Location(s): Marysville , Westmoreland, Frankfort, Centralia, Onaga, Holton, St. Marys
Preventive Healthcare, Inspired by You
At Community HealthCare System, we are dedicated to putting your well-being first. We understand the importance of timely and convenient access to health screenings – after all, early detection is your best defense against cancer and other diseases. That's why we make it easy to schedule and receive screenings when and where you need them.
Learn more about the screenings available at CHCS and make an appointment for the screenings you and your family need today:
Colonoscopies: Colorectal Cancer Screening
Colorectal cancer stands as the second-leading cause of cancer-related deaths in America. However, there is promising news: Thanks to an increasing number of individuals getting screened on time, the incidence rate is on the decline.
That’s a testament to the power of colonoscopies, especially because these screenings can do more than detect colon cancer—in many cases, they can prevent it as well. That’s because pre-cancerous polyps are removed as part of the screening.
If you are age 45 or older – or younger with a family history of colorectal cancer – ask your primary care provider today about scheduling a colonoscopy.
Mammograms: Breast Cancer Screening
When breast cancer is detected early, it is highly treatable. Mammograms are the most important tool in early detection. Our advanced 3D digital mammography takes only a few minutes and can detect tumors before a patient would feel a lump or notice symptoms.
Our board-certified radiologists use state-of-the-art monitors to read and interpret mammogram results. Women should begin annual mammograms at age 40 or earlier if you have high-risk factors or a family history of breast cancer. Your primary care provider can perform an in-office risk assessment to determine your need for early mammograms.
To schedule a mammogram, call 785-889-4272, ext. 2102.
DEXA Scan: Osteoporosis Screening
Too often, breaking a bone is someone’s first clue they have osteoporosis. To diagnose osteoporosis before injury occurs, screening is key. The sooner you’re diagnosed, the faster you can receive treatments that decrease the effects of osteoporosis. A DEXA scan uses imaging to measure bone density, which provides information about your risk or current status related to osteoporosis.
Screening for osteoporosis is generally recommended for women age 65 or older and men 70 or older. If you have certain risk factors, screening may be recommended sooner. Talk to your doctor for more information.
To schedule your osteoporosis screening, call 785-889-4272, ext. 2102.
Screening for Hepatitis C (Blood Test)
Hepatitis C affects the liver. Doctors use a simple blood test to determine if you have ever had the hepatitis C virus. The blood test looks for antibodies that are released in the blood when someone is infected with the hepatitis C virus.
Our laboratory provides convenient, quality services to support you and your care providers in checking your health and catching issues early. Discuss any risk factors you may have for Hepatitis C with your primary care provider to determine if testing is right for you.
To schedule a Hepatitis C test, call 785-889-4272, ext. 2102.
Abdominal Aortic Ultrasound
The aorta is the main artery that carries blood from your heart. An abdominal aortic aneurysm (AAA) is a bulge that can form in the aorta, particularly in the abdomen. AAAs can grow slowly without symptoms, but they can burst and cause internal bleeding, which can be life-threatening.
An ultrasound is used to detect AAA – and if detected early, AAA can be treated before a rupture occurs. Both men and women can have AAA, but it’s much more common in men. If you’re a man aged 65-75, and you’re a current or former smoker, talk to your primary care provider to see if this screening is recommended for you – especially if you’re experiencing back or side pain.
To schedule, call 785-889-4272, ext. 2102.
Skin Cancer Screening
Skin cancer is the most common type of cancer, so prevention is key (sunscreen and limited sun exposure). However, if you do get skin cancer, it’s most treatable when detected early – which means annual screenings are also important.
Skin cancer assessments are non-invasive and can be completed in just a few minutes during a routine primary care visit. You should also keep an eye out for any new spots on your skin that look different from others or are changing, itching, or bleeding. If you notice any of these symptoms or wish to schedule a skin cancer screening, contact your primary care provider.
Low-Dose CT Scan: Lung Cancer Screening
You can have lung cancer before showing symptoms. If you’re a smoker, screening is important because detecting lung cancer early, when it is easier to treat, can prevent the disease from spreading. Adults between 50-77 with a history of smoking should ask their primary care provider about lung cancer screening.
Our imaging department offers a low-dose CT scan that takes multiple images of your lungs in as little as fourteen seconds. The fast-scanning capabilities and advanced image quality provide a quick and accurate diagnosis.
To schedule, call 785-889-4272, ext. 2102.

