2026 NPPES data Trauma Surgery Physician NPI 1164470662 M.D.
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Ann O'Rourke, M.D.

Trauma Surgery Physician in Madison, Wisconsin. This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 959 in Trauma Surgery Physician, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.

Federal data, no proprietary rating. We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
46
Medicare Part D claims · Trauma Surgery Physician avg: 70
Generic prescribing
0%
generic claims · 67% brand-name · higher generic rates reduce patient out-of-pocket costs
Compiled from official public sources by the PlainDoctor editorial team.

What the federal data shows

Ann O'Rourke, M.D. filed 46 Medicare Part D claims in 2023 as a Trauma Surgery Physician in Madison, Wisconsin, prescribing 0% generic.

46
Part D claims, 2023
0%
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.

Ann O'Rourke, M.D.'s Medicare Part D volume vs every U.S. prescriber

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

46 0th percentile higher than 0% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). This entry sits in this band. 200–400: 182,923 prescribers (13%). Above this entry. 400–600: 90,619 prescribers (7%). Above this entry. 600–800: 56,224 prescribers (4%). Above this entry. 800–1,000: 40,919 prescribers (3%). Above this entry. 1,000–1,200: 31,827 prescribers (2%). Above this entry. 1,200–1,400: 26,224 prescribers (2%). Above this entry. 1,400–1,600: 21,710 prescribers (2%). Above this entry. 1,600–1,800: 19,072 prescribers (1%). Above this entry. 1,800–2,000: 16,451 prescribers (1%). Above this entry. 2K+: 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)

Ann O'Rourke, M.D. 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 Ann O'Rourke, M.D.?

Quality data not reported

NPI registry status

Active

Issued 05/05/2006

NPI 1164470662

Primary specialty

Trauma Surgery Physician

Niche

959 US NPIs in this specialty

Medicare Part D claims

46 34% vs specialty avg

2023 prescription claims

Specialty avg: 70

Specialty distribution in Wisconsin

How Trauma Surgery Physician compares to other specialties among Wisconsin providers

Wisconsin providers
Physical Therapist - 5.6%Physical Therapist5.6%Pharmacist - 4.8%Pharmacist4.8%Registered Nurse - 4.5%Registered Nurse4.5%Professional Counselor - 3.3%Professional Counselor3.3%Student in an Organized Health Care Education/Training Program - 3.3%Student in an Organized Health Care Education/Training Program3.3%Family Medicine Physician - 3.2%Family Medicine Physician3.2%Trauma Surgery Physician - 0%Trauma Surgery Physician0%
Largest specialties in Wisconsin (% of in-state providers)

Board certification

Not published by CMS

CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Trauma Surgery Physician. Verify directly:

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).

Ann O'Rourke, M.D. appears in the CMS NPPES registry as a Trauma Surgery Physician provider holding M.D. credentials at UNIVERSITY OF WISCONSIN HOSPITAL AND CLINICS, Madison, WI, 53792, with a listed phone of (608) 263-7502. NPI 1164470662 was issued on 05/05/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what O'Rourke 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 46 prescription claims written by this provider, covering N/A Medicare beneficiaries and totaling roughly $8K in drug spend, split 67% brand-name and 0% 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.

Trauma Surgery Physician is a narrow specialty nationwide, with 959 enrolled providers across 49 states and an average of 70 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

UNIVERSITY OF WISCONSIN HOSPITAL AND CLINICS
Madison, WI 53792

Provider Details

NPI 1164470662
Specialty Trauma Surgery Physician
Credentials M.D.
Gender Female
NPI Issued 05/05/2006

Hospital and facility affiliations

Facilities where Ann O'Rourke, M.D. 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 · Brand-heavy

Ann O'Rourke, M.D. - brand share 67.0%
Trauma Surgery Physician average

67% brand-name claims vs 0% generic, on 46 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.

46
Total Claims
$8K
Total Drug Cost
N/A
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
47
Total Day Supply
930
Brand vs Generic
67% brand / 0% generic
Brand Drug Cost
$7K

Patient Demographics

Average Patient Age
72.8 years
Avg HCC Risk Score
2.62

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Trelegy Ellipta
Fluticasone/Umeclidin/Vilanter
15
Furosemide
14

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

Trauma Surgery Physician Overview

How Ann O'Rourke, M.D. fits within the Trauma Surgery Physician landscape nationally.

959
Trauma Surgery Physician Providers in US
49
States with Trauma Surgery Physician
70
Avg Claims per Provider

Ann O'Rourke, M.D.'s 46 claims are below the specialty average of 70.

Nearby Trauma Surgery Physician Providers in Wisconsin

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

Compare Trauma Surgery Physician nationally: see state-by-state distribution →

Before you book an appointment

Use this federal record as your verification checklist, not as a recommendation.

  • Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
  • Check the active license and any disciplinary history with the Wisconsin medical board, federal registration is not a license check. Credential verification guide
  • Weigh a second option: compare this provider with a nearby Trauma Surgery Physician peer on Medicare volume and prescribing patterns. Compare providers

Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.

Frequently Asked Questions

What is Ann O'Rourke, M.D.'s specialty?
Ann O'Rourke, M.D. specializes in Trauma Surgery Physician and practices in Madison, Wisconsin. Credentials: M.D..
How much does Ann O'Rourke, M.D. prescribe under Medicare Part D?
In 2023, Ann O'Rourke, M.D. wrote 46 Medicare Part D claims totaling $8K in drug costs for N/A beneficiaries.
Where is Ann O'Rourke, M.D. located?
Ann O'Rourke, M.D. is located at UNIVERSITY OF WISCONSIN HOSPITAL AND CLINICS, Madison, WI, 53792. Phone: (608) 263-7502.
What is Ann O'Rourke, M.D.'s NPI number?
Ann O'Rourke, M.D.'s National Provider Identifier (NPI) is 1164470662, issued on 05/05/2006.
Does Ann O'Rourke, M.D. prescribe more brand-name or generic drugs?
Ann O'Rourke, M.D.'s prescribing is 67% brand-name and 0% generic drugs by claim count, with $7K in brand drug costs.
How many Trauma Surgery Physician providers are there in the US?
There are 959 Trauma Surgery Physician providers across 49 states in the US. The average Trauma Surgery Physician provider writes 70 Medicare Part D claims per year.
What drugs does Ann O'Rourke, M.D. prescribe most often?
Based on 2023 Medicare Part D data, Ann O'Rourke, M.D.'s most frequently prescribed drugs include Trelegy Ellipta, Furosemide. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Ann O'Rourke, M.D. accept Medicare?
Ann O'Rourke, M.D. appears in CMS Medicare data with 46 Part D claims and N/A Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Ann O'Rourke, M.D.'s credentials?
Ann O'Rourke, M.D.'s NPI is 1164470662 with credentials M.D.. 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

Compiled from official public sources by the PlainDoctor editorial team.