2026 NPPES data Cardiovascular Disease Physician NPI 1215900022 MD
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THOMAS WALLHAUS, MD

Cardiovascular Disease Physician in MADISON, Wisconsin. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
Prescribing volume
2K
Medicare Part D claims · 261 beneficiaries · Cardiovascular Disease Physician avg: 3K
Generic prescribing
85%
generic claims · 15% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

THOMAS WALLHAUS, MD filed 1,731 Medicare Part D claims in 2023 as a Cardiovascular Disease Physician in MADISON, Wisconsin, prescribing 85% generic.

2K
Part D claims, 2023
85%
generic prescribing
Likely
board-certified (heuristic)

Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) — no proprietary rating or editorial opinion is applied.

THOMAS WALLHAUS, MD's Medicare Part D volume vs every U.S. prescriber

Total Medicare Part D claims, 2023 — across all CMS prescribers nationally

1,731 Top 17% higher than 83% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). Below this entry. 400–600: 90,619 prescribers (7%). Below this entry. 600–800: 56,224 prescribers (4%). Below this entry. 800–1,000: 40,919 prescribers (3%). Below this entry. 1,000–1,200: 31,827 prescribers (2%). Below this entry. 1,200–1,400: 26,224 prescribers (2%). Below this entry. 1,400–1,600: 21,710 prescribers (2%). Below this entry. 1,600–1,800: 19,072 prescribers (1%). This entry sits in this band. 1,800–2,000: 16,451 prescribers (1%). Above this entry. 2,000–2,200: 213,991 prescribers (16%). Above this entry. This provider 0 2K+ every Part D prescriber (claims/yr), bucketed by value

Each bar is a band; taller bars hold more prescribers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source CMS Medicare Part D Prescriber Public Use File · 2023

Board certification likely (heuristic — not verified)

THOMAS WALLHAUS, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 1 hospital affiliation — signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

What does the federal data show about THOMAS WALLHAUS, MD?

Quality data not reported

NPI registry status

Active

Issued 02/10/2006

NPI 1215900022

Primary specialty

Cardiovascular Disease Physician

Mid-sized

24,795 US NPIs in this specialty

Medicare Part D claims

1,731 43% vs specialty avg

2023 prescription claims

Specialty avg: 3,033

Specialty distribution in Wisconsin

How Cardiovascular Disease Physician compares to other specialties among Wisconsin providers

Wisconsin providers

Cardiovascular Disease Physician share within Wisconsin

1. Cardiovascular Disease Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Cardiovascular Disease Physician share within Wisconsin

Specialty board-certification context

Estimated specialty board-certified rate — Cardiovascular Disease Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Cardiovascular Disease Physician ABMS/AOA estimate

Est. board-certified rate (Cardiovascular Disease Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Cardiovascular Disease Physician) — ABMS / AOA estimate

The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.

Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).

THOMAS WALLHAUS, MD appears in the CMS NPPES registry as a Cardiovascular Disease Physician provider holding MD credentials at 2601 W BELTLINE HWY STE 200, MADISON, WI, 53713, with a listed phone of (608) 287-2434. NPI 1215900022 was issued on 02/10/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what WALLHAUS most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

Medicare Part D records for calendar year 2023 show 1,731 prescription claims written by this provider, covering 261 Medicare beneficiaries and totaling roughly $339K in drug spend, split 15% brand-name and 85% generic by claim count. These figures capture only Medicare Part D — commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy.

Cardiovascular Disease Physician is a mid-sized specialty nationwide, with 24,795 enrolled providers across 54 states and an average of 3,033 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline. Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist — always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.

Practice Address

2601 W BELTLINE HWY STE 200
MADISON, WI 53713

Provider Details

NPI 1215900022
Specialty Cardiovascular Disease Physician
Credentials MD
Gender Male
NPI Issued 02/10/2006

Hospital and facility affiliations

Facilities where THOMAS WALLHAUS, MD bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" — a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.

