NPI registry status
Active
2026 NPPES data Ophthalmology Physician NPI 1750375580 D.O.
Verify on CMS → Da-Thuy Van, D.O.
Ophthalmology Physician in Galveston, 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 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
1K
Medicare Part D claims · 580 beneficiaries · Ophthalmology Physician avg: 1K
Generic prescribing
76%
generic claims · 24% 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
Da-Thuy Van, D.O. filed 1,478 Medicare Part D claims in 2023 as a Ophthalmology Physician in Galveston, Texas, prescribing 76% generic.
- 1K
- Part D claims, 2023
- 76%
- 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.
Da-Thuy Van, D.O.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
1,478 Top 20% higher than 80% 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)
Da-Thuy Van, D.O. 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 Da-Thuy Van, D.O.?
Quality data not reportedPrimary specialty
Ophthalmology Physician
Medicare Part D claims
1,478 4% vs specialty avg
Specialty distribution in Texas
How Ophthalmology 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 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).
Da-Thuy Van, D.O. appears in the CMS NPPES registry as an Ophthalmology Physician provider holding D.O. credentials at 2302 AVENUE P, Galveston, TX, 77550, with a listed phone of (409) 765-6324. NPI 1750375580 was issued on 09/08/2005.
Medicare Part D records for calendar year 2023 show 1,478 prescription claims written by this provider, covering 580 Medicare beneficiaries and totaling roughly $83K in drug spend, split 24% brand-name and 76% 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 | 1750375580 |
|---|---|
| Specialty | Ophthalmology Physician |
| Credentials | D.O. |
| Gender | Female |
| NPI Issued | 09/08/2005 |
Hospital and facility affiliations
Facilities where Da-Thuy Van, D.O. 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
Vallejo, 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 Da-Thuy Van, D.O.. To verify Da-Thuy Van, D.O.'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.
Brand vs generic prescribing mix · Typical
Da-Thuy Van, D.O. - brand share 24.0%
Ophthalmology Physician average
24% brand-name claims vs 76% generic, on 1,478 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.
1,478
Total Claims
$83K
Total Drug Cost
580
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 3,134
- Total Day Supply
- 89,701
- Brand vs Generic
- 24% brand / 76% generic
- Brand Drug Cost
- $55K
- Generic Drug Cost
- $28K
Patient Demographics
- Average Patient Age
- 75.9 years
- Avg HCC Risk Score
- 1.52
- Gender Split
- 62% female / 38% male
- Age Distribution
- <65: 30, 65-74: 233, 75-84: 220, 85+: 97
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Da-Thuy Van, D.O. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Latanoprost
Latanoprost
461 claims
- Dorzolamide-Timolol
Dorzolamide-Timolol
190 claims
- Prednisolone Acetate 150
Prednisolone Acetate
150 claims
- Timolol Maleate 115
Timolol Maleate
115 claims
- Brimonidine Tartrate 101
Brimonidine Tartrate
101 claims
- Diclofenac Sodium 80
Diclofenac Sodium
80 claims
- Neomycin-Polymyxin… 61
Neomycin-Polymyxin-Dexameth
61 claims
- Cyclosporine 47
Cyclosporine
47 claims
| Drug | Claims |
|---|---|
| Latanoprost | 461 |
| Dorzolamide-Timolol Dorzolamide Hcl/Timolol Maleat | 190 |
| Prednisolone Acetate | 150 |
| Timolol Maleate | 115 |
| Brimonidine Tartrate | 101 |
| Diclofenac Sodium | 80 |
| Neomycin-Polymyxin-Dexameth Neomycin/Polymyxin B/Dexametha | 61 |
| Cyclosporine | 47 |
| Moxifloxacin Moxifloxacin Hcl | 23 |
| Dorzolamide Hcl | 21 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Ophthalmology Physician Overview
How Da-Thuy Van, D.O. 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
Da-Thuy Van, D.O.'s 1,478 claims are above the specialty average of 1,420.
Nearby Ophthalmology Physician Providers in Texas
Other clinicians with the same primary specialty enrolled in Texas, drawn from the same CMS NPPES roster as Van.
Dr. Justin Aaker
MD
Georgetown, TX
Dr. Asad Abbas
M.D.
Baytown, TX
Dr. Ashkan Abbey
M.D.
Dallas, TX
Dr. Meredith Abbott
MD
Dallas, TX
Dr. Musa Abdelaziz
MD
Southlake, TX
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 Texas 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 Da-Thuy Van, D.O.'s specialty? ▼
Da-Thuy Van, D.O. specializes in Ophthalmology Physician and practices in Galveston, Texas. Credentials: D.O..
How much does Da-Thuy Van, D.O. prescribe under Medicare Part D? ▼
In 2023, Da-Thuy Van, D.O. wrote 1,478 Medicare Part D claims totaling $83K in drug costs for 580 beneficiaries.
Where is Da-Thuy Van, D.O. located? ▼
Da-Thuy Van, D.O. is located at 2302 AVENUE P, Galveston, TX, 77550. Phone: (409) 765-6324.
What is Da-Thuy Van, D.O.'s NPI number? ▼
Da-Thuy Van, D.O.'s National Provider Identifier (NPI) is 1750375580, issued on 09/08/2005.
Does Da-Thuy Van, D.O. prescribe more brand-name or generic drugs? ▼
Da-Thuy Van, D.O.'s prescribing is 24% brand-name and 76% generic drugs by claim count, with $55K 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 Da-Thuy Van, D.O. prescribe most often? ▼
Based on 2023 Medicare Part D data, Da-Thuy Van, D.O.'s most frequently prescribed drugs include Latanoprost, Dorzolamide-Timolol, Prednisolone Acetate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Da-Thuy Van, D.O. accept Medicare? ▼
Da-Thuy Van, D.O. appears in CMS Medicare data with 1,478 Part D claims and 580 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Da-Thuy Van, D.O.'s credentials? ▼
Da-Thuy Van, D.O.'s NPI is 1750375580 with credentials D.O.. 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.