NPI registry status
Active
2026 NPPES data Ophthalmic Plastic and Reconstructive Surgery Physician NPI 1831586015 MD
Verify on CMS → Victor Liou, MD
Ophthalmic Plastic and Reconstructive Surgery Physician in San Rafael, 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 303 in Ophthalmic Plastic and Reconstructive 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
548
Medicare Part D claims · 263 beneficiaries · Ophthalmic Plastic and Reconstructive Surgery Physician avg: 642
Generic prescribing
97%
generic claims · 3% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
91.9/100
▲ 8 pts above national avg 83.5 · Exceptional
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
Victor Liou, MD reported a CMS MIPS final score of 91.9/100 - above the 83.5 national average - and filed 548 Medicare Part D claims in 2024.
- 91.9/100
- MIPS score · +8 vs avg
- 548
- Part D claims, 2024
- 97%
- 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.
Federal trust snapshot
What official records show about Victor Liou, MD
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 1831586015), first enumerated 04/24/2015.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 548 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 91.9/100 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.
- Reported
Hospital affiliations
1 CMS Care Compare hospital affiliation on record — practice footprint from the Doctors and Clinicians file.
Source: CMS Care Compare
- State context
State board disciplinary context
California statewide board action statistics are published annually — these figures describe aggregate state activity, not Victor Liou, 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.
Compare Liou with other Ophthalmic Plastic and Reconstructive Surgery Physician providers
Same primary specialty, same federal CMS NPPES roster.
Also enrolled in California
- Dr. Jean-Paul Abboud, M.D., PH.D. Del Mar, CA
- Dr. Mica Bergman, M.D., PH.D. Santa Barbara, CA
- Dr. Brian Chon, MD Walnut Creek, CA
- Dr. Atif Collins, M.D. Fresno, CA
- Dr. Nahia Dib El Jalbout, MD La Jolla, CA
- Dr. Linden Doss, M.D. Los Angeles, CA
Other specialties in San Rafael: Marriage & Family Therapist (342) · Mental Health Counselor (331) · Student in an Organized Health Care Education/Training Program (211) · Addiction (Substance Use Disorder) Counselor (202)
CMS NPPES provider registry desk
NPI 1831586015 · Ophthalmic Plastic and Reconstructive Surgery Physician
NPI-10 · ENUM-MID · TAX-TRACE · MIPS-ABOVE · RX-LIGHT · BOOK-THIN · PHOTO-FINISH
- NPI-10 1831586015
- ENUM-MID 2015
- TAX-TRACE 303
- MIPS-ABOVE 91.9/100
- RX-LIGHT 548
- BOOK-THIN 32 in California
- PHOTO-FINISH Joseph Walrath, M.D. · ±0.0
MIPS final-score neighbourhood
Same-specialty nationwide peers by CMS final score, not geographic proximity
- Liou · this prov…
Liou · this provider
91.9 MIPS pts
- Joseph Walrath, …
Joseph Walrath, M.D.
91.9 MIPS pts
- Jason Sokol, MD …
Jason Sokol, MD
91.9 MIPS pts
- Douglas Marx, MD…
Douglas Marx, MD
92.1 MIPS pts
- Sterling Cannon,…
Sterling Cannon, M.D.
92.6 MIPS pts
What this shows Nearest measured MIPS peers for this NUCC specialty (2023 performance year).
Victor Liou, MD'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.
92 ≥ 61st percentile 61% of 454,083 measured providers are in lower value bands
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 Victor Liou, MD sits
This provider among ophthalmic plastic and reconstructive surgery physician peers
Across the 123 ophthalmic plastic and reconstructive surgery physician providers who report both Medicare Part D prescribing and a MIPS quality score, Victor Liou, MD writes more Part D claims than 52% of them and scores higher on MIPS quality than 60% - placing this provider in the high-volume, high-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Each dot is one ophthalmic plastic and reconstructive surgery physician peer from a representative sample of 60; the gold marker is Victor Liou, MD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Victor Liou, MD 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).
What does the federal data show about Victor Liou, MD?
High performer (top quartile)Primary specialty
Ophthalmic Plastic and Reconstructive Surgery Physician
Medicare Part D claims
548 15% vs specialty avg
MIPS final score
91.9/100 8.4 pts vs avg
Specialty distribution in California
How Ophthalmic Plastic and Reconstructive Surgery Physician compares to other specialties among California providers
Medicare quality performance, MIPS
Victor Liou, MD's 2023 MIPS final score plotted against the Ophthalmic Plastic and Reconstructive Surgery Physician national average
- MIPS Final Score
- 91.9/100
- vs 83.5 national avg · 2023 performance year
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 | 1831586015 |
|---|---|
| Specialty | Ophthalmic Plastic and Reconstructive Surgery Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 04/24/2015 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
91.9066
Final Score
Measured-score avg: 83.5
79.1694
Quality
94.686
Cost
99
Promoting Interoperability
Reporting: Group practice
Hospital and facility affiliations
Facilities where Victor Liou, 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.
