EUGENE A GULLIVER MD
NPI 1366401903
Internal Medicine - Cardiovascular Disease in Janesville, WI
About Eugene A Gulliver Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
EUGENE A GULLIVER MD (NPI 1366401903) is an individual cardiovascular disease provider in Janesville, Wisconsin, licensed in Wisconsin (45190) and active in the NPI registry since March 2006. He is enrolled in Medicare PECOS, is affiliated with Javon Bea Hospital, and is a graduate of Medical College Of Wisconsin (2001).
NPPES Registry Identity
Specialties & Licenses 2
Other Identifiers 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 and accepts Medicare assignment
Eugene A Gulliver 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
2Medicare enrollment records show Eugene Gulliver reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Janesville, WI 53548
- Reassigned Medicare billing, Wisconsin enrollment
- Also billed through NPI 1699728550 (Wisconsin)
- 1,155 clinicians in this Medicare group
Rockford, IL 61114
- Reassigned Medicare billing, Illinois enrollment
- 1,375 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 8
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 3
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Javon Bea Hospital
Acute Care Hospitals · Rockford, ILMercy Health System Corp
Acute Care Hospitals · Janesville, WIMercy Walworth Hospital & Medical Center
Critical Access Hospitals · Lake Geneva, WIPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 53548 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.
JANESVILLE, WI 53548
JANESVILLE, WI 53548
JANESVILLE, WI 53548
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 Eugene Gulliver's NPI number?
The NPI number for Eugene Gulliver is 1366401903. It was assigned to this individual provider in the NPPES registry on March 22, 2006.
Where is Eugene Gulliver located?
Eugene Gulliver practices at 1000 Mineral Point Ave, Janesville, WI 53548. The listed phone number is (608) 756-6868.
What is Eugene Gulliver's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.
Is Eugene Gulliver enrolled in Medicare?
Yes. Eugene Gulliver 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 Eugene Gulliver's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Eugene Gulliver reassigns Medicare benefits to 2 organizations: Mercy Health System Corporation (Janesville, WI) and Rockford Health Physicians (Rockford, IL). 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 Eugene Gulliver's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Eugene Gulliver accept?
Health plans from Anthem Blue Cross and Blue Shield, MercyCare and MercyCare Health Plans list Eugene Gulliver 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.
Is Eugene Gulliver affiliated with any hospitals?
According to CMS data, Eugene Gulliver is affiliated with Javon Bea Hospital, Mercy Health System Corp and Mercy Walworth Hospital & Medical Center.
When was this NPI record last updated?
The NPPES record for Eugene Gulliver was last updated on October 25, 2011. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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.