Peggy A. Knowles, ARNP
Primary Care Nurse Practitioner · Vancouver, WA
Peggy A. Knowles, ARNP is a primary care nurse practitioner with a practice address in Vancouver, Washington, and NPI 1821468448, issued on Sep 25, 2015. Check the license (Washington AP60605303, as entered in NPPES) with the Washington board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Peggy A. Knowles
- Credential
- ARNP
- Primary taxonomy
- Primary Care Nurse Practitioner 363LP2300X
- License numbers
- AP60605303 WA
RN60511802 WA
Self-reported in NPPES; status is on the state search - Practice location
- 415 SE 177TH Ave, Vancouver, WA 98683
- Phone
- (360) 980-2441
- Enumerated
- Sep 25, 2015
- Record last updated
- Oct 8, 2024
- Fax
- (877) 491-4990
- Entity
- Type 1 · individual
8 nearest primary care nurse practitioner records → All 196 in Washington → Look up another NPI →
Also registered at 415 SE 177TH Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Peggy A. Knowles in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Washington board licenses this profession
Search for license AP60605303Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
79% fewer Medicare Part D claims than the average primary care nurse practitioner in 2024
309 Medicare Part D claims for 61 beneficiaries, against an average of 1,492 among the 5,992 providers of this specialty who prescribed in Part D. 19 claims were for opioids.
Most prescribed
- Sertraline Hcl34 claims
- Trazodone Hcl22 claims
- Metoprolol Tartrate21 claims
- Quetiapine Fumarate20 claims
- Furosemide19 claims
- Omeprazole19 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.
Peggy A. Knowles among 196 primary care nurse practitioner records in Washington
Peggy A. Knowles, ARNP is one of 196 primary care nurse practitioner records with a practice address in Washington. 69% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2015, is newer than 31% of them.
- NPI issued2015 · 31% of these records are older, 65% newer
- In a Medicare fileYes · 69% of these records are
- In the CMS Doctors and Clinicians fileNo · 48% of these records are
- Record last updated2024 · 37% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LP2300X and a Washington practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Primary Care Nurse Practitioner providers in Washington
There are 196 primary care nurse practitioner records in Washington.
All 196 in Washington → Every provider in Vancouver → Primary Care Nurse Practitioner nationwide →
The 8 primary care nurse practitioner records with the nearest ZIP codes
- Joanne Wallis, PNPVancouver, WA 986831932370756
- Carrie Myers-Cleary, ARNPVancouver, WA 986841760416325
- Leayn Vandeven, NP-CVancouver, WA 986841285273086
- Trevor Staten, FNP-CVancouver, WA 986861285383323
- Shelby Bowerly, DNP, APRN, FNP-CWhite Salmon, WA 986721396343992
- Melissa Cosgrove, NPVancouver, WA 986621295191310
- Nicole Lara, AGPCNPVancouver, WA 986611740674530
- Kelli Hanks, ARNPLongview, WA 986321962041996
Common questions
What is Peggy A. Knowles, ARNP's NPI number?
Peggy A. Knowles, ARNP's National Provider Identifier (NPI) is 1821468448, issued on Sep 25, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Peggy A. Knowles, ARNP located?
The NPPES record lists a practice address at 415 SE 177TH Ave, Vancouver, WA, 98683. Phone: (360) 980-2441. Providers update this record themselves, so call before visiting.
How can I verify Peggy A. Knowles, ARNP's license?
NPPES lists Washington license number AP60605303, as entered by the provider. Search the Washington board that licenses this profession; the NPPES record confirms identity only.
How much does Peggy A. Knowles, ARNP prescribe under Medicare Part D?
In 2024, Peggy A. Knowles, ARNP had 309 Medicare Part D claims for 61 beneficiaries; the average among primary care nurse practitioner prescribers was 1,492. 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.