Diane L Armstrong, MD

Primary Care, Family Medicine

Virtual Visits Available

Meet Diane

I joined the Mercy Heath system in 2009 and have been practicing at Fairfield Internal Medicine and Rheumatology. I provide primary care services to patients of age 16+. I feel privileged to provide care to families in the Cincinnati area for over 30 years now. I live with my husband in Liberty Township and have 2 grown children and 1 grandson. In my spare time, I enjoy classical music, decorating, flowers/plants and nature.

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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
  • AmeriHealth Caritas Medicaid OH
  • Anthem Elevance Health KY & OH
  • Buckeye Health Plan OH
  • CareSource OH
  • Cigna OH
  • CIN - MHS MSSP
  • CommuniCare Medicare Advantage OH
  • Corvel KY OH VA
  • Devoted Health Medicare Advantage OH KY
  • Direct Health Connect/H2B OH
  • Essence Lumeris OH
  • Frontpath Health Coalition OH
  • HealthSmart OH
  • Healthspring Medicare Advantage OH
  • Humana Medicare Advantage ACO OH
  • Humana Military KY & OH
  • Humana OH
  • Immergrun OH
  • Medicaid OH
  • Medical Mutual of Ohio
  • Medicare OH
  • Medicare Railroad KY & OH
  • Medigold OH
  • Molina Medicare & Medicaid OH
  • Multiplan OH
  • 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
  • Sagamore OH
  • Sedgwick/Careworks KY OH SC VA
  • The Health Plan OH
  • Three Rivers Health Plan OH
  • United Healthcare OH
  • United Medicare Advantage ACO OH
  • USA MCO OH
  • Valor Health Plan OH
  • Wellcare Meridian MI

Ratings & Reviews

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Overall Score

5 out of 5 409 ratings, 79 reviews

Patient Reviews

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May 2026
Thank you for always reviewing my blood work and answering my questions and concerns. See you all in six months.
May 2026
I will highly recommend Dr. ARMSTRONG. In my opinion you can't get a better doctor.
May 2026
Dr. Armstrong is the best. She always listens to what I have to say. And always seems concerned about my problems. She the best.
May 2026
What can I say? Dr Armstrong knows her stuff and her 'bedside manner' is second to none.
May 2026
I like and respect Dr. Armstrong. I always feel comfortable talking with her and believe she listens and cares about my concerns.
May 2026
Dr. Armstrong is always looking for ways to find solutions to help me.
April 2026
6 month physical blood work review and discussion regarding other specility Doctor inter actions
April 2026
Dr Armstrong is excellent
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