Board-Certified Orthodontist · Naples, FL · Since 1987

More Than Just
Straight Teeth —
A Smile That Changes
Everything

Dr. Leo R. Cullinan brings 35 years of board-certified expertise in Orthodontics & Dentofacial Orthopedics to children, teens, and adults throughout Naples — combining precision, function, and artistry to create smiles built to last a lifetime.

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35+
Years Experience
1987
Est. in Naples
1000s
Smiles Created
Why Thousands Trust Us

The Cullinan Standard

Board-Certified Orthodontic Specialist

Dr. Cullinan holds the highest credential in orthodontics — board certification in Orthodontics & Dentofacial Orthopedics — ensuring your care meets the pinnacle of specialty standards.

35 Years of Proven Excellence

Since 1987, Dr. Cullinan has delivered expert orthodontic care in Naples, building a legacy of lasting results across thousands of patient smiles.

Built on West Point Integrity

Every aspect of this practice reflects the discipline, honesty, and genuine care for others that Dr. Cullinan carried from West Point into every diagnosis and treatment plan.

Thousands of Transformed Smiles

Naples families have trusted Cullinan Orthodontics for decades. The thousands of smiles we've created across our community are our greatest credential.

On-Time. Every Appointment.

We respect your time as much as your health. Dr. Cullinan and his team are committed to keeping every appointment on schedule — no waiting, no wasted visits.

State-of-the-Art Technology

Our modern Naples facility uses advanced orthodontic technology to deliver precise, comfortable, and efficient treatment in an environment designed around your experience.

Our Difference

Excellence in Every Detail

Eight reasons why discerning Naples families have chosen Dr. Cullinan for over three decades.

Board-Certified Specialist

The highest credential in the specialty — signaling a standard of clinical mastery that goes far beyond a general dental degree.

35 Years of Expert Care

Three decades of focused orthodontic experience — from routine alignment to the most complex multidisciplinary cases.

West Point Standards

Dr. Cullinan's West Point background shapes every aspect of this practice: disciplined diagnosis, integrity in every recommendation.

Treatment for All Ages

From early childhood intervention to adult smile transformations — expert, personalized care for patients at every stage of life.

Multidisciplinary Approach

Coordinating orthodontics with surgical correction and restorative care — improving airway, bite function, and aesthetics as a complete solution.

State-of-the-Art Facility

Our modern, comfortable Naples office combines cutting-edge technology with a welcoming environment for precise, stress-free treatment.

Thousands of Smiles

A proud Naples institution since 1987 — Cullinan Orthodontics has transformed the smiles and lives of thousands across the community.

Respect for Your Time

Dr. Cullinan and his team maintain a firm commitment to on-time appointments every visit, because your schedule deserves the same care as your smile.

What We Offer

Orthodontic Services & Treatments

We pride ourselves on combining balance, comfort, and function to create beautiful smiles that will last a lifetime.

Cullinan Orthodontics consultation
First Step

Comprehensive Orthodontic Consultation

Your journey begins with a thorough evaluation where Dr. Cullinan assesses your teeth, bite, and jaw — creating a clear, personalized roadmap toward the smile you deserve.

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Children's Orthodontics

Early intervention can guide jaw development and prevent more complex issues later. Dr. Cullinan identifies and addresses orthodontic concerns at exactly the right stage of your child's growth.

Teen Orthodontics

Designed around the real-world needs of adolescents, our teen treatment delivers effective, comfortable results that keep pace with active, social, modern lifestyles.

Adult Orthodontics

It's never too late to invest in your smile. Dr. Cullinan provides precise adult solutions that balance clinical excellence with the discretion adults expect.

Dentofacial Orthopedics

Correcting jaw discrepancies and facial imbalances — improving both function and overall facial harmony beyond tooth alignment alone.

Orthodontic treatment at Cullinan Orthodontics

Complex & Multidisciplinary Treatment

Surgical correction, restorative dentistry, and comprehensive plans addressing function, health, and aesthetics together.

