Voted Best of the East Bay 2024 & 2025·Now accepting new patients →
— Contact Us —

Get in touch.

We encourage you to contact us with any questions or comments. Send a message using the form, or reach the practice directly through the channels below — we usually reply within an hour during open hours.

i. — Visit & Hours

Where to find us, when we're open.

When can I drop by?

Open Monday through Thursday — closed Friday through Sunday. The practice sits on Grand Avenue, about a five-minute drive from MacArthur BART.

Opening hours

  • Monday7:00 AM – 5:00 PM
  • Tuesday7:00 AM – 3:00 PM
  • Wednesday7:00 AM – 5:00 PM
  • Thursday7:00 AM – 3:00 PM
  • FridayClosed
  • SaturdayClosed
  • SundayClosed

Same-week openings are available most weeks. Call (510) 350-3937 or send a message.

ii. — The team

The people who'll greet you.

From the front desk to the treatment room, you'll see the same familiar faces visit after visit — most of our team has cared for patients on Grand Avenue for over a decade. Your care is led by co-owners Dr. Jill A. Martenson, DDS — University of the Pacific School of Dentistry, with a General Practice Residency at the University of Colorado — and Dr. David Ma, who trained at the University of Pennsylvania School of Dental Medicine.

The Piedmont Dental By Design team outside the Grand Avenue officeThe Piedmont Dental By Design team · Grand Avenue

— Trusted in the East Bay —

2024 & 2025

Best Esthetic Dentist

Voted Best of the East Bay

2025

Best Dental Practice

Voted Best of the East Bay

G
4.9 / 5

Google Reviews

From 350+ verified patients

30 years

Serving the East Bay

Three decades of preventative, cosmetic & restorative care

iii. — Visit

Take a tour, or schedule your visit.

Experience the practice first-hand. Send us a message, or call us during open hours — most weeks we have same-week availability.

Address1331 Grand Ave, Piedmont, CA 94610
HoursMon & Wed 7–5 · Tue & Thu 7–3