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Marysville Primary Care



8:00 am - 5:00 pm
8:00 am - 5:00 pm
8:00 am - 5:00 pm
8:00 am - 5:00 pm
8:00 am - 5:00 pm

TeleVisits With Your Provider

Discover how to have a TeleVisit appointment with your COPC provider.

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Car Seat Guidelines

At Marysville Primary Care, we deeply care about children’s safety while they ride in the car. We stress the importance for children to have proper car seats and for parents to be educated on this issue, in order to protect children from fatal injuries caused by car accidents. In our efforts to improve the safety of children, we have written an article of guidelines for parents.

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Our Kids and Media Use

We know that the hours kids spend in front of screens – phones, TVs, video games, computers – can contribute to pediatric obesity, poor sleep, and mental health issues. However, screens can also provide education, social interaction, and entertainment and can be beneficial in appropriate settings and dosing.

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About Marysville Primary Care

Important Coronavirus Update

Please read our statement on the coronavirus pandemic by clicking here.

Welcome to Marysville Primary Care

Our strength lies in our culture of quality care and community pride that we have maintained for over 20 years. Our multi-specialty group aims to address health care on personal and family levels, in order to best take care of the varying needs of our patients. From Family Medicine and Internal Medicine to Pediatrics and Allergies, our medical professionals will be able to provide quality care for you and your family.

Appointments & Referrals

You can speak with a nurse Monday through Friday, 8:00 am to 5:00 pm regarding prescription refills, scheduling appointments, requesting a referral, or discuss any medical concerns. If all of the nurses are on the phone with other patients, you will have the opportunity to leave a message with their voice mail. The nurses check their voicemail routinely and try to return your calls promptly. A 24 hours notice when canceling an appointment is appreciated.

When leaving a message, please clearly state:  Your full name (please spell your first and last name) and the patient's full name, if different, date of birth, home telephone number or a telephone number where we can return your call and appropriate time to call if needed, medication allergies, pharmacy name and phone number.

You Don't Have to Suffer from Your Allergies

Allergies are different for everyone. They can range in severity from a minor seasonal inconvenience to a life-threatening emergency. No matter how your allergies affect you, when you call our office, we know you are serious about feeling better and will offer compassionate and cost-effective care.

Dr. Peter Mustillo is board certified in Allergy and Immunology, Internal Medicine and Pediatrics. As an Allergist, he is trained to determine the cause of your allergies, which may be related to foods, environmental factors (such as pollen), drugs, or topical substances. Allergy testing might be ordered to help make this assessment. 

Once the cause of your allergic reactions is clear, Dr. Mustillo will be able to create a treatment plan that’s right for you or your child. Often, avoidance of the environment causing the reaction will be suggested. Other times, a readily available, over-the-counter medication may be all that you need. Occasionally, patients require a combination of prescriptions and allergy shots for severe allergy symptoms. Whatever your treatment plan looks like, rest assured that your allergist will create it with your comfort and lifestyle in mind.

Enter Our Allergy Health Resource Center

Prescription Policies and Information

If you are calling in for a prescription refill, please instruct us if the prescription is to be called to a pharmacy or if must be written for mail-in services. We kindly ask that you give us 48-72 hours notice for prescription refills. Please check with your pharmacy the following business day after 5pm. We will not fill prescriptions for narcotics, many pain medications or controlled substances outside of regular office hours.

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Flu Season Is Here

It's important to stay ahead of the game and be aware of ways you and your family can stay healthy, especially during flu season. You can learn more about its causes, symptoms, and prevention by reading our article.

Discovering Healthy Habits

Are you looking to achieve better health and wellness? If so, we can help you get started by showing you the three key components of a healthy lifestyle. To learn more about how you can integrate healthy eating, exercise, and preventative care in your everyday life, we encourage you to read our article.

Learn Healthy Tips!

SameDay Care Centers

Our SameDay Centers deliver excellent care that’s a cut above the typical Emergency Room and Urgent Care experience, at a significantly lower cost. By choosing one of our SameDay Centers, you can be seen after traditional hours or when your regular physician is unable to see you that same day.

See How We Can Help

After-Hours Support Center - (614) 865-3125

If you are a COPC patient, the After-Hours Support Center is available to help you find the care you need. When you call our After-Hours Support Center, a Nurse Practitioner on staff will address your concerns and guide you in the right direction. Mondays - Fridays from 4:00 pm to 11:00 pm and weekends from 8:00 am to 5:00 pm, our nurses can help you schedule appointments with your COPC physician, refer you to a SameDay Center, and help you with prescription refills until you can reach your COPC physician’s office directly (limited to small quantities of your current medications only.)

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Breast Cancer Facts

Did you know that one in eight women in the United States will develop breast cancer? Because breast cancer is one of the most common forms that impact women, we highly encourage all adult women to learn more about this disease and take preventative measures.

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Marysville Primary Care

140 Colemans Crossing Blvd., Suite 210, Marysville, OH


(937) 644-1441


(937) 642-7760

Monday 8:00 am - 5:00 pm

Tuesday 8:00 am - 5:00 pm

Wednesday 8:00 am - 5:00 pm

Thursday 8:00 am - 5:00 pm

Friday 8:00 am - 5:00 pm


Elizabeth C. Billington, D.O.

Nathan E. Billington, M.D.

Marissa P. Forrest, CNP

Kathryn Gathof, M.D.

Emily S. Herman MSN, CNP

Justin K. Krueger, M.D.

Peter J. Mustillo, M.D.

Julie A. Sabo, CNP

Tarang Sharma, M.D.

Laura L. Sorg, M.D.