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WALTER G KAO MD
NPI 1457328940
Internal Medicine - Cardiovascular Disease in Madison, WI

Active since March 02, 2006PECOS EnrolledAccepts Medicare Assignment
84.55/100
CMS Quality Rating
700 S PARK ST, MADISON, WI 53715(608) 260-2900(608) 260-2967 Get Directions Write a Review

NPPES record last updated: April 14, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Apr 14, 2026, Feb 8, 2019, Oct 2, 2018 and 1 more (4 updates tracked since 2016).

About Walter G Kao Md NPPES

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

WALTER G KAO MD (NPI 1457328940) is an individual cardiovascular disease provider in Madison, Wisconsin, licensed in Wisconsin (47856) and active in the NPI registry since March 2006. He is enrolled in Medicare PECOS, is affiliated with Aspirus Stevens Point Hospital & Clinics, Inc., and is a graduate of Js Weill Medical College, Cornell University (1984).

NPPES Registry Identity

NPI1457328940
Entity TypeIndividualMale
Primary Taxonomy207RC0000X
Provider Legal NameWALTER G KAOCredential: MD
Location Address700 S PARK STMadison, WI 53715
Mailing Address700 S Park StMadison, WI 53715-1830 · (608) 260-2900 · Fax (608) 260-2956
Phone(608) 260-2900
Fax(608) 260-2967
Sole ProprietorNo
Medical School CMSJs Weill Medical College, Cornell UniversityGraduated 1984
Enumeration DateMarch 2, 2006
Last NPPES UpdateApril 14, 20264 updates tracked since enumeration
NPPES CertifiedApril 14, 2026
✔ NPI 1457328940 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Cardiovascular DiseaseAllopathic & Osteopathic Physicians
Taxonomy Code207RC0000X
License✔ Licensed in WI · 47856
Definition
An internist who specializes in diseases of the heart and blood vessels and manages complex cardiac conditions such as heart attacks and life-threatening, abnormal heartbeat rhythms.
700 S PARK ST, Madison, WI 53715
Open in Google Maps ↗

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield, Aspirus Health Plan, Group Health Cooperative-SCW and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Walter G Kao 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 ID4981662350
PECOS Enrollment IDI20080612000399
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.

Areas of Expertise CMS Part B claims 4

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
142 services110 patients
Exercise or drug-induced heart stress test with electrocardiogram (ecg) with supervision by physician 93016
An exercise or drug-induced heart stress test with ECG involves monitoring your heart's activity while it's under stress, either from exercise or medication. A doctor supervises the entire procedure to ensure safety and accuracy in results. This test helps detect heart problems.
88 services87 patients
New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more 99205
This is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.
83 services83 patients
Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215
This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.
63 services57 patients

Hospital Affiliations CMS Care Compare 4

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

Aspirus Stevens Point Hospital & Clinics, Inc.

Acute Care Hospitals · Stevens Point, WI
4/5 CMS rating
OwnershipVoluntary non-profit - Church
CMS Certification Number520002
Location900 Illinois AveStevens Point, WI 54481 · Portage County
Emergency services Birthing friendly

Aspirus Wausau Hospital

Acute Care Hospitals · Wausau, WI
4/5 CMS rating
OwnershipProprietary
CMS Certification Number520030
Location333 Pine Ridge BlvdWausau, WI 54401 · Marathon County
Emergency services Birthing friendly

Aspirus Riverview Hospital & Clinics Inc

Acute Care Hospitals · Wisconsin Rapids, WI
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number520033
Location410 Dewey StWisconsin Rapids, WI 54495 · Wood County
Emergency services

Divine Savior Healthcare

Acute Care Hospitals · Portage, WI
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number520041
Location2817 New Pinery RoadPortage, WI 53901 · Columbia County
Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 53715 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.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

84.55/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality91.81
Promoting Interoperability100
Improvement Activities40
Cost53.8

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.

CHRISTOPHER DO
Physician Assistant
700 S PARK ST
MADISON, WI 53715
Dane County (608) 251-6100
JEREMI THOMAS OLSON PA-C
Physician Assistant (Surgical)
700 S PARK ST, DEAN ST. MARY'S OUTPATIENT CENTER
MADISON, WI 53715
Dane County (608) 260-2900
TIMOTHY J MORTON PA-C
Physician Assistant
700 S PARK ST, DEAN MEDICAL CENTER
MADISON, WI 53715
Dane County (608) 251-6100
STEPHEN H VANDER SLUIS
Anesthesiology
700 S PARK ST
MADISON, WI 53715
Dane County (608) 251-6100
BENJAMIN KLEIBER M.D.
Internal Medicine (Cardiovascular Disease)
700 S PARK ST, DEAN & ST. MARY'S OUTPATIENT CENTER
MADISON, WI 53715
Dane County (608) 260-2900
ERIN M MULLAN-TOWNS PA-C
Physician Assistant
700 S PARK ST
MADISON, WI 53715
Dane County (608) 260-2900
CONNIE SUE MCCULLICK APNP
Nurse Practitioner
700 S PARK ST
MADISON, WI 53715
Dane County (608) 251-6100
JUSTIN ALLEN LEHRKE CRNA
Nurse Anesthetist, Certified Registered
700 S PARK ST
MADISON, WI 53715
Dane County (608) 251-6100

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 Walter Kao's NPI number?

The NPI number for Walter Kao is 1457328940. It was assigned to this individual provider in the NPPES registry on March 2, 2006.

Where is Walter Kao located?

Walter Kao practices at 700 S Park St, Madison, WI 53715. The listed phone number is (608) 260-2900.

What is Walter Kao's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.

Is Walter Kao enrolled in Medicare?

Yes. Walter Kao 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.

What insurance does Walter Kao accept?

Health plans from Anthem Blue Cross and Blue Shield, Aspirus Health Plan, Group Health Cooperative-SCW, HealthPartners and Medica and 2 other insurers list Walter Kao 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 Walter Kao affiliated with any hospitals?

According to CMS data, Walter Kao is affiliated with Aspirus Stevens Point Hospital & Clinics, Inc., Aspirus Wausau Hospital, Aspirus Riverview Hospital & Clinics Inc and Divine Savior Healthcare.

When was this NPI record last updated?

The NPPES record for Walter Kao was last updated on April 14, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 months 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.