Permanente Medical Group Inc
San Rafael, 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 - 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 Victor Liou, MD. To verify Victor Liou, 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.
Brand vs generic prescribing mix · Generic-heavy
Victor Liou, MD - brand share 3.0%
Ophthalmic Plastic and Reconstructive Surgery Physician average
3% brand-name claims vs 97% generic, on 548 2024 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 2024.
548
Total Claims
$10K
Total Drug Cost
263
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 576.667
- Total Day Supply
- 6,156
- Brand vs Generic
- 3% brand / 97% generic
- Brand Drug Cost
- $2K
- Generic Drug Cost
- $8K
- Opioid Claims
- 44 (8.0% rate)
- Antibiotic Claims
- 48
Patient Demographics
- Average Patient Age
- 75.3 years
- Avg HCC Risk Score
- 1.00
- Gender Split
- 64% female / 36% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Victor Liou, MD prescribes most
Top Medicare Part D drugs by claim count, 2024
- Erythromycin
Erythromycin
173 claims
- Methylprednisolone
Methylprednisolone
90 claims
- Alprazolam
Alprazolam
78 claims
- Neomycin-Polymyxin… 39
Neomycin-Polymyxin-Dexameth
39 claims
- Oxycodone Hcl 38
Oxycodone Hcl
38 claims
- Cephalexin 31
Cephalexin
31 claims
- Fluorometholone 13
Fluorometholone
13 claims
| Drug | Claims |
|---|---|
| Erythromycin Erythromycin Base | 173 |
| Methylprednisolone | 90 |
| Alprazolam | 78 |
| Neomycin-Polymyxin-Dexameth Neomycin/Polymyxin B/Dexametha | 39 |
| Oxycodone Hcl | 38 |
| Cephalexin | 31 |
| Fluorometholone | 13 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Ophthalmic Plastic and Reconstructive Surgery Physician in CA →
All providers in California →
Compare specialties →
Ophthalmic Plastic and Reconstructive Surgery Physician Overview
How Victor Liou, MD fits within the Ophthalmic Plastic and Reconstructive Surgery Physician landscape nationally.
303
Ophthalmic Plastic and Reconstructive Surgery Physician Providers in US
44
States with Ophthalmic Plastic and Reconstructive Surgery Physician
642
Avg Claims per Provider
Victor Liou, MD's 548 claims are below the specialty average of 642.
Nationwide Ophthalmic Plastic and Reconstructive Surgery Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Liou, both outside California so the neighborhoods are not geographic containment.
Similar MIPS final score
Nearest same-specialty clinicians by CMS MIPS final score (91.9 here).
Same NPPES enumeration year (2015)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Ophthalmic Plastic and Reconstructive Surgery Physician Providers in California
Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Liou.
One of 32 Ophthalmic Plastic and Reconstructive Surgery Physician providers enrolled in California, 11 are shown on this page.
Frequently Asked Questions
What is Victor Liou, MD's specialty? ▼
Victor Liou, MD specializes in Ophthalmic Plastic and Reconstructive Surgery Physician and practices in San Rafael, California. Credentials: MD.
How much does Victor Liou, MD prescribe under Medicare Part D? ▼
In 2024, Victor Liou, MD wrote 548 Medicare Part D claims totaling $10K in drug costs for 263 beneficiaries.
What is Victor Liou, MD's Medicare quality score? ▼
Victor Liou, MD has a CMS MIPS Final Score of 91.9/100 (Quality: 79.2, Cost: 94.7). 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 Victor Liou, MD located? ▼
Victor Liou, MD is located at 1650 LOS GAMOS DR, San Rafael, CA, 94903. Phone: (415) 492-5400.
What is Victor Liou, MD's NPI number? ▼
Victor Liou, MD's National Provider Identifier (NPI) is 1831586015, issued on 04/24/2015.
Does Victor Liou, MD prescribe more brand-name or generic drugs? ▼
Victor Liou, MD's prescribing is 3% brand-name and 97% generic drugs by claim count, with $2K in brand drug costs.
Does Victor Liou, MD prescribe opioids? ▼
Yes, Victor Liou, MD had 44 opioid claims in 2024 with an opioid prescribing rate of 8.0%.
How many Ophthalmic Plastic and Reconstructive Surgery Physician providers are there in the US? ▼
There are 303 Ophthalmic Plastic and Reconstructive Surgery Physician providers across 44 states in the US. The average Ophthalmic Plastic and Reconstructive Surgery Physician provider writes 642 Medicare Part D claims per year.
What drugs does Victor Liou, MD prescribe most often? ▼
Based on 2024 Medicare Part D data, Victor Liou, MD's most frequently prescribed drugs include Erythromycin, Methylprednisolone, Alprazolam. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Victor Liou, MD accept Medicare? ▼
Victor Liou, MD appears in CMS Medicare data with 548 Part D claims and 263 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Victor Liou, MD's credentials? ▼
Victor Liou, MD's NPI is 1831586015 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.
- 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
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.