Dr. Walter G. Kao, MD
- Medicare services, 2024
- 376
- Medicare patients, 2024
- 304
- Part D claims, 2024
- 4,444
- MIPS score, 2024
- 92
- Hospital affiliations
- 4
- Practice address
- 500 Wind Ridge Dr, Wausau, WI 54401
- Practice phone
- Call (715) 847-2611
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Aspirus Cardiology
Wausau, Wisconsin
Find Dr. Kao's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Walter G. Kao is a cardiologist in Wausau, Wisconsin
Dr. Kao practices at Aspirus Cardiology in Wausau, Wisconsin.
Dr. Kao's NPI, 1457328940, was assigned on March 2, 2006. Dr. Kao graduated from JS Weill Medical College, Cornell University in 1984. Dr. Kao holds Wisconsin license 47856.
- NPI
- 1457328940NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4981662350
- NPI enumeration date
- March 2, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (715) 847-2611
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 68
- Medical school graduation
- 1984
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Walter G. Kao practices at Aspirus Cardiology in Wausau, Wisconsin
Dr. Kao's primary practice is Aspirus Cardiology, at 500 Wind Ridge Dr, Wausau, WI 54401 in Marathon County. The practice phone is (715) 847-2611.
- Aspirus Cardiology500 Wind Ridge Dr, Wausau, WI 54401 · Marathon CountyPhone(715) 847-2611
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Walter G. Kao is affiliated with 9 sites of care and 5 medical groups
Dr. Kao's primary practice is Aspirus Cardiology in Wausau, Wisconsin. Dr. Kao is also affiliated with Aspirus Wausau Hospital. The medical group on file is Aspirus Medical Group. Dmand AI also links Dr. Kao to 3 more hospitals, 4 medical groups, 3 group practices and clinics and 1 rural health clinic, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Walter G. Kao's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Kao practices, 8 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Aspirus Cardiology | Available with a free account |
| +8 more sites and 4 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Walter G. Kao is one of 354 cardiologists in Wisconsin
Cardiovascular disease is Dr. Kao's primary specialty in the NPI Registry, under taxonomy code 207RC0000X. Dr. Kao is licensed in Wisconsin.
Specialties and state licenses
- Cardiovascular disease, WisconsinPrimary
Cardiologists near Dr. Kao
Counts of cardiologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Walter G. Kao billed Medicare for 376 services in 2024
CMS data shows 376 Medicare services from Dr. Kao across 4 procedure codes in 2024, for 304 Medicare patients. Medicare paid $33,739 for them.
Dr. Kao's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 2112024: 28836%
- Tests and treatments
- 2023: 872024: 881%
Where Dr. Kao's Medicare services took place, 2024
- In an office28877%
- In a facility8823%
Dr. Kao compared with the Wisconsin median for cardiologists, 2024
- Dr. Kao
- Wisconsin median
- Medicare services
- 376vs 1,12467% below
- Medicare patients
- 304vs 79262% below
- Part D claims
- 4,319vs 1,1543.7 times
Medians across 359 cardiologists in Wisconsin with Dmand AI profiles that report each measure.
Dr. Kao's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Kao and other cardiologists in Wisconsin.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Walter G. Kao treated 304 Medicare patients in 2024, average age 74
CMS counts 304 Medicare patients who saw Dr. Kao in 2024. The largest group is 65 to 74, with 160 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 12% are also on Medicaid. Their average risk score is 1.19, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Kao's median patient age at 72, with 43% women.
Dr. Kao's Medicare patients by age, 2024
Dr. Kao's Medicare patients by sex, 2024
- Women15049%
- Men15451%
Chronic conditions among Dr. Kao's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis42%
- Ischemic heart disease39%
- Atrial fibrillation38%
- Heart failure31%
- Diabetes30%
- Chronic kidney disease27%
Share of Medicare patients with each condition. A patient can have several.
Dr. Kao's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 72
Patient panel by sex, all payers
- Women43%
- Men57%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Walter G. Kao wrote 4,444 Medicare Part D claims in 2024
In 2024, Dr. Kao wrote 4,444 Medicare Part D claims for 632 patients. 86% of them were for generic drugs. CMS names the drug for 4,319 of them, across 39 drugs with 11 or more claims each, at $525,701 in total drug cost. In 2023, CMS named 2,621 claims across 37 drugs.
