NPI registry status
Active
2026 NPPES data Vascular Surgery Physician NPI 1740864792 MD
Verify on CMS → Iris Liu, MD
Vascular Surgery Physician in San Francisco, California.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 4,362 in 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.
Industry payments
$190.78
2 payments · CMS Open Payments (Sunshine Act)
What the federal data shows
Iris Liu, MD is a Vascular Surgery Physician in San Francisco, California, listed in the federal CMS National Provider Identifier registry.
- $190.78
- industry payments (Sunshine Act)
- #139
- Vascular Surgery Physician rank among California specialties
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 Iris Liu, MD
Active federal NPI registry listing — verify license, disciplinary history, and board certification with official sources before relying on this profile.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1740864792), first enumerated 05/06/2021.
Source: CMS NPPES
- Not in federal data
Medicare Part D participation
No 2023 Medicare Part D prescribing volume appears in the CMS public file for this NPI (may reflect specialty, new enrollment, or non-prescribing role).
Source: CMS Part D Prescriber PUF
- Reported
Board certification signal
Practices in an ABMS-board-eligible specialty; board certification not confirmed in federal records.
- Reported
Industry payment transparency
$190.78 in reported industry payments (2 transfers) in 2024 under the federal Sunshine Act — disclosed transfers of value, not a quality rating.
Source: CMS Open Payments
- State context
State board disciplinary context
California statewide board action statistics are published annually — these figures describe aggregate state activity, not Iris Liu, MD's individual license status. Verify directly with the state medical board.
Source: MBC 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 1740864792 · Vascular Surgery Physician
NPI-10 · ENUM-RECENT · TAX-NARROW · RX-NONE · BOOK-THIN · PHOTO-ENUM
- NPI-10 1740864792
- ENUM-RECENT 2021
- TAX-NARROW 4,362
- RX-NONE No Part D
- BOOK-THIN 463 in California
- PHOTO-ENUM Joseph Yoo · 2021
◑
Board-eligible specialty (heuristic, not verified)
Iris Liu, MD practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Iris Liu, MD?
Quality data not reportedPrimary specialty
Vascular Surgery Physician
Specialty distribution in California
How Vascular Surgery Physician compares to other specialties among California 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 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 | 1740864792 |
|---|---|
| Specialty | Vascular Surgery Physician |
| Credentials | MD |
| Gender | Female |
| NPI Issued | 05/06/2021 |
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 Iris Liu, MD. Source: openpaymentsdata.cms.gov.
Total received
$191
Largest payer
Medtronic, Inc.
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.
License & disciplinary context - California MBC 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 ~150K California medical licensees in 2023 - they are NOT specific to Iris Liu, MD. To verify Iris Liu, MD's current license status, search the MBC public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
576
Total board actions, California 2023
Across 556 cases
3.84
Actions per 1,000 licensees
California statewide rate
probation
Most common action type
186 cases
MBC 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 California disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Vascular Surgery Physician Overview
How Iris Liu, MD fits within the Vascular Surgery Physician landscape nationally.
4,362
Vascular Surgery Physician Providers in US
53
States with Vascular Surgery Physician
211
Avg Claims per Provider
Nationwide Vascular Surgery Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Liu, both outside California so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2021)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Vascular Surgery Physician Providers in California
Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Liu.
One of 463 Vascular Surgery Physician providers enrolled in California, 5 are shown here.
Dr. Arad Abadi
MD
Lancaster, CA
Dr. Andrew Abi-Chaker
M.D.
Sherman Oaks, CA
Dr. Ahmed Abou-Zamzam
M.D.
Loma Linda, CA
Dr. Joseph Abu-Dalu
MD
Los Angeles, CA
Dr. Queen Abure
MD
San Francisco, CA
Compare Vascular Surgery Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Iris Liu, MD's specialty? ▼
Iris Liu, MD specializes in Vascular Surgery Physician and practices in San Francisco, California. Credentials: MD.
Where is Iris Liu, MD located? ▼
Iris Liu, MD is located at 513 PARNASSUS AVE # S321, San Francisco, CA, 94143. Phone: (408) 921-6397.
What is Iris Liu, MD's NPI number? ▼
Iris Liu, MD's National Provider Identifier (NPI) is 1740864792, issued on 05/06/2021.
How many Vascular Surgery Physician providers are there in the US? ▼
There are 4,362 Vascular Surgery Physician providers across 53 states in the US. The average Vascular Surgery Physician provider writes 211 Medicare Part D claims per year.
Does Iris Liu, MD accept Medicare? ▼
Iris Liu, MD appears in CMS Medicare data. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Iris Liu, MD's credentials? ▼
Iris Liu, MD's NPI is 1740864792 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.
- 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.