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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

RICHARD DERRICK KNOWLES MD
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Family Medicine in Vancouver, WA

Active since October 26, 2006PECOS EnrolledAccepts Medicare Assignment
87.76/100
CMS Quality Rating
2101 NE 139TH ST STE 450, VANCOUVER, WA 98686(360) 487-4848 Get Directions

NPPES record last updated: August 5, 2026. Verified against the NPPES registry weekly; last sync: August 30, 2026.

Record update history: Aug 5, 2026, Nov 17, 2025, Feb 27, 2025 and 2 more (5 updates tracked since 2021).

Find Similar Family Medicine Providers by Distance


Discover healthcare providers in Vancouver, WA with a similar scope of practice to RICHARD DERRICK KNOWLES MD. These local professionals also specialize in family medicine. Our records identify 49 registered providers nearby; this includes a mix of 44 individual practitioners and 5 healthcare organizations. For your convenience, we have ranked these results by distance to help you find the closest available care. A handy interactive map is also available; select Show map to see where each nearby provider is located, or use Export CSV to download the complete list.

49 providers within 50 miles
JONATHAN ARMSTRONG
0.4 mi
14508 NE 20TH AVE
VANCOUVER, WA 98686
  • Exact Match: Family Medicine
  • Accepts Medicare
  • Both Accept: Providence Health Plan
Clark County (360) 852-9070
JEANNETTE FLAMMANG MD
10.85 mi
16811 SE MCGILLIVRAY BLVD
VANCOUVER, WA 98683
  • Exact Match: Family Medicine
  • Accepts Medicare
  • Both Accept: Providence Health Plan
Clark County (360) 735-8100
YAHN KUN CHIOU MD
11.87 mi
3101 SE 192ND AVE STE 103
VANCOUVER, WA 98683
  • Exact Match: Family Medicine
  • Accepts Medicare
  • Both Accept: Providence Health Plan
Clark County (360) 666-4480