NPI registry status
Active
2026 NPPES data Ophthalmology Physician NPI 1487813622 MD
Verify on CMS → Yao Liu, MD
Ophthalmology Physician in Madison, Wisconsin.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 22,082 in Ophthalmology 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
2K
Medicare Part D claims · 445 beneficiaries · Ophthalmology Physician avg: 1K
Generic prescribing
67%
generic claims · 33% brand-name · higher generic rates reduce patient out-of-pocket costs
Source: CMS Medicare Part D Prescriber Public Use File, 2023
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Yao Liu, MD filed 2,175 Medicare Part D claims in 2023 as a Ophthalmology Physician in Madison, Wisconsin, prescribing 67% generic.
- 2K
- Part D claims, 2023
- 67%
- 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.
Yao Liu, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
2,175 Top 15% higher than 85% of 1,370,886 prescribers
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.
Source CMS Medicare Part D Prescriber Public Use File · 2023
✓
Board certification likely (heuristic, not verified)
Yao Liu, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 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 Yao Liu, MD?
Quality data not reportedPrimary specialty
Ophthalmology Physician
Medicare Part D claims
2,175 53% vs specialty avg
Specialty distribution in Wisconsin
How Ophthalmology Physician compares to other specialties among Wisconsin 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 Ophthalmology 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).
Yao Liu, MD appears in the CMS NPPES registry as an Ophthalmology Physician provider holding MD credentials at 2880 UNIVERSITY AVE, Madison, WI, 53705, with a listed phone of (608) 263-7171. NPI 1487813622 was issued on 06/03/2008.
Medicare Part D records for calendar year 2023 show 2,175 prescription claims written by this provider, covering 445 Medicare beneficiaries and totaling roughly $249K in drug spend, split 33% brand-name and 67% generic by claim count.
Ophthalmology Physician is a mid-sized specialty nationwide, with 22,082 enrolled providers across 56 states and an average of 1,420 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
Provider Details
| NPI | 1487813622 |
|---|---|
| Specialty | Ophthalmology Physician |
| Credentials | MD |
| Gender | Female |
| NPI Issued | 06/03/2008 |
Hospital and facility affiliations
Facilities where Yao Liu, 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.
University OF Wisconsin Medical Foundation Inc
Mauston, 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 · Above average
Yao Liu, MD - brand share 33.0%
Ophthalmology Physician average
33% brand-name claims vs 67% generic, on 2,175 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.
2,175
Total Claims
$249K
Total Drug Cost
445
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 4,375
- Total Day Supply
- 127,924
- Brand vs Generic
- 33% brand / 67% generic
- Brand Drug Cost
- $170K
- Generic Drug Cost
- $79K
Patient Demographics
- Average Patient Age
- 75.3 years
- Avg HCC Risk Score
- 1.12
- Gender Split
- 55% female / 45% male
- Age Distribution
- <65: 35, 65-74: 177, 75-84: 154, 85+: 79
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Yao Liu, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Latanoprost
Latanoprost
516 claims
- Dorzolamide-Timolol
Dorzolamide-Timolol
291 claims
- Brimonidine Tartrate
Brimonidine Tartrate
254 claims
- Timolol Maleate
Timolol Maleate
219 claims
- Dorzolamide Hcl 163
Dorzolamide Hcl
163 claims
- Lumigan 87
Lumigan
87 claims
- Travoprost 74
Travoprost
74 claims
- Rhopressa 58
Rhopressa
58 claims
| Drug | Claims |
|---|---|
| Latanoprost | 516 |
| Dorzolamide-Timolol Dorzolamide Hcl/Timolol Maleat | 291 |
| Brimonidine Tartrate | 254 |
| Timolol Maleate | 219 |
| Dorzolamide Hcl | 163 |
| Lumigan Bimatoprost | 87 |
| Travoprost | 74 |
| Rhopressa Netarsudil Mesylate | 58 |
| Pilocarpine Hcl | 48 |
| Prednisolone Acetate | 46 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Ophthalmology Physician Overview
How Yao Liu, MD fits within the Ophthalmology Physician landscape nationally.
22,082
Ophthalmology Physician Providers in US
56
States with Ophthalmology Physician
1,420
Avg Claims per Provider
Yao Liu, MD's 2,175 claims are above the specialty average of 1,420.
Nearby Ophthalmology Physician Providers in Wisconsin
Other clinicians with the same primary specialty enrolled in Wisconsin, drawn from the same CMS NPPES roster as Liu.
Dr. Nausheen Abbas
M.D.
West Bend, WI
Dr. Omar Abdelmegid
MD
Beaver Dam, WI
Dr. Jacob Abou-Hanna
MD
Madison, WI
Dr. Julia Agapov
DO
Madison, WI
Dr. Swati Agarwal-Sinha
MD
Green Bay, WI
Compare Ophthalmology Physician nationally: see state-by-state distribution →
Before you book an appointment
Use this federal record as your verification checklist, not as a recommendation.
- Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
- Check the active license and any disciplinary history with the Wisconsin medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Ophthalmology Physician peer on Medicare volume and prescribing patterns. Compare providers
Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.
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Frequently Asked Questions
What is Yao Liu, MD's specialty? ▼
Yao Liu, MD specializes in Ophthalmology Physician and practices in Madison, Wisconsin. Credentials: MD.
How much does Yao Liu, MD prescribe under Medicare Part D? ▼
In 2023, Yao Liu, MD wrote 2,175 Medicare Part D claims totaling $249K in drug costs for 445 beneficiaries.
Where is Yao Liu, MD located? ▼
Yao Liu, MD is located at 2880 UNIVERSITY AVE, Madison, WI, 53705. Phone: (608) 263-7171.
What is Yao Liu, MD's NPI number? ▼
Yao Liu, MD's National Provider Identifier (NPI) is 1487813622, issued on 06/03/2008.
Does Yao Liu, MD prescribe more brand-name or generic drugs? ▼
Yao Liu, MD's prescribing is 33% brand-name and 67% generic drugs by claim count, with $170K in brand drug costs.
How many Ophthalmology Physician providers are there in the US? ▼
There are 22,082 Ophthalmology Physician providers across 56 states in the US. The average Ophthalmology Physician provider writes 1,420 Medicare Part D claims per year.
What drugs does Yao Liu, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Yao Liu, MD's most frequently prescribed drugs include Latanoprost, Dorzolamide-Timolol, Brimonidine Tartrate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Yao Liu, MD accept Medicare? ▼
Yao Liu, MD appears in CMS Medicare data with 2,175 Part D claims and 445 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Yao Liu, MD's credentials? ▼
Yao Liu, MD's NPI is 1487813622 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 (2023). 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 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
Compiled from official public sources by the PlainDoctor editorial team.
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 May 2026.