Woodland brings family planning depth to STI care, testing for HIV, gonorrhea, chlamydia, syphilis, and herpes on a sliding-scale fee accepted alongside Medicaid, Medicare, and private insurance. With same-visit treatment for bacterial infections and Spanish spoken on staff.
Spanish-language care at Planned Parenthood Mar Monte is staffed directly, not patched in through a scheduling request. Non-Spanish languages are also available through interpretation services, meaning clinical conversations (exposure history, medication instructions, follow-up plans) move at the speed of care rather than the speed of logistics.
Title X designation at this clinic means confidential family planning services for minors aren't a policy preference, they're a federally protected operational requirement. That status also anchors the sliding-scale structure across the full patient population, regardless of insurance or income documentation.
Going without PrEP while waiting for a referral to sort itself out means weeks of unprotected exposure that can't be walked back. Planned Parenthood Mar Monte prescribes and manages PrEP directly, and PEP is available for post-exposure prevention. No secondary appointment at a separate facility required.
Languages
English, Interpretation Services Available for Non-English Languages, Spanish
Tests offered
Serves
Care services
Prevention services
Fees & payment
Listing verified Aug 2025 · Source: CDC NPIN
A community safety-net federally qualified health center about 9 miles from Davis. Sliding-scale STD testing and care are typical here, call ahead to confirm the exact panel and pricing.
Tests offered
Fees & payment
Hansen in Woodland earned its federally qualified health center designation by tying STI screening fees directly to patient income. Syphilis, gonorrhea, and chlamydia testing are available on a sliding scale, meaning what you pay reflects what you earn. No flat rate, no single price for everyone.
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 Davis, 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 Yolo 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.
2000 Sutter Place, Davis, CA 95616
CMS-certified lab Accredited · College of American Pathologists
Room 3137 Tupper Hall, Davis, CA 95616
CMS-certified lab
910 Riverside Pkwy Suite 60, West Sacramento, CA 95605
CMS-certified lab Accredited · College of American Pathologists
Source: CMS CLIA registry (Provider of Services), Q1 2026. Federal public records: active CLIA-certified laboratories near Davis. 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, 1,785 primary-care, OB-GYN, infectious-disease and other clinicians have a CMS practice record within 30 miles of Davis. They may be able to evaluate symptoms or order a confidential STD panel during a regular visit, and 899 offer telehealth.
John Li, MD Telehealth
Internal medicine · 684 Hutchinson Drive, Davis
Andrea Sherman, MD
OB-GYN · 1955 Cowell Boulevard, Davis
Marie Tumusok, MD Telehealth
Internal medicine · 635 Anderson Road, Davis
Arfan Din, DO Telehealth
Family medicine · 2035 Lyndell Terrace, Davis
William Tucker, MD Telehealth
Family medicine · 4647 2nd Street, Davis
Christopher Swales Telehealth
Family medicine · 2330 West Covell Boulevard, Davis
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 Davis, 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.
0.4 mi 
1.1 mi Davis Pharmacy
1.3 miShowing the 3 closest pharmacies to Davis, 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 Davis, 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 Yolo County, the county that includes Davis, compare with California and U.S. averages, based on the most recent 2023 surveillance data. An estimated ~49% of residents are aged 15–34 (ACS), the age group with the highest reported chlamydia and gonorrhea rates nationally.
#20 of 58 California counties for chlamydia, a higher rate than 66% of the state
| Infection | Yolo County | California | United States |
|---|---|---|---|
| Chlamydia | 416.7 919 cases ▼ 15% | 491.1 | 492.2 |
| Gonorrhea | 101.6 224 cases ▼ 47% | 190.2 | 179.5 |
| Syphilis (P&S) | 11.3 25 cases ▼ 31% | 16.3 | 15.8 |
| Syphilis (early) | 5.4 12 cases ▼ 72% | 19.1 | 16 |
| Syphilis (late/unknown) | 31.3 69 cases ▼ 33% | 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 Yolo County, chlamydia has risen from 409.4 to 416.7 per 100,000 (2%), gonorrhea has fallen from 142.8 to 101.6 per 100,000 (29%), and P&S syphilis has fallen from 15.2 to 11.3 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 Yolo County.
Local HIV snapshot
Yolo County HIV care continuum (2023)
Yolo County recorded 11.5 new HIV diagnoses per 100,000 (2023), against 14.9 statewide and 13.7 nationally. Among Yolo County residents living with HIV, 79.4% are in care · 71.3% 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 Yolo County tests for syphilis.
Source: CDC NCHHSTP AtlasPlus, 2023 (county-level congenital syphilis is not published).
Local resources & officials
Data & references
Local context
West Covell Boulevard cuts through a Davis where most households rent rather than own, and where typical rents run well above what many college towns elsewhere see. That cost pressure is real for the large share of residents who are young adults still forming relationships and partnerships, people whose incomes haven't caught up to Yolo County rents and for whom an out-of-pocket clinic visit can feel like one more line item that gets weighed carefully. With fewer than four in ten households married and an average household running close to three people, Davis is full of shared houses, rotating roommates, and overlapping social circles, exactly the kind of environment where routine STI screening matters quietly in the background.
Getting to the options listed on this page means planning around I-80 or heading out along East Covell Boulevard depending on where in East Davis, Central Davis, or South Davis you're starting from. Many of those trips are a genuine drive, not a short errand, which means scheduling around work or class hours is the practical reality for most people here. Yolo County's STI rates reflect a population that skews heavily toward the years when transmission risk is highest, and Davis, with its rental-heavy, high-density household structure, sits squarely inside that pattern.
Getting there
Davis scores 14.81/20 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 95616 snapshot
ZIP-level Census figures for the wider 95616 area around Davis: a single ZIP can span several communities, so they describe the area, not Davis alone.
Davis sits in Yolo County, ZIP 95616. Local context that shapes where residents test:
Local landmarks
Neighborhoods & communities
Major routes
Nearby cities & towns
Just outside Davis? 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 Yolo 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 Davis-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 Davis 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.
The closest is Davis Sexual Health Clinic - DaSH (1 mi); 11 options are within 30 miles.
Medicaid generally covers STD testing, and public clinics test for free regardless of coverage.
Public clinics nearby offer free HIV 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 417 cases per 100,000 residents (2023), below the California average.
In California, people under 18 can consent to confidential STD testing and treatment on their own.
PrEP (HIV-prevention medicine for HIV-negative people) is available locally, any provider can prescribe it.
Yes, most chlamydia infections cause no symptoms, so screening is the only reliable way to catch it.
You self-collect a sample at home, mail it in, and view results online, no clinic visit needed.
Likely yes, if you were past the window period; otherwise retest, and keep up routine screening with new partners.
Have a different question? Browse the full STD & STI FAQ library, every question we answer, in one place.