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DR. PETER H. MARKS M.D.
NPI 1558327320
Thoracic Surgery (Cardiothoracic Vascular Surgery) in Beloit, WI

Active since April 21, 2006PECOS Enrolled
1969 W. HART ROAD, BELOIT HEALTH SYSTEM INC, BELOIT, WI 53511(608) 364-5011(608) 364-5593 Get Directions Write a Review

NPPES record last updated: February 27, 2013. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Dr. Peter H. Marks M.d. NPPES

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

DR. PETER H. MARKS M.D. (NPI 1558327320) is an individual thoracic surgery (cardiothoracic vascular surgery) provider in Beloit, Wisconsin, licensed in Wisconsin (45518-20) and active in the NPI registry since April 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1558327320
Entity TypeIndividualMale
Primary Taxonomy208G00000X
Provider Legal NameDR. PETER H. MARKSCredential: M.D.
Location Address1969 W. HART ROAD, BELOIT HEALTH SYSTEM INCBeloit, WI 53511-2298
Mailing Address1969 W. Hart Road, Beloit Health System IncBeloit, WI 53511-2298 · (608) 364-5011 · Fax (608) 364-5593
Phone(608) 364-5011
Fax(608) 364-5593
Sole ProprietorNo
Enumeration DateApril 21, 2006
Last NPPES UpdateFebruary 27, 2013
✔ NPI 1558327320 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
Licenses✔ Licensed in WI · 45518-20✔ Licensed in IL · 036-060891
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.
1969 W. HART ROAD, Beloit, WI 53511
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Other Identifiers 3

Medicaid1558327320WI
Medicare UPIND15218
Medicaid036060891IL

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Peter H. Marks M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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 Reassignment

Medicare enrollment records show Peter Marks reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Beloit Health System Inc
6.3 mi
General Practice
5605 E ROCKTON RD
Roscoe, IL 61073
  • Reassigned Medicare billing, Illinois enrollment
  • 66 clinicians in this Medicare group
NPI 1841485984 (608) 364-5011

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 53511 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.

Other Providers at the Same Location NPPES 5

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

ROBERT G. TEEHAN M.D.
Hospitalist
1969 W. HART ROAD, BELOIT MEMORIAL HOSPITAL
BELOIT, WI 53511
Rock County (608) 363-5971
JENNY ANN MANAGBANAG NP
Nurse Practitioner
1969 W. HART ROAD, BELOIT MEMORIAL HOSPITAL
BELOIT, WI 53511
Rock County (608) 364-5011
RACHEL N TRACY P.T..
Occupational Therapist
1969 W. HART ROAD, BELOIT MEMORIAL HOSPITAL
BELOIT, WI 53511
Rock County (608) 364-5011
ALLISON G. PETSKA SLP
Speech-Language Pathologist
1969 W. HART ROAD, BELOIT HEALTH SYSTEM INC
BELOIT, WI 53511
Rock County (608) 364-5173
DEBRA J KOCH PT
Physical Therapist
1969 W. HART ROAD, BELOIT MEMORIAL HOSPITAL
BELOIT, WI 53511
Rock County (608) 364-5173

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 Peter Marks's NPI number?

The NPI number for Peter Marks is 1558327320. It was assigned to this individual provider in the NPPES registry on April 21, 2006.

Where is Peter Marks located?

Peter Marks practices at 1969 W. Hart Road Beloit Health System Inc, Beloit, WI 53511. The listed phone number is (608) 364-5011.

What is Peter Marks's specialty?

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

Is Peter Marks enrolled in Medicare?

Yes. Peter Marks is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Peter Marks's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Peter Marks reassigns Medicare benefits to Beloit Health System Inc (Roscoe, IL). 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 Peter Marks'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 Peter Marks was last updated on February 27, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.