Cornerstone Medical Clinic
Primary Care • Sumner, WA
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.
Clinic Type
Primary Care
Address
Sumner, Washington (heart of town; serves Puyallup Valley and surrounding areas)
Phone
206.839.7944
blake@cornerstonemed.us
Opening Hours
Not published — contact the clinic to confirm hours.
Services Offered
—
Team
Insurance & Payment
—
Languages Spoken
—
Social Media
Photos
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
- 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.
Comparing your options?
See other primary care clinics in Sumner, or search the full directory by insurance, ratings, and more.