1987
Dr. Leo R. Cullinan
DDS, MS · Board-Certified Specialist
Orthodontics & Dentofacial Orthopedics
35+
Years Experience
1000s
Smiles Created
✦ West Point Alumnus
About Dr. Cullinan

Changing the Face of Naples —
One Smile at a Time

Cullinan Orthodontics has been changing smiles in Naples since 1987, guided by a mission rooted in the values Dr. Leo R. Cullinan carried from West Point: honor, discipline, and an unwavering commitment to those in your care. That spirit infuses every diagnosis, every treatment plan, and every appointment in this practice.

Dr. Cullinan is a board-certified specialist in Orthodontics & Dentofacial Orthopedics with 35 years of expertise across the full range of orthodontic treatment — for children, adolescents, and adults of all ages. His approach goes beyond aesthetics, combining balance, comfort, and function to deliver results that improve oral health, enhance self-esteem, and create beautiful smiles built to last a lifetime.

Behind every smile is a story, and we are honored to be part of thousands of them across Naples. Whether a case is routine or complex, Dr. Cullinan and his dedicated team bring the same standard of care to every patient — and the proof is in the smiles of those who have trusted us with theirs.

Board Certified
35 Years Experience
West Point Graduate
All Ages Welcome
Your Journey

From First Visit to Perfect Smile

Four clear, intentional steps — each one bringing you closer to the smile that changes everything.

01

Initial Consultation

Meet Dr. Cullinan for a comprehensive evaluation of your teeth, bite, and jaw. We take the time to understand your goals and explain exactly what treatment can achieve.

02

Custom Treatment Plan

Dr. Cullinan designs a personalized plan — balancing function, aesthetics, and your lifestyle — with a clear timeline and full transparency from day one.

03

Active Treatment

With state-of-the-art technology and attentive care at every visit, we guide your transformation efficiently and comfortably, keeping you informed at every milestone.

04

Your New Smile

When treatment is complete, you leave with a beautiful, functional smile — and a retention plan designed to protect your results for years to come.

Common Questions

Frequently Asked Questions

Yes. Dr. Leo R. Cullinan is a board-certified specialist in Orthodontics & Dentofacial Orthopedics — a distinction that reflects rigorous clinical evaluation and a commitment to the highest standards in the specialty.

Absolutely. Dr. Cullinan provides expert orthodontic treatment for patients of all ages — from young children benefiting from early intervention to adults seeking improved function, oral health, or a more confident smile.

Dr. Cullinan's board certification, 35 years of experience, West Point-forged values, and commitment to on-time appointments create an exceptional standard of care. His multidisciplinary approach also means complex cases are managed comprehensively — not just cosmetically.

Dr. Cullinan diagnoses and treats the full spectrum of orthodontic conditions — including crowding, spacing, overbite, underbite, crossbite, misalignment, and complex cases requiring jaw correction and coordinated multidisciplinary care.

Monday
8:30 am – 5:00 pm
Tuesday
7:30 am – 4:00 pm
Wednesday
8:00 am – 5:00 pm
Thursday
7:30 am – 4:00 pm
Friday
By appointment only

We are located at 4933 Tamiami Trail North, Suite 101, Naples, FL 34103 — on the first floor of a three-story glass building just behind the Annex Wealth Management building, directly across from Outback Steakhouse.

You can reach our Naples office by calling 239-434-0030, emailing DrLeo@CullinanOrthodontics.com, or using the contact form on this page. We look forward to welcoming you.

Yes — our Candid Corner features real patient stories that go far beyond straight teeth, including cases where orthodontic treatment improved airway function, bite, quality of life, and confidence. Their words speak louder than ours.

Ready to Begin?

Your Perfect Smile
Is Waiting for You

Join the thousands of Naples families who have trusted Dr. Leo R. Cullinan with their most important investment — their smile. Schedule your initial consultation today.

Call 239-434-0030
DrLeo@CullinanOrthodontics.com
4933 Tamiami Trail N,
Suite 101
Naples, FL 34103
239-434-0030
Appointments
Mon: 8:30 am – 5:00 pm
Tue: 7:30 am – 4:00 pm
Wed: 8:00 am – 5:00 pm
Thu: 7:30 am – 4:00 pm
Fri: By appointment
Get Directions →
Across from Outback Steakhouse on Tamiami Trail N