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Walk-In Urgent Care for Mountainside, NJ Residents
Sage Urgent Care is just over the ridge from Mountainside — about 3.8 miles or 8 to 10 minutes via Route 22 or local roads. Open 8 AM to 8 PM, seven days a week, with no appointment needed. We see Mountainside families regularly for everything from sports injuries to flu testing to weekend rashes and stitches.
Getting to Sage from Mountainside
From Mountainside, the fastest route depends on where you're coming from. Residents on the Route 22 corridor can take Route 22 East to the Mountain Avenue exit, then north into Berkeley Heights. From the western side of town near the Watchung Reservation, taking Mountain Avenue or Bonnie Burn Road into New Providence and then onto Springfield Avenue is direct. From the Echo Lake Country Club area, head south through New Providence into Berkeley Heights. Most routes are 8 to 12 minutes depending on time of day.
When Mountainside residents come to Sage
Most of our Mountainside patients walk in for one of these reasons:
- Sports injuries from Governor Livingston, Mountainside athletic programs, and the leagues at Echo Lake Park — with on-site X-ray for suspected fractures
- Sports physicals ($50) and school physicals for Mountainside students
- Pediatric urgent care when pediatricians at Atlantic Health or local groups are closed
- Hiking and outdoor injuries from the Watchung Reservation trails — sprains, cuts, and tick bite evaluation
- Flu, strep, COVID, and RSV testing with rapid same-visit results
- UTI, sinus infections, and ear infections with antibiotics when needed
- Burns and lacerations from kitchen, yard, and grilling accidents
- DOT physicals for Mountainside-based commercial drivers
Mountainside neighborhoods and landmarks we serve
We see Mountainside residents from across the borough — the Deerfield neighborhood, the Birch Hill section, families along Summit Road and New Providence Road, and Echo Lake Country Club area patients. The Children's Specialized Hospital and Atlantic Health's offices off Route 22 are a few minutes from our clinic, and many staff and families from those institutions are our regulars. Mountainside's relatively rural feel means many residents prefer driving the extra few minutes to a true walk-in clinic over searching for primary care availability.
Schools and student athletes from Mountainside
Sage sees student athletes from Governor Livingston High School (which serves Mountainside students), Deerfield School, Beechwood School, and Echobrook School. We also see students from Union Catholic and Watchung Hills Regional. NJSIAA sports physicals are $50, complete on-site with same-day form sign-off — no waiting for forms to be mailed back to the school.
Insurance for Mountainside residents
Sage Urgent Care accepts most major insurance plans used by Mountainside residents — Aetna, Blue Cross Blue Shield Horizon NJ, Cigna, UnitedHealthcare, Medicare, and many others. Self-pay rates are available for uninsured patients: most visits run $150–$200, sports physicals are $50, DOT physicals are $90–$120. See our full accepted insurance list.
Urgent care for Mountainside — FAQs
About 3.8 miles, or 8 to 10 minutes depending on your route. From the Route 22 corridor, take Mountain Avenue exit north. From western Mountainside near the Watchung Reservation, take local roads through New Providence to Springfield Avenue.
No. Sage is fully walk-in, 7 days a week, 8 AM to 8 PM. Just come in any day. For current wait times, call (908) 363-0378 first.
Yes — we accept most major insurance plans including Aetna, Horizon BCBS NJ, Cigna, UnitedHealthcare, Medicare, and many others used by Atlantic Health employees and patients. Specific network status depends on your plan; call to confirm or ask at check-in.
Yes. We complete the New Jersey Department of Education athletic physical form accepted by Governor Livingston, Union Catholic, Watchung Hills Regional, and all NJ schools. Self-pay rate is $50, walk-in, no appointment.
Yes. Sage is open every day of the year from 8 AM to 8 PM, including Saturdays, Sundays, and major holidays.
At 369 Springfield Avenue, Berkeley Heights, NJ 07922, with free on-site parking. From Mountainside, you're about 8 to 10 minutes away depending on which side of town you live on.
Yes — we evaluate tick bites for proper removal, Lyme disease exposure assessment, and prophylactic antibiotics when clinically indicated. The Watchung Reservation is a known tick area; come in any time during open hours if you've had a tick attached for more than 24 hours.
On-site digital X-ray is available during your visit, with same-day reading. No referral or separate appointment needed for sprains, suspected fractures, or other musculoskeletal injuries.
Common services for Mountainside patients
Sage Urgent Care offers a full range of services for Mountainside families: · Illness treatment· Injury treatment· Testing & diagnostics· Wellness & physicals
Walk in any day, 8 AM to 8 PM
No appointment needed. We're at 369 Springfield Avenue in Berkeley Heights — 3.8 miles (8–10 minutes) from Mountainside.
This article is for general information only. If you're experiencing a medical emergency, call 911 or go to the nearest emergency room.