What Patients Say
Patients describe mixed experiences at this practice. Some praise the staff as kind, calm, and nice, and note a convenient location. However, several reviews describe serious concerns about billing clarity, with patients reporting unexpected bills and unclear pricing information. Multiple reviews also describe frustration with how treatment decisions were communicated and implemented, and some patients report difficulty reaching management with concerns.
Billing confusion
38% of reviews
Several patients report unexpected bills and say pricing was not clearly explained before treatment.
Treatment decisions unclear
25% of reviews
Some patients describe significant treatment changes that were not properly discussed or approved beforehand.
Kind and calm
25% of reviews
Some patients describe the staff as kind, calm, and nice.
Source: riverrockdentalfamily.com · Most recent review September 2026
About
Tiffany Diem Tu Ngo is a general dentist in Austin, Texas, practicing at Polished Smiles of Round Rock, East 51 Austin Dental, St. Joseph Health Services of RI, Aikahi Smile Designs, and River Rock Dental - Mueller. She attended UC Berkeley for her undergraduate studies and earned her dental degree from Tufts University in Boston, followed by advanced training in the Advanced Education in General Dentistry residency.
Her procedures span the full range of general dentistry, including preventive care, routine cleanings, fillings, root canals, crowns and bridges, implants, veneers, cosmetic dentistry, Invisalign, dentures, oral surgery, and kid-friendly dentistry. She focuses on delivering comprehensive dental care and creating a comfortable patient experience, with the goal of helping patients feel more confident about their smiles while motivating them to improve their oral health. Ms. Ngo has participated in dental mission trips to Honduras and Haiti and recently relocated to Austin with her husband. She speaks English.
Insurances Accepted
Most common in Texas
Others
Insurance coverage can vary by location and plan. Confirm directly with the provider's office when you schedule.