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Your Trusted Orthodontic Care Provider in Massapequa, NY
Long Island Orthodontic Associates has been dedicated to transforming smiles through advanced orthodontic care since our founding. Our team of specialists, including Dr. Karen Leavy, Dr. Scott Mateer, and Dr. Lindsay Alimena, combines decades of collective experience with cutting-edge technology like Invisalign and iTero 3D scanning to deliver personalized treatment plans. We serve patients of all ages, from children requiring early intervention to adults seeking discreet solutions, ensuring optimal oral health and aesthetic results.

Our commitment to excellence is reflected in our comprehensive approach, which includes complimentary consultations, state-of-the-art diagnostics, and flexible financial options. With a focus on patient comfort and long-term relationships, we strive to make orthodontic care accessible and stress-free while achieving exceptional outcomes that exceed expectations.
Services
Braces Invisalign Early Treatment Adult Treatment Surgical Orthodontics Clear Braces iTero 3D Scanning Complimentary Consultation Payment Plans Insurance Assistance
Highlights and features
  • We offer personalized orthodontic treatment plans tailored to each patient's unique needs.
  • Our team utilizes advanced technology like iTero 3D scanning for precise diagnostics.
  • We provide complimentary initial consultations with no obligation.
  • Our orthodontists are board-certified and members of leading dental associations.
  • We accept major insurance plans and offer flexible payment options.
Services
Braces
Traditional metal and clear braces effectively align teeth for improved dental health and aesthetics. Our customized treatment plans address crowding, spacing, and bite issues using modern bracket systems. Patients receive regular adjustments to ensure optimal tooth movement and long-term results.
Invisalign
Invisalign uses removable, transparent trays to straighten teeth discreetly. 3D imaging creates personalized aligners that gradually shift teeth into ideal positions. This option suits active lifestyles with no dietary restrictions and minimal impact on daily activities.
Early Treatment
Early intervention guides jaw development and corrects bite issues in children aged 7+. Timely treatment prevents severe problems and reduces future orthodontic needs. We monitor growth patterns to determine ideal treatment timing for lasting results.
Adult Treatment
Specialized solutions address adult dental concerns, including discreet options like clear braces and Invisalign. We treat TMJ pain, uneven wear, and gum disease risks associated with misaligned teeth. Modern techniques minimize discomfort and treatment duration.
Surgical Orthodontics
Combined orthodontic and surgical treatment corrects severe jaw discrepancies. Pre-surgical orthodontics aligns teeth before surgical repositioning of jaws. This improves chewing function, speech clarity, and facial symmetry for complex cases requiring structural correction.
People
Dr. Karen Leavy
Orthodontist
Board-certified orthodontist with 15+ years at Long Island Orthodontic Associates. Graduated from NYU College of Dentistry and Montefiore Medical Center. Specializes in patient-centered care and continuing education.
Dr. Scott Mateer
Orthodontist
SUNY Stony Brook graduate with advanced training from Montefiore Medical Center. Member of American Academy of Orthodontics. Focuses on compassionate care and international dental missions.
Dr. Lindsay Alimena
Orthodontist
Board-certified specialist trained at Tufts University and Montefiore Medical Center. Former chief resident with expertise in pediatric and adult orthodontics. Committed to continuing education and family-centered care.
Questions
What orthodontic treatments do you offer?
We provide traditional braces, Invisalign clear aligners, early intervention treatments, adult orthodontics, and surgical orthodontics for comprehensive care.
Do you offer complimentary consultations?
Yes, we provide free initial consultations to evaluate your orthodontic needs and discuss personalized treatment options.
What technology do you use for diagnostics?
We use digital X-rays and iTero 3D scanning technology for precise, comfortable diagnostics without traditional impressions.
Are payment plans available?
Yes, we offer flexible payment plans with no financing fees and accept major credit cards for your convenience.
Do you accept dental insurance?
We work with Aetna, Delta Dental, Guardian, Cigna, and other major insurance providers to maximize your orthodontic coverage.
What sets your practice apart?
Our board-certified orthodontists combine advanced technology with personalized care to deliver exceptional results in a patient-focused environment.