Family & Cosmetic Dentist · Lincoln Square, Chicago

Your trusted dentist in Chicago’s Lincoln Square

Family and cosmetic dental care with Dr. Sepi Dashti, DMD, DDS, at 1954 W Foster Ave. Every step explained before treatment. Walk-ins welcome and same-day emergencies.

★★★★★Excellent on Google

Walk-ins welcome. Same-day emergencies. Open select Saturdays. Medicaid and PPO accepted. Kids from age 2. Six languages spoken.

Who we are

A trusted dental clinic in Chicago, IL for the whole family

Sigma Dental Clinic is a family and cosmetic dental office at 1954 W Foster Ave in Lincoln Square, Chicago, led by Dr. Sepi Dashti, DMD, DDS. We care for patients of all ages, from checkups and cleanings to kids’ dentistry, crowns and bridges, teeth whitening, and dental implants.

Dr. Sepi explains every step before treatment, and we see dental emergencies the same day. We’re open Monday to Friday, 10 am–7 pm, and select Saturdays, 9 am–2 pm.

7 pm

Weekday close

Languages spoken

Kids from age 2

APR plans*

*Cherry payment plans, 3–60 months. 0% APR on plans up to 12 months for qualifying applicants.

Treatments

Dental services in Lincoln Square, Chicago

General, cosmetic and restorative dentistry under one roof, for adults and kids.

Meet your dentist

Sepi Dashti, DMD, DDS

Implantologist & Cosmetic Dentist

Dr. Sepi has more than 15 years of experience in dentistry. After more than a decade running a private practice abroad, she expanded her training at the University of Illinois at Chicago, College of Dentistry, and opened Sigma Dental Clinic on Chicago’s North Side.

Her approach is simple: listen first, explain every option, and make care comfortable for every age.

Languages spoken in our office

Your visit

Three simple steps to a healthier smile

No guesswork and no surprises, from the first call to your last visit.

Book in minutes

Book online, call us, or walk in. Same-day emergency visits are available during office hours.

Meet Dr. Sepi

A gentle exam with digital X-rays. Dr. Sepi explains what she sees and every option before anything starts.

Leave smiling

Clear pricing, insurance checked in advance, and flexible payment plans if you need them.

Insurance & payment

Dental insurance and payment options

We check your benefits before treatment, so there are no surprises.

PPO plans

Most major PPO plans are accepted, with help getting the most from your coverage. PPO dentist in Chicago

Medicaid

Illinois Medicaid for children and adults, including Health Choice Illinois plans. Medicaid dentist in Chicago

Medicare Advantage

Some Medicare Advantage plans with dental coverage. Call and we’ll check your benefits. Plans we accept

Payment plans

Monthly payments through Cherry for 3–60 months. 0% APR on plans up to 12 months for qualifying applicants. Payment plans

Reviews

What our patients say

Real reviews from our patients on Google.

      EXCELLENT  
   Based on 181 reviews 
    
 
 
 
   
 
 
      Posted on Google  
   
   Luty hernandez 
 2026-11-02
 
 
 Trustindex verifies that the original source of the review is Google. This is the first dental office that made me feel comfortable. I will definitely recommend this dental office to everyone I know.  They were all wonderful. Thank you very much.
  
 
     Posted on Google  
   
   Hunter Neil 
 2026-10-28
 
 
 Trustindex verifies that the original source of the review is Google. Friendly and professional. Nice clean office.
  
 
     Posted on Google  
   
   Hady Safa 
 2026-10-19
 
 
 Trustindex verifies that the original source of the review is Google. I went to sigma dental with my sister beacuse she was nervous. She had a great experience with this place. The front desk staff was greate and I had good chat with him.
  
 
     Posted on Google  
   
   mahroo safa 
 2026-10-19
 
 
 Trustindex verifies that the original source of the review is Google. I love my new dentist, Dr. Sepi! She is so friendly and welcoming that I felt like I had known her for years. Everyone at the office is really nice and helpful, too. I usually get nervous about going to the dentist, but Dr. Sepi made me feel comfortable and relaxed. I’m really happy I found her and would definitely recommend her!
  
 
     Posted on Google  
   
   Morteza Moradi 
 2026-10-19
 
 
 Trustindex verifies that the original source of the review is Google. I had a great experience at Sigma Dental Clinic! Dr. Sepi took excellent care of me, and the office staff were very friendly and welcoming. The office was also clean. Highly recommend!
  
