Our Primary Care Providers

Dr. Davis was born and raised in South India where his parents served as teachers. After finishing high school, college, and medical school in Oklahoma city, he moved to Wichita to complete his family practice residency Wesley Medical Center in 1972. Following a stint in the National Health Service Corps, he returned to Wichita and has resided here since 1977.

As an advocate for developing better models of health care, Paul is co-founder of Primary Care Associates and founder of HopeNet, a non-profit agency serving individuals and families experiencing a wide range of crises.

He has served on several other community boards, including Envision, which provides unique services for the visually impaired. In 2007 he was awarded Kansas Family Physician of the Year.

Paul met his wife, Carol (a Wichita native) in college, was married in 1969, and is blessed with four sons and 11 grandchildren.

Paul's passions include building a close-knit family, developing better models of health care, great artwork, the study of science and faith, a better golf swing, home remodeling projects, reading, and travel.

His involvement in the community includes: HopeNet www.hopenetwichita.org caring for the wounded spirit, Envision www.envisionus.com - providing vision where sight is poor, Church - enjoying fellowship, faith, and spiritual nourishment, and PCA www.pca-wichita.com - excellence in health care for each patient.

Dr. Gillenwater was born and raised in Wichita, KS, graduating from Maize High School.

He is married with 2 children and enjoys spending time with his family, going for walks, and reading.

Education:
College: Newman University, Wichita, KS 2012
Medical School: University of Kansas School of Medicine-Wichita 2016
Residency: Family Medicine Residency at Wesley Family Medicine June 2019

Licenses, Specialties and Certifications:
American Board of Family Medicine
American Academy of Family Physicians

Recognition and Awards:
KU School of Medicine Apple Award 2016 – 2018
KAFP Hostetter Award 2015 – 2016
KU School of Medicine Wichita (KUSOM – Wichita) 2016 Class MVP 2012 – 2013
American Chemical Society, Outstanding Achievement in Chemistry Award 2011 – 2012
John Henry Cardinal Newman Scholarship 2007 – 2012

Memberships:
Gold Humanism Honor Society, 2015 – Present
Catholic Medical Association, 2014 – Present
American Academy of Family Physicians, 2013 – Present
American Medical Student Association, 2013 – 2016
American Medical Association, 2012 – Present
Kansas Academy of Family Physicians, 2012 – Present
KUSOM-Wichita Family Medicine Interest Group, 2012 – 2016

Professional Experience:
Primary Care Associates, LLC. 2019 to present
William Newton Hospital, Winfield, KS ER Physician 2017 - Present

He joined Primary Care Associates in July 2019, taking over for retiring doctor, Dr. Holmes established practice.

WELCOME Dr. Greer
JOINING PCA SEPTEMBER 6, 2022

Dr. Gregory G. Greer, MD, DABFP is board certified in Family Practice. Dr. Greer has a special interest in cross-cultural medicine after spending 15 years practicing medicine in Chiang Mai, Thailand as a member of the teaching faculty in the Family Medicine Department at Chiang Mai University Faculty of Medicine. He is fluent in Thai, but enjoys taking care of people from all over the world. He would love to hear your story and help you maximize your health!

Specialty: Family Practice Medicine

Education:
College: University of Kansas 1980
Medical School: University of Health Sciences, Kansas City Missouri 1986
Residency: Via Christi - St. Francis Campus Family Practice Residency 1990

Licenses, Specialties and Certifications:
American Board of Family Medicine
Advanced Trauma Life Support
National Board of Osteopathic Medical Examiners
American Academy of Family Physicians

​Recognition and Awards:
American Academy of Family Physicians, Fellow
Chief Resident at St. Francis Family Practice Clinic

Professional Experience:
Primary Care Associates, LLC. 2016 to present
Via Christi Clinic 1990 to 2015

Dr. Leiker was born in Garland, Texas, and moved to Wichita, KS during childhood. She attended grade school at St. Francis of Assisi, and is a graduate of Bishop Carroll High School.

