MFC Consulting provides an array of independent consulting services to attorneys and insurance carriers. Services include development and /or review of Life Care Plans, Medical Cost Projections, Medicare Set-Aside Allocations, Catastrophic Case Management, Senior Care Management, and Legal Nurse Consulting.

Dr. Mariann Cosby, owner of MFC Consulting, has been a Registered Nurse and Public Health Nurse since 1980. Mariann holds advanced degrees in Nursing and Health Care Administration. Advanced certifications include: Legal Nurse Consultant Certified (LNCC), Certified Life Care Planner (CLCP), Certified Case Manager (CCM),Medicare Set-Aside Consultant Certified (MSCC),Certified Emergency Nurse (CEN), Nursing Executive – Board Certified (NE-BC), California Credentialed School Nurse (CSN), and Special Teaching Authorization in Health. In recognition of her sustained contributions to emergency nursing practice, in 2020 Dr. Cosby was inducted as a Fellow into the Academy of Emergency Nursing (FAEN). Dr. Cosby also holds certificates in Case Management and Quality Management. Verifications include provider of Advanced Cardiac Life Support; Pediatric Advanced Life Support, and Basic Life Support.

Mariann has developed the specific skills necessary in a wide range of nursing disciplines to provide a global perspective to the standards and quality of nursing care and application to the life care planning process. Mariann has been a Registered Nurse for 40 years and remains clinically active. Her acute care experience includes: Emergency, Trauma, Critical Care, Medical-Surgical, Geriatrics, and Pediatrics; along with nursing administration, case management, discharge planning, home health, geriatrics, elder care and abuse.

Dr. Cosby was the Chief of California’s Preventive Health Care for the Aging/Adults program which serviced older adults and the elderly until funding was eliminated in 2008. As a nurse consultant and program administrator, Mariann applied her knowledge regarding chronic diseases and disability to develop and write clinical guidelines and policies based on standards of care. Mariann was a nursing consultant for California Correctional Health Care Services for ten years where she researched and performed clinical investigations of health care grievances/appeals submitted by patient/inmates. She determined whether health care is delivered in accordance with regulatory, departmental and community standards. She also identified potential risk management issues and worked with institutions to implement strategies which promote risk reductions and improvement in quality patient care along the health care continuum.

In addition, Dr. Cosby functioned as an adjunct nursing faculty member for schools of nursing and remains approved by the California Board of Registered Nursing to teach general nursing, pediatrics, and geriatrics. Mariann also has experience as a School Nurse and an in depth understanding of the nursing aspects of Special Education and Children with disabilities and special healthcare needs. Dr. Cosby is published in a number of peer reviewed journals and textbooks and has editorial experience as the past Editor for the Journal of Nurse Life Care Planning.

Using her training, experience, and based on case merit and standard of care, Dr. Cosby provides informed professional opinions to attorneys. The ability and expertise to ethically evaluate, analyze, strategize, and collaborate are the hallmarks of a Legal Nurse Consultant. Mariann’s skills, from record review, timeline analysis, and case summary to depositions and courtroom testimony, make her a valuable asset to any professional team.

Mariann has been retained in more than 150 medical malpractice, personal injury, and life care planning cases combined. Her testimony experience spans from 1991 to the present.

With connections to a broad network of medical and legal colleagues, Mariann has the resources to bring the specific medical experts required for the case together with the legal representatives

Areas of Expertise
  • Addiction Medicine
  • Audiology
  • Brain Injury
  • Child Abuse
  • Child Psychiatry
  • Child Psychology
  • Correctional Healthcare
  • Drug Abuse
  • Emergency Medicine
  • Geriatrics
  • Hospital & Medical Ethics
  • Independent Medical Examinations
  • Legal Nurse Consultant
  • Life Care Planning
  • Long Term Care
  • Managed Care & HMOs
  • Medical Billing
  • Medical Fraud
  • Neurodevelopmental Disorder/Disability
  • Neurophysiology
  • Neuropsychology
  • Neuropsychopharmacology
  • Nursing
  • Nursing Homes
  • Nutrition
  • Occupational Medicine
  • Orthopedic Surgery
  • Orthotics & Prosthetics
  • Pain Management
  • Pediatrics
  • Personal Injury
  • Post Traumatic Stress Disorder
  • Preventive Medicine
  • Psychology
  • Psychopharmacology
  • Sanity/Competency to Stand Trial
  • Sexual Abuse
  • Spousal Abuse
  • Suicide
  • Urgent Care
  • Wrongful Death