 
     Posted on Google  
   
   Büşra Erol 
 2026-10-14
 
 
 Trustindex verifies that the original source of the review is Google. The clinic was very clean—I loved that! Dr. Sepi and her assistant were very friendly and provided excellent service. My 4-year-old daughter felt very comfortable. Also, the man at the front desk was extremely friendly. It was a wonderful experience! Thank you!!
  
 
     Posted on Google  
   
   Abbey Gunnell 
 2026-10-13
 
 
 Trustindex verifies that the original source of the review is Google. Incredibly professional, clear, easy to schedule and easy to get to:) Great staff and wonderful Doctor! Everybody is so nice
  
 
     Posted on Google  
   
   Payam Sabouni 
 2026-10-09
 
 
 Trustindex verifies that the original source of the review is Google. Excellent experience! The doctor was gentle and professional, and I didn’t feel any pain during the filling or teeth cleaning. Everything went smoothly, communication was great, and the staff was very welcoming and hospitable. Highly recommend!
  
 
 
  
 
 
   Verified by Trustindex  Trustindex verified that these reviews were published on Sigma Dental Clinic's Google Business Profile. Learn more

Book your visit

Request a dental appointment in Chicago

Book online in a minute, call us, or send us a message. Walk-ins and same-day emergencies are welcome during office hours.

Prefer to write? Send us a message on our contact page →

After hours? Message us on WhatsApp at (773) 506-2033.

Near you

Your dentist near you on Chicago’s North Side

Sigma Dental Clinic is at 1954 W Foster Ave in Lincoln Square, a short trip by car, bike or the #92 Foster bus from these neighborhoods.

Questions

Frequently asked questions

Is Sigma Dental Clinic accepting new patients?

Yes. We welcome new patients of all ages. We see children from age 2, depending on whether your child is ready to cooperate with the dentist. Call (773) 506-2033 or book online.

What are your office hours?

Monday to Friday 10 am to 7 pm and select Saturdays 9 am to 2 pm. We are closed on Sunday. After hours, you can send us a WhatsApp message at (773) 506-2033.

Do you offer same-day emergency dental care?

Yes. Same-day emergencies and walk-ins are welcome during office hours, and you don’t need to be an existing patient. See our emergency dentist page.

What dental insurance do you accept?

We accept most PPO plans, Illinois Medicaid for children and adults, and several Medicare Advantage plans. See the full list of insurance plans we accept.

Do you offer dental payment plans?

Yes. Monthly payment plans through Cherry are available for 3 to 60 months, and qualifying applicants may get 0% APR on plans up to 12 months.

What dental services do you offer?

Dr. Sepi Dashti, DMD, DDS, provides general, cosmetic and restorative dentistry, including cleanings, fillings, crowns, dental implants, dentures, clear aligners, teeth whitening, kids dentistry and Botox. See all dental services.

Where is Sigma Dental Clinic located?

We are at 1954 W Foster Ave, Chicago, IL 60640, and we serve patients from Lincoln Square, Edgewater, Ravenswood, Uptown and nearby North Side neighborhoods.

What languages do you speak?

Dr. Sepi Dashti speaks Farsi and English, and our team speaks Romanian, Spanish, Ukrainian, Russian and English, so many patients can talk about their care in their own language.

Is there parking near Sigma Dental Clinic?

Yes. Free street parking is available near our office at 1954 W Foster Ave, Chicago.

Is the office wheelchair accessible?

Yes. Our entrance is step-free, and the office has a wheelchair-accessible restroom.

Do you offer free consultations?

Yes. We offer a free consultation for dental implants, clear aligners and porcelain veneers, where Dr. Sepi Dashti explains your options and costs before you decide. X-rays and 3D scans are not included; if you need them, we explain the cost and take them only once you agree. Call (773) 506-2033 to book.

Visit us

Visit our Lincoln Square dental office

Sigma Dental Clinic
1954 W Foster Ave, Chicago, IL 60640

Phone: (773) 506-2033
Email: Info@sigmadentalclinic.com

Mon–Fri 10 am–7 pm · Sat 9 am–2 pm · Sun closed

Serving Lincoln Square, Bowmanville, Andersonville, Edgewater, Ravenswood, Uptown and nearby North Side neighborhoods.