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Dr. Kellermann is an international speaker, author and creator of Necessary Workshops and products. Over 25 years ago, she

Marye Kellermann

 founded Necessary Workshops as an alternative to other nurse education materials and courses. Always creative and thinking out of the box in her teaching to nurses and NPs, Dr Kellermann began her teaching business after being fulltime tenure nursing faculty. Dr. Kellermann owns Educational Enterprises Inc, an approved ANCC provider for continuing education through the Maryland Nurses Association.Moving beyond traditional lecture, Dr. Kellermann used her expertise in whole brain learning to create an enhanced educational experience for all learners. She coined her technique Necessary Whole Brain Learning©, a teaching style which activates both hemispheres of the brain. The "NECESSARY Whole Brain" philosophy was the inspiration for all educational material, courses, and learning tools created by Dr. Kellermann. As Necessary Workshops grew over the years, Dr. Kellermann garnered an international fanbase throughout the nursing community and nursing education. Her review courses and test prep methods have helped thousands of Nursing and NP Graduates pass their certification exams. 

Dr. Kellermann has inspired countless faculty to look at education with an open heart and mind. Today, she continues to educate and motivate and mentor nurses, NPs, faculty, and healthcare workers. She is a popular guest speaker at universities and hospitals across the country.  Dr. Kellermann teaches all of her workshops exclusively, using her Necessary Whole Brain Approach© which many describe as stimulating, motivating, and exciting. She has an excellent sense of humor, experienced by all to make learning less stressed.

More About Dr. Kellermann:

Dr. Kellermann graduated from the University of Virginia with honors in 1977 and earned her MS in 1981 from the University of Maryland. In 2013, she received her PhD in Organizational Leadership at The University of Maryland, Eastern Shore.

She is a Distinguished Fellow of The American Association of Nurse Practitioners and a frequent presenter for national symposiums and specialty conferences for the AANP in national and specialty presentations in neurology.

She has recently worked as a nurse practitioner in internal medicine and a private practice neurology with a Johns Hopkins affiliated group . Currently, her practice includes free medical care of a religious order. Her specialties include neurology, cardiology, geriatrics, adolescence and general internal medicine, as well as international health care. She has been a manuscript reviewer for The National League for Nursing Journal since 2004.

Dr. Kellermann has been nominated for the National League for Nursing's award for Outstanding Leadership in Nursing Education in 2003, as well as the Outstanding Educator Award by the National Organization of Nurse Practitioner Faculties (NONPF) in 2004. In 2012, Dr. Kellermann was selected as a Fellow of the American Association of Nurse Practitioners. Dr. Kellermann was selected as a distinguished gerontological educator (DEGN) by the Hartford Foundation in 2021. As a CNE (nationally NLN certified nurse educator), as well as a CHSE in simulation education, Dr. Kellermann integrates evidenced based educational research in her teaching methods and evaluation of learning. Additionally,  Dr. Kellermann includes experiences as a speaker at national/ international organizations including the Toronto  Advanced Practice  Association, Black Nurses Association, Maryland Nurses Association, Veteran's Hosptial  in Puerto Rico, St. Louis Missouri Advanced Practice Association, AANP,  NONPF  on her Necesssary Whole Brain Teaching Method, neurology, teaching, issues for practice in the Advanced Practice Role and much more. Currently, she works full time as a Clinicial Assistant Professor for MSN , DNP and PhD students at The Catholic University of America. Dr. Kellermann has been an active contributing faculty member for the DC VA Hospital grant partnership for new NPs in the clinical residency program encouraging easing into safe NP practice as new graduates.Dr Kellermann has achieved certification  a CHSE ( Certified Health Simulation educator). In 2023 she completed a 12 credit graduate certificate course at the University of Maryland in Integrative Health and Wellness, her added mission in education.

Dr. Kellermann's Additional Qualifications:

Certifications: ANCC

  • Adult Primary Care
  • Gerontological Nurse Practitioner

Faculty Experience:

  • Coppin State University Graduate FNP Program: Acting Associate Dean for Graduate Studies and full time NP faculty
  • University of Maryland Graduate NP Program
  • Essex Community College
  • Stevenson University (Villa Julie College BSN Program)
  • Towson University
  • The Catholic University

Nurse Practitioner:

  • Johns Hopkins affiliated private practice neurology group
  • Internal Medicine private practice: Baltimore, Maryland
  • pro bono health care religious sisters


  • Health Care Agencies including telehealth delivery
  • Educational Programs; Nurse Practitioner: entry level nursing, DNP, PhD and master's level education programs


  • Necessary Physical Assessment (a book for every nurse)
  • Necessary Physical Assessment for Advanced Practice

Creator of:

  • NECESSARY Teaching
  • NECESSARY EKG/telemetry....  and many more NECESSARY Workshops
  • NECESSARY Physical Assessment
  • NECESSARY Leadership
  • Numerous Disease Entity Audio Reviews