2026 NPPES data Gastroenterology Physician NPI 1346201795 MD
Verify on CMS →

Patrick Pfau, MD

Gastroenterology 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 16,567 in Gastroenterology 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
950
Medicare Part D claims · 302 beneficiaries · Gastroenterology Physician avg: 833
Generic prescribing
76%
generic claims · 24% 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

Patrick Pfau, MD filed 950 Medicare Part D claims in 2023 as a Gastroenterology Physician in Madison, Wisconsin, prescribing 76% generic.

950
Part D claims, 2023
76%
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.

Patrick Pfau, MD's Medicare Part D volume vs every U.S. prescriber

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

950 Top 25% higher than 75% 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%). This entry sits in this band. 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)

Patrick Pfau, 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 Patrick Pfau, MD?

Quality data not reported

NPI registry status

Active

Issued 03/28/2006

NPI 1346201795

Primary specialty

Gastroenterology Physician

Mid-sized

16,567 US NPIs in this specialty

Medicare Part D claims

950 14% vs specialty avg

2023 prescription claims

Specialty avg: 833

Specialty distribution in Wisconsin

How Gastroenterology 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%Gastroenterology Physician - 0.2%Gastroenterology Physician0.2%
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 Gastroenterology 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).

Patrick Pfau, MD appears in the CMS NPPES registry as a Gastroenterology Physician provider holding MD credentials at 600 HIGHLAND AVE, Madison, WI, 53792, with a listed phone of (608) 263-8094. NPI 1346201795 was issued on 03/28/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what Pfau 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 950 prescription claims written by this provider, covering 302 Medicare beneficiaries and totaling roughly $443K in drug spend, split 24% brand-name and 76% generic by claim count, with an opioid prescribing rate of 4.8%. 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.

Gastroenterology Physician is a mid-sized specialty nationwide, with 16,567 enrolled providers across 54 states and an average of 833 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

600 HIGHLAND AVE
Madison, WI 53792

Provider Details

NPI 1346201795
Specialty Gastroenterology Physician
Credentials MD
Gender Male
NPI Issued 03/28/2006

Hospital and facility affiliations

Facilities where Patrick Pfau, 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
Stoughton, 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

Patrick Pfau, MD - brand share 24.0%
Gastroenterology Physician average

24% brand-name claims vs 76% generic, on 950 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.

950
Total Claims
$443K
Total Drug Cost
302
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
1,483
Total Day Supply
37,481
Brand vs Generic
24% brand / 76% generic
Brand Drug Cost
$406K
Generic Drug Cost
$36K
Opioid Claims
46 (4.8% rate)
Antibiotic Claims
39

Patient Demographics

Average Patient Age
69.9 years
Avg HCC Risk Score
1.64
Gender Split
55% female / 45% male

Top Prescribed Drugs (Medicare Part D)

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

What Patrick Pfau, 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
Omeprazole
118
Creon
Lipase/Protease/Amylase
100
Famotidine
72
Pantoprazole Sodium
53
Nortriptyline Hcl
43
Ursodiol
37
Dicyclomine Hcl
28
Oxycodone Hcl
28
Linzess
Linaclotide
24
Diphenoxylate-Atropine
Diphenoxylate Hcl/Atropine
22

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

Gastroenterology Physician Overview

How Patrick Pfau, MD fits within the Gastroenterology Physician landscape nationally.

16,567
Gastroenterology Physician Providers in US
54
States with Gastroenterology Physician
833
Avg Claims per Provider

Patrick Pfau, MD's 950 claims are above the specialty average of 833.

Nearby Gastroenterology Physician Providers in Wisconsin

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

Compare Gastroenterology 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 Gastroenterology 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 Patrick Pfau, MD's specialty?
Patrick Pfau, MD specializes in Gastroenterology Physician and practices in Madison, Wisconsin. Credentials: MD.
How much does Patrick Pfau, MD prescribe under Medicare Part D?
In 2023, Patrick Pfau, MD wrote 950 Medicare Part D claims totaling $443K in drug costs for 302 beneficiaries.
Where is Patrick Pfau, MD located?
Patrick Pfau, MD is located at 600 HIGHLAND AVE, Madison, WI, 53792. Phone: (608) 263-8094.
What is Patrick Pfau, MD's NPI number?
Patrick Pfau, MD's National Provider Identifier (NPI) is 1346201795, issued on 03/28/2006.
Does Patrick Pfau, MD prescribe more brand-name or generic drugs?
Patrick Pfau, MD's prescribing is 24% brand-name and 76% generic drugs by claim count, with $406K in brand drug costs.
Does Patrick Pfau, MD prescribe opioids?
Yes, Patrick Pfau, MD had 46 opioid claims in 2023 with an opioid prescribing rate of 4.8%.
How many Gastroenterology Physician providers are there in the US?
There are 16,567 Gastroenterology Physician providers across 54 states in the US. The average Gastroenterology Physician provider writes 833 Medicare Part D claims per year.
What drugs does Patrick Pfau, MD prescribe most often?
Based on 2023 Medicare Part D data, Patrick Pfau, MD's most frequently prescribed drugs include Omeprazole, Creon, Famotidine. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Patrick Pfau, MD accept Medicare?
Patrick Pfau, MD appears in CMS Medicare data with 950 Part D claims and 302 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Patrick Pfau, MD's credentials?
Patrick Pfau, MD's NPI is 1346201795 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

Compiled from official public sources by the PlainDoctor editorial team.