Maryellen Stahley-brown CRNP Columbia, MD Specialties Occupational/Public Health Send message Add friend Details Professional Achievements: Previously achieved certification in Oncology Nursing, as a Medical-Surgical Clinical Nurse Specialist, and now as an Adult Nurse Practitioner. Favorite Thing About My Profession: The wide variety of career opportunities available to nurses. Associations Nursing Network Moderator Hub Seneca Valley Maryland Chapter Association of Occupational Health Nurses Maryland Area Association of Occupational Health Nurses