Dr. Leiker pursued further education at the University of Kansas, where she majored in piano performance and chemistry. Her first job out of college was working as a chemist for Merck-Sharpe-Dome Laboratories in Lawrence, KS. She quickly learned that although she loved science, a laboratory setting lacked one thing: people. In the year before attending medical school, Dr. Leiker worked as a para-professional for a middle school music teacher where she was the staff accompanist and assisted in teaching music class. She also finished a third bachelor’s degree in biochemistry this year, as well. Both of these jobs helped shape her final decision to attend medical school at the University of Kansas.

In1999, Dr. Leiker met her husband, Mark two weeks after graduating from medical school. She began a residency in pediatrics, with plans to pursue a fellowship in neonatology. Through Mark, also a family physician, she was able to see what family medicine truly had to offer, and changed residency programs. Mark and Angela married in 2000, and had their first child in 2001. They now have five children, three boys and two girls. She joined Primary Care Associates in 2002.

Community involvement includes playing organ and piano at her home parish, Resurrection Catholic Church. She served on the Wichita Catholic Diocese board for the Safe Environment and Protection of children from 2007 to 2015. She is currently serving a board position that began in 2018 at the Starkey Corporation for Individuals with Developmental Disabilities.

Dr. Leiker’s passions include running, hot yoga, scuba diving with her husband and kids, and the occasional ski trip when her husband lets her go. She considers the opportunity to walk alongside a patient’s journey in life as the best part of family medicine.

Birthplace: Wichita, KS

Married to Angela Leiker, MD with five children

Education:

College: Wichita State University Wichita, Ks 1991

Medical School: KU School of Medicine Wichita, Ks 1995

Via Christi-Family Practice Residency Program 1998

Licenses, Specialities & Certifications:

Ks Board of Healing Arts,

Specialty-Family Practice

American Board of Family Practice

Recognition & Awards:

KU Student Teaching Award 1996,

KU Medical Student Research Scholarship 1992,

Endowment Scholarship 1991-94

Professional Experience:

Primary Care Associates, LLC Wichita, Ks 2001 to present

Private Practice Wichita, Ks 1998 to 2001

West Wichita Minor Emergency Wichita, Ks 1995 to 1998

Preferred Medical Associates-NE Wichita, Ks 1995 to1998

Community Interests/Involvement:

KSN Ask A Doctor 2000-2002

Heart Healthy Cooking-Family Health Channel 1999 KSN

KU Student Teaching Award 1996

Endowment Scholarship 1991-1994

Volunteer Work:

Chief Medic for Boyscout troops and staff at Philmont Scout Ranch 1994-95

WELCOME Dr. Ralston
JOINING PCA SEPTEMBER 12, 2022

Aubrey Ralston was born and raised in Wichita, graduating from Andover High. She continued her education at Kansas State University. A proud Wildcat, she graduated with a degree in Biology and minor in Leadership Studies. While at KSU, Aubrey married her husband, Michael.

Aubrey attended KU School of Medicine both in Kansas City and Wichita. After medical school, she and her family moved to Fayetteville, Arkansas for her Family Medicine residency. Following 3 years in Arkansas and the completion of residency, the Ralstons moved home to Kansas.

Dr. Ralston spent the next 4 years serving the community of El Dorado while practicing full-spectrum family medicine, including obstetrics.

She is licensed by the American Board of Family Medicine and a member of the American Academy of Family Practice.

Current community involvement includes Young Life Ministries and service projects through Hope Community Church, where she has attended since 2007.

In 2021, Dr. Ralston was awarded the Wichita Business Journal’s Excellence in Family Medicine Award.

Her goal is offer evidence-based practical care that follows patients across generations and lifetimes.

Outside of medicine, Aubrey enjoys spending time outside with her husband, three sons, and their loyal German Shepherd dog. She also enjoys hiking, reading murder mysteries, and watching Star Wars.