Peter B. Hardin MD, MS, BS | Speciality: Radiation Oncologist


Beginning first as an engineer, Dr. Hardin graduated with three degrees in engineering, both electrical and biomedical, from the University of Illinois Urbana-Champaign before entering medical school.  He pioneered surface coil designs for magnetic resonance imaging (MRI) equipment which are currently being used today to save patient’s lives.  He entered medical school to continue to further design medical equipment.  He found however that he could apply his background in engineering to the complexities and challenges of cancer therapy making radiation oncology a demanding specialty for which he is uniquely qualified.


Dr. Hardin graduated from the University of Illinois College of Medicine.  He completed his residency at Rush-Presbyterian-St Luke’s Medical Center in Chicago.  During residency, he continued doing research in radiation oncology, becoming published in both text books and journals for breast and lung cancer.  He has been on staff doing teaching and research at Case-Western Reserve University, University of Illinois, and Michigan State University, and worked for a not-for-profit foundation before entering private practice in Kentucky in 2008.


He is board certified in Radiation Oncology by the American Board of Radiology, having recertified in 2008.  His clinical experience includes: intensity modulated radiation therapy (IMRT), 3D conformal radiation therapy, stereotactic radiosurgery, brachytherapy, coronary brachytherapy, prostate brachytherapy, high dose rate (HDR) brachytherapy, and the use of various radioisotopes, including I-131 for thyroid cancer.  He is active in ASTRO, ABR, ACRO, ECOG and serves on Taylor Regional Hospital’s cancer committee, radiation safety committee, and tumor board.

Kelly | Registered Nurse, ADN


Kelly is the Radiation Oncology Nurse at TRRO.  Kelly earned her associate’s degree in nursing from Midway College in 1999.  Prior to coming to TRRO in 2016, Kelly had a long career as a circulating nurse/charge nurse/clinical coordinator in hospital surgery. She also has experience in medical-surgical as well as labor and delivery nursing, with over 18 years of nursing practice. 

As a team member of TRRO, Kelly is the person who will help each patient navigate through the process of Radiation Therapy from the first visit, throughout treatment and into recovery and survivorship.  Kelly is the link in the communication chain to the other staff and physicians for the education and support of each patient.  In her role as the radiation oncology nurse, Kelly will ensure that each patient’s need is addressed in a timely manner.  Her primary goal is providing the highest level of support and care to each and every patient.

Kelly was born and raised in Lebanon, KY where she continues to live with her family.  She enjoys spending time with family and friends and does some occasional cake baking on the side.

Deetra | Radiation Therapist R.T. (R)(T)


Deetra is a Radiation Therapist receiving her Associate Degree from St. Catherine College in Radiologic Technology.  Deetra is also certified as a Radiation Therapist from the James Graham Brown Cancer Center.  She is one of our original employees who began at the Cancer Center in 2005.  Deetra and the other therapist(s) perform the daily radiation treatments as well as the CT simulation scans.

Deetra enjoys the technological aspects of being a therapist as well as the hands-on care that she gives to each patient.  Patients at TRRO see a therapist every day and her goal is to make the treatment visit as uplifting and supportive as possible. Deetra makes each patient feel comfortable from their first day of treatment until their last. She strives to make a patient’s radiation journey a positive one. 

Deetra grew up and continues to live in Lebanon where she enjoys spending time with family and friends.  Deetra also enjoys the outdoors.

Marie | Radiation Therapist R.T. (R)(T)


Marie has an associate’s degree in Radiologic Technology that she received from Lexington Community College.  Marie also obtained her certification as a Radiation therapist from the University of Kentucky.  Marie came to TRRO in 2016 bringing with her over 10 years of radiation therapy experience.  This experience along with her education brought a wealth of knowledge to TRRO in working with the physician’s, physics and dosimetry personnel.  Marie and the other therapist(s) perform the daily treatments as well as the CT simulation scans.

Marie always has a smile on her face and likes the warm, friendly and professional atmosphere at TRRO.  Marie makes patients feel comfortable and helps alleviate their fears and concerns while undergoing radiation. 

Marie and her family reside in Russell Springs, Kentucky.  She enjoys spending time with family and friends and doing crafts in her free time.

Tammy | Radiation Oncology Coordinator / Medical Records


Tammy is a graduate from Western Kentucky University with a Bachelor’s of Science Degree.  Tammy is one of the original employees of the Cancer Center, beginning her career here in 2005.  Tammy is in charge of scheduling appointments, ensuring all paperwork is complete and charts are up to date.  She also takes care of insurance pre-certifications and is a liaison for the billing company. Tammy is the person who will make referral appointments and assists the other staff and physician’s in anything they may need. 

Tammy’s upbeat and cheerful demeanor make a patient’s initial appointment a warm and pleasant one.  She enjoys meeting and greeting patients along with their family members.  Tammy feels that giving the best support and care to each patient is a top priority.

Tammy grew up in Larue County and resides in Campbellsville.  She enjoys spending time with her family and friends.  She also enjoys walking and antiquing in her spare time.

Tim | Administrator


Tim worked with the physician’s and staff of the Brown Cancer Center and Taylor Regional Hospital to bring Radiation Oncology to the Campbellsville and surrounding community in 2005.  He has experience of over thirty years in medical management and private business. Tim provides TRRO with the leadership that is needed in today’s ever-changing healthcare environment.

Tim enjoys working with the physician’s and staff to ensure that the facilities, equipment and finances are in place to achieve the goal of providing the optimum in patient care and support that is obtainable.   He is very “hands on” in his style of management and believes in leadership by example.

When away from TRRO is and his wife take pleasure in family, friends and like to travel.

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