GEFFREY E CAVALLIN MD
NPI 1225061625
Hospitalist in Green Bay, WI
About Geffrey E Cavallin Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
GEFFREY E CAVALLIN MD (NPI 1225061625) is an individual hospitalist provider in Green Bay, Wisconsin, licensed in Wisconsin (42743) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS, is affiliated with St Vincent Hospital, and is a graduate of University Of Iowa, Rj & L Carver College Of Medicine (1992).
NPPES Registry Identity
Specialties & Licenses
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 and accepts Medicare assignment
Geffrey E Cavallin Md 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 Reassignments
3Medicare enrollment records show Geffrey Cavallin reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Green Bay, WI 54301
- Reassigned Medicare billing, Wisconsin enrollment
- Also billed through NPI 1285613638 (Wisconsin)
- 79 clinicians in this Medicare group
Green Bay, WI 54301
- Reassigned Medicare billing, Wisconsin enrollment
- 216 clinicians in this Medicare group
Green Bay, WI 54303
- Reassigned Medicare billing, Wisconsin enrollment
- 57 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.
Areas of Expertise CMS Part B claims 3
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.
Hospital Affiliations CMS Care Compare 4
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
St Vincent Hospital
Acute Care Hospitals · Green Bay, WISt Mary's Hospital Medical Center
Acute Care Hospitals · Green Bay, WIHshs St Clare Memorial Hospital
Critical Access Hospitals · Oconto Falls, WIDoor County Medical Center
Critical Access Hospitals · Sturgeon Bay, WIPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 54301 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
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.
GREEN BAY, WI 54301
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 Geffrey Cavallin's NPI number?
The NPI number for Geffrey Cavallin is 1225061625. It was assigned to this individual provider in the NPPES registry on July 8, 2006.
Where is Geffrey Cavallin located?
Geffrey Cavallin practices at 835 S Van Buren St, Green Bay, WI 54301. The listed phone number is (920) 496-4700.
What is Geffrey Cavallin's specialty?
The primary specialty registered for this NPI is Hospitalist with taxonomy code 208M00000X.
Is Geffrey Cavallin enrolled in Medicare?
Yes. Geffrey Cavallin 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 organizations bill Medicare for Geffrey Cavallin's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Geffrey Cavallin reassigns Medicare benefits to 3 organizations: St Vincent Hospital-Hospital Sisters-Third Order Of St Francis (Green Bay, WI), St. Clare Memorial Hospital, Inc. (Green Bay, WI) and St. Mary's Hospital Medical Center Of Green Bay Inc.-Hospital Sisters (Green Bay, WI). Each 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 Geffrey Cavallin's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Geffrey Cavallin affiliated with any hospitals?
According to CMS data, Geffrey Cavallin is affiliated with St Vincent Hospital, St Mary's Hospital Medical Center, Hshs St Clare Memorial Hospital and Door County Medical Center.
When was this NPI record last updated?
The NPPES record for Geffrey Cavallin was last updated on March 8, 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.
# Geffrey E Cavallin, MD · NPI 1225061625
Hospitalist physician in Green Bay, Wisconsin. Individual provider, active in the CMS NPPES registry since July 8, 2006.
## Identity
- **NPI:** 1225061625 (Entity type: Individual)
- **Enumerated:** July 8, 2006
- **Primary specialty:** Hospitalist · taxonomy 208M00000X
- **State license:** 42743 (Wisconsin)
- **Sole proprietor:** No
## Practice location
- **Address:** 835 S VAN BUREN ST, Green Bay, WI 54301-3526
- **Phone:** (920) 496-4700 · **Fax:** (920) 431-3267
## 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:** 3 organizations under Medicare reassignment (form CMS-855R): St Vincent Hospital-Hospital Sisters-Third Order Of St Francis (NPI 1689694911, Green Bay, WI); St. Clare Memorial Hospital, Inc. (NPI 1093173791, Green Bay, WI); St. Mary's Hospital Medical Center Of Green Bay Inc.-Hospital Sisters (NPI 1598150864, Green Bay, WI) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Iowa, Rj & L Carver College Of Medicine, class of 1992
## Record status
- **NPPES last updated:** March 8, 2019
- **Other identifiers:** Medicaid 34031700 (WI)
---
Source: [NPI Profile](https://npiprofile.com/npi/1225061625) · Data from the CMS NPPES public registry.