Excellence in Dental Care for Rancho Santa Margarita

It is our goal to provide healthy smiles and pleasant dental experiences for all residents of Rancho Santa Margarita, CA and surrounding areas. Serving Rancho Santa Margarita, Mission Viejo, and Las Flores since 2021.

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Insurance Accepted

5-Star Reviews

Same Day Emergency

2021

Established

7,000+

Family Patients

5.0

Google Rating

100%

Satisfaction

Meet Our Team

Our Expert Dentists

World-class dental professionals dedicated to your oral health

Dr. Michael Welcome

General/Cosmetic Dentist

USC School of Dentistry graduate, 28+ years in RSM, proud father of 5 children

Dr. Eugene Chang

General Dentist

Columbia University DDS, Harvard implant training, Pinhole Surgical Technique® certified

Our Services

Comprehensive Dental Care

From routine cleanings to complete smile makeovers, we offer a full range of dental services

Family Dentistry

Comprehensive dental care for patients of all ages, from children to seniors

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Dental Implants

Permanent tooth replacement solutions that look and feel natural

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Cosmetic Dentistry

Veneers, whitening, bonding, and complete smile makeovers

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Invisalign®

Clear, removable aligners for discreet teeth straightening

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Restorative Dentistry

Crowns, bridges, fillings, and complete dental restoration

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Our Caring Staff

Dedicated professionals ensuring your comfort and care

Chelsey

Office Manager

Alex

Assistant Office Manager

Haley

Registered Dental Hygienist

Tamara

Registered Dental Hygienist

Roya

Registered Dental Assistant

Celest

Registered Dental Assistant

Special Offers

New Patient Specials

New Patient Special

$ 179 Cleaning, Exam & X-Ray

Comprehensive dental cleaning
Meticulous oral health examination
Standard x-rays

*For new patients without insurance and in the absence of periodontal disease. Payment must be made in cash.

Claim Offer

Free Consultation

FREE

Dental Implant Consultation
Invisalign Assessment
Cosmetic Smile Analysis
Second Opinion Welcome

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Professional Whitening

$ 299 $599 value

Take-Home Touch-Up Kit
Custom Whitening Trays
Sensitivity Protection

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Employee Partner

Applied Medical Employees

Enjoy exclusive benefits including free whitening trays, $50 in-office credit, referral rewards, and priority scheduling.

View Your Benefits →

Our Office

Modern Comfort & Technology

Experience dentistry in a state-of-the-art, welcoming environment

Patient Reviews

What Our Patients Say

5.0 ★★★★★ from 146+ Google Reviews

★★★★★

"Everyone was super nice here. I got an appointment within 3 days of calling. I showed up a day early on accident and they still offered to see me on the wrong day so I didn't have to come back the next day."

Jackie M.

Happy Patient

★★★★★

"I had a regular dental appointment at the RSM Mountainside dental, but once I was there, I was told I had to have a crown. I'm normally very anxious about dental work, but the staff was really amazing and made me feel so comfortable."

Laura G.

Verified Patient

★★★★★

"They're very professional, always on time. The quality of the work is great, I've had an implant and a crown and no issues. They are upfront on the costs and very reasonable."

Carl N.

Long-time Patient

★★★★★

"Amazing people, they're all so incredibly friendly and helpful! They make going to the dentist not scary at all. The office is beautiful & clean & comfortable - all the equipment is very modern."

Kelly C.

Happy Patient

Our Partners

Trusted by Leading Organizations

Financing & Insurance

Making Quality Dental Care Accessible

We accept most PPO insurance plans and offer flexible payment options

Accepted Insurance Plans

We accept most PPO plans. No HMO plans accepted.

Aetna Ameritas BCBS Cigna Delta Dental Guardian Humana MetLife United Healthcare Delta Dental Medicare Advantage PPO

Payment Options

We accept multiple forms of payment:

Cash
Checks
Credit Cards
CareCredit
Cherry
Sunbit

Mountainside Dental Savings Plan

For patients without insurance, we offer affordable in‑house savings plans

Adult Complete

14 & older

$36 /month

$432 /year

Saves $291/year

Professional cleanings (2/year)
Regular exams & screenings (2/year)
Routine x-rays (as needed)
Emergency exam (1/year)
10% off other procedures

Perio Plan

14 & older

$58 /month

$696 /year

Saves $406/year

Professional cleanings (2/year)
Regular exams & screenings (2/year)
Routine x-rays (as needed)
Emergency exam (1/year)
10% off other procedures

Ready to Enroll?

Enroll online at kleer.com — enter code: HB4N

Enroll Now Call for Help

30‑day money‑back guarantee • Benefits begin immediately

Visit Us

Conveniently Located in Rancho Santa Margarita

Address

29941 Aventura, Suite B
Rancho Santa Margarita, CA 92688

Office Hours

Monday: 8AM - 5PM
Tuesday: 8AM - 5PM
Wednesday: 8AM - 5PM
Thursday: 8AM - 5PM
Friday: Closed

Contact

Phone: 949-368-0193
Email: frontofficersm@mountainside-dental.com

✓ Free Parking ✓ Wheelchair Accessible ✓ Near Rancho Santa Margarita Town Center

Frequently Asked Questions

Everything new patients want to know about our Rancho Santa Margarita office.

Is Mountainside Dental Rancho Santa Margarita accepting new patients?

Yes. We welcome new patients at our Rancho Santa Margarita office. Call 949-368-0193 or use the appointment form on this page to get started.

What insurance does the Rancho Santa Margarita office accept?

We accept most PPO plans and no HMO plans. Plans we work with include Aetna, Ameritas, BCBS, Cigna, Delta Dental, Guardian, Humana, MetLife, and United Healthcare. Call our RSM office to verify coverage for your specific plan.

What are the Rancho Santa Margarita office hours?

Our RSM location is open Monday through Thursday from 8 AM to 5 PM. We are closed on Friday and weekends.

Do you offer emergency dental care in Rancho Santa Margarita?

Yes. Emergency care is one of our services at the RSM office. Call us first thing in the morning at 949-368-0193 to ask about same-day availability for tooth pain, broken teeth, or other urgent issues.

Does the Rancho Santa Margarita location offer Invisalign?

Yes. Invisalign is listed in our specialty orthodontics services at the RSM office. Call to schedule an Invisalign consultation.

Does the Rancho Santa Margarita location offer dental implants?

Yes. Dental implants are among our restorative services at the RSM office.

Where is the Rancho Santa Margarita office located and is parking available?

We are at 29941 Aventura, Suite B, Rancho Santa Margarita, CA 92688. Free patient parking is available and the office is wheelchair accessible.

What financing and payment options do you offer?

We accept cash, checks, credit cards, and CareCredit, Cherry, and Sunbit financing with 0% APR options for qualifying patients.

Do you offer a membership plan for patients without insurance?

Yes. Our Kleer-powered Mountainside Dental Savings Plan at the RSM office is $36/month or $432/year for the Adult Complete plan (ages 14+). It includes two professional cleanings, two exams, routine x-rays, one emergency exam per year, and 10% off other procedures. A Perio plan for gum disease is also available at $58/month or $696/year. Enroll at kleer.com using code HB4N.

How do I schedule an appointment at the Rancho Santa Margarita office?

You can book online through our appointment scheduler, call the RSM office at 949-368-0193, or submit the appointment request form on this page.

Ready to Transform Your Smile?

Schedule your appointment today and experience the Mountainside Dental difference

Book Online Now Call 949-368-0193