Tanja de Marsche, D.M.D.

Tanja de Marsche, D.M.D.
Roberts & de Marsche Orthodontics 39 Franklin Corner Road Lawrenceville, NJ 08648

Tanja de Marsche, D.M.D.

Philadelphia Orthodontists - Drs. Roberts and deMarsche - Experienced and board certified, located in Philadelphia, Pennsylvania PA and Lawrenceville, New Jersey NJ.

Dr. Roberts graduated three times from the University of Pennsylvania, receiving a BA in 1972, a DMD degree in 1976, and a Certificate in Orthodontics in 1978. He became “Board Certified” in 1993 and is a Diplomate of the American Board of Orthodontics. Dr. Roberts was, for eight years, Associate Professor in the Department of Graduate Orthodontics at Temple University School of Dentistry. He has authored and published articles in the orthodontic literature and has lectured internationally for over 30 years. Dr. Roberts is a former President of Mercer Dental Society where he was Program Chairman (10 years) and continues as web site editor.

Dr. de Marsche studied on the undergraduate level at the University of Pennsylvania and Georgetown University. She graduated from the University of Medicine and Dentistry of New Jersey in 1979 and received a Certificate in Orthodontics from the University of Pennsylvania in 1981. She became Board Certified in 1995, and is a Diplomate of the American Board of Orthodontics. Dr. de Marsche was Clinical Assistant Professor of Orthodontics at Temple University for many years. Dr. de Marsche is a former President of Mercer Dental Society and maintains an active involvement in Mercer Dental Society projects and activities.
Primary Specialty


Gender Female
Affiliations Diplomate of the American Board of Orthodontics.
Payment Options We are participating providers with many dental insurance providers, including the following …

Aetna US Healthcare
Met Life
United Concordia

Easy Payment Plans: We offer easy and affordable no-interest payment options that offer you affordable monthly payments.

Flexible Spending Accounts: If you work for a company that provides a flexible spending account.
Services Drs. Roberts and de Marsche are well-established orthodontists in Philadelphia, Pennsylvania and Lawrenceville, New Jersey. The doctors and experienced staff are committed to excellence in orthodontic care. They will explain all treatment options at your free initial consultation. They also offer affordable fees and payment plans. If you are looking for an orthodontist in Philadelphia or Lawrenceville, you should consider these services offered by Drs. Roberts and de Marsche…

Aesthethic Dentistry
Clear and Metal Braces
Invisible Braces and Invisalign
Invisalign Teen Braces
Cosmetic Dentistry
Dental Smile Makeovers

See our “Beautiful Smiles Photo Gallery” for before and after pictures of our smile makeovers…

Orthodontic Treatment “Befores and Afters” for Adults
Orthodontic Treatment “Befores and Afters” for Children
Invisalign Orthodontics “Befores and Afters”
Orthognathic Surgery “Befores and Afters”

For straighter teeth and a healthy smile, you should see an experienced orthodontist. Philadelphia orthodontists, Roberts and de Marsche are trustworthy professionals and have the credentials to prove it. Contact a Philadelphia Orthodontist today.
Consumer Feedback
(14 Reviews)
4.5 star average for Service
4.5 star average for Environment
5 star average for Expertise
5 star average for Staff
3.5 star average for Recommended
5 star average for Value
View All 14 Reviews Add a Review
Recent Reviews
My friend's daughter got her braces here, so I visited Dr. DeMarsche based my friend's recommendation. My experience was less favorable, however. With orthodontics, I recommend shopping around...
Prior to seeing Dr. DeMarsche, our dentist/orthodontist had recommended we pull several of my daughter's baby teeth out (because they weren't coming in 'fast enough') with a very strong sales pitch for why we should go with them for orthodontics. Turned off, I turned to Dr. DeMarsche, who said that was just a lot of "unnecessary dental work; come back in 6 months". We did... and when we did, she took x-rays, took molds of my daughter's teeth, and said she needed to extract EIGHT baby teeth bc they're not coming in fast enough. And I got the whole sales pitch for how urgent it is to start right away. Because she was the 2nd doctor to tell me this, and bc my friend had recommended her, I went with it and signed to start treatment. Then I realized I got sucked into her sales pitch... how would my daughter eat/look with 8 teeth missing?! I went to see ANOTHER recommended orthodontist (free consult) who said 8 extractions is NOT necessary; the baby teeth will come out on their own, we should start after she gets more adult teeth. During the coming months we had a family medical crisis AND my daughter's baby teeth fell out one by one on their own. At the onset of our medical crisis, which is just a few weeks after our first visit I called DeMarche's office and told them right away that we had a family medical emergency, I cannot make the payments, we need to stop. The office told me "Don't worry; your balance is 0; everything will be alright." Surprisingly, for the next several months, we received EOB's (explanation of benefit) from insurance showing that DeMarsche was getting paid for monthly office visits WE NEVER HAD. For braces we NEVER GOT. I called again and they insisted we're not being charged for anything, our balance is ZERO, don't worry. (meaning, your insurance is paying us, we won't bill you.) It was only after few more calls (months later) that they actually stopped charging and taking money out of OUR insurance (which has a lifetime limit). I called our insurance to report to them that they've been paying for services NOT RENDERED. The insurance co told me the doctor's office needs to resubmit claim adjustments and return the money for services NOT rendered. (which would be under $1000.) It took a few more months (with their NEW billing person) for Dr. DeMarsche's office to finally ADJUST their charges and agree keep money for ONLY the services rendered (records/x-rays from 1st visit) and return most of the money that was collected 'in error'. To the new billing person's credit, she admitted they should have stopped taking the payments after my FIRST phone call, not after several. She was the one to finally agree to correct the situation rather than just tell me "not to worry, your balance is zero" (while taking the money from our insurance).
I respect Dr. DeMarsche's education and the opinion of any happy clients she may have had, but I question the ethics of the practice - both in recommending what is best for the patient and in how they (mis)handled our billing & insurance.
I read another review (for their Phila office) that agreed that their visit w/Dr. DeMarsche seemed like a big sales pitch to them. It's too bad that some doctors seem to care more about making profit than the patient's best interest.
Dr. Roberts is attentive and an excellent clinician. He has provided very careful orthodontic care to manage a very difficult maloclusion. The staff is very friendly and professional. I was very satisfied with my treatment.
Recent Polls
Was this provider's staff friendly?
Yes, they went above and beyond
Were you able to relax during your appointment?
Yes, I was completely at ease
Are you going to visit this provider again?
Without a doubt!
Did this provider ever dismiss your concerns as unimportant?
Never, they go out of their way to address every concern of mine immediately
Does this orthodontist offer flexible financing options?
Yes, they had flexible financing options
Does this provider ever overbook appointments here?
Never! They have lots of business, but they do such a great job of never overbooking.
Did you feel safe in this provider's care?
Absolutely! I knew I was being cared for by an expert!
Did this provider use excessive foul language?
Not at all! They are always respectful and courteous!
Did this provider have an entertaining selection of waiting room magazines?
Does this provider have a good professional reputation within your community?
Yes, they are known for being good at what they do
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