Marcus Weiser, DO
Family Medicine
Location: Onaga
Position: Physician
Medical Services: Birth Center, Diabetic Care, Emergency Department, Family Medicine, Health Screenings, Medical & Surgical Care, Men's Health, Senior Care, Youth Services, Women's Health
Marcus Weiser, DO
Dr. Marcus Weiser is passionate about the variety and connection that come with rural family medicine. A Bethany College graduate, he earned his medical degree from Kansas City University and completed his residency—serving as chief resident—at Via Christi in Wichita. Board-certified in family medicine, Dr. Weiser also performs C-sections, colonoscopies, EGDs, and obstetrics. He loves teaching future physicians and serves as a clinical assistant professor and preceptor for two medical schools. Originally from northwest Kansas, Dr. Weiser now lives in Onaga with his wife and five children. Outside of work, you’ll often find him with his family, coaching youth sports, or enjoying a round of golf.
Nancy J. Zidek, MD
Family Medicine
Locations: Frankfort, Onaga, Holton
Position: Physician
Medical Services: Birth Center, Diabetic Care, Emergency Department, Family Medicine, Health Screenings, Men's Health, Senior Care, Youth Services, Women's Health
Nancy J. Zidek, MD
Compassionate, steady, and deeply rooted in Kansas, Dr. Nancy Zidek brings decades of experience and a personal touch to family medicine. A graduate of the University of Kansas with degrees in microbiology and medicine, she completed her residency at Wesley Family Practice in Wichita. As a second-generation physician, Dr. Zidek was inspired early on by her father’s 40-year career in rural medicine. She carries that same passion into her own work—especially in women’s health. Dr. Zidek loves getting to know families over time and finds great joy in watching her youngest patients grow up under her care. She and her husband, Paul and enjoy traveling when they can. Their daughter, Bethany, is following in her footsteps and currently completing her family medicine residency at Ascension Via Christi in Wichita. Their son, Elijah, is working in Kansas City. When she’s not in clinic, Dr. Zidek can often be found tending to her hummingbird feeders, doting on her two spoiled rescue dogs, or planning their next getaway.
Andrew Barnes, APRN‐C
Family Medicine
Location: Onaga
Position: Advanced Practitioner
Medical Services: Diabetic Care, Emergency Department, Family Medicine, Health Screenings, Men's Health, Senior Care, Youth Services, Women's Health
Andrew Barnes, APRN‐C
Andrew Barnes, APRN, holds a bachelor of science in nursing from Baker University and a master of science in nursing from Washburn University. He is certified by the American Academy of Nurse Practitioners and is a board-certified emergency nurse. He takes a special interest in emergency medicine, trauma, and acute care. Barnes was drawn to medicine through his father’s encounters with healthcare providers who always amazed him. He lives in Wheaton with his wife and three children, and he enjoys being outdoors with his family. They enjoy caring for cattle as well as dogs and barn cats.
Nancy Bosse, APRN‐C
Family Medicine
Locations: Onaga, Westmoreland
Position: Advanced Practitioner
Medical Services: Diabetic Care, Emergency Department, Family Medicine, Health Screenings, Men's Health, Senior Care, Youth Services, Women's Health
Nancy Bosse, APRN‐C
Nancy Bosse, APRN-C, holds a bachelor of science degree in nursing from Washburn University and a master of science in nursing-family nurse practitioner degree from the University of Missouri-Kansas City. Bosse worked in critical care, neurology, trauma, and general surgery for 20 years at Saint Luke’s Hospital in Kansas City. Her areas of clinical interest are women’s health, pediatrics, and geriatrics, and she loves family practice because it allows her to help patients while getting to know them and their entire family. Bosse says the most important thing patients can do is to “let us know if you are not getting better. Follow up so we can help you!” Bosse grew up in Onaga and now resides in Wamego with her husband and two children. When not at work, she enjoys attending kids’ activities, being outside, gardening, and helping at the farm.
Julia Ingwerson, APRN‐C
Family Medicine
Location: St. Marys
Position: Advanced Practitioner
Medical Services: Diabetic Care, Family Medicine, Health Screenings, Men's Health, Senior Care, Women's Health
Julia Ingwerson, APRN‐C
Julia A. Ingwerson, APRN-C, holds a bachelor of science in nursing degree from Washburn University and a master of science in nursing from Wichita State University. She is certified by the American Nurses Credentialing Center as a family nurse practitioner. Ingwerson takes a special interest in foot care and orthopedics. Ingwerson enjoys seeing patients at all different ages and stages of life. She lives in St. Marys. When not at work, Ingwerson enjoys crocheting and spinning.
