Medical Spa in the Upper East Side, NYC

Beauty Without an Expiration Date

At Aion Aesthetics Medical Spa in the Upper East Side, NYC, we don’t chase trends. We shape beauty that transcends age, formulas, and fads to deliver timeless enhancements that are authentic to you.

Aion, or Αιώνας, translates to eternity in Greek. We’ve built more than a practice of pursuing eternal confidence—we’ve built a community. Feeling truly incredible in your skin doesn’t come from one-size-fits-all care, but from soulful understanding combined with clinical precision.

Here, we curate each enhancement to preserve your unique essence, not erase it. Every evidence-based treatment feels deeply personal because it is, and our clients become our family. They don’t come here to look like anyone else. They come to Aion Aesthetics to become the best version of themselves, opening up about their personal struggles and aspirations to find a partner on their journey of self-discovery.

The Power of Precision

We specialize in subtlety because we understand that the best enhancements don’t draw attention but let your natural beauty speak for itself. Refinement doesn’t need to be obvious to be impactful.

When it comes to aesthetics, the difference between feeling good and feeling unstoppable often lies in just a few millimeters. That’s why we take the time to truly understand your vision and study your facial anatomy to inform our approach. We deliver results you didn’t think were possible, yet feel authentically you.

Fleeting trends dominate the typical medical spa in the Upper East Side, NYC, but our approach is rare. Our work isn’t one-size-fits-all. It’s facial architecture done with respect. Your journey starts with a one-on-one consultation, because our goal isn’t to make you look like someone else, but to help you step into your most empowered self.

At Aion Aesthetics, we see your beauty, and we’re here to help you see it, too. Whether it’s softening lines, restoring volume, or enhancing definition with precision, our results speak softly but leave a lasting impression.

In the right hands, less is more.

The Luxury of Certainty

When it comes to enhancing the features that make you who you are, trust is everything. In a city that never stops moving and where trends change overnight, that trust can feel difficult to earn. At Aion Aesthetics, we provide a wide range of innovative, science-backed solutions, but what we really offer is certainty—a rare and powerful luxury.

At our boutique medical spa in the Upper East Side, NYC, we pride ourselves on clinical excellence and provider consistency, giving you the peace of mind you deserve at every visit. Here, you’re not met with a new provider and going over the same surface-level questions at every appointment. You’re working directly with our doctor, who knows you and takes your care personally. Every consultation and treatment is led by our highly credentialed provider, Dr. Akis Ntonos, and not just a rotating team of aestheticians or technicians.

We recognize that the aesthetics world is saturated with bold promises, but at Aion Aesthetics, you receive personalized attention from a highly skilled provider. Beyond Dr. Akis’s advanced degrees from Johns Hopkins and Mount Sinai, he’s also trained alongside industry leaders in the United States and Europe.

Working with ever-changing providers, a generic treatment plan, and one-off injectors isn’t just inconvenient—it lacks continuity. As we’ve said, true beauty isn’t rushed, but forged through an intentional partnership. Harmonious results that evolve with you over time require consistent care, visit after visit.

Guesswork isn’t good enough when it comes to your face. Here, there are no surprises. Just science-backed care from someone who’s spent their life mastering the art of aesthetics. In the fast-paced world of aesthetic medicine, we offer a place to exhale and know that you’re in good hands, without any doubt.

Built on Trust, Backed by Credentials

At Aion Aesthetics, credibility and compassion converge in the hands—and hearts—of our co-founders. Our boutique practice is the incredible outcome of two professionals bringing clinical excellence and human connection to everything they do.

Recognized internationally, Dr. Akis Ntonos’s academic excellence makes a difference in every patient’s journey, noticeable at every visit. Recognized as a “Top Aesthetic Injector,” he combines advanced training with extensive experience to deliver expert care. He has an eye for the little things, using his clinical rigor to execute the most delicate refinements. Not only is Dr. Akis known for his commitment to subtlety and safety, but he’s also renowned for his unmatched ability to listen deeply, making clients feel seen, not spoken over, dismissed, or sold to.

