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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.

SHAUNNA M LYON MD
NPI 1891904546
Pediatrics in Lake Geneva, WI

Active since May 21, 2007PECOS Enrolled
N2950 STATE ROAD 67, LAKE GENEVA, WI 53147(262) 245-0535(262) 245-2248 Get Directions Write a Review

NPPES record last updated: September 29, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Shaunna M Lyon Md NPPES

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

SHAUNNA M LYON MD (NPI 1891904546) is an individual pediatrics provider in Lake Geneva, Wisconsin, licensed in Wisconsin (55298-20) and active in the NPI registry since May 2007. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1891904546
Entity TypeIndividualFemale
Primary Taxonomy208000000X
Provider Legal NameSHAUNNA M LYONCredential: MD
Location AddressN2950 STATE ROAD 67Lake Geneva, WI 53147-2655
Mailing AddressN2950 State Road 67Lake Geneva, WI 53147-2655 · (262) 245-0535 · Fax (262) 245-2248
Phone(262) 245-0535
Fax(262) 245-2248
Sole ProprietorNo
Enumeration DateMay 21, 2007
Last NPPES UpdateSeptember 29, 2026
✔ NPI 1891904546 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatricsAllopathic & Osteopathic Physicians
Taxonomy Code208000000X
Licenses✔ Licensed in WI · 55298-20✔ Licensed in IA · R-7249✔ Licensed in IA · 37206
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.
N2950 STATE ROAD 67, Lake Geneva, WI 53147
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Other Identifiers 3

Other54309IA · Wellmark Bcbs
Medicaid1891904546WI
OtherLYONSHAWI · Mercycare Insurance

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Group Health Cooperative-SCW, MercyCare, MercyCare Health Plans.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Shaunna M Lyon 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 Shaunna Lyon reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Mercy Health System Corporation
Same address
Critical Access
N2950 STATE ROAD 67
Lake Geneva, WI 53147
  • Reassigned Medicare billing, Wisconsin enrollment
  • Also billed through NPI 1598718603 (Wisconsin)
  • 271 clinicians in this Medicare group
NPI 1699728550 (262) 245-0535

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 53147 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.

JULIE A RICE LPC
Counselor (Professional)
N2950 STATE ROAD 67
LAKE GENEVA, WI 53147
Walworth County (800) 637-2901
DR. CULLEN TIMOTHY KEHOE DO
Emergency Medicine
N2950 STATE ROAD 67
LAKE GENEVA, WI 53147
Walworth County (262) 245-4990
ASHLEY E. BORO OT
Occupational Therapist
N2950 STATE ROAD 67
LAKE GENEVA, WI 53147
Walworth County (262) 245-4990
MARK E PFEIFER DPM
Podiatrist
N2950 STATE ROAD 67
LAKE GENEVA, WI 53147
Walworth County (262) 245-0535
MADALYN R DOUGLAS DPT
Physical Therapist
N2950 STATE ROAD 67
LAKE GENEVA, WI 53147
Walworth County (262) 245-4980
MS. LISA LYNN PILGARD RPH
Pharmacist
N2950 STATE ROAD 67
LAKE GENEVA, WI 53147
Walworth County (262) 245-2319
MITCHELL SHELEY MD
Emergency Medicine
N2950 STATE ROAD 67
LAKE GENEVA, WI 53147
Walworth County (608) 756-6871
CARLY DIANE TRIEBENSEE PA
Physician Assistant
N2950 STATE ROAD 67
LAKE GENEVA, WI 53147
Walworth County (262) 245-0535

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 Shaunna Lyon's NPI number?

The NPI number for Shaunna Lyon is 1891904546. It was assigned to this individual provider in the NPPES registry on May 21, 2007.

Where is Shaunna Lyon located?

Shaunna Lyon practices at N2950 State Road 67, Lake Geneva, WI 53147. The listed phone number is (262) 245-0535.

What is Shaunna Lyon's specialty?

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

Is Shaunna Lyon enrolled in Medicare?

Yes. Shaunna Lyon is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Shaunna Lyon's services?

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

What insurance does Shaunna Lyon accept?

Health plans from Group Health Cooperative-SCW, MercyCare and MercyCare Health Plans list Shaunna Lyon 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 Shaunna Lyon 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 25 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.