Amanda Rempe, APRN
Family Medicine
Location: Centralia
Position: Advanced Practitioner
Medical Services: Diabetic Care, Family Medicine, Health Screenings, Men's Health, Senior Care, Women's Health
Amanda Rempe, APRN
Amanda Rempe has deep roots in the community she now serves as a family nurse practitioner. Born and raised in rural Kansas, Amanda has been connected to Community HealthCare System her entire life—as a patient, a nurse, and now as a provider. Amanda earned her Bachelor of Science in Nursing from Washburn University in 2015 and began her career in emergency medicine at Stormont Vail. She soon returned home to CHCS, where she spent six years caring for patients in the hospital setting. In 2021, she completed her Doctor of Nursing Practice at Washburn and transitioned to the role of APRN. For Amanda, healthcare is personal. “I became a nurse practitioner because I wanted to make a meaningful difference in the community where my friends and family live,” she says. “It’s an honor to walk alongside patients and help them make healthcare decisions that align with their goals.” Amanda is board-certified as a Family Nurse Practitioner (FNP-BC) and is passionate about improving quality of life through personalized, compassionate care. She values the strong relationships she builds with her patients and believes that investing in your health is one of the best decisions you can make. Outside of work, Amanda enjoys reading and spending time with her family. She and her high school sweetheart, Kyle, live outside of Frankfort with their five children—Josie, Kash, Colt, Elsie, and Banks. She’s proud to be raising her family in the same close-knit community that raised her—and just as proud to care for her neighbors at CHCS.
Jana Kramer, PA‐C
Family Medicine
Location: Holton
Position: Advanced Practitioner
Medical Services: Diabetic Care, Family Medicine, Health Screenings, Men's Health, Senior Care, Women's Health
Jana Kramer, PA‐C
Friendly, grounded, and deeply committed to her community, Jana Kramer, PA-C has been serving patients across Community HealthCare System since 2001. Raised on a farm in northwest Kansas, she moved to the Seneca area 20 years ago with her husband, Joe, and has made northeast Kansas home ever since. Jana earned her Bachelor of Science from Kansas State University and graduated summa cum laude with her Physician Assistant degree from Wichita State University. She is board-certified by the National Commission on Certification of Physician Assistants and maintains certifications in Advanced Cardiac Life Support and Pediatric Advanced Life Support. Jana enjoys practicing family medicine because of the variety of patients and the relationships she builds across generations. Whether it’s helping a child through their first checkup or supporting adults as they work toward health goals, she takes pride in providing thorough, compassionate care. Outside of the clinic, Jana finds joy in spending time with her family and friends, playing piano, going to movies, and cheering at local sports events. She’s also been an active volunteer in her church, schools, and the Make-A-Wish Foundation. Jana and Joe have six children—Chase, Cole, Zachary, twins Cooper and Carter, and Kenly—and love being part of a vibrant rural community.
David Allen, MD
Family Medicine
Location: Holton
Position: Physician
Medical Services: Birth Center, Diabetic Care, Emergency Department, Family Medicine, Health Screenings, Medical & Surgical Care, Men's Health, Senior Care, Youth Services, Women's Health
David Allen, MD
Friendly, thorough, and passionate about caring for families, Dr. David Allen brings decades of experience to Holton Family Health Center. He earned his medical degree from the University of Kansas School of Medicine after completing his undergraduate studies at Kansas State University, then trained in family medicine at Via Christi Regional Medical Center in Wichita. Dr. Allen provides comprehensive care for all ages, with special expertise in obstetrics (including C-sections), pediatric care, and gastrointestinal procedures.. Whether he's welcoming a new baby into the world or helping a patient manage chronic conditions, Dr. Allen is committed to building long-term relationships and improving lives through compassionate, whole-person care.
Emma Beck, MD
Family Medicine
Locations: Holton, St. Marys
Position: Physician
Medical Services: Birth Center, Diabetic Care, Family Medicine, Health Screenings, Men's Health, Senior Care, Youth Services, Women's Health
Emma Beck, MD
Dr. Emma Beck earned her Bachelor of Science in Biology with a Minor in Spanish from Oklahoma Baptist University. She went on to complete her medical degree at the University of Kansas Medical School, followed by residency training at Via Christi Family Medicine, where she also completed the Osteopathic Recognition Track. She is currently eligible to sit for the Family Medicine-Obstetrics boards. Dr. Beck’s clinical interests include women’s health and obstetrics, international medicine, and point-of-care ultrasound. Her passion for medicine was sparked early in life, inspired by her mother’s example as a dedicated veterinarian serving their local community. That calling grew into a desire to serve vulnerable and underserved populations—both in rural areas and abroad—with a human-focused, hands-on approach (minus the paws). What Dr. Beck loves most about practicing medicine is getting to know each patient’s unique story. She values the opportunity to partner with individuals and families on their path to wellness, celebrating their milestones and helping them achieve health goals based on what matters most to them. She also appreciates the ever-changing nature of medicine and the learning that comes with every patient encounter. She is also bilingual in Spanish, which enhances her ability to care for diverse patient populations. Originally from Eudora, Kansas, Dr. Beck chose to stay in-state to give back to the place that played such a key role in her education and training. She now lives in Mayetta with her husband, four children, and their Husky, Tiggr. When not at work, you’ll likely find her outside—playing sports, taking walks, working in the yard, or relaxing in her hammock. She’s excited to be living closer to family and looks forward to many backyard gatherings and outdoor adventures. There may even be chickens in their future!
Nicholas Cahoj, MD
Family Medicine
Location: Westmoreland
Position: Physician
Medical Services: Diabetic Care, Family Medicine, Health Screenings, Men's Health, Senior Care, Youth Services, Women's Health
Nicholas Cahoj, MD
Dr. Nicholas Cahoj graduated from Kansas State University and the University of Kansas School of Medicine. He completed his residency at Via Christi Family Medicine in Wichita. Dr. Cahoj grew up in Atwood, Kansas. He appreciates family practice. "I enjoy the relationships that I get to build with patients and their families. I also enjoy the broad array of conditions that I see and treat," he said. He performs esophagogastroduodenoscopies (EGDs) and colonoscopies. He enjoys teaching students and is a clinical assistant professor for the University of Kansas School of Medicine- Wichita. Dr. Cahoj and his wife, Alyssa, have three daughters who they enjoy helping in their sports and activities. He also likes watching sports, hunting/shooting, and playing golf. .
Collin Connor, MD
Family Medicine
Locations: Holton, St. Marys
Position: Physician
Medical Services: Birth Center, Diabetic Care, Family Medicine, Health Screenings, Men's Health, Senior Care, Youth Services, Women's Health
Collin Connor, MD
Dr. Collin Connor didn’t always dream of becoming a doctor — but a year of service through AmeriCorps changed everything. While volunteering at a free medical clinic in Providence, Rhode Island, he discovered how deeply his strengths in listening, teamwork, and problem-solving could serve others through medicine. “That experience helped me realize I could combine my love for science and learning with my desire to help people,” he said. “It truly felt like a calling from God — everything just fell into place.” A native Kansan, Dr. Connor earned his biochemistry degree from Emporia State University, then went on to study at the University of Kansas Medical Center. He completed his family medicine residency at Ascension Via Christi in Wichita. Dr. Connor enjoys caring for patients of all ages and building long-term, trusted relationships with the families he serves. Outside of work, he stays active with his wife and three sons, listens to music and podcasts, plays or watches just about any sport, and spends time in the garden. He’s also looking forward to exploring more of the great outdoors — starting with an elk hunting trip next year. Dr. Connor and his family are excited to call Onaga home and are proud to be part of the CHCS community.
Melissa Goulart, DO
Family Medicine
Location: St. Marys
Position: Physician
Medical Services: Diabetic Care, Family Medicine, Health Screenings, Men's Health, Senior Care, Youth Services, Women's Health
Melissa Goulart, DO
Dr. Melissa Goulart holds a bachelor of science degree in biology from Truman State University in Kirksville, Missouri. She attended medical school at Des Moines University in Iowa and completed her residency in Waterloo, Iowa. She is board-certified in family medicine. Dr. Goulart lives in St. Marys with her husband, five children, and a Yorkie named Jack.
Ben Harstine, MD, FMOB
Family Medicine
Locations: Centralia, Onaga
Position: Physician
Medical Services: Birth Center, Diabetic Care, Emergency Department, Family Medicine, Health Screenings, Men's Health, Senior Care, Youth Services, Women's Health
Ben Harstine, MD, FMOB
Dr. Harstine earned his bachelor of science in Public Health Nutrition from Kansas State University and attended medical school at the University of Kansas Medical Center. He completed his family medicine residency and family medicine obstetrics fellowship at Waco Family Medicine in Waco, Texas. He recently received both his family medicine and family medicine obstetrics board certifications. Dr. Harstine always knew he had a strong desire to teach. In the years after college, while working in Manhattan, he realized he also wanted “to be in the trenches with folks discussing the events and on-goings of their daily lives.” “Medicine became a place where I could use a natural interest in the sciences and human well-being to do a little bit of both. I want to be an active listener and teach my patients the benefits of daily exercise and movement to improve overall health." As a native Kansan, Dr. Harstine has always dreamed of living and serving a rural Kansas community. “I was fortunate to have the opportunity to work with CHCS as a medical student because my wife was from the area. I grew to love the hospital, staff, and community and I am glad to be joining an organization with such a long history of providing patient-centered care.” In his spare time, Dr. Harstine enjoys spending time with his wife Emily and their four children, working outside, exercising, reading and cooking. “Emily and I are excited to be back in rural Kansas, close to family, and are excited to make Onaga our home,” Dr. Harstine said.
Annie Crumbaker, PA‐C
Family Medicine
Locations: Frankfort, Marysville
Position: Advanced Practitioner
Medical Services: Diabetic Care, Family Medicine, Health Screenings, Men's Health, Senior Care, Women's Health
Annie Crumbaker, PA‐C
Annie J. Crumbaker, PA-C, grew up in the Lillis area and attended Frankfort schools. She obtained a bachelor of science in biology at Kansas State University and a master’s degree in physician assistant studies at the University of Colorado Denver. She then gained experience at the University of Kansas Hospital and Children’s Mercy Hospital before moving back to her hometown to work in family practice with CHCS. Crumbaker and her husband, Kyle, live near Lillis with daughters Peyton and Emmy and sons Evan and Connor. They enjoy raising cattle and spending time on their farm, as well as attending and participating in sporting events. They enjoy raising cattle and spending time on their farm, as well as attending and participating in sporting events.
Julia Mueting, APRN-C
Family Medicine
Locations: Marysville , Westmoreland
Position: Advanced Practitioner
Medical Services: Diabetic Care, Family Medicine, Health Screenings, Men's Health, Senior Care, Women's Health
Julia Mueting, APRN-C
Julia Mueting, APRN-C, earned her Bachelor of Science in Nursing from the University of Kansas and went on to complete her Doctor of Nursing Practice (DNP) at Washburn University. She is board certified through the American Academy of Nurse Practitioners and holds additional certifications in Advanced Cardiac Life Support (ACLS), and Basic Life Support (BLS). Julia’s clinical interests include pediatrics, long-term contraception techniques, prenatal care, and lactation support. She finds great fulfillment in the variety that each day brings and values the opportunity to build meaningful relationships with her patients and their families. “I love the reward of helping someone feel better or become more empowered in their health,” she shares. Her best advice for patients? “Always be honest with your provider and ask all your questions. It’s hard to help someone reach their goals without the full picture—we want to be sure you have what you need to succeed at home.” Julia and her husband, Craig, recently built a home in Corning, Kansas, where they are raising their three children—Lexi, Collin, and Charlee. A Topeka native and proud Kansas Jayhawk alum, Julia is also a KC Royals fan. Outside of work, she enjoys spending time with her family, keeping up with her toddlers, and settling into their newly built home—a process she loved but jokes she hopes never to repeat!
MacKenzie Forrester, APRN
Family Medicine
Locations: Holton, Onaga
Position: Advanced Practitioner
Medical Services: Family Medicine, Health Screenings

Merica Surdez, APRN‐C
Family Medicine
Medical Services: Diabetic Care, Emergency Department, Family Medicine, Health Screenings, Men's Health, Senior Care, Women's Health
Merica Surdez, APRN‐C
Merica Surdez, APRN-C, holds a bachelor of science in nursing from the University of Kansas Medical Center and a master of science in nursing-family nurse practitioner degree from Fort Hays State University. She maintains board certification with the American Academy of Nurse Practitioners and is also certified in Advanced Cardiac Life Support, Pediatric Advanced Life Support, Advanced Trauma Life Support, and Neonatal Resuscitation. Surdez’s areas of clinical interest include women’s health, including contraception counseling; reproductive health; prenatal care; lactation support; and preventive care. Surdez enjoys helping others when they need it most, creating relationships, and watching families grow. When asked for advice to share with patients, she says, “We all take our health for granted. Sometimes it takes work to better yourself. Do it! You’ll never regret investing in your health.” Surdez was born and raised in Frankfort, Kansas, and lives there with her husband, Derek, plus their two sons, Bowen and Blake, and their daughter, Wren. Surdez does not like chocolate but does enjoy spending time with family and friends, creating memories with her children, playing volleyball, and membership in the Teams of Our Lady (TOOL) church group.
Kay Cummins, APRN‐C
Family Medicine
Position: Advanced Practitioner
Medical Services: Emergency Department, Family Medicine, Health Screenings
