Dr. Rex Hoang, DMD, Washington DC Dentist Since 1990
Dr. Rex Hoang, DMD, is a general dentist and the owner of DC Dental Spa in Foggy Bottom, Washington, DC. A University of Pennsylvania dental graduate, he has practiced in DC since 1990 and treats dental implants, cosmetic, periodontal, and general dentistry in one office. He is a third-generation dentist, an American Dental Association member, and holds fellowship training in implant and laser dentistry.
New patients get an exam, prophylaxis, x-rays, and fluoride for $125 (for patients with no periodontal disease).
Dr. Hoang at a glance
- Full name
- Rex H. Hoang, DMD
- Role
- Owner and dental director, DC Dental Spa
- Dental school
- University of Pennsylvania School of Dental Medicine
- Practicing in Washington, DC since
- 1990
- Focus areas
- Dental implants, cosmetic dentistry, periodontal care, Invisalign, root canals, extractions, emergency dentistry
- Advanced training
- Fellowship in implant dentistry; associate fellowship, World Clinical Laser Institute; Invisalign provider
- Memberships
- American Dental Association
- Continuing education
- 70 to 80 hours a year
- Languages
- English, Vietnamese
- Other languages
- Our team includes people who speak Spanish and other languages. Ask when you call.
- Office
- 730 24th St NW, Suite 9, Washington, DC 20037. Free on-site parking.
How Dr. Hoang decides what treatment to recommend
For any significant case, Dr. Hoang presents three treatment plans and lets the patient choose. A basic option, a middle option, and a premium option, each with the cost, the timeline, and the trade-offs laid out.
“I let the patient be the boss.”
The order of priorities never changes.
- 1First, health: no infection, nothing that will get worse if left alone.
- 2Second, function: you should be able to eat and chew without thinking about it.
- 3Third, how it looks. Cosmetics matter, and they come after the first two.
Story time: An 87-year-old patient in a wheelchair came in with failing teeth. Dr. Hoang laid out three plans: a full implant restoration at around $35,000, a snap-in denture supported by implants at around $16,000, and full extractions with a conventional denture. The patient picked the middle plan. It fit his budget and let him eat again, and the choice was his.
We don't judge what they can afford.
Dr. Hoang treats government workers, university staff, young professionals, retirees, and families from every part of the city, and every plan starts from what that person needs.
The comment new patients make most often, after a first visit: “I wish I would have come here sooner.”
Training and experience
Dr. Hoang is a third-generation dentist. Both of his sons are dentists too, practicing in Denver.
He earned his Doctor of Dental Medicine at the University of Pennsylvania School of Dental Medicine, then moved to Washington, DC, and opened his practice in 1990.
Year one meant calling every household in the phone book from A to Z to introduce himself. The practice grew from there, mostly through referrals from patients who sent their coworkers and family members.
Over more than 35 years, he has added the training that lets one office handle nearly everything:
- Fellowship training in dental implants, covering placement, bone grafting, and sinus lifts
- Associate fellowship, World Clinical Laser Institute, for laser-assisted surgery and small restorations
- Advanced training in cosmetic and periodontal dentistry
- Invisalign provider
Dr. Rex still puts in 70 to 80 hours of continuing education every year. The most recent was an implant surgery seminar in May 2026.
Dr. Hoang refers out fewer than 2% of cases. Implants, gum treatment, root canals, extractions, Invisalign, veneers, and full-mouth reconstruction all happen at 730 24th Street, with one dentist who knows your history from the first visit on.
What Dr. Hoang treats
- Dental implants, including full-mouth implants and sinus lifts
- Cosmetic dentistry: veneers, bonding, whitening
- Invisalign clear aligners
- Periodontal care and gum disease treatment
- Root canals and extractions
- Emergency dentistry
- Restorative dentistry, including full-mouth reconstruction
- Preventive care and dental cleanings
- Sleep apnea testing and oral appliances
The office uses a WaterLase dental laser for gum surgery and small cavities. Ask about it at your exam, and Dr. Hoang will tell you whether it applies to your case.
MISSION DENTISTRY
AND COMMUNITY WORK
Dr. Hoang has taken his skills abroad on volunteer dental trips to Vietnam (twice), Laos, and the Dominican Republic, working alongside volunteer dentists and surgeons. The days ran to around 20 patients each, mostly extractions and gum disease treatment, plus implants, sinus lifts, and bone grafts in the Dominican Republic. Between patients, the team taught families how to care for their teeth with what they had at home.
Over those trips, the group treated close to 1,000 people.
Closer to home, for years Dr. Hoang ran a free emergency dental day in DC once a year, open to anyone in pain. It ended around 2010 when the line stretched out of the building and management asked him to stop.
Outside the office
Dr. Hoang grew up in Evansville, Indiana, and finished high school and college in California, graduating from UC Irvine. He came back east because he missed having four seasons.
He has played guitar, piano, and drums since age 12 and will tell you himself that he is not good at any of them. He just loves music.
In high school, he made the varsity wrestling team as a freshman and went undefeated at 98 pounds. He still trains in taekwondo and Vovinam, a Vietnamese martial art.
He loves animals and lives with his family in Northern Virginia.
What patients say about Dr. Hoang
“Dr. Hoang is a pro. He runs a professional practice.”
“Dr. Hoang was incredibly friendly and knowledgeable. He took the time to explain everything.”
“I didn't feel rushed. He took his time and explained everything to me.”
“Dr. Hoang personally called me (and left a message) the day before my appointment.”
Google Reviews
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Published work and professional listings
- American Dental Association: Dr. Rex Hoang, member dentist, Washington DC
- Patient education articles: Dr. Hoang has written more than 50 articles on topics from tooth infections to peri-implantitis and root canal recovery for Your Dental Health Resource
MEET DR. HOANG ON VIDEO
Frequently asked questions about Dr. Hoang
What kind of dentist is Dr. Hoang?+
Dr. Hoang is a general dentist with advanced fellowship training in dental implants and laser dentistry, plus advanced training in cosmetic and periodontal care. He practices as a general dentist in Washington, DC, and handles implants, gum treatment, root canals, extractions, and cosmetic work in his own office.
Where did Dr. Hoang go to dental school?+
Dr. Hoang earned his DMD at the University of Pennsylvania School of Dental Medicine. He completes 70 to 80 hours of continuing education each year, including implant surgery courses.
How long has Dr. Hoang been practicing in Washington, DC?+
Dr. Hoang opened his practice in Washington, DC, in 1990 and has treated patients in Foggy Bottom for more than 35 years.
Does Dr. Hoang place dental implants himself?+
Yes. Dr. Hoang places and restores dental implants in his own office, including bone grafts and sinus lifts. Patients do not need a referral to a separate surgeon.
Does Dr. Hoang see nervous patients and dental emergencies?+
Yes. Dr. Hoang sees dental emergencies, with a $160 emergency visit that includes an intraoral X-ray, or a no-charge consultation to talk through options first. Nervous patients can expect a full explanation of every step and a treatment plan they choose themselves.
Is Dr. Hoang accepting new patients?+
Yes. New patients receive an exam, prophylaxis, x-rays, and fluoride for $125 (for patients with no periodontal disease). The office has free on-site parking, and the phone line is answered 24 hours a day.
Content reviewed by Dr. Rex Hoang, DMD. Last updated .