NPI registry status
Active
2026 NPPES data Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician NPI 1619189933 MD
Verify on CMS → Matheau Julien, MD
Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician in Round Rock, Texas.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 5,174 in Thoracic Surgery (Cardiothoracic Vascular 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
17
Medicare Part D claims · Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician avg: 119
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
Matheau Julien, MD filed 17 Medicare Part D claims in 2024 as a Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician in Round Rock, Texas.
- 17
- Part D claims, 2024
- Likely
- board-certified (heuristic)
- ≥0th
- pct by Part D claim volume (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 Matheau Julien, MD
Federal records show an active NPI with Medicare Part D prescribing activity — verifiable registry data, not a proprietary rating.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1619189933), first enumerated 05/07/2007.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 17 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- 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.
- Reported
Hospital affiliations
6 CMS Care Compare hospital affiliations on record — practice footprint from the Doctors and Clinicians file.
Source: CMS Care Compare
- State context
State board disciplinary context
Texas statewide board action statistics are published annually — these figures describe aggregate state activity, not Matheau Julien, MD's individual license status. Verify directly with the state medical board.
Source: TMB annual report 2023
- 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 1619189933 · Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician
NPI-10 · ENUM-MID · TAX-MID · RX-TRACE · BOOK-THIN · PHOTO-ENUM
- NPI-10 1619189933
- ENUM-MID 2007
- TAX-MID 5K Thoracic Surgery
- RX-TRACE 17
- BOOK-THIN 371 in Texas
- PHOTO-ENUM Robert Ferguson · 2007
Matheau Julien, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
17 ≥ 0th percentile 0% of 1,416,883 prescribers are in lower value bands
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.
The percentile is a conservative 100-claim band: it counts only prescribers in lower claim-volume bands. Medicare Part D claim volume is activity context, not a quality measure or recommendation. See methodology § corpus placement.
Source CMS Medicare Part D Prescriber Public Use File · 2024
✓
Board certification likely (heuristic, not verified)
Matheau Julien, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 6 hospital affiliations - 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 Matheau Julien, MD?
Quality data not reportedPrimary specialty
Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician
Medicare Part D claims
17 86% vs specialty avg
Specialty distribution in Texas
How Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician compares to other specialties among Texas 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 Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician. Verify directly:
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
Provider Details
| NPI | 1619189933 |
|---|---|
| Specialty | Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 05/07/2007 |
Hospital and facility affiliations
Facilities where Matheau Julien, 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.
According to CMS billing records, Matheau Julien, MD is affiliated with 6 Medicare-billing facilities across 5 states, 1 of which carry a CMS Hospital overall star rating.
Winchester Medical Center
★★★★☆ 4/5
Winchester, VA
Acute Care Hospitals
CMS CCN: 490005
Beaumont Medical Group- Specialty Services
Dearborn, MI
Carle Health Care Incorporated
Urbana, IL
Riverside Physician Services Inc
Newport News, VA
Shawnee Mission Medical Center Inc
Merriam, KS
Synergy CT Surgery Partnership
Upland, CA
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
License & disciplinary context - Texas TMB 2023 annual report
Aggregate state board data only, NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~77K Texas medical licensees in 2023 - they are NOT specific to Matheau Julien, MD. To verify Matheau Julien, MD's current license status, search the TMB public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
344
Total board actions, Texas 2023
Across 334 cases
4.47
Actions per 1,000 licensees
Texas statewide rate
probation
Most common action type
94 cases
TMB publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the Texas disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2024.
17
Total Claims
$143
Total Drug Cost
N/A
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 23
- Total Day Supply
- 690
- Brand Drug Cost
- $0
- Generic Drug Cost
- $143
Patient Demographics
- Average Patient Age
- 75.0 years
- Avg HCC Risk Score
- 1.34
More Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician in TX →
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Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician Overview
How Matheau Julien, MD fits within the Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician landscape nationally.
5,174
Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician Providers in US
52
States with Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician
119
Avg Claims per Provider
Matheau Julien, MD's 17 claims are below the specialty average of 119.
Nationwide Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Julien, both outside Texas so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2007)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician Providers in Texas
Other clinicians with the same primary specialty enrolled in Texas, drawn from the same CMS NPPES roster as Julien.
One of 371 Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician providers enrolled in Texas, 5 are shown here.
Frequently Asked Questions
What is Matheau Julien, MD's specialty? ▼
Matheau Julien, MD specializes in Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician and practices in Round Rock, Texas. Credentials: MD.
How much does Matheau Julien, MD prescribe under Medicare Part D? ▼
In 2024, Matheau Julien, MD wrote 17 Medicare Part D claims totaling $143 in drug costs for N/A beneficiaries.
Where is Matheau Julien, MD located? ▼
Matheau Julien, MD is located at 300 UNIVERSITY BLVD, Round Rock, TX, 78665. Phone: (515) 509-0100.
What is Matheau Julien, MD's NPI number? ▼
Matheau Julien, MD's National Provider Identifier (NPI) is 1619189933, issued on 05/07/2007.
How many Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician providers are there in the US? ▼
There are 5,174 Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician providers across 52 states in the US. The average Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician provider writes 119 Medicare Part D claims per year.
Does Matheau Julien, MD accept Medicare? ▼
Matheau Julien, MD appears in CMS Medicare data with 17 Part D claims and N/A Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Matheau Julien, MD's credentials? ▼
Matheau Julien, MD's NPI is 1619189933 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
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.
- 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
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.