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2026 NPPES data Critical Care Medicine (Internal Medicine) Physician NPI 1033223235 M.D.
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Douglas Mazurek, M.D.

Critical Care Medicine (Internal Medicine) Physician in Valparaiso, Indiana.

This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 6,916 in Critical Care Medicine (Internal Medicine) 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
4K
Medicare Part D claims · 332 beneficiaries · Critical Care Medicine (Internal Medicine) Physician avg: 1K
MIPS score
88/100
▲ 4 pts above national avg 83.5 · Above neutral
Industry payments
$494.93
21 payments · CMS Open Payments (Sunshine Act)
Verify NPI on CMS Methodology
Compiled from official public sources by the editorial process.

What the federal data shows

Douglas Mazurek, M.D. reported a CMS MIPS final score of 88/100 - above the 83.5 national average - and filed 4,485 Medicare Part D claims in 2024.

88/100
MIPS score · +4 vs avg
4K
Part D claims, 2024
Likely
board-certified (heuristic)
≥52nd
pct among measured MIPS (lower-bound band)

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.

Federal trust snapshot

What official records show about Douglas Mazurek, M.D.

Federal records show an active NPI with both Medicare prescribing volume and a measured CMS quality score — objective registry data, not patient reviews.

  • Verified

    NPI registry status

    Active listing in the CMS National Provider Identifier Registry (NPI 1033223235), first enumerated 08/18/2006.

    Source: CMS NPPES

  • Reported

    Medicare Part D participation

    Filed 4,485 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.

    Source: CMS Part D Prescriber PUF

  • Reported

    CMS quality reporting (MIPS)

    Reported a CMS MIPS final score of 88/100 in the Quality Payment Program — a federal quality measure, not a patient review.

    Source: CMS Quality Payment Program

  • Reported

    Board certification signal

    Heuristic suggests board-certified status based on ABMS-eligible specialty taxonomy plus active CMS participation signals — not a direct ABMS verification.

    Source: NUCC taxonomy + CMS participation heuristic

  • Reported

    Industry payment transparency

    $494.93 in reported industry payments (21 transfers) in 2024 under the federal Sunshine Act — disclosed transfers of value, not a quality rating.

    Source: CMS Open Payments

  • Not in federal data

    Individual sanction lookup

    PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.

    Source: State medical board / FSMB

This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.

CMS NPPES provider registry desk

NPI 1033223235 · Critical Care Medicine (Internal Medicine) Physician

NPI-10 · ENUM-LEGACY · TAX-MID · MIPS-ABOVE · RX-MID · BOOK-THIN · PHOTO-FINISH

  • NPI-10 1033223235
  • ENUM-LEGACY 2006
  • TAX-MID 7K Critical Care
  • MIPS-ABOVE 88/100
  • RX-MID 4,485
  • BOOK-THIN 139 in Indiana
  • PHOTO-FINISH Jeffrey Fidone, M.D. · ±0.0

MIPS final-score neighbourhood

Same-specialty nationwide peers by CMS final score, not geographic proximity

MIPS pts

What this shows Nearest measured MIPS peers for this NUCC specialty (2023 performance year).

Source CMS Quality Payment Program (MIPS) As of 2023

Douglas Mazurek, M.D.'s MIPS score vs every measured U.S. clinician

CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure. Clinicians whose score CMS assigned without scoring any category are excluded.

88 ≥ 52nd percentile 52% of 454,083 measured providers are in lower value bands

0–10: 8,684 measured providers (2%). Below this entry. 10–20: 3,008 measured providers (1%). Below this entry. 20–30: 3,069 measured providers (1%). Below this entry. 30–40: 2,746 measured providers (1%). Below this entry. 40–50: 2,928 measured providers (1%). Below this entry. 50–60: 5,882 measured providers (1%). Below this entry. 60–70: 13,906 measured providers (3%). Below this entry. 70–80: 94,570 measured providers (21%). Below this entry. 80–90: 129,887 measured providers (29%). This entry sits in this band. 90+: 189,403 measured providers (42%). Above this entry. This provider 0 100 every measured MIPS clinician, bucketed by value

Each bar is a band; taller bars hold more measured providers. 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.

The percentile is a conservative whole-score-point band: it counts only measured clinicians in lower score bands. A CMS MIPS metric is not a recommendation or a clinical-quality rating by PlainDoctor. See methodology § corpus placement.

