Diana M Kellar, APRN-CNP

Primary Care, Family Medicine

Accepting New Patients

Virtual Visits Available

Meet Diana

I have been practicing medicine for 6 years, and I currently serve as the Lead Advanced Practitioner with Mercy Health Physicians. My clinical interest is in family practice with an emphasis on chronic disease management and prevention. In 2018, I received the Excellence in Medicine award. I give back to the community by volunteering in various church activities. Outside of my career, I enjoy crafts, baking and spending time with my family.

Find Locations Near You

Insurances Accepted

Information is subject to change without notice. Please contact your insurance provider for confirmation.

  • Aetna Better Health OH
  • Aetna Commercial & Aetna Medicare OH
  • Aetna Medicare Advantage ACO OH
  • Align Senior Care OH
  • AmeriHealth Caritas Medicaid OH
  • Anthem Elevance Health KY & OH
  • AultCare OH
  • Buckeye Health Plan OH
  • CareSource OH
  • Cigna OH
  • CIN - MHS MSSP
  • CIN - MHS NON-MSSP
  • CommuniCare Medicare Advantage OH
  • Devoted Health Medicare Advantage OH KY
  • HealthSmart OH
  • Healthspring Medicare Advantage OH
  • Humana Medicare Advantage ACO OH
  • Humana Military KY & OH
  • Humana OH
  • Immergrun OH
  • Martin's Point Health Care OH
  • Medicaid OH
  • Medicaid PA
  • Medical Mutual of Ohio
  • Medicare OH
  • Medicare Railroad KY & OH
  • Molina Medicare & Medicaid OH
  • Multiplan OH
  • NaphCare OH
  • Ohio BWC
  • Ohio Health Choice
  • OMC (Oscar Mgmt) OH KY SC VA
  • Paramount Elite Medicare Advantage OH
  • Payer Provider
  • Perennial Medicare Advantage OH
  • Quality Care Partners PPO OH
  • Sedgwick/Careworks KY OH SC VA
  • SummaCare OH
  • The Health Plan OH
  • United Healthcare OH
  • United Medicare Advantage ACO OH
  • Valor Health Plan OH
  • Wellcare Meridian MI

Ratings & Reviews

We believe in your choice to find the best care possible. With that in mind, it’s important to us that you have all the information you need readily available when considering making an appointment. We think it’s key that you understand how the Patient Satisfaction Rating works. Learn more about our survey process.

Overall Score

4.9 out of 5 252 ratings, 29 reviews

Patient Reviews

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February 2026
Diana is always so kind and compassionate. She always has a clear treatment plan and makes sure all questions and concerns are answered.
February 2026
Keep DNP. KELLER forever give that women a raise.
February 2026
Diana is always thorough, friendly and knowledgeable.
February 2026
GOOD
January 2026
Diana is warm, caring and loving like a big sister. I truly feel my illness, concerns, and care options actually matter.
January 2026
Everything was good!
January 2026
Diana is so kind and compassionate. She always makes sure to have a thorough treatment plan and addresses all my concerns.
January 2026
Diana listened to all the things that had been happening to me. She had a plan for me if my vertigo doesn't improve. She is a very caring person.
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