JOSEPH LARSON
NPI 1477968303
Family Medicine in Des Moines, IA
About Joseph Larson NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JOSEPH LARSON (NPI 1477968303) is an individual family medicine provider in Des Moines, Iowa, licensed in Iowa (R-10105) and active in the NPI registry since June 2014. He is enrolled in Medicare PECOS, is affiliated with Trinity Regional Medical Center, and is a graduate of Other (2014).
NPPES Registry Identity
Specialties & Licenses
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
Joseph Larson 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 Reassignment
Medicare enrollment records show Joseph Larson reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Webster City, IA 50595
- Reassigned Medicare billing, Iowa enrollment
- 387 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 3
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Trinity Regional Medical Center
Acute Care Hospitals · Fort Dodge, IAAllen Hospital
Acute Care Hospitals · Waterloo, IAHumboldt County Memorial Hospital
Critical Access Hospitals · Humboldt, IAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 50316 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 8
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 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
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 Joseph Larson's NPI number?
The NPI number for Joseph Larson is 1477968303. It was assigned to this individual provider in the NPPES registry on June 30, 2014.
Where is Joseph Larson located?
Joseph Larson practices at 840 E University Ave, Des Moines, IA 50316. The listed phone number is (515) 265-4211.
What is Joseph Larson's specialty?
The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.
Is Joseph Larson enrolled in Medicare?
Yes. Joseph Larson 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 organization bills Medicare for Joseph Larson's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Joseph Larson reassigns Medicare benefits to Trinity Regional Medical Center (Webster City, 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 Joseph Larson's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Joseph Larson accept?
Health plans from Oscar Insurance Company and Wellmark Health Plan of Iowa, Inc. list Joseph Larson 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 Joseph Larson affiliated with any hospitals?
According to CMS data, Joseph Larson is affiliated with Trinity Regional Medical Center, Allen Hospital and Humboldt County Memorial Hospital.
When was this NPI record last updated?
The NPPES record for Joseph Larson was last updated on June 30, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.
# Joseph Larson · NPI 1477968303
Family Medicine physician in Des Moines, Iowa. Individual provider, active in the CMS NPPES registry since June 30, 2014.
## Identity
- **NPI:** 1477968303 (Entity type: Individual)
- **Enumerated:** June 30, 2014
- **Primary specialty:** Family Medicine · taxonomy 207Q00000X
- **State license:** R-10105 (Iowa)
- **Sole proprietor:** No
## Practice location
- **Address:** 840 E UNIVERSITY AVE, Des Moines, IA 50316-2304
- **Phone:** (515) 265-4211 · **Fax:** (515) 309-5993
## 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:** Trinity Regional Medical Center (NPI 1568650174, Webster City, IA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2014
## Record status
- **NPPES last updated:** June 30, 2014
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Source: [NPI Profile](https://npiprofile.com/npi/1477968303) · Data from the CMS NPPES public registry.