Source CMS Merit-based Incentive Payment System (MIPS) · 2023

Where Douglas Mazurek, M.D. sits

This provider among critical care medicine (internal medicine) physician peers

Across the 1,548 critical care medicine (internal medicine) physician providers who report both Medicare Part D prescribing and a MIPS quality score, Douglas Mazurek, M.D. writes more Part D claims than 97% of them and scores higher on MIPS quality than 51% - placing this provider in the high-volume, high-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.

Lower volume · High qualityHigh volume · High qualityLower volume · Lower qualityHigh volume · Lower quality0255075100024.448.873.297.7Part D claim volume, percentile in specialtyMIPS quality, percentilePoint, Part D claim volume, percentile in specialty: 68 · MIPS quality, percentile: 35Point, Part D claim volume, percentile in specialty: 52 · MIPS quality, percentile: 63Point, Part D claim volume, percentile in specialty: 28 · MIPS quality, percentile: 43Point, Part D claim volume, percentile in specialty: 67 · MIPS quality, percentile: 85Point, Part D claim volume, percentile in specialty: 22 · MIPS quality, percentile: 23Point, Part D claim volume, percentile in specialty: 50 · MIPS quality, percentile: 58Point, Part D claim volume, percentile in specialty: 37 · MIPS quality, percentile: 2Point, Part D claim volume, percentile in specialty: 70 · MIPS quality, percentile: 90Point, Part D claim volume, percentile in specialty: 100 · MIPS quality, percentile: 62Point, Part D claim volume, percentile in specialty: 72 · MIPS quality, percentile: 68Point, Part D claim volume, percentile in specialty: 58 · MIPS quality, percentile: 85Point, Part D claim volume, percentile in specialty: 82 · MIPS quality, percentile: 65Point, Part D claim volume, percentile in specialty: 80 · MIPS quality, percentile: 57Point, Part D claim volume, percentile in specialty: 32 · MIPS quality, percentile: 28Point, Part D claim volume, percentile in specialty: 45 · MIPS quality, percentile: 45Point, Part D claim volume, percentile in specialty: 78 · MIPS quality, percentile: 33Point, Part D claim volume, percentile in specialty: 42 · MIPS quality, percentile: 12Point, Part D claim volume, percentile in specialty: 15 · MIPS quality, percentile: 13Point, Part D claim volume, percentile in specialty: 12 · MIPS quality, percentile: 93Point, Part D claim volume, percentile in specialty: 8 · MIPS quality, percentile: 17Point, Part D claim volume, percentile in specialty: 17 · MIPS quality, percentile: 52Point, Part D claim volume, percentile in specialty: 48 · MIPS quality, percentile: 72Point, Part D claim volume, percentile in specialty: 38 · MIPS quality, percentile: 78Point, Part D claim volume, percentile in specialty: 0 · MIPS quality, percentile: 53Point, Part D claim volume, percentile in specialty: 88 · MIPS quality, percentile: 55Point, Part D claim volume, percentile in specialty: 57 · MIPS quality, percentile: 50Point, Part D claim volume, percentile in specialty: 98 · MIPS quality, percentile: 0Point, Part D claim volume, percentile in specialty: 60 · MIPS quality, percentile: 83Point, Part D claim volume, percentile in specialty: 30 · MIPS quality, percentile: 3Point, Part D claim volume, percentile in specialty: 77 · MIPS quality, percentile: 73Point, Part D claim volume, percentile in specialty: 97 · MIPS quality, percentile: 75Point, Part D claim volume, percentile in specialty: 2 · MIPS quality, percentile: 70Point, Part D claim volume, percentile in specialty: 87 · MIPS quality, percentile: 7Point, Part D claim volume, percentile in specialty: 63 · MIPS quality, percentile: 90Point, Part D claim volume, percentile in specialty: 20 · MIPS quality, percentile: 30Point, Part D claim volume, percentile in specialty: 83 · MIPS quality, percentile: 27Point, Part D claim volume, percentile in specialty: 53 · MIPS quality, percentile: 48Point, Part D claim volume, percentile in specialty: 47 · MIPS quality, percentile: 32Point, Part D claim volume, percentile in specialty: 62 · MIPS quality, percentile: 93Point, Part D claim volume, percentile in specialty: 95 · MIPS quality, percentile: 93Point, Part D claim volume, percentile in specialty: 35 · MIPS quality, percentile: 85Point, Part D claim volume, percentile in specialty: 43 · MIPS quality, percentile: 40Point, Part D claim volume, percentile in specialty: 13 · MIPS quality, percentile: 10Point, Part D claim volume, percentile in specialty: 23 · MIPS quality, percentile: 15Point, Part D claim volume, percentile in specialty: 5 · MIPS quality, percentile: 93Point, Part D claim volume, percentile in specialty: 73 · MIPS quality, percentile: 20Point, Part D claim volume, percentile in specialty: 3 · MIPS quality, percentile: 37Point, Part D claim volume, percentile in specialty: 10 · MIPS quality, percentile: 42Point, Part D claim volume, percentile in specialty: 40 · MIPS quality, percentile: 18Point, Part D claim volume, percentile in specialty: 7 · MIPS quality, percentile: 37Point, Part D claim volume, percentile in specialty: 27 · MIPS quality, percentile: 22Point, Part D claim volume, percentile in specialty: 18 · MIPS quality, percentile: 8Point, Part D claim volume, percentile in specialty: 33 · MIPS quality, percentile: 93Point, Part D claim volume, percentile in specialty: 65 · MIPS quality, percentile: 82Point, Part D claim volume, percentile in specialty: 25 · MIPS quality, percentile: 80Point, Part D claim volume, percentile in specialty: 92 · MIPS quality, percentile: 47Point, Part D claim volume, percentile in specialty: 90 · MIPS quality, percentile: 67Point, Part D claim volume, percentile in specialty: 55 · MIPS quality, percentile: 77Point, Part D claim volume, percentile in specialty: 85 · MIPS quality, percentile: 25Point, Part D claim volume, percentile in specialty: 75 · MIPS quality, percentile: 5Douglas Mazurek, M.D., Part D claim volume, percentile in specialty: 97 · MIPS quality, percentile: 51
Part D claim volume vs MIPS quality, by specialty percentile

