Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Mr. David A. Knowles, PA-C
Physician Assistant in Kamuela, HI · enumerated 2011.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1649560517
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Registry record
Entity type Individual (Type 1)
Name Mr. David A. Knowles
Credential PA-C
Sex Male
Practice address 67-1185 Mamalahoa Hwy, Kamuela, HI, 96743
Phone (808) 881-4500
Enumeration date Apr 13, 2011
Last updated in NPPES Jun 21, 2021
Taxonomy & licenses
363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License AMD-424 (HI) Primary
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.
Frequently asked questions
Is NPI 1649560517 active?
Yes, as of the latest NPPES snapshot, NPI 1649560517 is active (record last updated 2021-06-21).
How do I verify David Knowles's NPI record?
Cross-check NPI 1649560517 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Other providers at this practice address
Browse all → Lois Gregg Family Medicine Physician · Kamuela, HI NPI 1184723561 Jeffrey Tolan Family Medicine Physician · Kamuela, HI NPI 1245339639 Melissa Gosland Family Medicine Physician · Kamuela, HI NPI 1104918002 Chloe Wurr Family Medicine Physician · Kamuela, HI NPI 1598846933 Foodland Supermarket Ltd Community/Retail Pharmacy · Kamuela, HI NPI 1093860959 Jaclyn Moore Pharmacist · Kamuela, HI NPI 1073669354 Victoria Fox-Behrle Internal Medicine Physician · Kamuela, HI NPI 1649431909 Foodland Lab #38 Clinical Medical Laboratory · Kamuela, HI NPI 1760872261
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-06-21.