About Sage

Behavioral Billing

Building Strong Foundations for New Behavioral Health Practices

At Sage Behavioral Billing we specialize in helping brand-new solo therapists and launching behavioral health clinics build a healthy, sustainable practice from day one.

Starting a practice is an incredible milestone, but navigating the world of claims, coding, and payer guidelines can quickly steal the joy out of your new journey. We exist to make sure you never have to figure it out alone.

Whether you need hands-on billing management from your very first patient, interactive training to learn how to manage your own billing confidently, or strategic consulting to set your systems up right, we are here to grow alongside you.

Why We Focus on New Practice Owners

When you build a practice on a clean, solid foundation from day one, you save yourself years of administrative stress, lost revenue, and claim headaches down the road.

Most traditional billing companies prefer to step in only after a practice is large and established. We do things differently. We intentionally focus on new practices because we believe in the power of building true, long-term partnerships from the ground up.

Why this matters for your practice:


Inheriting old, mishandled claims and chaotic billing history creates unnecessary liability and financial stress. By helping you set up clean billing and coding protocols from your very first claim, we protect your revenue before issues ever arise.

Preventing messes before they start


Our goal isn't just to process your claims. it's to build a genuine relationship with you. We want to be the team you lean on as your caseload doubles, as you hire your first associate, or as you expand into a full clinic.

Building together, step by step


Not every new practice is ready to hand off billing entirely and that’s okay! Whether you want hands-on billing services, one-on-one billing training so you can manage your own books with confidence, or a hybrid approach where we train you now and take over later when your caseload grows, we adapt to where you are right now.

Support That Fits Your Journey


Meet Our Founder

Hi! I’m Tiffany McCasland.

Founder & Practice Director

If there’s one thing I’ve learned in my time in healthcare, it’s that therapists and mental health providers have some of the biggest hearts on the planet. You dedicate your lives to holding space for others, guiding people through their hardest moments, and building healthier communities. But when you step out to launch your own solo practice or behavioral health clinic, you're suddenly expected to be a master business owner, insurance expert, and billing specialist overnight.

That is where my passion lies and exactly why I started Sage Behavioral.

My path in healthcare began when I earned my MA certification. From there, I unexpectedly landed in the insurance industry, spending over a year on the inside working hands-on with both providers and patients. Daily, I helped resolve complex coding issues, untangle denied claims, and navigate customer service roadblocks for multiple insurance companies.

In 2020, I saw how desperately healthcare providers needed dedicated, knowledgeable support on their side. That inspired me to pivot directly into medical billing. After three years of learning billing coding for multiple specialties, I made a very intentional choice to specialize deeply and exclusively in behavioral health. After three years within the behavioral health world and connecting with so many amazing therapists and practice owners throughout my career. I finally decided to launch something I felt could make a huge difference for providers that are newly stepping into practice and combine it with something that could reach and impact so many lives.

Mental health billing isn't like standard medical billing; it’s unique, nuanced, and requires a high level of care and attention. Because I’ve worked both inside the insurance world and in the daily trenches of practice billing, I know exactly how insurance payers think, why claims get stuck, and how to get them resolved quickly. I’ve spent years mastering these complexities so that you never have to carry that administrative stress alone.

Why This Work Means the World to Me

For me, behavioral health isn't just an industry or a business niche. it is a deeply personal calling. Having navigated my own health and life journeys, I know firsthand how vital accessible mental health care and strong support systems truly are. I have immense respect for the work you do every day, and I see my role as your dedicated partner in practice growth, ensuring your practice stays financially healthy so you can keep doing what you love and touch as many lives as possible.

My commitment to this field goes beyond billing contracts. I am a passionate advocate for mental health awareness, education, and reducing stigma. That heart for advocacy is why I’m actively building a free Advocacy & Resource Hub right here on our site. I wanted to create a welcoming space filled with free tools, guidance, research, education, awareness, and community resources to support both providers and individuals navigating the mental health space.

My Promise to You

When you partner with us, you are never just an account number or a line item on a spreadsheet. I treat your practice with the same warmth, diligence, and genuine care that I would my own. Whether we’re jumping on a video call to train you on your billing systems, auditing your early claims to make sure everything is clean, or stepping in to manage your full revenue cycle, I am here to walk alongside you with encouragement, total patience, and honest guidance every step of the way.

I can’t wait to meet you, hear your story, and help you build a thriving practice from day one!

Our Mission & Core Values

Dedicated to Supporting the Hands That Heal

At Sage Behavioral, our mission is to stand as a reliable pillar of support for new practitioners and behavioral health clinics. We bring together hands-on billing services, personalized provider training, and dedicated behavioral health advocacy to help you build a confident, sustainable practice.

The Heart Behind Our Work

Everything we do is guided by three simple, core promises:


Compassionate Practice Support: We treat your practice with the patience, warmth, and care it deserves. Whether we’re handling your claims, training you to navigate your own billing, or advising you on smooth practice workflows, you’ll always have an approachable partner in your corner.


Uncompromised Transparency: No hidden fees, no black-box processes, and no guesswork. You will always know where your claims stand, how your revenue cycle is performing, and how your practice is growing.


Impact Beyond the Numbers: Our commitment extends far beyond the numbers. Through our educational resources and community initiatives, we actively work to reduce stigma, spread awareness for behavioral health conditions, and support the broader behavioral health movement.

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