Each dot is one critical care medicine (internal medicine) physician peer from a representative sample of 60; the gold marker is Douglas Mazurek, M.D.. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.

✓
Board certification likely (heuristic, not verified)

Douglas Mazurek, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting - 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 Douglas Mazurek, M.D.?

High performer (top quartile)

NPI registry status

Active

Issued 08/18/2006

NPI 1033223235

Primary specialty

Critical Care Medicine (Internal Medicine) Physician

Mid-sized

6,916 US NPIs in this specialty

Medicare Part D claims

4,485 307% vs specialty avg

2024 prescription claims

Specialty avg: 1,103

MIPS final score

88/100 4.5 pts vs avg

Above neutral band

vs 83.5 national avg

Specialty distribution in Indiana

How Critical Care Medicine (Internal Medicine) Physician compares to other specialties among Indiana providers

Indiana providers
Behavior Technician14.3%Student in an Organized Heal…4.8%Pharmacist4.3%Clinical Social Worker4.2%Family Nurse Practitioner4.2%Mental Health Counselor4.1%Critical Care Medicine (Inte…0.1%
Largest specialties in Indiana (% of in-state providers)

Medicare quality performance, MIPS

Douglas Mazurek, M.D.'s 2023 MIPS final score plotted against the Critical Care Medicine (Internal Medicine) Physician national average

High performer (top quartile)
MIPS Final Score
88/100
vs 83.5 national avg · 2023 performance year
0%100%National avg84%88%
MIPS final score (Critical Care Medicine (Internal Medicine) Physician) - 88/100 vs national avg 83.5
How MIPS and board certification work

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).

Practice Address

1101 GLENDALE BLVD
Valparaiso, IN 46383
(219) 464-9054

Provider Details

NPI 1033223235
Specialty Critical Care Medicine (Internal Medicine) Physician
Credentials M.D.
Gender Male
NPI Issued 08/18/2006

CMS Quality Score (MIPS)

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

87.9565
Final Score
Measured-score avg: 83.5
74.048
Quality
100
Promoting Interoperability

Reporting: Alternative Payment Model

Industry payments received (2024) - CMS Open Payments transparency data

The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for Douglas Mazurek, M.D.. Source: openpaymentsdata.cms.gov.

Total received

$495

Largest payer

GENZYME CORPORATION

Most common payment type

Food and Beverage

Industry payments are not necessarily indicators of bias, they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2024.

4,485
Total Claims
$980K
Total Drug Cost
332
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
5,594.233
Total Day Supply
127,075
Generic Drug Cost
$116K
Opioid Claims
175 (3.9% rate)
Antibiotic Claims
489

Patient Demographics

Average Patient Age
72.4 years
Avg HCC Risk Score
2.10
Gender Split
57% female / 43% male
Age Distribution
<65: 46, 65-74: 137, 75-84: 124, 85+: 25

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.

