Expert Care from a Trusted Team of Providers
Our Dedicated Team of Providers

Dr. James Barton
Doctor of Medicine


James Barton, MD, is a native of Jasper, Alabama. He graduated from Walker High School, Walker College, and The University of Alabama, where he earned a Bachelor of Science degree. In 1995, he received his Doctor of Medicine degree from The University of Alabama School of Medicine. Dr. Barton completed his Internal Medicine Residency at The Baptist Health System, training at Princeton and Montclair Medical Centers in Birmingham, Alabama, in 1998. He has been board-certified in Internal Medicine since 1999 and is a member of:
- The American Board of Internal Medicine
- The American College of Physicians
- The American Diabetes Association
- The Medical Association of the State of Alabama
- Phone:205-221-6758

Dr. Jennifer Beasley
Doctor of Medicine
Dr. Jennifer Beasley was raised in Huntsville, Alabama, but spent much of her childhood visiting Walker and Winston counties, where she fell in love with the area. She earned her undergraduate degree from Samford University and her medical degree from the University of South Alabama.
Dr. Beasley completed her Internal Medicine residency with a focus on Primary Care at the University of Kentucky in Lexington, KY. She is board-certified through the American Board of Internal Medicine.
Since returning to Alabama in 2017, Dr. Beasley has called Jasper home. When she is not at work, she enjoys spending time outdoors with her husband and three children.
- Phone:205-221-1516

Dr. J. Ty Blackwell
Doctor of Medicine
Dr. Blackwell is a graduate of The University of Alabama in Tuscaloosa, where he earned a Bachelor’s degree in Biology and a Master’s degree in Health Sciences. He obtained his medical degree from UAB School of Medicine in 2005.
Dr. Blackwell completed his Family Medicine residency at the Tuscaloosa Family Residency Program, graduating in 2008. Afterward, he returned to his hometown of Jasper, Alabama, where he has practiced as a Family Physician for over 15 years.
Dr. Blackwell lives in Jasper with his wife and two children.
- Phone:205-387-8159

Dr. Candice Terry Hagler
Doctor of Medicine
Dr. Candice Terry Hagler is a board-certified Family Medicine physician. A native of Lawrence County, she earned her undergraduate degree from Jacksonville State University. In 2005, she graduated from The University of Alabama School of Medicine and completed her residency at The University of Alabama Tuscaloosa Family Medicine Residency Program in 2008.
Dr. Hagler joined Walker Medical Diagnostics in 2011 and continues to serve the community. She is a member of First Baptist Church of Jasper and enjoys spending time with family and friends.
- Phone:205-387-8159

Dr. Claude Osula
Doctor of Medicine
Dr. Claude Osula is a board-certified Internist and a founding physician of Walker Medical Diagnostics.
He completed his Internal Medicine residency at St. Agnes Hospital in Baltimore, Maryland, and pursued an additional 18 months of Nephrology fellowship at UAB in Birmingham. His areas of interest include:
- Hypertension and heart disease
- Chronic kidney disease
- Diabetes mellitus
- Geriatrics
Dr. Osula is married and the proud father of three children, all of whom are physicians. He enjoys outdoor activities, particularly hiking and biking.
- Phone:205-295-4200

Dr. Sonja Pettus
Doctor of Medicine
Dr. Sonja Pettus obtained her Doctor of Medicine degree from The University of Alabama School of Medicine in Birmingham and completed her Internal Medicine residency at Physicians Medical Center Carraway. She joined Walker Medical Diagnostics in 2007.
Dr. Pettus specializes in treating diabetes, chronic kidney disease, hypertension, and other adult acute and chronic conditions.
A native of Selma, Alabama, she lives in Jasper and enjoys thrift and antique shopping, camping, traveling, and spending time with her husband and children.
- Phone:205-295-4200

Dr. Emily Williams
Doctor of Medicine
Dr. Emily Williams received her undergraduate degree from The University of Alabama in 2000 and her medical degree from The University of Alabama School of Medicine in 2005. She completed The University of Alabama Tuscaloosa Family Medicine Residency Program in 2008.
A native of Monroe County, Dr. Williams joined Walker Medical Diagnostics in 2013. Her favorite pastime is spending time with family and friends.
- Phone:205-295-4290

Amanda Barton
FNP-C
- Graduate of Curry High School
- Associate Degree of Applied Sciences in Nursing – Bevill State Community College (2003, Registered Nurse)
- Bachelor of Science in Nursing – University of North Alabama (2011)
- Master of Science in Nursing – University of Alabama Huntsville (2014, Family Nurse Practitioner)
- Registered with the Alabama Board of Nursing
- Board-certified through the American Association of Nurse Practitioners
Amanda is married to Dr. James Barton and lives with their four children and three dogs.
- Phone:205-221-6758

Lisa King
FNP-C
Lisa King is a board-certified Family Nurse Practitioner. She earned her BSN from Jacksonville State University and her Master of Science in Nursing from The University of Alabama in Tuscaloosa.
Lisa joined Walker Medical Diagnostics in 2024. A native of Jasper, she is passionate about serving her community. She enjoys traveling and spending time with family and friends.
- Phone:205-387-8159

Taylor Lightsey
DNP, FNP-C
Taylor Lightsey is a board-certified Family Nurse Practitioner (FNP) through the American Academy of Nurse Practitioners. She earned her Doctorate in Nursing Practice (DNP) from The University of Alabama at Birmingham, where she was an active member of the Rural Primary Care Scholars program, which focuses on increasing healthcare access in rural and underserved communities.
With nine years of experience as a registered nurse across various specialties, Taylor is dedicated to providing high-quality care.
Raised in Walker County, Alabama, she looks forward to serving her community. In her spare time, she enjoys reading and spending time with her family.
- Phone:205-221-1516

Tiffany Oliver
AGNP-C
Tiffany Webb Oliver is a board-certified Adult-Gerontology Primary Care Nurse Practitioner with over 12 years of healthcare experience.
A native of Senatobia, Mississippi, she has lived in Jasper, Alabama, since 2010 and has become a trusted healthcare professional in the community.
Tiffany is a devoted wife to Eric and a loving mother to their two children, EJ and Marleigh. Outside of work, she enjoys spending time with her family and participating in activities that promote health and wellness in her community.
- Phone:205-221-1516
Connect With An Expert At Walker Medical Diagnostics
Walker Medical Diagnostics is committed to providing exceptional primary care and advanced diagnostic imaging with expert physicians and advanced technology.
Phone
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Address
1450 Jones Dairy Rd # 600
Jasper, AL 35501