UNIVERSITY OF WISCONSIN MEDICAL FOUNDATION INC
MADISON, WI

Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).

Brand vs generic prescribing mix · Typical

THOMAS WALLHAUS, MD — brand share 15.0%
Specialty average (est.)

15% brand-name claims vs 85% generic, on 1,731 2023 Medicare Part D claims.

The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

1,731
Total Claims
$339K
Total Drug Cost
261
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
4,426
Total Day Supply
131,402
Brand vs Generic
15% brand / 85% generic
Brand Drug Cost
$303K
Generic Drug Cost
$37K

Patient Demographics

Average Patient Age
76.3 years
Avg HCC Risk Score
1.46
Gender Split
36% female / 64% male
Age Distribution
<65: 11, 65-74: 100, 75-84: 111, 85+: 39

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

What THOMAS WALLHAUS, MD prescribes most

Top Medicare Part D drugs by claim count, 2023

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2023
Drug Claims
Atorvastatin Calcium
154
Amlodipine Besylate
153
Metoprolol Succinate
144
Eliquis
Apixaban
131
Losartan Potassium
109
Ezetimibe
100
Rosuvastatin Calcium
86
Furosemide
79
Carvedilol
74
Spironolactone
71

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

Cardiovascular Disease Physician Overview

How THOMAS WALLHAUS, MD fits within the Cardiovascular Disease Physician landscape nationally.

24,795
Cardiovascular Disease Physician Providers in US
54
States with Cardiovascular Disease Physician
3,033
Avg Claims per Provider

THOMAS WALLHAUS, MD's 1,731 claims are below the specialty average of 3,033.

Nearby Cardiovascular Disease Physician Providers in Wisconsin

Other clinicians with the same primary specialty enrolled in Wisconsin, drawn from the same CMS NPPES roster as WALLHAUS.

Compare Cardiovascular Disease Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is THOMAS WALLHAUS, MD's specialty?
THOMAS WALLHAUS, MD specializes in Cardiovascular Disease Physician and practices in MADISON, Wisconsin. Credentials: MD.
How much does THOMAS WALLHAUS, MD prescribe under Medicare Part D?
In 2023, THOMAS WALLHAUS, MD wrote 1,731 Medicare Part D claims totaling $339K in drug costs for 261 beneficiaries.
Where is THOMAS WALLHAUS, MD located?
THOMAS WALLHAUS, MD is located at 2601 W BELTLINE HWY STE 200, MADISON, WI, 53713. Phone: (608) 287-2434.
What is THOMAS WALLHAUS, MD's NPI number?
THOMAS WALLHAUS, MD's National Provider Identifier (NPI) is 1215900022, issued on 02/10/2006.
Does THOMAS WALLHAUS, MD prescribe more brand-name or generic drugs?
THOMAS WALLHAUS, MD's prescribing is 15% brand-name and 85% generic drugs by claim count, with $303K in brand drug costs.
How many Cardiovascular Disease Physician providers are there in the US?
There are 24,795 Cardiovascular Disease Physician providers across 54 states in the US. The average Cardiovascular Disease Physician provider writes 3,033 Medicare Part D claims per year.
What drugs does THOMAS WALLHAUS, MD prescribe most often?
Based on 2023 Medicare Part D data, THOMAS WALLHAUS, MD's most frequently prescribed drugs include Atorvastatin Calcium, Amlodipine Besylate, Metoprolol Succinate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does THOMAS WALLHAUS, MD accept Medicare?
THOMAS WALLHAUS, MD appears in CMS Medicare data with 1,731 Part D claims and 261 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify THOMAS WALLHAUS, MD's credentials?
THOMAS WALLHAUS, MD's NPI is 1215900022 with credentials MD. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.

Data Sources

Provider Directory
CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
Specialty Classification
NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
Prescribing Data
CMS Medicare Part D Prescriber Public Use File (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
Limitations
Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.

See our complete data methodology for details on how we collect and process government data.

Data as of April 2026 (NPPES) / 2023 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).

Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology