Seneca Healthcare Center

COVID-19 RESPONSE: For your safety and the safety of others, we are proactively screening everyone who enters our clinics for symptoms of COVID-19 through temperature checks and screening questions. Masks/face coverings are required for the safety of others. A support person is only permitted for patients who are 17 and younger, as well as patients who are incapacitated or in need of continual assistance. Anyone experiencing fever, sore throat, shortness of breath, cough or flu-like symptoms should call for instructions.

Family Medicine Physician Dr. Colin Kao and Family Nurse Practitioner Nina Seplak practice at Seneca Healthcare Center of Morris Hospital at 271 N. Main Street. Services include care for the entire family, same-day appointments, on-site blood draws, blood pressure screenings, immunizations, physicals, ePrescribing, and more. For an appointment with Dr. Kao or Nina, call 815.357.8511.


271 N. Main St.
Seneca, IL 61360


To schedule an appointment, call 815.357.8511


Mondays: 7:30 a.m. – 5 p.m.
Tuesdays: 7:30 a.m. – 5 p.m.
Wednesdays: 7:30 a.m. – 6:30 p.m.
Thursdays: 9 a.m. – 6:30 p.m.
Fridays: 7:30 a.m. – 4 p.m.
Weekends: Visit our Walk-In Care Centers


Colin Kao, D.O., Family Medicine

As a board-certified family medicine physician, Dr. Colin Kao provides primary care for patients of all ages. In addition to diagnosing and treating illness, Dr. Kao provides a wide range of care, including preventive care, routine check-ups, health risk assessments, immunizations, screening tests, and personalized counseling on maintaining a healthy lifestyle. He has specific interest in sports medicine, preventive medicine and immunizations.

Dr. Kao received his medical degree from the University of Osteopathic Medicine and Health Sciences in Des Moines, Iowa, and completed a residency in family medicine at the University of Wyoming Family Practice Program in Cheyenne, Wy. He also completed a fellowship in sports medicine at Kansas City University of Medicine and Biosciences and an internship at Des Moines General Hospital.

He is board certified in Family Medicine and Sports Medicine. When he’s not taking care of patients, he enjoys hiking and biking with his family.

To schedule an appointment with Dr. Kao, call 815.357-8511.


Monday: 7:30 a.m. – 4 p.m.; Tuesday: 7:30 a.m. – 4 p.m.; Wednesday: 10 a.m. – 6:30 p.m.; Friday: 7:30 a.m. – 4 p.m.

Nina Seplak, F.N.P.-B.C., Family Medicine

As a family nurse practitioner, Nina Seplak is qualified to serve as the primary care health care provider for patients of all ages. She holds a Family Nurse Practitioner certificate, allowing her to order and interpret diagnostic tests, diagnose disease, provide appropriate treatments and prescribe medications.

Nina has worked for more than 14 years as a nurse and has worked as a nurse practitioner since 2017. She completed her master’s degree in nursing at Frontier Nursing University in Hyden, Ky. and had previously acquired her associate’s degree in nursing at Caldwell Community College and Technical Institute in Hudson, N.C.

Nina is board certified by the American Nurses Credentialing Center and is a member of the American Academy of Nurse Practitioners.

To schedule an appointment with Nina, call 815-357-8511.


Monday: 7:30 a.m. – 5 p.m.; Tuesday: 7:30 a.m. – 5 p.m.; Wednesday: 7:30 a.m. – 5 p.m.; Thursday: 9 a.m. – 6:30 p.m.; Friday: 7:30 a.m. – 11:30 p.m.


For your convenience, we suggest that you download and complete our Healthcare Centers – General Patient Registration Form before coming in for your office visit.


Your provider is committed to delivering the best possible coordination of your care by participating in an Accountable Care Organization (ACO).  A care coordinator may get involved in your care to help improve communication between your healthcare providers. Please visit our Accountable Care Organization (ACO) webpage to learn more.

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