Dr. Kao's Part D claims by kind of drug, 2024
- Generic3,819 claims86%
- Brand-name625 claims14%
Dr. Kao's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 2,6212024: 4,31965%
Drugs named by CMS: 39 in 2024, 37 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Walter G. Kao scored 92 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 92 out of 100 for Dr. Kao for performance year 2024, reported as part of a group. Dr. Kao accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Kao's MIPS scores, performance year 2024
- 92of 100Final score
- 91.1of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 78of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Walter G. Kao received $167 in industry payments from 2023 to 2025
CMS Open Payments shows 9 general payments to Dr. Kao from 6 drug and device companies from 2023 to 2025. Food and beverage make up the largest share, 100% of the total. Boehringer Ingelheim Pharmaceuticals, Inc. paid the most, $71.
General payments to Dr. Kao by program year, 2023 to 2025
Companies that paid Dr. Kao the most, 2023 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Walter G. Kao graduated from JS Weill Medical College, Cornell University
Dr. Kao graduated from JS Weill Medical College, Cornell University in 1984.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Walter G. Kao's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Walter G. Kao
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Walter G. Kao's NPI number?
Dr. Walter G. Kao's NPI number is 1457328940. It was assigned on March 2, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Walter G. Kao?
Dr. Walter G. Kao is a cardiologist in Wausau, Wisconsin. The primary specialty in the NPI Registry is Cardiovascular Disease Physician (taxonomy code 207RC0000X).
Where does Dr. Walter G. Kao practice?
Dr. Kao practices at 500 Wind Ridge Dr, Wausau, WI 54401. Dr. Kao's primary practice is Aspirus Cardiology in Wausau, Wisconsin. Dmand AI also links Dr. Kao to 3 hospitals, 4 medical groups, 3 group practices and clinics and 1 rural health clinic.
What is Dr. Walter G. Kao's office phone number?
The practice phone on file for Dr. Kao is (715) 847-2611.
What is Dr. Walter G. Kao's medical license number?
Dr. Kao holds Wisconsin license 47856.
Which hospitals is Dr. Walter G. Kao affiliated with?
Dr. Kao is affiliated with Aspirus Wausau Hospital. Dmand AI links Dr. Kao to 3 more hospitals.
What medical group is Dr. Walter G. Kao part of?
Dr. Kao is linked to Aspirus Medical Group. Dmand AI links Dr. Kao to 4 more medical groups.
Does Dr. Walter G. Kao accept Medicare?
Yes. CMS data shows Dr. Kao billed Medicare for 376 services in 2024, and Dr. Kao accepts Medicare assignment.
What is Dr. Walter G. Kao's MIPS score?
Dr. Kao's MIPS final score for performance year 2024 is 92 out of 100, reported as part of a group.
How many Medicare patients does Dr. Walter G. Kao see?
CMS counts 304 Medicare patients who saw Dr. Kao in 2024, with an average age of 74.
Show 5 more questionsShow fewer questions
What services does Dr. Walter G. Kao bill to Medicare?
In 2024, Dr. Kao's most billed Medicare services were office visit, established patient (99214), heart test or procedure (93016) and office visit, new patient (99205).
Where did Dr. Walter G. Kao go to medical school?
Dr. Kao graduated from JS Weill Medical College, Cornell University in 1984.
What drugs does Dr. Walter G. Kao prescribe most?
In 2024 Medicare Part D data, Dr. Kao's most prescribed drugs by claims were Metoprolol Succinate, Lisinopril and Amlodipine Besylate.
Has Dr. Walter G. Kao received payments from drug or device companies?
CMS Open Payments shows $167 in general payments to Dr. Kao from 6 companies from 2023 to 2025. The largest total came from Boehringer Ingelheim Pharmaceuticals, Inc.
How long has Dr. Walter G. Kao been practicing?
Dr. Kao graduated from medical school in 1984, 42 years ago.
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