
A Trailblazer's Path is Rarely a Straight Line - Kathern Plenge, MD
By Dominique Perkins, Associate Editor, Arizona Physician
Photography by Noble Pictures, jeffnoblepictures.com
Dr. Kathey Plenge couldn’t have predicted how her life would take shape. However, looking back, she wouldn’t have it any other way.
Physician, neurologist, trailblazer, mother, master docent, leader, philanthropist, survivor and the first woman president of the Maricopa County Medical Society (MCMS), her self-described “circuitous route” stands as a testament to the power of seizing every opportunity—as well as making a few of your own—and following where passion and curiosity lead you.
A JOURNEY OF OPPORTUNITY
Born on a little farm in Tennessee, the youngest of 8 children, Kathern Plenge, MD, had never heard of a woman doctor. In college, she began by studying home economics—skills she had developed growing up. But as she followed her interests and expanded her curriculum, adding courses in science, language and liberal arts, Plenge found many of her classes included the same classmates—boys preparing for medical school.
It didn’t take her long to realize: “I’m taking all the same courses they are, maybe I can be a doctor too,” she said. At the time, women made up only 1-2% of medical school students. Plenge recalls a skeptical academic counselor who called her goal to apply “rather ridiculous.”
She was accepted to the University of Tennessee College of Medicine and loved every minute of it. “It was just fascinating,” she said. “I loved it from the very beginning.” Dr. Plenge accepted a pediatric residency in Tennessee. However, because she graduated in December rather than June, and because she is not the type to let the grass grow under her feet, she took a job as an ER physician at a community hospital in Florida for six months until her residency began. And here her life took another turn.
“That’s where I met my husband, and that, of course, changed my life,” she said.
She gave up the residency and stayed on at the community hospital for two years, then moved to Virginia while she was expecting her first child.
Staying home for the months of her pregnancy and childbirth was a challenge for Dr. Plenge, who said she had never in her life gone so long without working. So, when her daughter’s pediatrician told her of a job opening during a three-month check-up, she leapt at the chance.
She worked in the county health department and pediatric practice, and when her husband accepted a job in Phoenix, Arizona, Plenge didn’t waste any time—she called up the local public health department and said, I’m here, and I’m ready to work!
Working part-time allowed her to also be at home with her two young children. When she decided she was ready to specialize, she approached several colleagues and program directors and arranged opportunities for part-time work or job shadowing to explore the available programs.
Neurology captured her attention—she described it as both fascinating and terrifying— and she applied for and was accepted to the Barrow Neurological Institute residency program.
She described the transition from professional medicine back to academics as a steep learning curve, and not one she would necessarily recommend. But the experience that she had gained gave her a wealth of information, and she thoroughly enjoyed neurology. So much so that she stayed with Barrow until she retired in 2001.
“Barrow was a wonderful training program,” she said. “I felt very lucky that I could do a residency there.”
TAKING ON NEW ROLES AND CHALLENGES
As she continued on her path, she stayed open to new opportunities to learn, grow, and connect.
She was active in organized medicine. In 1984 she became the first woman president of the Maricopa County Medical Society (MCMS) and remains an active member to this day.
A huge supporter of Continuing Medical Education, she appreciates the work MCMS puts into offering new CME opportunities to its members, as well as reaching out to include medical students in the work.
“I always thought it was important to support institutions that support you,” she said.
She served as medical director for the Neuro-Rehabilitation Unit at Barrow for ten years. She also worked with CARF International, an independent nonprofit accreditor of health and human services, which gave her the opportunity to connect with other rehab institutes, as well as the satisfaction of helping ensure that rehab facilities remained certified.
As she prepared to retire, she knew she wanted to find additional interests that would sustain her after leaving an all-consuming profession like full-time medicine. Having always loved art, she completed the Phoenix Art Museum’s Docent training program. She gave her first private tour to her wonderful staff at Barrow, thanking them for their role in supporting her through her Docent training. After retiring, she served in this role for over 22 years, as is now a Master Docent.
She also devoted time to philanthropy and research organizations, raising funds for pediatric research and PhD scholarships. She currently serves on the board of ARCS—Achievement Rewards for College Scientists and is active with PANDA—People Acting Now Discover Answers.
Three years ago, a major challenge emerged to shake the peaceful productivity of her retired life: she was diagnosed with triple-negative breast cancer. With no targeted therapies available, she underwent chemotherapy and radiation—a grueling treatment process.
“It’s a frightening experience,” she said. “But a great network of friends and great doctors took good care of me.”
Today, she is healthy, and grateful for a full life, a fulfilling professional calling, and all the choices and opportunities that led her here.

DECADES STUDYING THE BRAIN
Plenge’s remarkable career spanned decades and witnessed near-astonishing advances in medical technology, including revolutionary diagnostic and imaging tools and new research examining the relationship between genetics and neurological diseases.
“Early on we barely had CAT scans, and not MRIs,” she said. “MRI scanning changed the way you looked at things, the way you could see things.”
1990-1999 was christened The Decade of the Brain, reflecting a national interagency initiative to enhance public awareness of the benefits inherent in diligent, methodical brain research. She keeps herself informed on new developments, technologies and techniques, and is excited for the possibilities the future holds, particularly new breakthroughs in Alzheimer’s detection and treatment.
“The genetic markers that they are finding in blood and spinal fluid for some of the diseases are amazing,” she said.

EMBRACING FUTURE CHANGE
Looking forward to the future of medicine and healthcare, Plenge sees plenty of reason for optimism, despite challenges. Exciting breakthroughs in diagnosis and treatment are on the horizon, and, as Artificial Intelligence tools become more commonplace, she thinks it will be interesting to watch how it is implemented, and what safeguards will be necessary to ensure it remains some help instead of a hindrance.
“Medicine is changing,” she said. “But it always has been changing.” What will not change, she says, is the desire to be a physician.
Holding on to that desire is a key part of Dr. Plenge’s advice to medical students and newly practicing physicians as they learn to navigate a challenging and ever-changing healthcare landscape.
“You have to love it, to really want it—because it’s not easy,” she said. Rigorous training, long hours, heavy responsibility and significant pressure are all a part of the same package as the joy of discovery and the satisfaction of helping others heal. She also stressed the importance of cultivating a well-rounded life—building a support system, taking what time, you can to care for yourself, and developing interests outside of medicine.
“Medicine can’t fulfill everything,” she said. As a last piece of parting advice, she reminds us of all to keep our eyes open, watch and learn. Opportunity might bring something you hadn’t thought of before—like it did for her. â–
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ABOUT THE AUTHOR
Dominique Perkins serves as Associate Editor for Arizona Physician.