About
At Union Fillmore Dental, we are committed to preserving natural smiles with advanced techniques and patient-centered care. Our mission is to empower our San Francisco community with personalized, minimally invasive dentistry in a welcoming and comfortable environment. Discover how we redefine modern dental care with innovation, precision, and compassion.

Precision Meets Passion
Get To Know Dr. Marianna Rexan
Dr. Marianna Rexan is passionate about creating beautiful, healthy smiles while preserving the natural integrity of her patients’ teeth. A graduate of the prestigious UCSF School of Dentistry, Dr. Rexan has dedicated her career to advancing her skills in modern, minimally invasive dental techniques. She believes that every patient deserves care that not only meets but exceeds their expectations, and she works tirelessly to deliver treatments that are tailored to individual needs.
With extensive training in Bioclear restorations, Invisalign, and aesthetic dentistry, Dr. Rexan combines her artistic eye with technical precision to achieve stunning, natural-looking results. Her conservative approach prioritizes preserving as much of the natural tooth as possible, ensuring long-term oral health and beauty. Whether it’s a smile makeover or a simple cleaning, her meticulous attention to detail ensures patients leave her office feeling confident and cared for.
Beyond her clinical expertise, Dr. Rexan is deeply committed to creating a welcoming and comfortable environment for her patients. She understands that dental visits can be stressful for some and takes pride in her ability to put patients at ease with her gentle approach and clear communication. Dr. Rexan is also a firm believer in patient education, empowering her patients to make informed decisions about their dental health.
When she’s not in the office, Dr. Rexan enjoys exploring San Francisco’s vibrant neighborhoods, hiking its scenic trails, and capturing the beauty of nature through photography. She also dedicates time to continuing education, ensuring that she stays on the cutting edge of dental advancements to provide her patients with the best care possible.

What to Expect
A Seamless Experience
From the moment you walk into Union Fillmore Dental, you’ll notice the difference. Our bright, welcoming office is designed to make you feel at ease, with friendly team members ready to greet you and assist with any questions. We prioritize your comfort and time, ensuring a smooth check-in process and personalized care tailored to your unique needs.
Dr. Rexan and our team take the time to understand your goals and concerns, walking you through every step of your visit so you always feel informed and confident in your care. Whether it’s your first appointment or your tenth, we’re committed to making every visit a positive and stress-free experience.
What to Bring
To ensure a seamless visit, please bring your ID, dental insurance information (if applicable), and any previous dental records that might help us understand your dental history. If you’ve completed our new patient forms online, there’s no need to print them—digital submissions are always appreciated and help us further streamline your experience.
Don’t hesitate to reach out to our team if you have any questions before your appointment.

Comforts & Amenities
Your comfort is our priority. Our practice is designed to help you relax while receiving the highest quality care.
- Cozy blankets and supportive neck pillows
- Spacious, light-filled treatment rooms
- Personalized care for your unique needs

Technology
We use cutting-edge technology to deliver precise, efficient, and effective dental care tailored to each patient.
- iTero Digital Scanner: Say goodbye to messy impressions with fast, accurate digital scanning.
- Diode Laser: Advanced treatments with less discomfort and faster recovery times.
- DSLR Camera: High-resolution imaging for detailed treatment planning and diagnostics.
- Dexis Digital X-ray: High-definition, low-radiation imaging.
- Diagnodent: Digital detection of emerging tooth decay.

Giving Back to San Francisco
Supporting Our Community
Union Fillmore Dental is proud to serve San Francisco beyond our office walls. While we are currently building partnerships with local organizations, our goal is to contribute to the well-being of our vibrant community through events, sponsorships, and educational outreach programs.





