PER OSKAR ILJA VON SCHEWELOV WALLEN MD
NPI 1740973114
Hospitalist in Waterloo, IA
About Per Oskar Ilja Von Schewelov Wallen Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
PER OSKAR ILJA VON SCHEWELOV WALLEN MD (NPI 1740973114) is an individual hospitalist provider in Waterloo, Iowa, licensed in Iowa (MD56168) and active in the NPI registry since May 2023. He is enrolled in Medicare PECOS, is affiliated with Allen Hospital, and is a graduate of Other (2020).
NPPES Registry Identity
Specialties & Licenses 2
Other Names 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 (PECOS)
Per Oskar Ilja Von Schewelov Wallen Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Per Oskar Ilja Von Schewelov Wallen reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Johnston, IA 50131
- Reassigned Medicare billing, Iowa enrollment
- 1,506 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.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Allen Hospital
Acute Care Hospitals · Waterloo, IAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 50703 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
WATERLOO, IA 50703
WATERLOO, IA 50703
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 Per Oskar Ilja Von Schewelov Wallen's NPI number?
The NPI number for Per Oskar Ilja Von Schewelov Wallen is 1740973114. It was assigned to this individual provider in the NPPES registry on May 31, 2023. The provider is also known as Oskar Wallen.
Where is Per Oskar Ilja Von Schewelov Wallen located?
Per Oskar Ilja Von Schewelov Wallen practices at 1825 Logan Ave, Waterloo, IA 50703. The listed phone number is (319) 235-3924.
What is Per Oskar Ilja Von Schewelov Wallen's specialty?
The primary specialty registered for this NPI is Hospitalist with taxonomy code 208M00000X.
Is Per Oskar Ilja Von Schewelov Wallen enrolled in Medicare?
Yes. Per Oskar Ilja Von Schewelov Wallen is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Per Oskar Ilja Von Schewelov Wallen's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Per Oskar Ilja Von Schewelov Wallen reassigns Medicare benefits to Iowa Physicians Clinic Medical Foundation (Johnston, IA). The 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 Per Oskar Ilja Von Schewelov Wallen's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Per Oskar Ilja Von Schewelov Wallen accept?
Health plans from Wellmark Health Plan of Iowa, Inc. list Per Oskar Ilja Von Schewelov Wallen 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 Per Oskar Ilja Von Schewelov Wallen affiliated with any hospitals?
According to CMS data, Per Oskar Ilja Von Schewelov Wallen is affiliated with Allen Hospital.
When was this NPI record last updated?
The NPPES record for Per Oskar Ilja Von Schewelov Wallen was last updated on August 24, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 months 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.
# Per Oskar Ilja Von Schewelov Wallen, MD · NPI 1740973114
Hospitalist physician in Waterloo, Iowa. Individual provider, active in the CMS NPPES registry since May 31, 2023.
## Identity
- **NPI:** 1740973114 (Entity type: Individual)
- **Enumerated:** May 31, 2023
- **Primary specialty:** Hospitalist · taxonomy 208M00000X
- **State license:** MD56168 (Iowa)
- **Sole proprietor:** No
## Practice location
- **Address:** 1825 LOGAN AVE, Waterloo, IA 50703-1916
- **Phone:** (319) 235-3924
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Iowa Physicians Clinic Medical Foundation (NPI 1891127502, Johnston, IA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2020
## Record status
- **NPPES last updated:** August 24, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1740973114) · Data from the CMS NPPES public registry.