Dr. Mark A. Marion

General & Cosmetic Dentistry

111 S. High Street
Zelienople, PA 16063

Call Today! (724) 452-4300
Request an Appointment


We feel fortunate to have received positive feedback from our patients about how Marion Smile Center has helped them. Here are a few of our favorites:

To leave your own review, visit Google Reviews or Yelp.

Marion Smile Center

"Personal care in every phase and the latest in technology."


"Went to the dentist 2 weeks ago for my regular check up. While looking at my x-ray Dr Mark Marion noticed what he thought was an abnormal image on my left carotid artery. He sent the image to my doctor who in turn sent me to have a scan of both carotids. Sure enough my left carotid has a moderate blockage. I had no symptoms whatsoever. Just have to take a baby aspirin and a cholesterol pill and go to Snap. If Mark Marion hadn't noticed this I may have had a stroke or died. He probably saved my life. Thanks Mark. Someone up above must be watching out for me too"


"As always, my dental visit is something I truly look forward to! If my family and friends think I'm crazy to actually 'enjoy' going to the dentist, I just tell them they're going to the wrong dentist! Dr. Marion and his staff are very professional, helpful, friendly and just great people to deal with. I can't ever imagine going to anyone else. If anyone dreads going to the dentist, just 'try them, you'll like them...you'll really like them! Thanks to all of you!"

– Mary

"No wonder Marion Smile Center is consistently ranked one of the best dental practices in the North Hills area of Pittsburgh. Great experience!"

– Jim

"All three of my children receive their dental care through the Marion Smile Center, and have had wonderful experiences. They do not fear going to the dentist, but rather enjoy going to their annual check-ups. The staff is friendly and welcoming and the service is professional and comforting."

– Giovanna

 "We come to Marion Smile Center because we know they are up to date on the latest in dental health and technology. The staff is very knowledgeable and efficient. The hygienist does a fantastic job dealing with my special needs son."

– Debbie

"People laugh when I tell them I look forward to going to the dentist...I tell them that you're all the reason why. I've told them to switch and find out! Thanks...you're all the BEST!"

– Mary

"When a person walks in the front door of the Marion Smile Center, they are greeted by a very friendly, caring staff. Dr. Marion and his staff go out of their way to make their patients feel comfortable. I am very pleased with their service and feel confident I am getting quality care for the purchase of my new dentures, and I am very glad I chose Marion Smile Center and would recommend Dr. Marion to everyone.

They are very helpful regarding payments, etc., and I thank them for being so kind. Spotlessly clean office, and the staff is very helpful and will answer all your questions and make you feel at ease. I can't say enough good about Marion Smile Center, and I am glad I chose this office for all my dental needs."

– Jeanenne 

“Everyone was extremely nice and knowledgeable. They provided services that were not offered at my previous dentist. They also took the time to educate me about teeth and gum health during the visit.

– Karen

"I can honestly say ... I do not mind coming to the dentist! The office is a warm, inviting, relaxing environment. All staff are personable, friendly, and take their time with every patient. I have been coming here for years and would go nowhere else."

– Elana

"Always an awesome experience! From the time you walk in the door, everyone is above and beyond from the receptionist to the dentist. Bravo!"

– Ron

"The staff has always been great to me and my son Elliot. I live 50 minutes away and still make the drive to keep Marion as my dentist! It is a comfortable and clean facility, friendly staff, and I receive expert care. I frequently advise friends in the Zelienople area to seek out their service! Great people!"

– Amy

"Everyone did a fabulous job making my 4 year old daughter's first dental appointment a completely pleasant one. She actually asked if we could go to the dentist the next day!!"  

– Alexis

"Your staff is excellent! They are professional, friendly, helpful and so considerate. I cannot think of one thing that I would change. I have always been pleased with all the dental work that I had done at this office. This is why we have referred so many of our friends and neighbors!"  

– Suzie

"My visit was the result of a crown that came off Friday evening. My regular dentist did not have Saturday hours and I really did not want to wait until Monday to get my crown re-cemented. I searched the internet to find a dentist that would take me on an emergency basis. 

At first I found a dental chain whose registration process for an emergency visit just left me with the impression that I was in for a lot of unnecessary procedures and fees when all I wanted was to have my crown fixed. Then I found the Marion Smile Center website. I was impressed by the friendliness of the woman who answered the phone and scheduled my appointment that day. I was blown away by the office set up and decor when I arrived – it looks like something you would see in a movie set of a Hollywood dentist – beautiful and stylish. 

Rather than the usual request to fill out a bunch of paperwork, I was asked to view a computer screen as health options were displayed and then given an iPad to complete the dental history survey. The doctor and assistant were very friendly and professional. They quickly addressed my issue with the crown and sent me on my way. Even though I was a stranger on an emergency visit all of the staff made me feel like I was a regular customer. Thank you all for a very pleasant experience."

– Robert

"We find the dental care excellent and very thorough. You always have the impression that the care and equipment is up-to-date. The waiting area is kid friendly, and everyone is very helpful."

– Jennifer

"I am always satisfied with the service that I get when I come in! I am always served on time (if not early) and everyone has a smile on their face!"

– Michelle

"You're all wonderful and I'm one happy patient! You would know this by my smile." 

– Mary

"My hygienist was fabulous! She made me feel comfortable and she was sensitive to my feelings of uncomfortableness."  

