949-368-0193 Book Appointment

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.

Schedule Your Visit Explore Our Services
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

Dr. Michael Welcome

General/Cosmetic Dentist

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

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

Family Services →

Dental Implants

Permanent tooth replacement solutions that look and feel natural

Dental Implants →

Cosmetic Dentistry

Veneers, whitening, bonding, and complete smile makeovers

Smile Enhancement →

Invisalign®

Clear, removable aligners for discreet teeth straightening

Aligners Info →

Restorative Dentistry

Crowns, bridges, fillings, and complete dental restoration

Dental Restorations →

Emergency Dental

Fast relief for dental emergencies and urgent situations

Emergency Dentist →

Preventative Care

Regular checkups and professional cleaning for optimal oral health

Checkup Info →

Teeth Whitening

Safe, effective whitening for a radiant smile

Whitening Services →

Oral Surgery

Expert surgical procedures for complex dental needs

Surgery Options →

Our Caring Staff

Dedicated professionals ensuring your comfort and care

Chelsey, Office Manager at Mountainside Dental RSM

Chelsey

Office Manager

Alex, Assistant Office Manager at Mountainside Dental RSM

Alex

Assistant Office Manager

Haley, Registered Dental Hygienist at Mountainside Dental RSM

Haley

Registered Dental Hygienist

Tamara, Registered Dental Hygienist at Mountainside Dental RSM

Tamara

Registered Dental Hygienist

Roya, Registered Dental Assistant at Mountainside Dental RSM

Roya

Registered Dental Assistant

Special Offers

New Patient Specials

Most Popular

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

Dental Implants Consultation

FREE Consultation
  • 3D CT Scan & Evaluation
  • Personalized Treatment Plan
  • Insurance & Financing Review
Book Consultation

Invisalign® Consultation

FREE Assessment
  • Digital Smile Simulation
  • iTero 3D Scanner
  • Treatment Timeline Estimate
Start Your Journey
Our Office

Modern Comfort & Technology

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

Reception Area
Treatment Room
Modern Equipment
Comfort Amenities
Dental Technology
Patient Care Area
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."

JM

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."

LG

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."

CN

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."

KC

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
  • Sunbit

Our Membership Plans

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

Adult Complete

14 & older
$36 /month
OR
$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
OR
$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?

Visit kleer.com and enter code: HB4N

Enroll Now Call for Help

Benefits begin immediately upon enrollment

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

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

Ready to Transform Your Smile?

Schedule your appointment today and experience the Mountainside Dental difference

Book Online Now Call 949-368-0193

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