William Jackson Knoer, ARNP
Family Nurse Practitioner · Spirit Lake, IA
William Jackson Knoer, ARNP is a family nurse practitioner with a practice address in Spirit Lake, Iowa, and NPI 1033731187, issued on May 12, 2020. Check the license (Iowa A157007, as entered in NPPES) with the Iowa board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- William Jackson Knoer
- Credential
- ARNP
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License number
- A157007 IA
Self-reported in NPPES; status is on the state search - Practice location
- 2301 Highway 71, Spirit Lake, IA 51360
- Phone
- (712) 336-1230
- Enumerated
- May 12, 2020
- Record last updated
- May 12, 2020 (not updated in 6 years: call before relying on the address or phone)
- Medicaid ID
- PENDING IA
- Medicare enrollment
- Enrolled (PECOS I20201211002278); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family nurse practitioner records → All 1,971 in Iowa → Look up another NPI →
Also registered at 2301 Highway 71
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Nina Rohling, CRNACertified Registered Nurse Anesthetist1649573247
Verify William Jackson Knoer in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Iowa board licenses this profession
Search for license A157007Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
88% fewer Medicare Part D claims than the average family nurse practitioner in 2024
163 Medicare Part D claims for 138 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D. 18 claims were for opioids.
Most prescribed
- Cephalexin15 claims
- Prednisone14 claims
- Azithromycin13 claims
- Cefdinir12 claims
- Hydrocodone-Acetaminophen12 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.
One hospital affiliation
- Lakes Regional HealthcareSpirit Lake, IA · Acute Care Hospitals2 of 5 stars
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
William Jackson Knoer among 1,971 family nurse practitioner records in Iowa
William Jackson Knoer, ARNP is one of 1,971 family nurse practitioner records with a practice address in Iowa. 84% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2020, is newer than 60% of them.
- NPI issued2020 · 60% of these records are older, 33% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileYes · 71% of these records are
- Graduated2018 · median 2018 among the 1,398 with a school on file
- Record last updated2020 · 43% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LF0000X and a Iowa practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
7 family nurse practitioner records list a practice address in Spirit Lake
They are 7 of the 144 NPPES records with a practice address in Spirit Lake, and 1,971 family nurse practitioner records in Iowa.
All 1,971 in Iowa → Every provider in Spirit Lake → Family Nurse Practitioner nationwide →
The 8 family nurse practitioner records with the nearest ZIP codes
- Marsha Haar, FNP-CSpirit Lake, IA 513601871974717
- Jessica Reinking, ARNPSpirit Lake, IA 513601346891926
- Kelsey SchmidtSpirit Lake, IA 513601366286015
- Nicole Stall, NP-CSpirit Lake, IA 513601346572518
- Ami Swanson, FNP-CSpirit Lake, IA 513601063137529
- Susan Willette, NPSpirit Lake, IA 513601841302759
- Elizabeth Stokke, FNP-CLake Park, IA 513471295459394
- Karen Pennings, CNPEstherville, IA 513341588660203
Common questions
What is William Jackson Knoer, ARNP's NPI number?
William Jackson Knoer, ARNP's National Provider Identifier (NPI) is 1033731187, issued on May 12, 2020. An NPI identifies a provider in billing; it is not a license.
Where is William Jackson Knoer, ARNP located?
The NPPES record lists a practice address at 2301 Highway 71, Spirit Lake, IA, 51360. Phone: (712) 336-1230. Providers update this record themselves, so call before visiting.
How can I verify William Jackson Knoer, ARNP's license?
NPPES lists Iowa license number A157007, as entered by the provider. Search the Iowa board that licenses this profession; the NPPES record confirms identity only.
How much does William Jackson Knoer, ARNP prescribe under Medicare Part D?
In 2024, William Jackson Knoer, ARNP had 163 Medicare Part D claims for 138 beneficiaries; the average among family nurse practitioner prescribers was 1,305. 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.