David A. Knowles, PA-C
Physician Assistant · Kamuela, HI
David A. Knowles, PA-C is a physician assistant with a practice address in Kamuela, Hawaii, and NPI 1649560517, issued on Apr 13, 2011. Check the license (Hawaii AMD-424, as entered in NPPES) with the Hawaii board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- David A. Knowles
- Credential
- PA-C
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- AMD-424 HI
Self-reported in NPPES; status is on the state search - Practice location
- 67-1185 Mamalahoa Hwy, Kamuela, HI 96743
- Phone
- (808) 881-4500
- Enumerated
- Apr 13, 2011
- Record last updated
- Jun 21, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20110919000461); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 387 in Hawaii → Look up another NPI →
Also registered at 67-1185 Mamalahoa Hwy
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Daniel Allen, PHARMDPharmacist1023600715
- Nina Baker, M.D.Family Medicine Physician1487143962
- Steven Evans, PHARMDPharmacist1437745494
- Victoria Fox-Behrle, MD, MPHInternal Medicine Physician1649431909
- Melissa Gosland, MDFamily Medicine Physician1104918002
- Lois Gregg, MDFamily Medicine Physician1184723561
Verify David A. Knowles in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Hawaii board licenses this profession
Search for license AMD-424Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
24% more Medicare Part D claims than the average physician assistant in 2024
1,026 Medicare Part D claims for 327 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. 44 claims were for opioids.
Most prescribed
- Prednisone90 claims
- Cephalexin42 claims
- Azithromycin35 claims
- Doxycycline Monohydrate35 claims
- Atorvastatin Calcium34 claims
- Baclofen33 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- Hawaii Permanente Medical Group IncHonolulu, HI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
David A. Knowles among 387 physician assistant records in Hawaii
David A. Knowles, PA-C is one of 387 physician assistant records with a practice address in Hawaii. 64% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2011, is newer than 35% of them.
- NPI issued2011 · 35% of these records are older, 62% newer
- In a Medicare fileYes · 64% of these records are
- In the CMS Doctors and Clinicians fileYes · 51% of these records are
- Graduated2010 · median 2017 among the 196 with a school on file
- Record last updated2021 · 38% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363A00000X and a Hawaii practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
4 physician assistant records list a practice address in Kamuela
They are 4 of the 319 NPPES records with a practice address in Kamuela, and 387 physician assistant records in Hawaii.
All 387 in Hawaii → Every provider in Kamuela → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Robin Char, PAKamuela, HI 967431588248637
- Daniela Laird, PA-CKamuela, HI 967431003536855
- Garrett Kaleo LeeKamuela, HI 967431306721402
- Suzanne Dunn, PA-CKaneohe, HI 967441265712152
- Kenneth Edwards, PA-CKaneohe, HI 967441780037234
- Maureen Hannan, PA-CKaneohe, HI 967441215320205
- Amy KawataniKaneohe, HI 967441639054406
- Kaipo Lindsey, PA-CKaneohe, HI 967441184174724
Common questions
What is David A. Knowles, PA-C's NPI number?
David A. Knowles, PA-C's National Provider Identifier (NPI) is 1649560517, issued on Apr 13, 2011. An NPI identifies a provider in billing; it is not a license.
Where is David A. Knowles, PA-C located?
The NPPES record lists a practice address at 67-1185 Mamalahoa Hwy, Kamuela, HI, 96743. Phone: (808) 881-4500. Providers update this record themselves, so call before visiting.
How can I verify David A. Knowles, PA-C's license?
NPPES lists Hawaii license number AMD-424, as entered by the provider. Search the Hawaii board that licenses this profession; the NPPES record confirms identity only.
How much does David A. Knowles, PA-C prescribe under Medicare Part D?
In 2024, David A. Knowles, PA-C had 1,026 Medicare Part D claims for 327 beneficiaries; the average among physician assistant prescribers was 830. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.