About Smile LA

A dental visit built around your comfort

Smile LA Downtown Modern Dentistry is a Financial District practice offering general, cosmetic, implant and Invisalign care. Five doctors, one office, and technology chosen to make appointments shorter and easier to sit through.

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Google Rating 4.9
Based on 475 Reviews
Read Our Reviews →
Why Smile LA

The visit comes first

Most people arrive a little tense. We plan the appointment around that: what is happening now, what the options are, and what each one involves before anything begins.

Imaging and scanning let us see clearly the first time, so there is less guesswork, fewer return visits, and more of the natural tooth left intact. The technology supports the care our doctors provide. It does not replace it.

“Modern tools help us work more precisely and efficiently, which often means shorter appointments, less discomfort, and more conservative treatment that preserves your natural teeth.”
Dr. Kourosh Yousefzadeh, D.D.S.
Smile La Staff member
The Team / DTLA Office
Mission and Vision
Our Mission

Care you understand, in a place you trust

To give every patient who walks into our Downtown office treatment that is precise, comfortable and clearly explained. We diagnose carefully, treat conservatively, and make sure you know what is happening and what it costs before it begins.

Our Vision

The practice DTLA sends its friends to

To be the practice Downtown Los Angeles recommends by name: a place where modern imaging, digital planning and a calm chairside manner are simply the standard, not the upgrade.

Our Approach

Four things we hold to

The same standard applies whether you are here for a cleaning or a full smile makeover.
01

Comfort by design

Digital scanning instead of impression trays. Soft-tissue lasers for gum work. Quieter, shorter appointments wherever the technology allows it.
02

Explained before it starts

You see your own images on the screen, hear the options in plain language, and know the cost before treatment begins.
03

Conservative first

Precise diagnosis means we can treat earlier and remove less. Keeping the natural tooth is always the preferred outcome.
04

One office, one team

General, cosmetic, implant and periodontal care happen in the same Downtown office, so your records and your plan never leave the building.
Meet our Team

The doctors who treat you

Five doctors, one Downtown office. General and cosmetic dentistry, periodontics and implants, oral and maxillofacial surgery, endodontics, and comprehensive family care.
01
Dr. Kourosh Yousefzadeh seated in the office lobby beside a white Samoyed
Dr. Kourosh Yousefzadeh, D.D.S.
General, Cosmetic and Implant Dentistry
Specializes in cosmetic dentistry with a focus on natural-looking results, and in advanced implant restorations. He builds each plan around the patient in the chair rather than a standard sequence.
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02
Studio portrait of Dr. Razmik Galustian in black scrubs
Dr. Razmik Galustian, D.D.S.
Periodontics and Dental Implants
Handles the practice’s gum treatment and implant surgery, and teaches part-time in the periodontology program at the USC School of Dentistry.
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03
Studio portrait of Dr. Llely Duarte in a white coat
Dr. Llely Duarte, D.D.S.
Comprehensive and Preventive Care
Sees patients of all ages for preventive and comprehensive treatment, and is known in the office for a gentle touch and a calming presence.
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04
Studio portrait of Dr. Nariman Saadat in a dark suit and blue patterned tie
Dr. Nariman Saadat, D.D.S., M.D.
Oral and Maxillofacial Surgery
Board certified oral and maxillofacial surgeon. Earned his bachelor’s degree at UCLA, completed dental school at the UCLA School of Dentistry, and finished his medical and surgical training at Oregon Health and Science University.
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05
Portrait of Dr. Fatemeh Arabpour in a purple top against a plain white wall
Dr. Fatemeh Arabpour, D.D.S.
Endodontics
Endodontist. Earned her D.D.S. degree at the University of Southern California, where she went on to complete her specialty training in endodontics, and also holds a dual doctoral degree earned in the United Arab Emirates.
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Technology

What we use, and why

Every piece of equipment here earns its place by making a visit shorter, clearer or more comfortable.

See All Technology →
01

3D Cone Beam CT

A three-dimensional view of bone, nerves and sinuses for planning implants and surgery.
02

iTero digital impressions

A fast, accurate 3D scan of your teeth. No goopy impression trays required.
03

CAD/CAM restorations

Crowns and restorations designed digitally for a precise fit, often in fewer visits.
04

Soft-tissue laser

Precise gum treatment with less bleeding, minimal swelling and faster healing.
05

Intraoral camera

Close-up images on the screen beside you, so you see exactly what we see.
06

Digital and panoramic X-rays

Sharp, instant images at significantly less radiation than traditional film.

Inside the practice

Financial District, DTLA
The Pacific Mutual building entrance at 523 West Sixth Street, brass plaques beside the doors and a patient walking in
523 West Sixth Street
A patient handing a tablet back to a Smile LA team member across the granite front desk
Checking In
Smile La Staff member
The Team
The reception desk and waiting area, with black armchairs against a dark panelled wall
Waiting Area
A patient waiting on the black sofa in the Smile LA lounge
The Lounge
The corridor between operatories, looking past the front desk
Front Desk and Corridor
A treatment operatory with the original exposed brick wall and an arched window
Operatory
An operatory equipped with a surgical microscope beside the exposed brick wall
Surgical Microscope
Dr. Kourosh Yousefzadeh treating a patient chairside
Chairside
Two team members at the reception desk of the Downtown Los Angeles office
Office Tour

See the office before you arrive

A short walk through reception, the operatories and the imaging room on the second floor at 523 W 6th Street.

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Trust Index

What patients report back

4.9
Average of 475 Google Reviews
Collected on Google for Smile L.A. Downtown Modern Dentistry.
“
Came in for the first time to deal with a chipped tooth I needed fixed immediately. The office is really clean and features the latest tech. The team is very professional and nice.
Ryann Lauckner
Google Review
“
Smile LA is the best dental experience I have ever had. Everyone in the office is very friendly and welcoming. Dr. K is extremely knowledgeable and provides the best advice and treats you with care.
Joe Keb
Google Review
“
I chipped my bondage tooth two days before my interview. The staff was very friendly and accommodated me the SAME day (was a new patient)! My tooth looks even better than it did before it broke.
Trevor Robinson
Google Review
Next Step

One visit to see where you stand

A first appointment covers imaging, a look at what is happening now, and a plan you can read. No treatment starts before you understand it.

Schedule Appointment Call (213) 570-8775
523 W 6th St #202
Financial District, DTLA