Healthy smiles today
Confident smiles
for life.
Smiles + Grins provides orthodontic and pediatric dental care in Manhattan’s Upper East Side, with dedicated treatment for kids, teens, and adults — all in one trusted, family-friendly practice.
Trusted by 1,000+ Upper East Side families
Smiles transformed
5-star patient reviews
Years of trusted care
All ages
One home for your family’s smiles
Featured in
Specialty orthodontic and pediatric dental care in one trusted Manhattan practice, with modern technology, transparent pricing, and treatment options for kids, teens, and adults.
5,000+
Smiles Created
Led by Dr. Karin and Dr. Liel, our specialists have crafted over 5,000 happy smiles.
670+
5-Star Reviews
Families from all over leave great reviews praising the quality of care and attention.
$0
Hidden Fees
No surprises. Upfront pricing and in-office financing options for every treatment.
3D
Modern Technology
High-tech imaging, 3D scans, and the latest dental innovations for every patient.
Dr. Karin Grinbaum
Orthodontist · DDS
Personalized orthodontic care for children, teens, and adults, with modern treatment options designed around each patient’s smile and lifestyle.
Dr. Liel Grinbaum
Pediatric Dentist · DMD
Gentle pediatric dental care for infants, children, and teens in a welcoming, family-friendly environment.
Two specialists. Two practices. One trusted home.
Orthodontist · Founder
Dr. Karin is an award-winning orthodontist, NYU graduate, and member of the OKU Honor Society. With 10+ years of experience, she develops distinctive, self-assured smiles through Invisalign®, InBrace®, and traditional braces.
Pediatric Dentist · Founder
Dr. Liel is a board-certified pediatric dentist with a DMD from UMDNJ, with advanced training at North Shore University Hospital and Maimonides Medical Center. He focuses on gentle, stress-free care so every child feels safe.
Visit Smiles + Grins on the Upper East Side
Orthodontics
Dr. Karin Grinbaum
Phone
Hours
Mon: 9:00 AM – 6:00 PM
Tue: 9:00 AM – 5:00 PM
Wed: 8:00 AM – 5:00 PM
Thu: 8:30 AM – 7:00 PM
Fri: 9:00 AM – 5:00 PM
Sat · 10 AM – 3 PM (by appt.)
Schedule a consultation →
Pediatric Dentistry
Dr. Liel Grinbaum
Phone
Hours
Mon: 9:00 AM – 6:00 PM
Tue: 9:00 AM – 5:00 PM
Wed: 8:00 AM – 5:00 PM
Thu: 8:30 AM – 7:00 PM
Fri: 9:00 AM – 5:00 PM
Sat · 10 AM – 3 PM (by appt.)
Schedule a consultation →
Specialty care, side by side. A consultation is where every great smile starts.
Book an orthodontic consult
Adilene from Dr. Karin's team will be in touch
We'll be in touch within 1–2 business days.
Contact page →✓Your request has been sent.
We look forward to welcoming you to your new dental home.
Adilene will be in touch within 1–2 business days.
Need us sooner? Call 212-777-6177
Book your child's visit
Sharis from Dr. Liel's team will be in touch
We'll be in touch within 1–2 business days.
Contact page →✓Your request has been sent.
We look forward to welcoming you to your new dental home.
Shari will be in touch within 1–2 business days.
Need us sooner? Call 646-448-8773
