Hallie Lynn OBranovic, MSN, RN, NP-C
Family Nurse Practitioner, board-certified by the American Academy of Nurse Practitioners
Boulder Medical Center – Louisville | Avista

As a practitioner in Boulder Medical Center’s Louisville allergy clinic, Hallie OBranovic brings a passion for personalized, patient-centered care and extensive experience in allergy and immunology. A native of southeastern Michigan, Hallie relocated to Colorado in early 2024 with her husband and two young children. After years of visiting the state to see her older brother, she fell in love with Colorado and is thrilled to call it home.

Encouraged by her mother, who recognized her strengths in science, math, and caregiving, Hallie pursued a career in nursing. She began in pediatric intensive care and developed exceptional communication skills with families. Transitioning into family medicine and later specializing in allergy and immunology, Hallie discovered her passion for helping patients manage complex conditions. She describes her work in allergy and immunology as both challenging and deeply rewarding.

Hallie’s philosophy of care is rooted in treating every patient like a loved one. She combines evidence-based medicine, clinical expertise, and shared decision-making to develop individualized treatment plans. With over eight years in academic allergy specialty care, two years in family medicine, and eight years in pediatric intensive care nursing, Hallie brings a wealth of knowledge and compassion to her practice.

Outside of work, Hallie enjoys spending time with her husband and their two young children, ages 5 and 3.5. Before parenthood, she loved traveling, baking desserts, crocheting, hiking, and snowboarding—activities she looks forward to resuming as her children grow.

Hallie looks forward to providing exceptional care in allergy and immunology.

Hallie provides care for a wide range of allergy and immunology concerns, including:

• Allergic rhinitis
• Asthma
• Atopic dermatitis
• Food allergies
• Anaphylaxis
• Hives
• Drug allergies
• Sinusitis
• Immune deficiencies
• Oral food and medication challenges
• Hallie enjoys collaborating with families to solve complex cases

• Graduate School — University of Cincinnati
  Master of Science in Nursing - Family Nurse Practitioner. School Accreditation: Commission on Collegiate Nursing Education
  Cincinnati, OH
  2011-2013

• Undergraduate — Mercy College of Northwest Ohio
  Bachelor of Science in Nursing. School Accreditation: American Association of Colleges of Nursing
  Toledo, OH
  2005-2008

• American Nurses Association Member – since 2008
• Michigan Nurses Association Member – since 2008
• UMPNC-MNA, District representative: January 2024-present
• American Academy of Nurse Practitioners Member – since 10/2016
• American Academy of Allergy, Asthma & Immunology Member – since 4/2018
• Michigan Allergy and Asthma Society – since 7/2023