MR. WILLIAM JACKSON KNOER ARNP
NPI 1033731187
Nurse Practitioner - Family in Spirit Lake, IA
About Mr. William Jackson Knoer Arnp NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MR. WILLIAM JACKSON KNOER ARNP (NPI 1033731187) is an individual family provider in Spirit Lake, Iowa, licensed in Iowa (A157007) and active in the NPI registry since May 2020. He is enrolled in Medicare PECOS, is affiliated with Lakes Regional Healthcare, and is a graduate of Other (2018).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Mr. William Jackson Knoer Arnp is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
2Medicare enrollment records show William Knoer reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Spirit Lake, IA 51360
- Reassigned Medicare billing, Iowa enrollment
- 65 clinicians in this Medicare group
Rock Valley, IA 51247
- Reassigned Medicare billing, Iowa enrollment
- 91 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Lakes Regional Healthcare
Acute Care Hospitals · Spirit Lake, IAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 51360 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Referred Medical Equipment & Supplies CMS DME claims
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
Other Providers at the Same Location NPPES 7
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
SPIRIT LAKE, IA 51360
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is William Knoer's NPI number?
The NPI number for William Knoer is 1033731187. It was assigned to this individual provider in the NPPES registry on May 12, 2020.
Where is William Knoer located?
William Knoer practices at 2301 Highway 71, Spirit Lake, IA 51360. The listed phone number is (712) 336-1230.
What is William Knoer's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.
Is William Knoer enrolled in Medicare?
Yes. William Knoer is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for William Knoer's services?
According to the CMS Revalidation Reassignment List (October 2026 release), William Knoer reassigns Medicare benefits to 2 organizations: Lakes Regional Healthcare (Spirit Lake, IA) and Hegg Memorial Hospital (Rock Valley, IA). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for William Knoer's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does William Knoer accept?
Health plans from Avera Health Plans, Oscar Insurance Company, Sanford Health Plan and Wellmark Health Plan of Iowa, Inc. list William Knoer as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is William Knoer affiliated with any hospitals?
According to CMS data, William Knoer is affiliated with Lakes Regional Healthcare.
When was this NPI record last updated?
The NPPES record for William Knoer was last updated on May 12, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Mr. William Jackson Knoer, ARNP · NPI 1033731187
Family physician in Spirit Lake, Iowa. Individual provider, active in the CMS NPPES registry since May 12, 2020.
## Identity
- **NPI:** 1033731187 (Entity type: Individual)
- **Enumerated:** May 12, 2020
- **Primary specialty:** Nurse Practitioner - Family · taxonomy 363LF0000X
- **State license:** A157007 (Iowa)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 2301 HIGHWAY 71, Spirit Lake, IA 51360-1185
- **Phone:** (712) 336-1230
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Lakes Regional Healthcare (NPI 1336291160, Spirit Lake, IA); Hegg Memorial Hospital (NPI 1629023429, Rock Valley, IA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2018
## Record status
- **NPPES last updated:** May 12, 2020
- **Other identifiers:** Medicaid PENDING (IA)
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Source: [NPI Profile](https://npiprofile.com/npi/1033731187) · Data from the CMS NPPES public registry.