Physicians

Mary E. Keown, MD, FAAP

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Dr. Mary E. Keown is a Board-certified Pediatrician with Pediatric Associates of Davidson County since August, 1986. Dr. Keown did her undergraduate studies at Samford University, in Birmingham, AL. She graduated from University of Alabama of Birmingham School of Medicine, followed by internship and residency in Pediatrics at Vanderbilt University. Dr. Keown served as Chief Resident of Nashville General Hospital before joining Pediatric Associates.

Dr. Keown is an Associate Clinical Professor, Department of Pediatrics at the Vanderbilt School of Medicine, and a Medical Staff member of Baptist Hospital and Centennial Medical Center. She is also Pediatric Advanced Life Support certified.

Dr. Keown has served as Vice-Chair of Pediatrics, Centennial Medical Center; a member of the Board of Directors, Nashville Academy of Medicine; President of the Davidson County Pediatric Association, Board Member of the Tennessee Pediatric Society, and a Fellow of the American Academy of Pediatrics. She served as Chief of Pediatrics at Centennial medical Center for 3 years and is currently Vice-Chief.  

Dr. Keown received the James C. Overall Award for Teaching from Vanderbilt University, and is a member of Who's Who Best Medical Doctors in America.

Dr. Keown's favorite pastime is golf and is a great Auburn Tigers and Tennessee Titans fan. Dr. Keown is active in her church serving as an elder. 


William R. Davidson, MD, FAAP

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Dr. William R. Davidson is a Board-Certified pediatrician with Pediatric Associates of Davidson County since July, 1992. He graduated from the University of TN at Memphis School of Medicine followed by residency in Department of Pediatrics, University of Louisville School of Medicine.

Dr. Davidson is a Clinical Instructor with Monroe Carrell Children's Hospital, Vanderbilt Medical Center, Department of Pediatrics; Medical Staff member at Baptist Hospital and Centennial Medical Center. He is also Pediatric Advanced Life Support certified.

Dr. Davidson has served as Chief of Pediatrics and Vice-Chief of Pediatrics at Baptist Hospital. He is a Fellow of the American Academy of Pediatrics.

Dr. Davidson is married and has three children. He is active in his church, having served as a deacon. He has been on nine mission trips including 7 to Honduras, one to Keyna and one to Southern California. He is currently serving as an Adult Sunday School Teacher and in Children's Worship Services.

Dr. Davidson's hobbies include University of Tennessee VOLS, Titans football and Photography.

Dr. Davidson was voted one of Nashville's top physicians in the "Toast of Music City" Awards in 2009, 2010 and 2011.


Lori L. Amis, MD, FAAP

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Dr. Lori L. Amis is a Board-Certified pediatrician with Pediatric Associates of Davidson County since July, 1996. She received her Bachelor of Sciences, Psychology from Auburn University, and received her Doctor of Medicine from the University of Tennessee College of Medicine. Her internship and residency programs were at University of Louisville at Kosair Children's Hospital in Louisville, KY.

Dr. Amis is a Clinical Instructor at Monroe Carrell Children's Hospital, Vanderbilt Medical Center, Department of Pediatrics; a Medical Staff member of Baptist Hospital and Centennial Medical Center. She is also Pediatric Advanced Life Support certified.

Dr. Amis is a Fellow of the American Academy of Pediatrics.

Dr. Amis served as a Captain in the Medical Corp. of both the Kentucky and Tennessee National Guard. She is married with two children.

Dr. Amis plays Volleyball and is an avid Auburn Tigers fan.


David Wyckoff, MD, FAAP

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Pediatrician David A. Wyckoff, M.D., F.A.A.P., joined the staff of Pediatric Associates in August 2007. Dr. Wyckoff is a native of Nashville and a 1992 graduate of Montgomery Bell Academy. He received a bachelor's degree in molecular biology from Princeton University in 1996, and graduated Alpha Omega Alpha from the University of Tennessee College of Medicine in 2000.

Dr. Wyckoff recently completed seven years of active duty service as a pediatrician in the U.S. Navy Medical Corps as a lieutenant commander. He finished his residency in pediatrics in 2003 at Naval Medical Center San Diego and became a Fellow in the American Academy of Pediatrics later that year. Most recently from 2003 to 2007, he spent four years as a staff pediatrician at the Robert E. Bush Naval Hospital in Twentynine Palms, California, taking care of the children of active duty Marines, acting as a consultant on patients for the Family Medicine Department, and training staff in pediatric and neonatal life support. In 2007 he moved back to Nashville and joined Pediatric Associates of Davidson County.

Dr. Wyckoff is a Clinical Instructor with Monroe Carrell Children's Hospital, Vanderbilt Medical Center, Department of Pediatrics; Medical Staff member at Baptist Hospital and Centennial Medical Center. He is also Pediatric Advanced Life Support certified.  He is also a Fellow of the American Academy of Pediatrics.

Dr. Wyckoff is married and has two sons. His hobbies include baseball, running, and music. He currently sings baritone in and is the president of the Westminster Presbyterian Church Choir.


Dr. Mary Kay Bartek, MD, FAAP

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Dr. Mary Kay Bartek is a Board Certified pediatrician with Pediatric Associates of Davidson County, and is our most recent addition to our community patient care and medical home.  Dr. Bartek grew up in Gallatin, TN, and attended Gallatin High School and Harpeth Hall.  She received her Bachelor of Science from Haverford College, and her Doctor of Medicine from University of Washington School of Medicine.  Dr. Bartek did her Pediatric Residency at the University of Tennessee at LeBonheur Children’s Hospital in Memphis.

Dr. Bartek has practiced at LeBonheur Children’s Hospital Emergency Department and Urgent Care Centers and with Monroe Carell Jr. Children’s Hospital at Vanderbilt in Emergency Department and After-Hours Clinics.

Dr. Bartek is a Clinical Instructor at Monroe Carell Children’s Hospital, Vanderbilt Medical Center, Department of Pediatrics; a Medical Staff member of Baptist Hospital and Centennial Medical Center.  

Dr. Bartek is a Fellow of the American Academy of Pediatrics.  

Dr. Bartek enjoys traveling, running, baking, and reading with her cat, Hermione.


Darren Eisenhauer, PA-C, AT-C

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Darren Eisenhauer, Certified Physician Assistant, joined Pediatric Associates in August, 1999. Darren received his Bachelor of Science from Trevecca Nazarene University in 1998, and BS from Southern Illinois University at Carbondale in 1991. He was Board Certified Physician Assistant in 1998 and Board Certified Athletic Trainer in 1991.

Darren is a member of the American Academy of Physician Assistants and The National Athletic Trainers Association.

Darren is married and has two children. He enjoys fishing, golfing, and is an avid Titans fan.


Rebecca Reveal PA-C

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Rebecca Reveal received her MS in Medicine from Trevecca Nazarene University in 2006 earning an Eagle Award for academic acheivement. Her final clinical rotation took her to a missionary hospital in the highlands of Papua New Guinea. She was valedictorian of her class of 1996 for her BS in Biology at Randolph-Macon Woman's College and received a MA in Humanistic Psychology from Sonoma State University in 2000. Rebecca is married and has two children.  Her hobbies include gardening, knitting, rock climbing camping and playing outside.