Specialist: Nurse Practitioner

Ashley Kloeb, MSN, CPNP-AC is a Pediatric Nurse Practitioner who is passionate about helping children and their families live healthier, happier lives. Originally from Westerville, Ohio, Ashley earned a Bachelor of Science in Nursing from The Ohio State University before going on to complete a Master of Science in Nursing with an Acute Care Pediatric Nurse Practitioner certification at the University of Colorado.

After graduating from nursing school in 2015, Ashley gained diverse experience working as a registered nurse in pediatric oncology and bone marrow transplant, as well as in pediatric emergency medicine. She also worked as a pediatric travel nurse, providing care to children in a variety of clinical settings across the country. Following completion of graduate training in 2022, Ashley practiced in pediatric neurosurgical specialties before joining Pediatric Sleep Specialists.

In her current role as a Nurse Practitioner, she is dedicated to improving the quality of life for pediatric patients and supporting families through compassionate, individualized care.

Outside of work, Ashley enjoys spending time outdoors, including hiking, mountain biking, and snowboarding.

Linda Spangenberg, MSN, APRN, CPNP-PC is a dedicated Pediatric Nurse Practitioner with over two decades of diverse nursing experience. She began her career after earning a Bachelor of Science in Nursing from Southwestern Oklahoma State University in 2000, working in rural hospital settings where she developed a strong foundation in emergency care. Her time in the ER honed her clinical judgment and deepened her passion for serving underserved communities.

After relocating to Houston, she transitioned to school nursing, providing compassionate care to elementary-aged children and serving as a vital health resource for students, families, and staff. Inspired to expand her impact, she pursued advanced education and earned her Master of Science in Nursing with a pediatric focus from Houston Christian University in 2019.

In 2020, she became a board-certified Pediatric Nurse Practitioner by the Pediatric Nursing Certification Board (PNCB). Since then, she has been committed to delivering high-quality, family-centered care to children across a range of clinical settings. Her approach blends clinical expertise with a warm, empathetic presence, making her a trusted advocate for her young patients and their families.

She became a Pediatric Nurse Practitioner to expand my impact—not just in treating illness, but in promoting wellness, educating families, and being a consistent presence in a child’s healthcare journey. As a registered nurse, she loved hands-on care and connection with patients, but she wanted to take on a more active role in diagnosis, treatment planning, and long-term care. Becoming a Pediatric Nurse Practitioner allowed her  to deepen her clinical knowledge while continuing to do what she loves: building trust with children and their families and helping them thrive.

Linda’s favorite part of working with children is the pureness of their hearts. Whether it’s pure happiness, pure silliness, pure mischief, or even pure fear or sadness, everything they feel is so genuine and unfiltered. That honesty is both humbling and inspiring. It reminds me daily of the importance of meeting them where they are, with compassion, patience, and joy. Working with Pediatric Sleep Specialists allows her to make a meaningful impact on a foundational aspect of children’s health—sleep. Linda loves being part of a team that helps families understand and manage sleep challenges, which often affect not only the child’s well-being but the entire household. It’s incredibly rewarding to see how improving sleep can transform a child’s mood, behavior, academic performance, and overall development.

Lucy Martin, CPNP-PC is a board-certified Pediatric Nurse Practitioner specializing in pediatric sleep. She grew up in Nashville, Tennessee, and earned her degree from Vanderbilt University before completing her Master’s in Nursing with a focus in Pediatric Primary Care.

Lucy began her career in pediatric primary care, where she spent over three years building strong relationships with children and their families. She later expanded her clinical experience with four years working in the operating room, gaining a deeper understanding of patient care across different settings.

She is passionate about helping children and families achieve healthy, restful sleep. Lucy’s favorite part of her work is connecting with her patients and their families in clinic and guiding them toward meaningful improvements in their daily lives. She finds it especially rewarding to hear from families who are finally sleeping well and experiencing the positive impact that quality sleep brings.

Outside of work, Lucy enjoys spending as much time outdoors as possible. You’ll often find her hiking, skiing, reading, or practicing yoga.