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Photos of the office, including a street level view of the address.

Dr. Robert De Marois

Check before you go. This office is listed as taking Denti-Cal, but we could not confirm it in the current state Denti-Cal provider listing. Call and ask whether it is taking Denti-Cal patients.

Insurance and Coverage

Denti-Cal

Not confirmed This office is listed as taking Denti-Cal but we could not find it in the current state listing. That is not the same as a no, so call and ask.

Medi-Cal plan type

Fee for service. Medi-Cal dental also runs through managed care plans in Sacramento and Los Angeles counties, and the state list we check does not cover those. If you are on a dental plan card rather than plain Medi-Cal, ask the office whether they take your plan.

Other insurance

Not known. This list is built around Medi-Cal dental, so it does not track private plans. Ask the office which ones they take.

What Patients Said

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• Nurses and staff have all been great but The last two doctors that I have seen in the last two years are by far the worst I’ve ever seen they make me feel like they are only there to punch the clock!!! and don’t really care about helping me!

  Emmitt Bruno 1 out of 5 · 2026-03-24

• Very tricky facility. They act very kind, but do their very best to make you feel unwelcome. The intake nurse is condescending and the "application" process is gruling, and then the doctor was dismissive and abusive.

  They do everything they can to instigate an argument by asking questions with sarcasm and accusations. The goal is to upset you so they can claim it's not a good fit or you go away in your own -- all while they smile. They treat you horribly and then when you're justified in being upset they use it against you.

  "FRTH is required by law to prioritize American Indians for medical services. Non-Native patients can be eligible, but they must go through a screening process. "

  There is reports of a toxic environment for non native patients and for doctors.

  It's a horrible place pretending to be kind. Read the reviews and look for patterns.

  Jane Miha 1 out of 5 · 2025-09-30

• Dr chima is one of the best doctors there kind caring and considerate does his job very well thank you Dr chima for the great care

  William Jones 5 out of 5 · 2026-06-30

Reviews are quoted word for word and belong to the people who wrote them. We do not edit them and we cannot remove them.

Office Details

Address

2145 5th Avenue
Oroville, CA 95965

Phone

(530) 534-3793

Degree

DDS

Provider number

1639286990

Other Address on File

We also have one more address on file for this provider besides the one above. Call first to find out which one to go to.

• 2145 5th Avenue, Oroville

What to Ask When You Call

Say you have Medi-Cal dental and ask if they are taking new patients. If the answer is yes, ask how soon you can be seen and what to bring. Take your Medi-Cal card and a photo ID.

If English is hard for you, Medi-Cal pays for an interpreter and the office can set one up. Ask for it when you book.

Ask This Office for an Appointment

Leave your name and number. If this office takes requests through this site, it goes straight to them and they call you. If not, our team calls the office for you and rings you back with what they said.

Please do not put health details here. The office will ask what you need when they call. Is this your office? Get patient requests sent to you.