A Shadyside practice built on clear answers
Since 2004, Northstar has grown from two chairs to four dentists without losing the habit of explaining everything.


From two chairs to a four-doctor practice
Dr. Maren Kowalczyk opened Northstar above a Walnut Street boutique in 2004 with two chairs, one hygienist and a simple rule: patients should understand their mouths as well as their dentist does.
As Shadyside and Squirrel Hill families grew with us, the practice added Dr. Andre Whitfield for restorative and root canal care, Dr. Grace Liu for cosmetic dentistry and aligners, and Dr. Elena Duarte for children and families. In 2018 we moved into the full third floor, added a 3D imaging suite and began milling crowns in the office.
The rule has not changed. It is why we turn the screen toward you, put prices in writing and tell you when something can wait.
What we hold ourselves to
Four promises that shape every appointment, from a cleaning to a full-arch implant case.
- 1
Show, then treat
Every x-ray, scan and photo goes on a screen you can see before we recommend anything.
- 2
Prices before procedures
Written estimates with your insurance portion come before treatment, never after.
- 3
Fix what matters first
Plans are ranked by urgency, so you know what can safely wait a year.
- 4
One chart, four doctors
Complex cases are reviewed together every Wednesday, so you get more than one opinion.
2004
Opened on Walnut Street
11,400+
Patients cared for
4.9
Average from 1,186 reviews
2
Emergency slots held daily
The doctors and team
Meet the whole team



- Tasha Greene, RDHLead hygienist, 14 years
- Marisol Vega, RDHHygienist, patient education
- Kelsey O'Brien, EFDAExpanded function assistant
- Jordan Park, EFDASurgical and implant assistant
Credentials and licenses
Training and standards you can verify. Ask us for license numbers any time.
- 1Licensed by the Pennsylvania State Board of Dentistry (demo)
- 2Members of the American and Pennsylvania Dental Associations
- 3OSHA and CDC infection control protocols, audited annually
- 4CPR and medical emergency certified team, renewed every two years
- 5Fellowship, Academy of General Dentistry (Dr. Kowalczyk)
- 6American Academy of Cosmetic Dentistry member (Dr. Liu)

Come see how we work
Tell us what you need and when you are free. Our front desk confirms within one business day.
4.9 from 1,186 patient reviews