Anastasios (Taso) Mikroulis, Aion’s Clinic Director and Director of Sales, brings a different but equally impactful kind of leadership. With over a decade of experience in wellness and weight loss coaching, he understands the emotional side of aesthetics. Beyond working behind the scenes to ensure your experience is flawless clinically, he’s the warm presence guiding you through consultations, follow-ups, and everything in between. Taso’s unique background in sales, theater, and hospitality allows him to make every visit to our office feel like visiting an old friend, while keeping medical excellence front and center.

Credentials matter, but at our medical spa in the Upper East Side, NYC, they’re only the beginning. Aion Aesthetics’ rare combination of rigorous credentials and genuine care sets us apart. At Aion, excellence is more than a tagline. It’s a lived experience, and every interaction counts.

The Intention Behind the Technique

There’s a reason clients stay loyal to Aion. We go beyond surface-level treatments because we’re invested in the full arc of your journey. Founded on the principle that great outcomes begin with thoughtful planning, we don’t do enhancements out of impulse.

At our medical spa in the Upper East Side, NYC, everything is designed with you in mind—both the current and future versions of yourself. While many clinics focus on instant gratification, we develop long-term strategies that preserve your beauty, not erase it. Yes, our medical professionals view your face through a medical lens, but also through the lens of possibility.

What can we do today to support how you want to feel next year? Or five years from now? Instead of chasing the next trend or a viral before-and-after photo, we help you pursue confidence on your terms. Change is a part of life, and we offer care that changes with you, keeping you radiant through every stage of life.

Filoxenia in Every Touch

There’s a reason our clients stay with us for years. They feel understood. They feel valued. They feel like they belong.

You can’t always describe it, but you feel it the moment you walk in—Aion is different. That difference stems from filoxenia (φῐλοξενῐ́ᾱ), the Greek ideal of “friends to strangers.” At Aion, filoxenia is at the heart of everything we do, diverging from the norm in the aesthetics industry.

More than a nod to ancient Hellenic values, the soul of Aion Aesthetics lies in showing generosity to our guests. Our medical spa in the Upper East Side, NYC, is a place people want to return to, and not just for the incredible results.

Our co-founder, Taso Mikroulis, is a master of thoughtful service, and his warmth sets the tone for our entire team. Alongside him, Dr. Akis offers clinical excellence wrapped in compassion, and together, we provide care that feels like coming home.

We prioritize connection, not transactions. Kindness is never an afterthought, and the small things matter. From greeting you by your name to showing sincere interest in your struggles, questions, and aspirations, we treat you like the honored guest you are.

This is where beauty meets belonging. This is Aion.

A Philosophy, Not a Menu

When you come to Aion Aesthetics, we don’t just ask, “What treatment do you want today?” We ask, “What are you working toward and why?” This difference may seem small, but it changes everything. Our medical spa in the Upper East Side, NYC, is rooted in our philosophy—not products.

In a world of à la carte medspas, Aion is different.

Whether you’re dealing with weight fluctuations, skin aging, sexual dysfunction, or hair loss, we craft solutions to help you overcome your struggles on your terms. It’s never copy-paste, because we account for all of your unique needs, from your budget and timeline to your habits and genetics.

We work to understand the bigger picture before recommending any treatment. From there, we may include our weight loss program, SkinTyte, the P-Shot, or scalp health treatments in your plan, but these aren’t just services. Rather, they’re tools, and we help you build the toolkit you need.

Investing in yourself isn’t selfish. When you feel truly at home in your skin, your confidence shines in everything you do, from setting an example for your kids to feeling sure of yourself at work. At Aion Aesthetics, we’re helping you strengthen the most important and often overlooked relationship you have—the one with yourself.

We treat you as the unique individual you are, helping you feel incredible in your skin and body, but also in your mind and heart. We’re here to uplift you, not upsell you. You deserve more than a one-off treatment. You deserve to feel seen, valued, and whole.

You deserve Aion.