Same-Day Illness Care
Walk-In Illness Treatment in Berkeley Heights, NJ
Sage Urgent Care provides same-day walk-in treatment for common illnesses — colds, flu, COVID, strep, UTI, sinus infections, ear infections, and more. Open 7 days, 8 AM to 8 PM. No appointment needed. Most insurance accepted.
When you're sick, the last thing you want is to wait days for a primary care appointment. Sage Urgent Care evaluates and treats common illnesses the same day, with on-site rapid testing for flu, COVID, RSV, and strep — so you leave with a diagnosis, a treatment plan, and prescriptions filled (when appropriate) the same visit.
Our two board-certified emergency-medicine physicians, Vadim Fradlis, DO and Jacob Silberstein, MD, treat the full range of acute illness from typical respiratory infections to UTIs to skin infections to gastrointestinal issues. We follow current evidence-based guidelines on antibiotic stewardship — meaning we prescribe antibiotics when there's clinical evidence of bacterial infection, not reflexively for every cough or sore throat.
How illness evaluation works at Sage
Walk-in illness visits at Sage follow a consistent process designed to get you a diagnosis and a treatment plan in a single visit — not a referral to come back later.
Check-in and triage: A nurse takes vitals and a brief symptom history. For respiratory illness, we order a multi-pathogen panel before the provider sees you — so results are ready during the exam, not after. One nasal or throat swab simultaneously checks for flu A, flu B, COVID-19, and RSV. Results in about 15 minutes.
Provider evaluation: The physician does a focused physical exam. For suspected strep, a rapid throat swab is added — results in about 5 minutes. For suspected UTI, a urinalysis runs during the visit. For any cough with fever or productive sputum, a chest X-ray can be done the same visit.
Diagnosis and treatment plan: If testing is positive for bacterial illness, antibiotics are prescribed and sent electronically to your pharmacy before you leave. Viral illness — which accounts for most respiratory infections — gets a supportive care plan: what to take, what to expect, and when to escalate. Most illness visits are complete in 30 to 45 minutes.
Antibiotic stewardship: We do not prescribe antibiotics reflexively. Both Sage providers follow current IDSA and AAP guidelines on antibiotic stewardship — antibiotics are prescribed when there is clinical or laboratory evidence of bacterial infection, not based on symptom pattern alone. This protects you from unnecessary side effects and helps preserve antibiotic effectiveness.
Illness Treatment services we provide
Same-day walk-in care for the conditions below. Each link goes to a detailed page with symptom information, what to expect at your visit, and frequently asked questions.
Respiratory & ENT illness
Infections & other illness
Why Sage for illness treatment care
Same-visit rapid testing
Flu, COVID, RSV, and strep all tested with rapid swabs — results in about 15 minutes, treatment plan before you leave.
Emergency-medicine trained physicians
Both Sage providers completed EM residencies. We're comfortable separating common illness from the few situations that need higher-level care.
Antibiotic stewardship
We don't prescribe antibiotics reflexively. When you do need them, we prescribe the right one for the diagnosis based on current guidelines.
On-site lab and X-ray
Urinalysis, basic blood work, and chest X-ray available the same visit — no second trip to a separate facility.
Open 7 days, including weekends
Most illness comes on at inconvenient times. We're open every day of the year, 8 AM to 8 PM.
Care your way
Walk in any time — or call (908) 363-0378 ahead for wait time. We respect your time.
Illness Treatment Care FAQs
Most common acute illnesses — colds, flu, COVID, RSV, strep throat, sinus and ear infections, UTIs, pink eye, allergies, mild gastrointestinal illnesses, skin infections, tick bites. We do not treat life-threatening emergencies (chest pain, stroke symptoms, severe trauma) — those need the ER.
Only if you have evidence of bacterial infection. Most respiratory illnesses are viral and don't respond to antibiotics. We follow current guidelines on antibiotic stewardship, which means avoiding antibiotics when they won't help.
Most illness visits take 30 to 45 minutes from check-in to walk-out, including any testing. Times vary with wait and complexity. Call ahead at (908) 363-0378 for current wait times.
Yes — rapid testing for flu, COVID, RSV, strep, plus urinalysis and basic lab work. Most results during your visit, with no separate trip to a lab.
Yes. We prescribe antibiotics, antivirals, asthma inhalers, antihistamines, anti-nausea medication, and most common medications. Controlled substances and most chronic-disease management belong with primary care.
Most fevers can be evaluated at urgent care. Go to the ER for very high fever (above 104°F) that won't come down, fever with stiff neck, fever with significantly altered mental status, fever in newborns under 3 months, or fever with severe headache or chest/abdominal pain.
Yes — Sage offers walk-in pediatric urgent care for non-emergency illness, 7 days a week, 8 AM to 8 PM. Children under 6 months should typically see their pediatrician or the ER for serious illness.
Most major plans — Aetna, Horizon BCBS NJ, Cigna, UnitedHealthcare, Medicare, and many others. Self-pay rates run $150–$200 for most illness visits.
Need illness treatment care today? Walk in
Sage Urgent Care is open 7 days a week, 8 AM to 8 PM. No appointment needed. Most insurance accepted.
This article is for informational purposes only. If you're experiencing a medical emergency, call 911 or go to the nearest emergency room.