Our well trained and experienced staff is focused on making each patient’s visit to our clinic a personalized and attention oriented visit. We pride ourselves on offering quality treatments that are available without an appointment and being able to care for patients with speed and thoroughness. Our staff has extensive emergency care experience, they are sensitive to the needs of diverse age groups and especially attentive to the concerns of the elderly and children. We hand picked all our staff to ensure they are knowledgeable, caring, and professional in all aspects of their jobs. Due to our diversified staff at Briggs Chaney Walk-in Clinic, we are able to communicate with patients that speak English, Spanish, Farsi, Hindi, Tamil, Malayalam, Marathi, Telugu, Lgbo, Ga, Twi and Bengali.

Our staff has extensive emergency care experience, they are sensitive to the needs of diverse age groups and especially attentive to the concerns of the elderly, infants, toddlers and children. We hand pick all our staff to ensure they are knowledgeable, caring, and professional in all aspects of their jobs.

Dr. Ross Nassiri

Dr. Ross Nassiri

Dr. Ross Nassiri graduated from the University of Missouri with a bachelors of Science in Engineering. He then attended Ross University, school of Medicine and obtained his MD degree in 2001. Dr. Nassiri completed his residency training at the University of Rochester in NY and is board certified in Family Medicine. He has vast experience in Emergency Medicine, Urgent Care and Family Medicine. Dr. Nassiri is a Certified Medical Examiner for the U.S. Department of Transportation and a Designated Civil Surgeon for the USCIS. He is also an Assistant Clinical Professor at Georgetown University School of Medicine teaching 3rd and 4th year medical students.

Paula Naranjo

Paula Naranjo

Paula Naranjo has worked as Office Manger/Marketing Director at Briggs Chaney since February 2013. She comes with 14 years of experience in the Healthcare Industry with extensive experience in sales and marketing, government contracts, proposal preparation, client services, project management, cost analysis and human resources. When Paula is not working you will find her spending time with her two children, friends and family.

Chanise Isaac, PA-C

Chanise Isaac, PA-C

Chanise Isaac is a certified physician assistant at Briggs Chaney Walk-In Clinic. She is a graduate of Gannon University in Erie, Pennsylvania. Mrs. Isaac knew early in her life that she wanted to pursue a career in medicine, and has a special interest in women’s health and family practice. She prides herself on patient education, and aims to get her patients all the necessary resources they need to understand the topic at hand. Being a physician assistant is not just a career for Mrs. Isaac, it is her dream come true!

Chanise is from the Maryland area, and an alumni of St. John’s College High School in Washington, DC. In high school, she was a former varsity volleyball player. She is newly married, and is currently basking in the honeymoon phase. She enjoys spending time with her husband, family, and friends.

Melissa Previl, PA-C

Melissa Previl, PA-C

Melissa Previl is a Physician Assistant at Briggs Chaney Walk-In Clinic in Silver Spring Maryland. She is ACLS and BLS certified as well as a member in good standing with the American Association of Physician Assistants. Melissa is board certified with the National Commission on Certification of Physician Assistant.  Melissa is of Haitian decent and was born and raised in Long Island New York. She earned her Master’s in Physician Assistant studies May 2017 from Howard University. Melissa has the desire to help those in need, especially in an underrepresented community. In her free time Melissa enjoys spending time with family and friends, reading, and playing soccer.