I help you focus on the parts of your practice that you love.

I founded EllBee Services to help mental health professionals like you reclaim your time and focus on your clients, not the admin work that keeps you up at night. From my own journey of building a business from scratch to overcoming countless challenges, I know the value of having someone reliable in your corner. That’s why I’m here—to be the trusted partner you need, whether it’s sorting out billing headaches or navigating complex credentialing.

Choosing EllBee Services means partnering with a dedicated team that truly cares about your success and the well-being of your practice.

I’m eager to help your practice run smoothly!

I’m Lesly, and I moved to the United States in 2013 from the Philippines, where I worked as an executive assistant. My role as a business services representative for a behavioral health group opened my eyes to the complexities of mental health administration, and I quickly discovered a passion for the field. This experience prompted me to dive deeper into topics like insurance billing, benefits eligibility, and office management, ultimately leading me to earn a certificate in medical billing and coding.

My journey into this field began when my mother fell ill. In the Philippines, medical bills must be paid directly, which drove me to create a part-time job to support her needs. My first client was a local psychiatrist, and this position led to more referrals, allowing me to help others manage their practices while navigating the challenges of medical billing.

After my mother’s passing, I was inspired to turn my part-time work into a full-time business to honor her legacy. EllBee Services represents my dream and dedication, and I’m committed to helping your business grow. I look forward to the opportunity to work together!

Why us?

At EllBee Services, we pride ourselves on our personal touch and unwavering dedication to our clients.

What sets us apart from the larger corporations:

Flexibility and Adaptability

Being a smaller team allows us to swiftly adjust to your evolving needs, delivering quick solutions.

Personalized Approach

We take the time to understand your unique needs and tailor our services to meet them, ensuring a more customized experience.

Strong Relationships

We prioritize building lasting relationships with our clients, fostering trust and collaboration that enhances your business operations.

Passion for Mental Health

Our founder’s background in mental health administration drives our commitment to supporting providers and improving patient care.

Local and Woman-Owned

As a woman-owned small business rooted in the community, we are dedicated to supporting local mental health practices and fostering strong connections within our area.

  • "I trust her completely and rely on her 110%"

    “I feel like Lesly and I built my practice together from the start, as I have been working with her from day 1. She credentialed me with insurance companies, set up my EHR, and handled every aspect of billing. I trust her completely and rely on her 110%. If it weren't for Lesly, I would be lost and wouldn't be getting paid for my work as a therapist. She's always quick to respond and find a resolution to any problem. If you need a billing provider, I recommend Lesly without hesitation and with full confidence. She makes it all possible for me and I am grateful for her service. “

    - Julia Thouin, LICSW, Be. Behavioral Health Care

  • "Reasonable rates and peace of mind"

    "Lesly has been such a help to me in my practice. Lesly took the lead on my credentialing process and is now my go-to person for any billing challenges I face. She is very knowledgeable and responsive and resolves any issues I have had with billing very quickly and thoroughly. With her very reasonable rates, I have peace of mind that lets me focus on the clinical pieces of my work. Lesly has my highest recommendation!"

    -  Jen Malcolm-Brown, LICSW

  • "Predictable cash flow and better systems"

    “Lesly and her team were nothing short of amazing for my practice. When my former billing company did not follow through on claims or credentialing services, Lesly agreed to work with me and got everything straightened out. We now have a predictable cash flow with much better systems in place. She also fought with the insurance companies for reimbursement and was able to recoup almost $20,000 which the other billers had done incorrectly. I couldn't be more thankful for her work and dedication.”

    -  Lauren Harris, LMHC -  Center for Perinatal Wellness

  • "Pleasant, professional, and completely reliable"

    “I hired Ms. Guerin in 2016 to work in my private practice after noticing her competence and initiative in a group practice where we worked. I ran my office on a complex practice management software that she quickly mastered. In addition to managing the routine and special tasks I requested, she has proposed and carried out other organizing and documentation ideas for my office. She handles insurance and patient payments, claims tracking, patient billing, banking, scanning, and filing for me. She is pleasant to work with, professional, and completely reliable. I highly recommend her!"

    -  Lisa A. Uyehara, MD

  • "I trust her completely and rely on her 110%"

    “I feel like Lesly and I built my practice together from the start, as I have been working with her from day 1. She credentialed me with insurance companies, set up my EHR, and handled every aspect of billing. I trust her completely and rely on her 110%. If it weren't for Lesly, I would be lost and wouldn't be getting paid for my work as a therapist. She's always quick to respond and find a resolution to any problem. If you need a billing provider, I recommend Lesly without hesitation and with full confidence. She makes it all possible for me and I am grateful for her service. “

    - Julia Thouin, LICSW, Be. Behavioral Health Care

  • "Reasonable rates and peace of mind"

    "Lesly has been such a help to me in my practice. Lesly took the lead on my credentialing process and is now my go-to person for any billing challenges I face. She is very knowledgeable and responsive and resolves any issues I have had with billing very quickly and thoroughly. With her very reasonable rates, I have peace of mind that lets me focus on the clinical pieces of my work. Lesly has my highest recommendation!"

    -  Jen Malcolm-Brown, LICSW

  • "Predictible cash flow and better systems"

    “Lesly and her team were nothing short of amazing for my practice. When my former billing company did not follow through on claims or credentialing services, Lesly agreed to work with me and got everything straightened out. We now have a predictable cash flow with much better systems in place. She also fought with the insurance companies for reimbursement and was able to recoup almost $20,000 which the other billers had done incorrectly. I couldn't be more thankful for her work and dedication.”

    -  Lauren Harris, LMHC -  Center for Perinatal Wellness

  • "Pleasant, professional, and completely reliable"

    “I hired Ms. Guerin in 2016 to work in my private practice after noticing her competence and initiative in a group practice where we worked. I ran my office on a complex practice management software that she quickly mastered. In addition to managing the routine and special tasks I requested, she has proposed and carried out other organizing and documentation ideas for my office. She handles insurance and patient payments, claims tracking, patient billing, banking, scanning, and filing for me. She is pleasant to work with, professional, and completely reliable. I highly recommend her!"

    -  Lisa A. Uyehara, MD