Our Staff

Dr. Ron HendrixRon Hendrix M.D. FACEP

Medical Doctor at Sugarloaf Urgent Care in Lawrenceville, GA

Birth Place: Natchez, Mississippi

Education: B.S. Biology – Millsaps College – Jackson, MS (1975) | Doctor of Medicine – University of Mississippi Medical School (1979) | Family Practice Internship – University of Mississippi University Hospital (1979-1980) | Emergency Medicine Residency – Grady Hospital Emory University Residency Program (1982-1984)

Certifications: Board Certified-American Board of Emergency Medicine (1986) | Re-certification (1996, 2006)

Other Certifications:  ACLS | ATLS |PALS

Current Licensure: Alabama | Georgia | Mississippi | North Carolina


  • ESHAC Region VII Representative (1991-1999)
  • Medical Advisor, Talbot County CMC (1988-1999)
  • Medical Advisor, Med Life Ambulance Service (1990-1999)
  • Medical Advisor, BLS Subcommittee AHA (1991)

Professional Affiliations:

  • American College of Emergency Physicians (1986-present)
  • Muscogee County Medical Society (1984-present)
  • Columbus-Fort Benning Medical Association (1985-present)

Recent Hospital Affiliations:

  • Fairview Park Hospital – ED Medical Director (2012-present)
  • Jack Hughston Memorial Hospital – ED Medical Director (2006-2012)
  • Phoebe North – ER Staff Physician (2011-present)
  • Coliseum Northside Hospital – ER Staff Physician (2011-present)
  • Coliseum Medical Center – ER Staff Physician (2011-present)
  • Doctor’s Hospital – ER Medical Director (2001-2010)
  • Houston Medical Center – ED Staff (2001-2004)
  • Perry Hospital – ED Medical Director (1999-2004)
  • Medical Center Central Georgia – ED Staff (1990-1991 ) (1999-2010)


  • Christian Clinic (closed) – Medical Lab Technician (part-time) (1975-1976)
  • National Health Service Corp. – Medical Officer (1980)
  • Canton General Hospital (Madison County Medical Center) – ER Staff Physician (1980-1982)
  • National Health Service Corp. – Clinic Director (1980-1982)
  • Stone Mountain Minor ER Center – Staff Physician (1982-1984)
  • R.T. Jones Memorial Hospital – ER Staff Physician (1983-1984)
  • The Medical Center – Medical Director (1984-1999) ( 1987-1996) (1996-1999)
  • Delta Regional Medical Center (1987)
  • Humana Hospital Sunrise – ER Staff Physician (1986-1987)
  • Lackey Memorial Hospital (part-time) (1982)
  • West Georgia Medical Center – ER Staff Physician (1990)
  • Eastern Maine Medical Center – ER Staff (1990)
  • Riley Memorial Hospital – ER Staff (1990)
  • St. Dominic / Jackson Hospital (1993-1995)
  • Natchez Regional Hospital (1992)
  • Augusta Regional Medical Center – ER Staff (1992)
  • Phenix Regional Hospital – Temporary Medical Director (1994)

Olga M. Nen FNP-C

Board certification: American Academy of Nurse Practitioners (AANP)

South University, Savannah, GA: MSN/FNP

Olga brings an accomplished background in Medical-Surgical and critical care to the field of primary care. Since 2010 she has worked as a RN at Bon Secours St Francis Hospital, Greenville SC. After moving to Cumming, GA in 2017, she has worked as a critical nurse in the heart failure unit at Northeast Georgia Medical Center.

While serving as a RN, Olga attended South University‘s Family Nurse Practitioner Program. She graduated with a great GPA is excited to take care of patients as a board certified Family Nurse Practitioner. She likes to serve the community by helping patients achieve wellness through diseases prevention and management of chronic conditions.


Zafreen Nayani - Co-OwnerZafreen Nayani

Co Owner Sugarloaf Urgent Care in Lawrenceville, GA

Zafreen graduated from St. Mary’s University with a degree in International Business. She has been in the service business since she was 18 years of age. Zafreen has worked in the medical industry for close to 6 years. Her goal is to help everyone stay healthy at a reasonable cost and she feels fortunate to be able to do what she dreamed of.





Susan Dexter, FNP-BC

After graduating from the University of North Alabama in 1997, Susan spent over four years working full-time as an RN in a variety of hospital settings. Susan then graduated in 2001 from the University of Alabama at Birmingham, where she received her MSN. A practicing Family Nurse Practitioner since 2001, Susan brings extensive experience in emergency medicine, urgent care, internal medicine, and family practice. She is well-versed in emergent/urgent procedures, as well as disease management and health promotion. In her free time, Susan enjoys spending time with her 3 children.






Ronald Jett II, NP-C, FNP-BC

Originally from South Carolina, Ronald graduated from the University of South Carolina in Columbia, SC in 2008 with a Bachelors of Science in Nursing. Ronald practiced as an RN for over 6 years working full-time as an RN in a Critical Care, PACU, and the GI Lab while attending Family Nurse Practitioner School later years and Graduated from Augusta University in Augusta, GA in 2015.  His background and experience as an NP has been in the Urgent Care, Primary care, Retail-setting and experience working at the Health department of Dekalb County as a Volunteer and also at an local Indigent clinic. Ronald is an advocate in healthy living, exercise and outdoors activity promotion as possible; which he enjoys. Has been a resident of the Atlanta area for almost 10 years.