ALEXANDER L SOMMERS MD
NPI 1659432581
Emergency Medicine in New London, WI
About Alexander L Sommers Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ALEXANDER L SOMMERS MD (NPI 1659432581) is an individual emergency medicine provider in New London, Wisconsin, licensed in Wisconsin (42405) and active in the NPI registry since December 2006. He is enrolled in Medicare PECOS and maintains 4 additional practice locations.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Locations 4
Other Identifiers 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Alexander L Sommers Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Alexander Sommers reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Waupaca, WI 54981
- Reassigned Medicare billing, Wisconsin enrollment
- 85 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 54961 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.
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 Alexander Sommers's NPI number?
The NPI number for Alexander Sommers is 1659432581. It was assigned to this individual provider in the NPPES registry on December 13, 2006.
Where is Alexander Sommers located?
Alexander Sommers practices at 1405 Mill St, New London, WI 54961. The listed phone number is (920) 531-2000.
What is Alexander Sommers's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Alexander Sommers enrolled in Medicare?
Yes. Alexander Sommers is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Alexander Sommers's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Alexander Sommers reassigns Medicare benefits to Thedacare Medical Center - Waupaca, Inc. (Waupaca, 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 Alexander Sommers's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Alexander Sommers was last updated on June 5, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.
# Alexander L Sommers, MD · NPI 1659432581
Emergency Medicine physician in New London, Wisconsin. Individual provider, active in the CMS NPPES registry since December 13, 2006.
## Identity
- **NPI:** 1659432581 (Entity type: Individual)
- **Enumerated:** December 13, 2006
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** 42405 (Wisconsin)
- **Sole proprietor:** No
## Practice location
- **Address:** 1405 MILL ST, New London, WI 54961-2155
- **Phone:** (920) 531-2000 · **Fax:** (920) 531-2098
## 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:** Thedacare Medical Center - Waupaca, Inc. (NPI 1013995521, Waupaca, WI), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** June 5, 2019
- **Other identifiers:** Medicaid 34262700 (WI)
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Source: [NPI Profile](https://npiprofile.com/npi/1659432581) · Data from the CMS NPPES public registry.