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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. MARK L GOELZER MD
NPI 1619902111
Pediatrics in Janesville, WI

Active since July 12, 2006PECOS Enrolled
3524 E MILWAUKEE ST, JANESVILLE, WI 53546(608) 756-7100(608) 756-4700 Get Directions Write a Review

NPPES record last updated: September 29, 2026. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Dr. Mark L Goelzer Md NPPES

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

DR. MARK L GOELZER MD (NPI 1619902111) is an individual pediatrics provider in Janesville, Wisconsin, licensed in Wisconsin (21490-20) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1619902111
Entity TypeIndividualMale
Primary Taxonomy208000000X
Provider Legal NameDR. MARK L GOELZERCredential: MD
Location Address3524 E MILWAUKEE STJanesville, WI 53546-1626
Mailing Address3524 E Milwaukee StJanesville, WI 53546-1626 · (608) 756-7100 · Fax (608) 756-4700
Phone(608) 756-7100
Fax(608) 756-4700
Sole ProprietorNo
Enumeration DateJuly 12, 2006
Last NPPES UpdateSeptember 29, 2026
✔ NPI 1619902111 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatricsAllopathic & Osteopathic Physicians
Taxonomy Code208000000X
License✔ Licensed in WI · 21490-20
Definition
A pediatrician is concerned with the physical, emotional and social health of children from birth to young adulthood. Care encompasses a broad spectrum of health services ranging from preventive healthcare to the diagnosis and treatment of acute and chronic diseases. A pediatrician deals with biological, social and environmental influences on the developing child, and with the impact of disease and dysfunction on development.
3524 E MILWAUKEE ST, Janesville, WI 53546
Open in Google Maps ↗

Other Identifiers 3

Medicaid1619902111WI
Medicaid30170700WI
OtherGOELZMARWI · Mercycare Insurance

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield, Group Health Cooperative-SCW, MercyCare 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 (PECOS)

Dr. Mark L Goelzer Md 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 Mark Goelzer reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Mercy Health System Corporation
3.0 mi
Mental Health (Including Community Mental Health Center)
903 MINERAL POINT AVE
Janesville, WI 53548
  • Reassigned Medicare billing, Wisconsin enrollment
  • 1,155 clinicians in this Medicare group
NPI 1669685129 (608) 756-5555

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 53546 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
$82.92 typical visit price
range $53.90 – $163.24
Typical copayment $20.73 (range $13.47 – $40.81)
Most-billed visit code 99203
Established Patient
$95.41 typical visit price
range $17.40 – $133.76
Typical copayment $23.85 (range $4.35 – $33.44)
Most-billed visit code 99214
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 20

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

REBECCA JEAN WEISSBURG PHYSICIAN ASSISTANT
Physician Assistant
3524 E MILWAUKEE ST
JANESVILLE, WI 53546
Rock County (608) 756-7100
DR. LAWRENCE M SHEA MD
Family Medicine
3524 E MILWAUKEE ST
JANESVILLE, WI 53546
Rock County (608) 756-7100
DR. HARLAN D EDELMAN MD
Orthopaedic Surgery (Hand Surgery)
3524 E MILWAUKEE ST
JANESVILLE, WI 53546
Rock County (608) 756-7100
MRS. LEAH LAMMERSFELD PT
Physical Therapist
3524 E MILWAUKEE ST
JANESVILLE, WI 53546
Rock County (608) 755-8687
JOSHUA T LEHR DPT
Physical Therapist
3524 E MILWAUKEE ST
JANESVILLE, WI 53546
Rock County (608) 756-7100
JOANNA L RYDER RD
Dietitian, Registered
3524 E MILWAUKEE ST
JANESVILLE, WI 53546
Rock County (608) 756-7100
KAUSERUZZAMAN A. KHAN MD
Internal Medicine
3524 E MILWAUKEE ST
JANESVILLE, WI 53546
Rock County (608) 756-7100
STEPHEN L MERRILL MD
Emergency Medicine
3524 E MILWAUKEE ST
JANESVILLE, WI 53546
Rock County (608) 756-7100

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 Mark Goelzer's NPI number?

The NPI number for Mark Goelzer is 1619902111. It was assigned to this individual provider in the NPPES registry on July 12, 2006.

Where is Mark Goelzer located?

Mark Goelzer practices at 3524 E Milwaukee St, Janesville, WI 53546. The listed phone number is (608) 756-7100.

What is Mark Goelzer's specialty?

The primary specialty registered for this NPI is Pediatrics with taxonomy code 208000000X.

Is Mark Goelzer enrolled in Medicare?

Yes. Mark Goelzer is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Mark Goelzer's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Mark Goelzer reassigns Medicare benefits to Mercy Health System Corporation (Janesville, 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 Mark Goelzer's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Mark Goelzer accept?

Health plans from Anthem Blue Cross and Blue Shield, Group Health Cooperative-SCW, MercyCare and MercyCare Health Plans list Mark Goelzer 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 Mark Goelzer was last updated on September 29, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 38 days 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.