Diane L Armstrong, MD | Primary Care | Mercy Health - Fairfield Internal Medicine
Mercy Health Provider

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
  • Aetna Whole Health ACO OH
  • AmeriHealth Caritas Medicaid OH
  • Anthem Elevance Health KY & OH
  • Buckeye Health Plan OH
  • CareSource OH
  • Cigna Healthspring Medicare Advantage OH
  • Cigna OH
  • CIN-MHS MSSP
  • CommuniCare Medicare Advantage OH
  • Devoted Health Medicare Advantage OH KY
  • Direct Health Connect/H2B OH
  • Essence Lumeris OH
  • Frontpath Health Coalition OH
  • HealthSmart 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
  • 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

4.9 out of 5 371 ratings, 62 reviews

Patient Reviews

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May 2025
Dr. Armstrong is an outstanding PCP. She is incredibly knowledgeable, efficient, and effective. She listens carefully, gets to the heart of the matter, and consistently provides high-quality care. I always leave my appointments feeling well cared for and confident in the next steps. I respect her immensely-and she's absolutely worth the two-hour round trip I make to keep seeing her. Providers like Dr. Armstrong are rare, and I'm grateful to have her as my doctor.
May 2025
Dr Armstrong is the best
May 2025
Dr. Armstrong is just the best. She listens without judgement, is easy to talk with, always has resources to provide. She remembers things I've told her before. She is the best dr I've ever been to
May 2025
Dr. Armstrong is the most wonderful physician!
May 2025
Extremely pleased with everything about this doctor - knowledge and ability to provide the best care possible. Very thankful for this doctor
May 2025
Dr. ARMSTRONG IS A GOOD LISTENER.
May 2025
Service was outstanding!
May 2025
Dr. Armstrong listens to your concerns.