Tooth pain that blew up over the weekend, a cracked molar before a Monday shift at Tesla or Meta, swelling that ibuprofen isn't touching — Fremont patients can be seen same-day at our Sunnyvale specialist office, about 17–25 minutes south via I-880 or the Dumbarton Bridge. Open Saturday and Sunday, 8 AM to 3 PM. Mandarin spoken in the operatory.
8 AM – 3 PM, every weekend. Specialist endodontist on site — call ahead to confirm.
I-880 S to CA-237, or Dumbarton Bridge to US-101 S. Free parking at 1565 Hollenbeck Ave.
Dr. Jason Kung — practice limited entirely to endodontics. Microscope and CBCT on every case.
Weekend endodontic availability is rare in the East Bay — most Fremont, Newark, and Union City offices are Monday–Friday only. Silicon Valley Endodontics, about 17–25 minutes south via I-880 to CA-237 (or the Dumbarton Bridge to US-101), is open every Saturday and Sunday from 8 AM to 3 PM with a specialist endodontist on site. Call (669) 234-2354 first to confirm a chair.
About 17–25 minutes depending on traffic and neighborhood. From Mission San Jose or Warm Springs, I-880 S to CA-237 W is fastest; from Ardenwood or central Fremont, the Dumbarton Bridge (CA-84) to US-101 S is comparable. We're at 1565 Hollenbeck Avenue, Suite 106, Sunnyvale, with free on-site parking.
If it is safe for you, an over-the-counter NSAID such as ibuprofen or naproxen may temporarily help; follow the package directions and do not combine NSAIDs. Acetaminophen may be an option when NSAIDs are not appropriate. Avoid heat on the affected side and don't chew on that tooth. Call (669) 234-2354 so we can confirm a chair before you leave Fremont. Spreading facial swelling toward the eye or neck, fever, or trouble swallowing or breathing is a medical emergency — go to an ER first (Washington Hospital or Stanford Health Care Tri-Valley).
Yes. Dr. Kung speaks Mandarin and conversational Cantonese, and members of our front-office team speak Mandarin. Many of our Fremont, Mission San Jose, and Milpitas patients prefer to discuss treatment in Chinese — see our dedicated page at svendodontics.com/mandarin-speaking-endodontist-bay-area.
Yes. We send a full diagnostic and treatment summary — CBCT findings, operative notes, and post-op instructions — to your referring dentist within 24 hours so your general dentist can coordinate the final crown and follow-up.
Most dental PPOs cover root canal treatment on the same terms whether it's a weekday or a weekend. We're in-network with most major plans and submit the claim on your behalf — have your insurance card ready when you call.
See also: weekend emergency endodontist (Bay Area) · Fremont location page · Mandarin-speaking endodontist · emergency root canal overview.
We answer the phone every day during office hours. Most Fremont patients are in the chair the same day.
Call (669) 234-2354