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KAY F JOHNSON-KEYS MD
NPI 1043247190
Obstetrics & Gynecology in Janesville, WI

Active since June 26, 2006PECOS Enrolled
3400 E RACINE ST, JANESVILLE, WI 53546(608) 373-8000(608) 371-8928 Get Directions Write a Review

NPPES record last updated: April 12, 2023. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Apr 12, 2023, Nov 17, 2022, Feb 23, 2022 and 2 more (5 updates tracked since 2020).

About Kay F Johnson-keys Md NPPES

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

KAY F JOHNSON-KEYS MD (NPI 1043247190) is an individual obstetrics & gynecology provider in Janesville, Wisconsin, licensed in Indiana (01059804A) and active in the NPI registry since June 2006. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1043247190
Entity TypeIndividualFemale
Primary Taxonomy207V00000X
Provider Legal NameKAY F JOHNSON-KEYSCredential: MD
Location Address3400 E RACINE STJanesville, WI 53546-2344
Mailing Address1808 W Beltline HwyMadison, WI 53713-2334 · (608) 250-1497 · Fax (608) 250-1384
Phone(608) 373-8000
Fax(608) 371-8928
Sole ProprietorNo
Enumeration DateJune 26, 2006
Last NPPES UpdateApril 12, 20235 updates tracked since enumeration
NPPES CertifiedApril 12, 2023
✔ NPI 1043247190 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyObstetrics & GynecologyAllopathic & Osteopathic Physicians
Taxonomy Code207V00000X
License✔ Licensed in IN · 01059804A
Definition
An obstetrician/gynecologist possesses special knowledge, skills and professional capability in the medical and surgical care of the female reproductive system and associated disorders. This physician serves as a consultant to other physicians and as a primary physician for women.
Also ListedObstetrics & Gynecology · ObstetricsTaxonomy 207VX0000X · License 63731-20 (WI)
3400 E RACINE ST, Janesville, WI 53546
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Other Names 1

Other Name (5)Kay F Johnson Md

Other Identifiers 2

Medicaid200501040IN
Medicaid2920361OH

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Aspirus Health Plan.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Kay F Johnson-keys 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 Reassignments

13

Medicare enrollment records show Kay Johnson-keys reassigns Medicare billing to 13 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Mercy Health System Corporation
2.9 mi
Multi-Specialty
580 N WASHINGTON ST
Janesville, WI 53548
  • Reassigned Medicare billing, Wisconsin enrollment
  • 1,155 clinicians in this Medicare group
NPI 1598718603 (608) 741-7630
Beaver Dam Community Hosptials Inc
47 mi
Family Medicine
1580 W JAMES ST
Columbus, WI 53925
  • Reassigned Medicare billing, Wisconsin enrollment
  • Medicare enrollment name: Beaver Dam Community Hospitals Inc.
  • 1,447 clinicians in this Medicare group
NPI 1275833659 (920) 350-0235
Mchs Hospitals Inc
126 mi
Clinic/Center
440 24TH ST S
Wisconsin Rapids, WI 54494
  • Reassigned Medicare billing, Wisconsin enrollment
  • Also billed through NPI 1952890873 (Wisconsin)
  • 2,476 clinicians in this Medicare group
NPI 1568188589 (715) 751-6200
Marshfield Clinic Inc
150 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
154 mi
Clinic/Center
N3708 RIVER AVE
Neillsville, WI 54456
  • Reassigned Medicare billing, Wisconsin enrollment
  • Also billed through NPI 1346239373 (Wisconsin)
  • 1,440 clinicians in this Medicare group
NPI 1033701800 (715) 743-3101
Aspirus Medford Hospital & Clinics, Inc.
172 mi
Rural Health
729 PINE ST
Athens, WI 54411
  • Reassigned Medicare billing, Wisconsin enrollment
  • 376 clinicians in this Medicare group
NPI 1760912919 (715) 748-8100
Lakeview Medical Center Inc Of Rice Lake
226 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
Flambeau Hospital Inc
237 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
Aspirus Ironwood Hospital & Clinics Inc.
237 mi
Ophthalmology
229 W GENESEE ST
Iron River, MI 49935
  • Reassigned Medicare billing, Michigan enrollment
  • 244 clinicians in this Medicare group
NPI 1073293999 (906) 265-9931
Aspirus Ironwood Hospital & Clinics Inc.
237 mi
Ophthalmology
229 W GENESEE ST
Iron River, MI 49935
  • Reassigned Medicare billing, Michigan enrollment
  • 264 clinicians in this Medicare group
NPI 1073293999 (906) 265-9931

