2026 NPPES data Cardiovascular Disease Physician NPI 1639157936 M.D.
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PETER FERGUS, M.D.

Cardiovascular Disease Physician in GREEN BAY, 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
5K
Medicare Part D claims · 362 beneficiaries · Cardiovascular Disease Physician avg: 3K
Generic prescribing
90%
generic claims · 10% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
94.6154/100
▲ 12 pts above national avg 83.1 · [object Object]
What the federal data reveals: PETER FERGUS, M.D. is a Cardiovascular Disease Physician ([object Object]) practicing in GREEN BAY, Wisconsin with a Medicare Part D prescribing footprint of 5K claims across 362 beneficiaries — 10% brand-name prescribing . Their CMS MIPS Final Score of 94.6154/100 (national average: 83.1) reflects performance across Quality, Cost, Interoperability, and Improvement Activities .

What stands out: PETER FERGUS, M.D. reported a CMS MIPS final score of 94.6154 out of 100, above the 83.1 national average, and filed 4,696 Medicare Part D claims in 2023. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

PETER FERGUS, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 1 hospital affiliation — signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

PETER FERGUS, M.D. at a glance

High performer (top quartile)

NPI registry status

Active

Issued 01/06/2006

NPI 1639157936

Primary specialty

Cardiovascular Disease Physician

Mid-sized

24,795 US NPIs in this specialty

Medicare Part D claims

4,696 55% vs specialty avg

2023 prescription claims

Specialty avg: 3,033

MIPS final score

94.6154/100 11.5154% pts

Exceptional band

vs 83.1 national avg

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

Medicare quality performance — MIPS

PETER FERGUS, M.D.'s 2023 MIPS final score plotted against the Cardiovascular Disease Physician national average

High performer (top quartile)
MIPS Final Score
94.6154/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Cardiovascular Disease Physician) — 94.6154/100 vs national avg 83.1

0%100%National avg83%94.6%
MIPS final score (Cardiovascular Disease Physician) — 94.6154/100 vs national avg 83.1

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).

PETER FERGUS, M.D. is a Cardiovascular Disease Physician provider practicing in GREEN BAY, Wisconsin, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: M.D.. NPI: 1639157936. This profile includes practice location, specialty classification, and organizational affiliations from the CMS provider registry. Provider information is self-reported to CMS and updated monthly.

PETER FERGUS, M.D. appears in the CMS NPPES registry as a Cardiovascular Disease Physician provider holding M.D. credentials at 1727 SHAWANO AVE, GREEN BAY, WI, 54303, with a listed phone of (920) 272-1050. NPI 1639157936 was issued on 01/06/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what FERGUS 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 4,696 prescription claims written by this provider, covering 362 Medicare beneficiaries and totaling roughly $580K in drug spend, split 10% brand-name and 90% 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. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 94.6154/100 for the 2023 performance year (Quality 85.1795), compared with the national average of 83.1.

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

1727 SHAWANO AVE
GREEN BAY, WI 54303

Provider Details

NPI 1639157936
Specialty Cardiovascular Disease Physician
Credentials M.D.
Gender Male
NPI Issued 01/06/2006

CMS Quality Score (MIPS)

Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.

94.6154
Final Score
Avg: 83.1
85.1795
Quality
100
Promoting Interoperability

Reporting: Alternative Payment Model

Hospital and facility affiliations

Facilities where PETER FERGUS, 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.

ST MARY'S HOSPITAL MEDICAL CENTER OF GREEN BAY INC-HOSPITAL SISTERS
GREEN BAY, 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

PETER FERGUS, M.D. — brand share 10.0%
Specialty average (est.)

10% brand-name claims vs 90% generic, on 4,696 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.

4,696
Total Claims
$580K
Total Drug Cost
362
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
12,832
Total Day Supply
382,066
Brand vs Generic
10% brand / 90% generic
Brand Drug Cost
$465K
Generic Drug Cost
$115K
Antibiotic Claims
19

Patient Demographics

Average Patient Age
79.2 years
Avg HCC Risk Score
1.29
Gender Split
43% female / 57% male

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Ezetimibe
488
Atorvastatin Calcium
331
Metoprolol Succinate
307
Rosuvastatin Calcium
293
Furosemide
238
Potassium Chloride
229
Clopidogrel
Clopidogrel Bisulfate
225
Metoprolol Tartrate
195
Eliquis
Apixaban
158
Digoxin
154

* 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 PETER FERGUS, M.D. 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

PETER FERGUS, M.D.'s 4,696 claims are above 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 FERGUS.

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

Frequently Asked Questions

What is PETER FERGUS, M.D.'s specialty?
PETER FERGUS, M.D. specializes in Cardiovascular Disease Physician and practices in GREEN BAY, Wisconsin. Credentials: M.D..
How much does PETER FERGUS, M.D. prescribe under Medicare Part D?
In 2023, PETER FERGUS, M.D. wrote 4,696 Medicare Part D claims totaling $580K in drug costs for 362 beneficiaries.
What is PETER FERGUS, M.D.'s Medicare quality score?
PETER FERGUS, M.D. has a CMS MIPS Final Score of 94.6154/100 (Quality: 85.1795). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is PETER FERGUS, M.D. located?
PETER FERGUS, M.D. is located at 1727 SHAWANO AVE, GREEN BAY, WI, 54303. Phone: (920) 272-1050.
What is PETER FERGUS, M.D.'s NPI number?
PETER FERGUS, M.D.'s National Provider Identifier (NPI) is 1639157936, issued on 01/06/2006.
Does PETER FERGUS, M.D. prescribe more brand-name or generic drugs?
PETER FERGUS, M.D.'s prescribing is 10% brand-name and 90% generic drugs by claim count, with $465K 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 PETER FERGUS, M.D. prescribe most often?
Based on 2023 Medicare Part D data, PETER FERGUS, M.D.'s most frequently prescribed drugs include Ezetimibe, Atorvastatin Calcium, Metoprolol Succinate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does PETER FERGUS, M.D. accept Medicare?
PETER FERGUS, M.D. appears in CMS Medicare data with 4,696 Part D claims and 362 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify PETER FERGUS, M.D.'s credentials?
PETER FERGUS, M.D.'s NPI is 1639157936 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.
Quality Performance
CMS Merit-based Incentive Payment System (MIPS) — 2023 performance year.
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