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STEVEN J GERNDT MD
NPI 1487667549
Thoracic Surgery (Cardiothoracic Vascular Surgery) in Green Bay, WI

Active since August 13, 2006PECOS EnrolledAccepts Medicare Assignment
720 S WEBSTER AVE, SUITE 303, GREEN BAY, WI 54301(920) 433-9621(920) 445-7289 Get Directions Write a Review

NPPES record last updated: February 15, 2024. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Steven J Gerndt Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

STEVEN J GERNDT MD (NPI 1487667549) is an individual thoracic surgery (cardiothoracic vascular surgery) provider in Green Bay, Wisconsin, licensed in Wisconsin (38744) and active in the NPI registry since August 2006. He is enrolled in Medicare PECOS, is affiliated with Bellin Memorial Hospital, and maintains a secondary practice location in Marshfield.

NPPES Registry Identity

NPI1487667549
Entity TypeIndividualMale
Primary Taxonomy208G00000X
Provider Legal NameSTEVEN J GERNDTCredential: MD
Location Address720 S WEBSTER AVE, SUITE 303Green Bay, WI 54301-3538
Mailing Address720 S Webster Ave, Suite 303Green Bay, WI 54301-3538 · (920) 433-9621 · Fax (920) 445-7289
Phone(920) 433-9621
Fax(920) 445-7289
Sole ProprietorNo
Medical School CMSUniversity Of Wisconsin School Of MedicineGraduated 1989
Enumeration DateAugust 13, 2006
Last NPPES UpdateFebruary 15, 2024
NPPES CertifiedFebruary 15, 2024
✔ NPI 1487667549 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyThoracic Surgery (Cardiothoracic Vascular Surgery)Allopathic & Osteopathic Physicians
Taxonomy Code208G00000X
License✔ Licensed in WI · 38744
Definition
A thoracic surgeon provides the operative, perioperative and critical care of patients with pathologic conditions within the chest. Included is the surgical care of coronary artery disease, cancers of the lung, esophagus and chest wall, abnormalities of the trachea, abnormalities of the great vessels and heart valves, congenital anomalies, tumors of the mediastinum and diseases of the diaphragm. The management of the airway and injuries of the chest is within the scope of the specialty.
720 S WEBSTER AVE, Green Bay, WI 54301
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Secondary Practice Location 1

Location 11000 N OAK AVEMarshfield, WI 54449-5703 · Phone (715) 387-5511

Other Identifiers 2

Medicaid32314300WI
Other770002360Railroad Medicare

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield, Aspirus Health Plan, CareSource (Common Ground Healthcare) and more.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

Steven J Gerndt 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.

PECOS PAC ID840102034
PECOS Enrollment IDI20040512000994
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

7

Medicare enrollment records show Steven Gerndt reassigns Medicare billing to 7 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Bellin Memorial Hospital Inc
Same address
Infectious Disease
704 S WEBSTER AVE, SUITE 501
Green Bay, WI 54301
  • Reassigned Medicare billing, Wisconsin enrollment
  • 875 clinicians in this Medicare group
NPI 1073063681 (920) 445-7226
Beaver Dam Community Hospitals Inc
69 mi
Family Medicine
180 GATEWAY DR
Waupun, WI 53963
  • Reassigned Medicare billing, Wisconsin enrollment
  • 1,447 clinicians in this Medicare group
NPI 1629374780 (920) 345-1306
Mchs Hospitals, Inc.
76 mi
Mental Health (Including Community Mental Health Center)
2450 VINEYARD DR
Plover, WI 54467
  • Reassigned Medicare billing, Wisconsin enrollment
  • Also billed through NPI 1952890873 (Wisconsin)
  • 2,476 clinicians in this Medicare group
NPI 1386249894 (715) 342-0290
Marshfield Clinic Inc
108 mi
Clinic/Center
1000 N OAK AVE
Marshfield, WI 54449
  • Reassigned Medicare billing, Wisconsin enrollment
  • 2,540 clinicians in this Medicare group
NPI 1952347981 (715) 387-5511
Memorial Hospital, Inc
128 mi
Clinical Medical Laboratory
216 SUNSET PL, MEMORIAL HOSPITAL, INC
Neillsville, WI 54456
  • Reassigned Medicare billing, Wisconsin enrollment
  • Also billed through NPI 1346239373 (Wisconsin)
  • 1,283 clinicians in this Medicare group
NPI 1679746747 (715) 743-3101
Flambeau Hospital Inc
154 mi
Clinic/Center
98 SHERRY AVE
Park Falls, WI 54552
  • Reassigned Medicare billing, Wisconsin enrollment
  • Also billed through NPI 1700963048 (Wisconsin)
  • 1,351 clinicians in this Medicare group
NPI 1194317966 (715) 762-2484
Lakeview Medical Center Inc Of Rice Lake
187 mi
Clinic/Center
806 2ND ST
Chetek, WI 54728
  • Reassigned Medicare billing, Wisconsin enrollment
  • 1,616 clinicians in this Medicare group
NPI 1659008605 (715) 924-2000

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Bellin Memorial Hospital

Acute Care Hospitals · Green Bay, WI
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number520049
Location744 S Webster AveGreen Bay, WI 54305 · Brown County
Emergency services Birthing friendly

Physician 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.

New Patient
$163.24 typical visit price
range $53.90 – $163.24
Typical copayment $40.81 (range $13.47 – $40.81)
Most-billed visit code 99205
Established Patient
$67.37 typical visit price
range $17.40 – $133.76
Typical copayment $16.84 (range $4.35 – $33.44)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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 Steven Gerndt's NPI number?

The NPI number for Steven Gerndt is 1487667549. It was assigned to this individual provider in the NPPES registry on August 13, 2006.

Where is Steven Gerndt located?

Steven Gerndt practices at 720 S Webster Ave Suite 303, Green Bay, WI 54301. The listed phone number is (920) 433-9621.

What is Steven Gerndt's specialty?

The primary specialty registered for this NPI is Thoracic Surgery (Cardiothoracic Vascular Surgery) with taxonomy code 208G00000X.

Is Steven Gerndt enrolled in Medicare?

Yes. Steven Gerndt 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 Steven Gerndt's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Steven Gerndt reassigns Medicare benefits to 7 organizations: Bellin Memorial Hospital Inc (Green Bay, WI), Beaver Dam Community Hospitals Inc (Waupun, WI), Mchs Hospitals, Inc. (Plover, WI), Marshfield Clinic Inc (Marshfield, WI), Memorial Hospital, Inc (Neillsville, WI) and 2 more organizations, listed in the Medicare section above. 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 Steven Gerndt's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Steven Gerndt accept?

Health plans from Anthem Blue Cross and Blue Shield, Aspirus Health Plan, CareSource (Common Ground Healthcare) and HealthPartners list Steven Gerndt 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 Steven Gerndt affiliated with any hospitals?

According to CMS data, Steven Gerndt is affiliated with Bellin Memorial Hospital.

When was this NPI record last updated?

The NPPES record for Steven Gerndt was last updated on February 15, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.