Cornerstone Medical Clinic
Primary Care • Sumner, WA
Information from public sources; not independently verified. Confirm hours, insurance and appointment availability with the clinic.
Last gathered July 11, 2026. How our information is sourced · Report incorrect information
About
Cornerstone Medical Clinic is a primary care practice in Sumner, Washington, founded in 2010 and serving the Puyallup Valley and surrounding areas. Led by Dr. Waldo Dagan and nurse practitioner Ariana McDonald, the clinic offers internal medicine, women's health, chronic disease management, annual physicals, and minor surgery. The practice emphasizes accessible, coordinated care through partnerships with major health systems and uses electronic medical records for seamless care coordination.
Services Offered
Not published.
Team
Insurance & Payment
Not published.
Languages Spoken
Not published.
Social Media
Photos
Photos published by Cornerstone Medical Clinic showing the primary care practice in Sumner, WA.
What Patients Say
Overall sentiment across review platforms: positive
- BirdEye (Local): 4.1/5 stars (47 reviews)
- BestProsInTown: Not explicitly stated but generally positive sentiment (25 reviews)
- Facebook: 90% recommendation rate (8 reviews)
Patients praise
- Physician attentiveness and willingness to listen to patients
- Competent and caring medical care provided by Dr. Dagan
- Friendly and convenient local clinic atmosphere
Common complaints
- Occasional complaints regarding front desk staff interactions
- Some reports of difficulty maintaining consistent appointments
"Cornerstone Medical Clinic in Sumner, WA comes highly recommended for those seeking a primary care physician who listens and takes their time with patients."
- Nextdoor"Patients praise Dr. Dagan and his staff for being courteous and competent."
- BestProsInTownSynthesized from public review platforms as of Jul 11, 2026 - sources: [1][2][3][4].
In the News
- [PDF] Iowa Department of Health and Human Services Vaccines for ... - Jun 30, 2026
- Harbin Clinic Sumner Family Medicine - Oct 15, 2025
- New clinic that blends primary and urgent care opens its doors in Cortez - The Durango Herald - Jan 2, 2026
- J.W. Wiseman Elementary to host walk-in clinic as part of Highpoint, Sumner partnership - Main Street Media of Tennessee - Mar 10, 2026
- Highpoint Health Breaks Ground on School-Based Clinic in Portland - Hendersonville Chamber of Commerce - Mar 11, 2026
Information sourced from the clinic's website as of July 11, 2026.
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