“With over 25 years of experience, I continue to provide compassionate care for my patients. I truly enjoy getting to know each and every person. The personal relationship between provider and patient is just as important as the healthcare relationship.”

Board Certification

  • Physician Assistant

Areas of Expertise

  • Emergency Medicine
  • Family Medicine
  • Urgent Care


Graduate School

Saint Francis University
Physician Assistant Studies
Loretto, PA

Undergraduate School

George Mason University
Bachelor of Science, Psychology/Biology
Fairfax, VA

Personal Interests

Elizabeth’s husband and two little girls keep her quite busy. She enjoys cooking, gardening, photography, and piano. Elizabeth could play soccer every day if her schedule allowed!


Elizabeth (Liz) Posoli has been practicing medicine as a Physician Assistant for over 25 years in Family Medicine and Emergency Medicine. She grew up in Bowie, MD and graduated George Mason University with a dual major in Psychology and Biology in 1994. She found a home on the crew team at GMU and spent many hours on the Occoquan or in the research lab on campus. Liz then worked as a medical technician at AAMC (when it was downtown Annapolis!) for 3 years and it was during this time that she decided to become a Physician Assistant.

Elizabeth Posoli graduated from Saint Francis University in Loretto PA in 1998. Her internships took her all over the country including a 10 week Family Medicine rotation on the Apache and Navajo reservations in North East Arizona. She met Dr. Ramona Seidel while they practiced family medicine together in Crofton in 2002. After she met her husband in 2005, she spent the next 8 years traveling for his Navy job and was able to work in Las Vegas, Philadelphia, and back to Washington, DC. It was in 2013 that she reunited with Dr. Seidel to join her practice and couldn’t be happier. They have always had a concerted and compassionate effort in taking care of patients.