San Jose is the largest city in the Bay Area, with dozens of dental and endodontic offices to choose from. The criteria below are the standards the American Association of Endodontists uses to define modern specialist care — apply them to any office you're considering across San Jose, including ours. The six criteria below are the same standards the American Association of Endodontists uses to define modern specialist care — apply them to any office you're considering, including ours.
These apply to any office in San Jose or anywhere in the Bay Area. Ask the questions before you book.
Two full years of accredited graduate training in endodontics beyond dental school, plus active membership in the American Association of Endodontists. Dr. Kung: UCLA DDS, OHSU MS in Endodontics, active AAE member.
AAE clinical guidelines treat magnification as standard of care for modern endodontics. Many endodontists own a microscope but use it only on select cases. We use a Carl Zeiss surgical microscope on 100% of treatments — required for locating the upper-first-molar MB2 canal (present in ~90% of patients and the single most common cause of late root canal failure).
Cone-beam CT changes the diagnosis or treatment plan in roughly 30% of endodontic cases compared with 2D X-rays alone. Our office has a J. Morita CBCT — no separate imaging appointment, no driving to a radiology center.
About one in eight patients arriving for retreatment leave with a different recommendation — extraction + implant, microsurgery instead of retreatment, or simply monitoring. A specialist willing to tell you when treatment is not the right answer is worth more than one who will treat anything.
Open weekdays until 7 PM and Saturday and Sunday from 9 AM to 3 PM — for major procedures, not only emergencies. One of the only Bay Area endodontic offices that performs scheduled microsurgery on weekends.
Look for review counts above 100, recent reviews in the last six months, and quotes that mention your city or procedure (not just "nice staff"). Dr. Kung: 193+ reviews averaging 4.9★ across Google, Yelp, and Healthgrades, with quotes from patients across Santa Clara County.
Our Sunnyvale office sits just north of San Jose, with most West and North San Jose neighborhoods reaching us in 10–15 minutes. Many of our San Jose patients are referred by general dentists across West San Jose, Willow Glen, Cambrian, and the Stevens Creek corridor for retreatment of older root canals, microsurgery on persistent apical lesions, or evaluation of cracked teeth that need CBCT imaging the general office doesn't have. Tech professionals from Apple, Cisco, Adobe, eBay, PayPal, and Samsung along with Good Samaritan and Regional Medical Center hospital staff make up a large share of our San Jose patient base.
Distance: 4–18 miles depending on neighborhood — 10–25 min. From West San Jose (Santana Row, Westgate, Winchester): Highway 280 north to the Wolfe Road exit, north to Fremont, east to Hollenbeck — 10–12 minutes. From North San Jose / Berryessa: Highway 237 west to 101 north, exit Mathilda south, east to Hollenbeck — 12–15 minutes. From Downtown San Jose or Willow Glen: Highway 880 north or 87 north + 280 west, 15–20 minutes. From Almaden Valley or Evergreen: 25–35 minutes depending on traffic — call us about timing and we'll suggest the best slot for your commute.
Who we see from San Jose: Apple (Mariani / Apple Park-adjacent), Cisco, Adobe, eBay, PayPal, Samsung, Polycom, Zoom, Good Samaritan Hospital, O'Connor Hospital, Regional Medical Center of San Jose, San Jose State University faculty and grad students, San Jose Unified School District teachers, and families across West and North San Jose.
Neighborhoods we frequently see patients from: West San Jose (Westgate, Winchester, Strawberry Park) · Santana Row & Valley Fair · Willow Glen & Lincoln Avenue · Cambrian Park & Branham · Almaden Valley (allow longer drive) · Rose Garden & Naglee Park · North San Jose / Berryessa (Cisco, Samsung) · Downtown San Jose & SoFA · Japantown & Hensley · Evergreen & Silver Creek (allow longer drive)
Use the six criteria: a Specialist Endodontist with a two-year accredited graduate residency, active AAE membership, a surgical operating microscope used on every case, CBCT 3D imaging on-site, willingness to tell you when treatment isn't the right answer, real evening and weekend hours, and 100+ verified local reviews. Dr. Jason Kung meets all six — UCLA DDS, OHSU MS in Endodontics, AAE member, 100% microscope-guided treatment, J. Morita CBCT, Saturday/Sunday hours, and 193+ reviews at 4.9★. San Jose is a big city with many endodontic offices; apply the same six questions to whoever you're considering.
It depends on which part of San Jose. From West San Jose / Cupertino-adjacent neighborhoods (Westgate, Winchester, Santana Row): 4–6 miles, 10–12 minutes via Highway 280 north or Stevens Creek east. From North San Jose / Berryessa: 6–8 miles via Highway 101 north or Highway 237 west. From Willow Glen and Downtown San Jose: 8–10 miles via Highway 880 north or Highway 87 + 280. From Almaden Valley or Evergreen: 12–18 miles. Our office is at 1565 Hollenbeck Avenue, Suite 106, Sunnyvale, with free on-site parking.
Yes — North San Jose and downtown San Jose tech professionals are one of our largest patient cohorts, along with hospital staff from Good Samaritan, O'Connor, and Regional Medical Center. We accept and bill all major PPO plans offered through Bay Area tech employers (Delta Dental PPO, MetLife, Cigna, Aetna, Guardian, United Concordia, Anthem Blue Cross, Premera). Out-of-network billing is straightforward and you receive your full PPO benefits at our standard fees. Most plans cover 50–80% of specialist endodontic care.
Yes. We're open Monday–Friday until 7 PM and Saturday and Sunday from 9 AM to 3 PM — for major procedures, not only emergencies. Weekend root canals and weekend apicoectomy (microsurgery) are both available at standard weekday fees. To our knowledge we are one of the only Bay Area endodontic offices that performs scheduled microsurgery on weekends — useful for San Jose patients with long commutes or weekday childcare constraints.
Dr. Kung conducts full clinical visits — history, diagnosis, treatment explanation, and informed consent — directly in Mandarin (普通话) and English. Spanish-speaking staff are available for scheduling and treatment coordination. The patient-facing website is fully translated into Vietnamese (Tiếng Việt), Spanish (español), Simplified Chinese (简体中文), Traditional Chinese (繁體中文), Korean (한국어), Persian (فارسی), and Hindi (हिन्दी) — covering the major languages spoken across San Jose. 我们说中文, hablamos español.
Yes. We hold emergency endodontic slots every day — including weekends — for San Jose patients in severe pain, with swelling, or recovering from a dental trauma. Call (669) 234-2354 as early in the day as possible. Most root canals are completed in a single visit under our Zeiss surgical microscope, and we triage swelling and trauma cases first.
Yes — West San Jose is one of our closest patient areas. Santana Row, Valley Fair, Westgate, Winchester, Strawberry Park, and the neighborhoods along Stevens Creek Boulevard are 4–6 miles from our office, 10–12 minutes via Highway 280 north or Stevens Creek east. Many West San Jose patients are referred by general dentists in Cupertino, Saratoga, and the Stevens Creek corridor.
From North San Jose tech campuses (Cisco, Samsung, Polycom, eBay): Highway 237 west to Highway 101 north, exit Mathilda Avenue south, then a few blocks east to Hollenbeck. 6–8 miles, 12–15 minutes outside rush hour. From Berryessa or the Alum Rock area: Highway 680 north to Highway 880 north to Highway 101 north — about 18–25 minutes outside rush hour.
Call us, ask the questions, decide. Our Sunnyvale office is 4–18 miles depending on neighborhood from San Jose.
