Best orthodontists in Rancho Cucamonga, CA: graded by phone audits
We phoned 13 Rancho Cucamonga orthodontist offices after hours and graded what a patient hears. Here is who picked up the standard, and who did not.
What is the best orthodontist in Rancho Cucamonga? The best orthodontist in Rancho Cucamonga depends on what matters most to you, but Best Ortho ranks Rancho Cucamonga practices on one thing we can measure: how they handle a patient's phone call after hours. 8 of 13 graded Rancho Cucamonga offices got an A- or better. The practices with the strongest grades are listed below.
Top-graded orthodontists in Rancho Cucamonga
Listed by after-hours grade, then by name. Practices with the same grade are not ranked against each other.
- Shawn KimAfter-hours grade: A+
8209 Rochester Ave # 101, 91730-0744
- 7945 Haven AveAfter-hours grade: A
7945 Haven Ave, 91730-3074
- Collin TsaiAfter-hours grade: A
11863 Lazio Court, 91701-9022
- Dr. William HarrisonAfter-hours grade: A
10630 Town Center Drive, 91730-8600
- Jeffrey HwangAfter-hours grade: A
8463 Haven Ave, 91730-3845
- Robert StockdaleAfter-hours grade: A
10399 Foothill Blvd Ste 102, 91730
- Valerie JenkinsAfter-hours grade: A
10601 Church St #104, 91730
- William HarrisonAfter-hours grade: A
10630 Town Center Dr, 91730-6805
- Maurice Firouz OfficeAfter-hours grade: C+
9560 Baseline Road, 91701-6435
- Braces by Dr. Emily Hung DDS, MS, Orthodontist - In Rancho CucamongaAfter-hours grade: C
11328 Kenyon Way, 91701
Last audited: September 25, 2026
Why a phone-audit grade?
Reviews tell you about the chair. They rarely tell you what happens when you call at 9 p.m. because a bracket is poking your child's cheek. We test that part, the same way every time, so you can compare offices on it.
How we grade Rancho Cucamonga orthodontists
Best Ortho places mystery-shopper calls to orthodontist offices after hours and grades the greeting a patient actually hears, from A+ to F.
- Calls run between 10 p.m. and 4 a.m. Mountain Time.
- A call is graded on whether the greeting names the practice, gives hours or a clear next step, and offers an emergency path. See the full scale on our methodology page.
- Calls that never connect (no answer, busy, failed) are left ungraded. They are not scored as a failure.
What the grades mean (and what they do not)
| Grade | What the caller heard |
|---|---|
| A+ | The practice is named, hours or a next step are given, and there is an emergency path |
| A | The practice is named, with hours or a callback offered (or a live answering service that identifies the practice) |
| A- | The practice is named, but the next step is limited |
| B+ | A generic but clear practice mailbox |
| C+ to C- | An unnamed or generic mailbox, almost no greeting, or unintelligible audio |
| D | The call reaches a different business than the one listed |
| F | The line is disconnected, the mailbox is not set up, or there is no working office number |
A grade measures the after-hours phone experience. It does not measure clinical skill. Use it as one signal alongside consultations, credentials and reviews.
What a Rancho Cucamonga patient can do with a grade
- Shortlist two or three offices from the top of the list.
- Book a consultation at each, and ask what to do if something breaks after hours.
- Treat the grade as one signal. It measures the phone experience, not clinical skill.
Orthodontist near me in Rancho Cucamonga
Looking for an orthodontist near you in Rancho Cucamonga? Use the directory search to filter by neighborhood or ZIP code, then compare grades before you book a consultation. Browse Rancho Cucamonga orthodontists
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Frequently asked questions
Who is the best orthodontist in Rancho Cucamonga?
There is no single best orthodontist for everyone. Best Ortho grades Rancho Cucamonga practices on after-hours phone handling, and the top-graded offices are listed at the top of this page. Book consultations with two or three before you decide.
How does Best Ortho grade orthodontists?
We place mystery-shopper phone calls after hours and grade the greeting from A+ to F. The grade reflects whether the practice is named, whether hours or a next step are given, and whether there is an emergency path.
Does an A+ mean the best orthodontic care?
No. An A+ means the after-hours phone experience was excellent. It does not measure treatment outcomes or clinical skill, so use it alongside consultations and credentials.
Why is my orthodontist not graded?
Some calls do not connect (no answer, busy, or a failed call), and those are left ungraded rather than scored as a failure. 13 of 15 Rancho Cucamonga offices have a grade today.
How often are Rancho Cucamonga grades updated?
The most recent Rancho Cucamonga call was on September 25, 2026.
Can a practice pay for a better grade?
The Recommended badge is not for sale.