Expert Background
Q: Please list your professional accreditations, degrees, licenses, and certificates granted:
A: Doctor of Nursing Practice (DNP)
Licensed Registered Nurse, State of California, 1980 – Present
California Public Health Nursing Certificate, 1980 – Present
Certified Emergency Nurse (CEN), 1986 – Present
Nursing Executive – Board Certified (NE-BC), 1987 – Present
Legal Nurse Consultant Certified (LNCC), 1998 – Present
Certified Life Care Planner (CLCP), 2003 – Present
Certified Case Manager (CCM), 2005 – Present
Medicare Set-aside Consultant Certified (MSCC) 2005 – Present
Advanced Cardiac Life Support Provider (ACLS), 1980 – Present
Advanced Cardiac Life Support Instructor, 1989 – 2013
Pediatric Advanced Life Support Provider (PALS), 1992 – Present
California Credentialed School Nurse (CSN), 1997 – Present
Fellow Academy of Emergency Nursing (FAEN), 2020 – Present
Q: Please list your affiliations or memberships in any professional and/or industry organizations:
A: American Nurses Association 2012 – Present
Academy of Correctional Health Professionals, 2011 – Present
American Association of Nurse Life Care Planners, 2005 – Present
International Association of Rehabilitation Professionals, 2003 – Present
Case Management Society of America, 2002 – Present
National Association of School Nurses, 1997 – Present
American Association of Legal Nurse Consultants, 1991 – Present
Emergency Nurses Association, 1986 – Lifetime
Sigma Theta Tau, National Honor Society of Nursing, 1980 – Present
The Honor Society of Phi Kappa Phi, 1980 – Lifetime
Q: Please list any teaching or speaking experience you have had, including subject matter:
A: College Nursing Curriculum (all semesters)
Advanced Cardiac Life Support (all components)
Secondary Health
Speaker AALNC (case presentations)
Nursing Malpractice
Pediatric Assessment
Q: Have any of your accreditations ever been investigated, suspended or removed? (if yes, explain)
Q: On how many occasions have you been retained as an expert?
A: Approximately 150
Q: For what area(s) of expertise have you been retained as an expert?
A: General nursing standards of care, correctional nursing, emergency, trauma, patient falls, IV therapy, skilled nursing facilities (SNF), transfers/COBRA/EMTALA, medication administration, triage, wrongful death, nursing administration, physician/nursing communications, PACU/recovery room, pediatrics, school nursing, children with special health care needs, patient safety, patient falls, restraints, gerontology, wound care. Life care planning, medical cost projections, medical bill analysis.

Additional information is available by contacting

Q: In what percentage of your cases were you retained by the plaintiff?
A: Approximately 50%
Q: In what percentage of your cases were you retained by the defendant?
A: Approximately 50%
Q: On how many occasions have you had your deposition taken?
A: Approximately 50 cases
Q: When was the last time you had your deposition taken?
A: January 2020
Q: On how many occasions have you been qualified by a court to give expert testimony?
A: approximately 15
Q: On how many occasions have you testified as an expert in court or before an arbitrator?
A: approximately 17
Q: For how many years have you worked with the legal industry as an expert?
A: 30
Q: What services do you offer? (E.g.: consulting, testing, reports, site inspections etc.)
A: Consulting, expert witness, life care plans, medical cost projections, medical bill analysis, medical record review/case review for merit, research, written or verbal reports, fact witness, pain and suffering reports, observation of individual medical evaluation exams and written reports, and case management.
Q: What is your hourly rate to consult with an attorney?
A: upon request
Q: What is your hourly rate to review documents?
A: upon request
Q: What is your hourly rate to provide deposition testimony?
A: upon request
Q: What is your hourly rate to provide testimony at trial?
A: upon request
Q: Please list any fees other than those stated above (E.g.: travel expenses, copy fees, etc.)
A: This information is available upon request by contacting MFC CONSULTING.


This information is available upon request by contacting MFC CONSULTING 916-974-1222 or

Posted in Addison's Disease Expert Witness, Adult Respiratory Distress Expert Witness, Atypical Dental & Facial Pain Expert Witness, Autism Expert Witness, Bariatrics Expert Witness, Clinical Medicine Expert Witness, Pulmonologist Expert Witness, Shin Splints Expert Witness, Sickle Cell Disease Expert Witness, Urgent Care Expert Witness and Wound Care Expert Witness

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