Oakland
222 14th StreetLower Level 01
Oakland, CA 94612
Mon–Fri 8:30AM–6:00PM
Same-day emergency access
(510) 452-7770 East Bay Endodontic Specialists
You were right to call.
Here, your tooth
gets exactly
the care
it deserves.
— Dr. Priya O'Callaghan, Founder · 28 years in practice
Dr. Priya O'Callaghan has led this practice for 28 years — a practice that has cared for East Bay patients since the 1980s. Nobody wants to need an endodontist. When you do, what makes the difference is whether someone takes the time: to explain what is happening, to answer your questions, to make you feel like a patient and not a procedure. Every doctor here does that. It is why 98% of patients arrive by referral.
Dr. Priya O'Callaghan Portrait — available post Jun 7 photoshoot
28 years in practice
4.7★ on Yelp 4.88★ Google · 594 Reviews 98% Referral-Based Same-Day Emergency · 4 Locations
Practice Statistics
0 ★ Yelp Rating #1 Endodontist in Oakland
0 Locations Oakland · Berkeley · El Cerrito · Hayward
0 Specialist Doctors All practising across 4 East Bay locations
0 ★ Google Rating 594 reviews · 4.88 avg · 4 locations
Featured Treatment Available at all 4 locations
GentleWave root canal.
One visit. Exceptional outcomes.
GentleWave reaches the parts of your tooth that traditional files physically cannot. It cleans the entire root canal system in ways instruments alone never could. I've used every system in 28 years of practice. Nothing comes close.
"Field-changing. That's how I would describe it." We make GentleWave available to every patient at our 4 locations — not as an upgrade, but as the standard. Every doctor in this practice has been the standard of care here since 2019. None of them would go back.
Learn About GentleWave
96.6% of patients report mild to no pain after the procedure — Sonendo, data on file. The pain most patients fear going in is the infection they arrived with. Not the treatment.
"I'm not saying that to sell you a procedure — I'm saying it because it changes what's possible for your tooth."
— Dr. Priya O'Callaghan, Founder96.6% of patients report mild to no pain after their GentleWave procedure. The pain most patients fear going in is the infection they arrived with — not the treatment.
Sonendo, data on file
Founder — Dr. Priya O'Callaghan
28 years. Her word.
28 years. Her word.
Her conviction.
Dr. Priya has lead Endospecialists since 1998 and has built the East Bay's only large independent endodontic practice — four locations, a referral network of ~200 dentists, and 98% of patients arriving by referral. That's not marketing. That's 28 years of honest results.
She trained at the University of Southern California. She works in the clinic four days a week. When something goes wrong, she picks up the phone — because it is her practice and her responsibility.
Meet Dr. Priya"She was precise, focused and meticulous, but above all, she was warm and attentive to any of my reactions."
Independent Practice
"We're one of the only large private practices around. We're staying that way — because we don't want a bank telling us what to do for you."
Endospecialists is independently owned. We have not sold to private equity. That's a choice Dr. Priya has made deliberately, over 28 years, because she believes the treatment room should answer to the patient — not to a board of investors.
We have no investors. Every treatment decision Dr. Priya and her team make serves the person in the chair. When there's a problem, you call Dr. Priya — not a patient services line.
Seven things patients say
matter most — and why
we built for them.
482 patients wrote reviews. 72 said 'highly recommend' without being asked. These eight things are what their words point to — the reasons they came anxious and left converted.
- 01 Full Technology Suite — Every Location GentleWave, EdgeEndo laser, CBCT imaging, and surgical microscopy at all four offices. Not available at one flagship — available everywhere, every day.
- 02 Same-Day Emergency Access Pain cases are seen the same day across all four locations. Oakland is open Saturdays, 9–5. For genuine Sunday emergencies, the team comes in. That's not a policy statement — that's how this practice has operated for 28 years.
- 03 Independently Owned The only multi-location endodontic practice in the East Bay not backed by private equity. That's a structural fact with direct clinical consequences.
- 04 Trained to One Standard Dr. Priya trained at USC. Dr. Kim completed his endodontics residency at Columbia. Every doctor in this practice works under the same clinical philosophy she has applied for 28 years: when you get up from that chair, it should be the best that could have been done.
- 05 GentleWave — Standard of Care Since 2019 We don't offer GentleWave as an upgrade. We use it on every patient at every location — since 2019. 92%+ complete treatment in a single visit. 97%+ experience complete healing within 12 months.
- 06 28-Year Referral Network Approximately 200 referring dentist relationships, built over nearly three decades through personal contact and clinical results alone. No advertising budget built this.
- 07 4-Location Scale, Private Values Large enough to absorb volume and offer same-day emergencies. Small enough to make every case a matter of personal accountability.
Our Team
Specialist doctors.
Specialist doctors.
One practice.
Dr. Priya founded Endospecialists in 1998 and built the team around a single standard: when you get up from that chair, it should be the best that could have been done. Every doctor in this practice works to that benchmark — across all four East Bay locations, under one independently owned practice.
USC School of Dentistry Columbia Endodontics
Patient Reviews
What patients say
What patients say
after GentleWave.
Endospecialists is rated 4.7 stars across Google and Yelp and ranked #1 endodontist in Oakland. The reviews below are verified patient reviews — unedited.
★★★★★
"I had to travel overseas and had a tooth issue just the day before international travel. The Hayward office was amazing to fit me in last minute. Dr. O'Callaghan was just amazing. She explained every step of the procedure."
Google Review 2024 · Hayward
★★★★★
"Great office. Wonderful staff. Easy, comfortable experience. Quick, too! I absolutely recommend this office."
Google Review 2025 · Hayward
★★★★★
"I was referred by my primary dentist. The doctor was very kind and gentle. She explained everything in great detail and even drew a little diagram for me."
Google Review 2025 · Hayward
Elfsight review widget — 4 Google Business Profiles + Yelp · 4–5★ filter · auto-updates (install post-launch)
For Referring Dentists
Refer with confidence.
Refer with confidence.
Your reputation is safe here.
Endospecialists has maintained referral relationships for 28 years — nearly 200 practices across the East Bay. Dr. Priya converts 80% of dentists who meet her in person. This page is her attempt to give you the same conversation without requiring a dinner.
GentleWave at every location. Specialist-to-specialist communication after every case. No unsolicited general dentistry — ever.
Four Locations
East Bay endodontic care —
Main Office
Lower Level 01
Oakland, CA 94612
View Location
Suite 200
Berkeley, CA 94704
View Location
Suite 100
El Cerrito, CA 94530
View Location
Suite 350
Hayward, CA 94541
View Location
East Bay endodontic care —
close to where you are.
Lower Level 01
Oakland, CA 94612
Berkeley
2121 Milvia StreetSuite 200
Berkeley, CA 94704
Mon–Fri 8:30AM–6:00PM
Same-day emergency access
(510) 524-5005El Cerrito
10600 San Pablo AvenueSuite 100
El Cerrito, CA 94530
Mon–Fri 8:30AM–6:00PM
Same-day emergency access
(510) 237-3000Hayward
22320 Foothill BoulevardSuite 350
Hayward, CA 94541
Mon–Fri 8:30AM–6:00PM
Same-day emergency access
(510) 538-4300