What Douglas Mazurek, M.D. prescribes most

Top Medicare Part D drugs by claim count, 2024

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2024
Drug Claims
Prednisone
 350
Albuterol Sulfate Hfa
Albuterol Sulfate
291
Trelegy Ellipta
Fluticasone/Umeclidin/Vilanter
254
Doxycycline Hyclate
 177
Hydrocodone-Acetaminophen
Hydrocodone/Acetaminophen
173
Montelukast Sodium
 135
Atorvastatin Calcium
 128
Ipratropium-Albuterol
Ipratropium/Albuterol Sulfate
125
Famotidine
 113
Gabapentin
 109

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

More Critical Care Medicine (Internal Medicine) Physician in IN → All providers in Indiana → Compare specialties →

Critical Care Medicine (Internal Medicine) Physician Overview

How Douglas Mazurek, M.D. fits within the Critical Care Medicine (Internal Medicine) Physician landscape nationally.

6,916
Critical Care Medicine (Internal Medicine) Physician Providers in US
53
States with Critical Care Medicine (Internal Medicine) Physician
1,103
Avg Claims per Provider

Douglas Mazurek, M.D.'s 4,485 claims are above the specialty average of 1,103.

Nationwide Critical Care Medicine (Internal Medicine) Physician peers with similar MIPS or enrollment year

Two federal-record peer sets for Mazurek, both outside Indiana so the neighborhoods are not geographic containment.

Similar MIPS final score

Nearest same-specialty clinicians by CMS MIPS final score (88 here).

Jeffrey Fidone 88 TX Irtaza Khan 88 IL Mohammed Shaikh 88 CA Michael Agustin 88.1 GU

Same NPPES enumeration year (2006)

Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.

Douglas Schwartz Albany, NY Jeffrey Wilt Kalamazoo, MI James Finley Cleveland, OH Jamil Abbasi Tyler, TX

Nearby Critical Care Medicine (Internal Medicine) Physician Providers in Indiana

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

One of 139 Critical Care Medicine (Internal Medicine) Physician providers enrolled in Indiana, 5 are shown here.

Dr. Ibrahim Abou Daya
MD
Fort Wayne, IN
Dr. Salim Abou Jaoude
MD
Lafayette, IN
Dr. Yaser Abu El-Sameed
M.D.
Bloomington, IN
Dr. Sami Abuqayyas
M.D.
Danville, IN
Dr. Armais Akovbyan
MD, DO
Fort Wayne, IN

Compare Critical Care Medicine (Internal Medicine) Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is Douglas Mazurek, M.D.'s specialty? ▼
Douglas Mazurek, M.D. specializes in Critical Care Medicine (Internal Medicine) Physician and practices in Valparaiso, Indiana. Credentials: M.D..
How much does Douglas Mazurek, M.D. prescribe under Medicare Part D? ▼
In 2024, Douglas Mazurek, M.D. wrote 4,485 Medicare Part D claims totaling $980K in drug costs for 332 beneficiaries.
What is Douglas Mazurek, M.D.'s Medicare quality score? ▼
Douglas Mazurek, M.D. has a CMS MIPS Final Score of 88/100 (Quality: 74). The average MIPS Final Score across the 454,083 clinicians with at least one published category score is 83.5; clinicians whose score CMS assigned without scoring any category are excluded from that average. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Douglas Mazurek, M.D. located? ▼
Douglas Mazurek, M.D. is located at 1101 GLENDALE BLVD, Valparaiso, IN, 46383. Phone: (219) 464-9054.
What is Douglas Mazurek, M.D.'s NPI number? ▼
Douglas Mazurek, M.D.'s National Provider Identifier (NPI) is 1033223235, issued on 08/18/2006.
Does Douglas Mazurek, M.D. prescribe opioids? ▼
Yes, Douglas Mazurek, M.D. had 175 opioid claims in 2024 with an opioid prescribing rate of 3.9%.
How many Critical Care Medicine (Internal Medicine) Physician providers are there in the US? ▼
There are 6,916 Critical Care Medicine (Internal Medicine) Physician providers across 53 states in the US. The average Critical Care Medicine (Internal Medicine) Physician provider writes 1,103 Medicare Part D claims per year.
What drugs does Douglas Mazurek, M.D. prescribe most often? ▼
Based on 2024 Medicare Part D data, Douglas Mazurek, M.D.'s most frequently prescribed drugs include Prednisone, Albuterol Sulfate Hfa, Trelegy Ellipta. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Douglas Mazurek, M.D. accept Medicare? ▼
Douglas Mazurek, M.D. appears in CMS Medicare data with 4,485 Part D claims and 332 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Douglas Mazurek, M.D.'s credentials? ▼
Douglas Mazurek, M.D.'s NPI is 1033223235 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

View source datasets and methodology notes
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 (2024). 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 August 2026 (NPPES) / 2024 (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 editorial process.

Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of August 2026.