Since 1993 Dr. Fein has had more than 14 public speaking roles at major medical conferences. She has been a member of the National Lyme Caucus (drafted legislation to create a national committee for Lyme), the National Health Legislation Task Force, and an Advisor to the Lyme Disease Foundation. In 2008 she was the Master of Ceremonies at a landmark conference bringing together practitioners treating Lyme Disease as well as those treating Chronic Fatigue Syndrome for the first time. She is both an experienced researcher, through grants from Hoechst labs as well as Pfizer pharmaceuticals, and a seasoned public speaker.

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Dr. Fein holds both an MPH in Epidemiology and Biostatistics from Columbia University and an MD with distinction from George Washington University Medical School.  She has been in practice since 1986 and has taught Epidemiology to medical and public health students at Columbia University and Mt. Sinai Hospital. She has also taught Internal Medicine Residents at Mt. Sinai in NYC followed by Rheumatology Fellowship at NYU. She currently serves as an Adjunct Asst. Professor at Rutgers.

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Dr. Fein was one of 4 students in the 1970's to open a clinic (called The Muldersdrift Clinic) for farm laborers near Johannesburg. That area was identified as having the highest infant mortality rate in the Johannesburg area. They provided free vaccines, education about nutrition in their native tongue by nurses they picked up at the train station, diagnosis and treatment with a fully functioning pharmacy and contraceptives to females. They also worked with the local witch doctors to reach an alliance. When she left South Africa in 1977, the clinic had 10,000 patients, and that area had the LOWEST infant mortality rate due to their work. That clinic was kept alive by the nurses and is now a huge part of the medical school in Johannesburg. Dr. Fein completed a Bachelor of Science degree with Honors at the University of the Witwatersrand in JHB and started medical school.

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Dr. Fein was elected into the Honors society called AOA (Alpha Omega Alpha) at GWU and received an award for academic excellence by the American Medical Women's Association (AMWA) when she graduated from GWU Cum Laude. Dr. Fein was nominated by the Governor and confirmed by the NJ Senate to serve on the Medical Practitioner Review Panel which reviews cases of doctor misconduct and reports to the Board of Medical Examiners in NJ. She served for one year.