DR. JOHN THOMAS BRADLEY OLSEN DC
NPI 1629659677
Chiropractor in Sauk City, WI
About Dr. John Thomas Bradley Olsen Dc NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. JOHN THOMAS BRADLEY OLSEN DC (NPI 1629659677) is an individual chiropractor in Sauk City, Wisconsin, licensed in Wisconsin (5651-12) and active in the NPI registry since April 2021. He is a graduate of Palmer College Chiropractic - Davenport (2021).
NPPES Registry Identity
Specialties & Licenses
Group Practice 1
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
Dr. John Thomas Bradley Olsen Dc 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 John Olsen reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Sauk City, WI 53583
- Reassigned Medicare billing, Wisconsin enrollment
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.
Other Providers at the Same Location NPPES
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 John Olsen's NPI number?
The NPI number for John Olsen is 1629659677. It was assigned to this individual provider in the NPPES registry on April 20, 2021.
Where is John Olsen located?
John Olsen practices at 520 Water St, Sauk City, WI 53583. The listed phone number is (608) 370-6408.
What is John Olsen's specialty?
The primary specialty registered for this NPI is Chiropractor with taxonomy code 111N00000X.
Is John Olsen enrolled in Medicare?
Yes. John Olsen 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 John Olsen's services?
According to the CMS Revalidation Reassignment List (October 2026 release), John Olsen reassigns Medicare benefits to Sauk Spine Chiropractic, Inc. (Sauk City, 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 John Olsen'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 John Olsen was last updated on August 9, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.
# Dr. John Thomas Bradley Olsen, DC · NPI 1629659677
Chiropractor provider in Sauk City, Wisconsin. Individual provider, active in the CMS NPPES registry since April 20, 2021.
## Identity
- **NPI:** 1629659677 (Entity type: Individual)
- **Enumerated:** April 20, 2021
- **Primary specialty:** Chiropractor · taxonomy 111N00000X
- **State license:** 5651-12 (Wisconsin)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 520 WATER ST, Sauk City, WI 53583-1141
- **Phone:** (608) 370-6408
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Bills Medicare through:** Sauk Spine Chiropractic, Inc. (NPI 1881386878, Sauk City, WI), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Palmer College Chiropractic - Davenport, class of 2021
## Record status
- **NPPES last updated:** August 9, 2023
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Source: [NPI Profile](https://npiprofile.com/npi/1629659677) · Data from the CMS NPPES public registry.