– Mandy

"I'm a long-time customer and always leave more than satisfied with the care I receive. On a scale of 1-10, with 10 being the best, Dr. Marion and his staff rate a 20. I would never go anywhere else and have recommended him to many friends."

– Mary

"I have been using Dr. Marion since I was a teenager and trust him with mine and my children’s dental care. A very clean office and a very friendly staff. My son is unfortunately getting his first cavity fixed today, but I know he is in good hands. Dr. Marion always takes the time to make sure the job is done right and that you understand the treatment plan."

– Brandy

"Many thanks to Dr. Marion and his staff for providing first-class dental care in a warm, caring environment. His thoughtfulness and generosity is greatly appreciated!"  

– Bill

"I am always well taken care of. I want to feel confident that I have a team to rely on when the unexpected happens. I feel that way with the doctor and his team. I also appreciate the facility itself. It doesn't feel depressed or sterile when you enter. It really helps your mental attitude towards the work you will have done. Thanks guys!"  

– Karren

"The entire staff has always been pleasant and professional and that is why we have referred many of our friends and neighbors to your practice. Keep up the good work!"  

– Lori

"Still smiling after all these years! I have been a patient since Dr. Mark first opened his practice. I know that I will always receive great dental care. The staff really treats you as a valued friend."  

– Lynn

"Dr. Marion and the staff are outstanding and actually a pleasure to go to the dentist office."

– Bill

"Very welcoming, clean, and professional setting. As someone who does not like to visit the dentist, this experience was excellent. They were all very helpful and informative throughout the entire visit"

– Nick 

"My son and I both had appointments with Dr. Marion within the last week. Everyone on staff was very friendly and professional! We were seen on time and my son's cavity was filled at the same appointment!"

– Ashley

"Punctual appointment. Friendly staff. Sparkling clean teeth and a fluoride treatment, too. Marion Smile Center is the best!"

– Michael 

"Had a great experience with my 4 year old. Very friendly, the hygienist explained that everything to my daughter. She even got a prize.”

– Lisa 

"I cracked one of my front teeth and I was seen the very next day (they squeezed me in the schedule) because of the pain. And the next morning I had a root canal. I have had many root canals and I was scared and very apprehensive. I was numbed and did not feel a thing. Dr. Marion is very gentle and calming."

– Cynthia

"Dr. Marion took excellent care of my dental needs when I cracked a tooth. After a thorough examination, he analyzed why it had happened and explained to me what needed to be done to fix the tooth. He performed all the necessary procedures and was always concerned for my comfort.

Dr. Marion is very skilled in all his work, and I especially appreciate his ability to administer Novocain so that the injection doesn't hurt at all (as it used to with my previous dentist). Everyone on the staff at Marion Smile Center is always helpful, congenial, and a pleasure to deal with. Dr. Marion and the Marion Smile Center have my highest recommendation."

– Liz

"I have been visiting Marion Smile Center for over 3 years. Every visit has been a wonderful experience because of the staff and the dentist. Everyone is friendly and cheerful. The facility is very clean and well decorated with appropriate decorations. Their text and e-mail reminders of your appointment make it easy to be there on time. They accommodate you for emergencies, makes you feel like they really do care. There is not one thing I would have them change. I am more than happy to recommend the Marion Smile Center to anyone!"

– Rob

"In the 20+ years that I have been going to the Marion Smile Center, I have NEVER considered going anywhere else. Dr. Marion and his staff are the greatest! Going to the dentist is something I actually enjoy." :)

– Bob

"Very professional, clean and organized. Love the chair-side manner of Dr. Marion and his staff. Very thorough."

– Melanie

"Always friendly office ladies! Dentist is kind and personable. My hygienist was educational."

– Gretchen

"Very friendly and professional, both the hygienist and dentist and support staff. Front office went above and beyond on checking my insurance policy. My teeth in the front look a lot better (whiter) because the hygienist scraped the tartar and plaque off."

– Jim

"Always pleasant people! Thanks for taking good care of my teeth before I head off to college."

– Shannon

"Marion Smile Center is part of my family. I wouldn't consider any other dentist. They are the best so forget the rest!"

– Rosanne

"The Smile Center staff was very thoughtful, professional, and makes you as comfortable as possible. My cleaning was pain free and my appointment was on time."

– Anonymous

"Always a warm and receptive staff. Appreciate the work they do and the professionalism they show."

– Chandler

"It is always a pleasure coming for my checkups. The doctors, assistants, and office staff are all so friendly and welcoming. No complaints on teeth care either – you do a fantastic job."

– John

"Doctor Marion has restored my faith and has eliminated all of my fears of going to the dentist. He and his staff have made going to the dentist a pleasurable experience. Not only does his office have all of the state-of-the-art dental equipment, the atmosphere, and caring for the needs of the patient made all the difference. Whether you want a better smile, whiter teeth, or need to have some dentistry work done, make the first step, schedule a consultation and they will take care of you as if you were family. If you want a bright smile their teeth whitening system is state-of-the-art and I personally highly recommend it to everyone!"

– Zaddock

"Excellent experience from the start. Very courteous and accommodating with scheduling appt, office staff was extremely nice and informative. Dr. Marion was very kind, explained clearly what we were looking at and what needed to be done. So happy he was able to fix Nick up that very same day."

– Anonymous

"Well-trained staff, prompt service, beautiful facility"

– Rose

Marion Smile Center


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