RYAN T ZANTOW MD
NPI 1821044892
Preventive Medicine - Occupational Medicine in Oshkosh, WI
About Ryan T Zantow Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
RYAN T ZANTOW MD (NPI 1821044892) is an individual occupational medicine provider in Oshkosh, Wisconsin, licensed in Wisconsin (44776) and active in the NPI registry since May 2006. He is enrolled in Medicare PECOS and maintains 2 additional practice locations.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Locations 2
Other Identifiers 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)
Ryan T Zantow Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Ryan Zantow reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Sheboygan, WI 53081
- Reassigned Medicare billing, Wisconsin enrollment
- 4,609 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 54904 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.
OSHKOSH, WI 54904
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 Ryan Zantow's NPI number?
The NPI number for Ryan Zantow is 1821044892. It was assigned to this individual provider in the NPPES registry on May 25, 2006.
Where is Ryan Zantow located?
Ryan Zantow practices at 855 N Westhaven Dr, Oshkosh, WI 54904. The listed phone number is (833) 986-2170.
What is Ryan Zantow's specialty?
The primary specialty registered for this NPI is Preventive Medicine, specializing in Occupational Medicine, with taxonomy code 2083X0100X.
Is Ryan Zantow enrolled in Medicare?
Yes. Ryan Zantow is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Ryan Zantow's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Ryan Zantow reassigns Medicare benefits to Aurora Medical Group, Inc. (Sheboygan, 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 Ryan Zantow's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Ryan Zantow accept?
Health plans from Anthem Blue Cross and Blue Shield, Aspirus Health Plan, CareSource (Common Ground Healthcare), HealthPartners and Quartz and 1 other insurer list Ryan Zantow 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 Ryan Zantow was last updated on March 3, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.
# Ryan T Zantow, MD · NPI 1821044892
Occupational Medicine physician in Oshkosh, Wisconsin. Individual provider, active in the CMS NPPES registry since May 25, 2006.
## Identity
- **NPI:** 1821044892 (Entity type: Individual)
- **Enumerated:** May 25, 2006
- **Primary specialty:** Preventive Medicine - Occupational Medicine · taxonomy 2083X0100X
- **State license:** 44776 (Wisconsin)
- **Sole proprietor:** No
## Practice location
- **Address:** 855 N WESTHAVEN DR, Oshkosh, WI 54904-7668
- **Phone:** (833) 986-2170
## 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:** Aurora Medical Group, Inc. (NPI 1174670244, Sheboygan, WI), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** March 3, 2026
- **Other identifiers:** Medicaid 34827700 (WI)
---
Source: [NPI Profile](https://npiprofile.com/npi/1821044892) · Data from the CMS NPPES public registry.