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
$123.69 typical visit price
range $53.90 – $163.24
Typical copayment $30.92 (range $13.47 – $40.81)
Most-billed visit code 99204
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.

Referred Medical Equipment & Supplies CMS DME claims 2

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Mycophenolate mofetil, oral, 250 mg J7517
Treatment-Treatment - Miscellaneous · category RX029N
2 suppliers23 claims4,280 services$0.19 avg. paid by Medicare
Pharmacy supply fee for oral anti-cancer, oral anti-emetic or immunosuppressive drug(s); for a subsequent prescription in a 30-day period Q0512
Treatment-Chemotherapy · category RH012N
2 suppliers23 claims23 services$12.62 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

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.

SSM HEALTH CARE OF WISCONSIN, INC.
Durable Medical Equipment & Medical Supplies
3400 E RACINE ST
JANESVILLE, WI 53546
Rock County (608) 373-8000
LAWRENCE K BECK CRNA
Nurse Anesthetist, Certified Registered
3400 E RACINE ST
JANESVILLE, WI 53546
Rock County (608) 373-8000
JOHN CURRIE
Pharmacist (Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist)
3400 E RACINE ST
JANESVILLE, WI 53546
Rock County (608) 373-8550
JENNIFER SUE CANIK OT
Occupational Therapist
3400 E RACINE ST
JANESVILLE, WI 53546
Rock County (608) 373-8000
MARIA C GONZALEZ CRNA
Nurse Anesthetist, Certified Registered
3400 E RACINE ST
JANESVILLE, WI 53546
Rock County (608) 373-8000
SSM HEALTH CARE OF WISCONSIN, INC.
General Acute Care Hospital
3400 E RACINE ST
JANESVILLE, WI 53546
Rock County (608) 373-8000
KELLY MCMEANS
Nurse Anesthetist, Certified Registered
3400 E RACINE ST
JANESVILLE, WI 53546
Rock County (608) 373-8000
TERESA L. NEHLS
Nurse Practitioner
3400 E RACINE ST
JANESVILLE, WI 53546
Rock County (608) 373-8000

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 Kay Johnson-keys's NPI number?

The NPI number for Kay Johnson-keys is 1043247190. It was assigned to this individual provider in the NPPES registry on June 26, 2006. The provider is also known as Kay F Johnson MD.

Where is Kay Johnson-keys located?

Kay Johnson-keys practices at 3400 E Racine St, Janesville, WI 53546. The listed phone number is (608) 373-8000.

What is Kay Johnson-keys's specialty?

The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.

Is Kay Johnson-keys enrolled in Medicare?

Yes. Kay Johnson-keys is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Kay Johnson-keys's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Kay Johnson-keys reassigns Medicare benefits to 13 organizations: Mercy Health System Corporation (Janesville, WI), Beaver Dam Community Hosptials Inc (Columbus, WI), Mchs Hospitals Inc (Wisconsin Rapids, WI), Marshfield Clinic Inc (Marshfield, WI), Memorial Hospital Inc (Neillsville, WI) and 8 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 Kay Johnson-keys's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Kay Johnson-keys accept?

Health plans from Aspirus Health Plan list Kay Johnson-keys 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 Kay Johnson-keys was last updated on April 12, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.