DOUGLAS R NELSON MD
NPI 1356331862
Allergy & Immunology in La Crosse, WI
About Douglas R Nelson Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DOUGLAS R NELSON MD (NPI 1356331862) is an individual allergy & immunology provider in La Crosse, Wisconsin, licensed in Wisconsin (30242) and active in the NPI registry since October 2005. He is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses 2
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)
Douglas R Nelson Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Douglas Nelson reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
La Crosse, WI 54601
- Reassigned Medicare billing, Wisconsin enrollment
- 1,003 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.
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 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
LA CROSSE, WI 54601
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 Douglas Nelson's NPI number?
The NPI number for Douglas Nelson is 1356331862. It was assigned to this individual provider in the NPPES registry on October 26, 2005.
Where is Douglas Nelson located?
Douglas Nelson practices at 800 West Ave S, La Crosse, WI 54601. The listed phone number is (608) 392-9881.
What is Douglas Nelson's specialty?
The primary specialty registered for this NPI is Allergy & Immunology with taxonomy code 207K00000X.
Is Douglas Nelson enrolled in Medicare?
Yes. Douglas Nelson is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Douglas Nelson's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Douglas Nelson reassigns Medicare benefits to Mayo Clinic Health System-Southwest Wisconsin Region, Inc. (La Crosse, WI). 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 Douglas Nelson's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Douglas Nelson accept?
Health plans from Security Health Plan list Douglas Nelson 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.
When was this NPI record last updated?
The NPPES record for Douglas Nelson was last updated on August 9, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.
# Douglas R Nelson, MD · NPI 1356331862
Allergy & Immunology physician in La Crosse, Wisconsin. Individual provider, active in the CMS NPPES registry since October 26, 2005.
## Identity
- **NPI:** 1356331862 (Entity type: Individual)
- **Enumerated:** October 26, 2005
- **Primary specialty:** Allergy & Immunology · taxonomy 207K00000X
- **State license:** 30242 (Wisconsin)
- **Sole proprietor:** No
## Practice location
- **Address:** 800 WEST AVE S, La Crosse, WI 54601-8806
- **Phone:** (608) 392-9881
## 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:** Mayo Clinic Health System-Southwest Wisconsin Region, Inc. (NPI 1629056049, La Crosse, WI), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** August 9, 2021
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Source: [NPI Profile](https://npiprofile.com/npi/1356331862) · Data from the CMS NPPES public registry.