NPI registry status
Active
2026 NPPES data Specialist NPI 1306833173 MD
Verify on CMS → Lloyd Vanwinkle, MD
Specialist in Castroville, 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 69,567 in Specialist, 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
64K
Medicare Part D claims · 45K beneficiaries · Specialist avg: 2K
Generic prescribing
8%
generic claims · 92% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$1.2K
61 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
Lloyd Vanwinkle, MD filed 63,994 Medicare Part D claims in 2024 as a Specialist in Castroville, Texas, prescribing 8% generic.
- 64K
- Part D claims, 2024
- 8%
- generic prescribing
- $1.2K
- industry payments (Sunshine Act)
- ≥98th
- 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 Lloyd Vanwinkle, 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 1306833173), first enumerated 10/05/2005.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 63,994 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
Hospital affiliations
1 CMS Care Compare hospital affiliation on record — practice footprint from the Doctors and Clinicians file.
Source: CMS Care Compare
- Reported
Industry payment transparency
$1.2K in reported industry payments (61 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
Texas statewide board action statistics are published annually — these figures describe aggregate state activity, not Lloyd Vanwinkle, 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 1306833173 · Specialist
NPI-10 · ENUM-LEGACY · TAX-MEGA · RX-HEAVY · BOOK-LIGHT · PHOTO-ENUM
- NPI-10 1306833173
- ENUM-LEGACY 2005
- TAX-MEGA 70K Specialist
- RX-HEAVY 64K claims
- BOOK-LIGHT 2,380 in Texas
- PHOTO-ENUM Andrew Markiewitz, M… · 2005
Lloyd Vanwinkle, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
63,994 ≥ 98th percentile 98% 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
What does the federal data show about Lloyd Vanwinkle, MD?
Quality data not reportedPrimary specialty
Specialist
Medicare Part D claims
63,994 42× vs specialty avg
Specialty distribution in Texas
How Specialist 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 Specialist. 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 | 1306833173 |
|---|---|
| Specialty | Specialist |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 10/05/2005 |
Hospital and facility affiliations
Facilities where Lloyd Vanwinkle, 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.
Lloyd P Van Winkle, MD, PA
Castroville, TX
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
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 Lloyd Vanwinkle, MD. Source: openpaymentsdata.cms.gov.
Total received
$1.2K
Largest payer
Novo Nordisk 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 - 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 Lloyd Vanwinkle, MD. To verify Lloyd Vanwinkle, 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.
Brand vs generic prescribing mix · Brand-heavy
Lloyd Vanwinkle, MD - brand share 92.0%
Specialist average
92% brand-name claims vs 8% generic, on 63,994 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.
63,994
Total Claims
$13.0M
Total Drug Cost
45,497
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 70,757.433
- Total Day Supply
- 424,586
- Brand vs Generic
- 92% brand / 8% generic
- Brand Drug Cost
- $12.9M
- Generic Drug Cost
- $85K
- Opioid Claims
- 77 (0.1% rate)
- Antibiotic Claims
- 92
Patient Demographics
- Average Patient Age
- 74.0 years
- Avg HCC Risk Score
- 1.20
- Gender Split
- 57% female / 43% male
- Age Distribution
- <65: 2,171, 65-74: 22,685, 75-84: 16,758, 85+: 3,883
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Lloyd Vanwinkle, MD prescribes most
Top Medicare Part D drugs by claim count, 2024
- Shingrix
Shingrix
25,807 claims
- Abrysvo
Abrysvo
21,474 claims
- Boostrix Tdap 9,283
Boostrix Tdap
9,283 claims
- Twinrix 762
Twinrix
762 claims
- Atorvastatin Calcium 321
Atorvastatin Calcium
321 claims
- Levothyroxine Sodium 282
Levothyroxine Sodium
282 claims
- Amlodipine Besylate 278
Amlodipine Besylate
278 claims
- Havrix 213
Havrix
213 claims
| Drug | Claims |
|---|---|
| Shingrix Varicella-Zoster Ge/As01b/Pf | 25,807 |
| Abrysvo Rsv Vacc, Pref A And Pref B/Pf | 21,474 |
| Boostrix Tdap Diphth,pertuss(Acell),tet Vac | 9,283 |
| Twinrix Hepatitis A And B Vaccine/Pf | 762 |
| Atorvastatin Calcium | 321 |
| Levothyroxine Sodium | 282 |
| Amlodipine Besylate | 278 |
| Havrix Hepatitis A Virus Vaccine/Pf | 213 |
| Lisinopril | 169 |
| Rosuvastatin Calcium | 151 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Specialist Overview
How Lloyd Vanwinkle, MD fits within the Specialist landscape nationally.
69,567
Specialist Providers in US
55
States with Specialist
1,524
Avg Claims per Provider
Lloyd Vanwinkle, MD's 63,994 claims are above the specialty average of 1,524.
Nationwide Specialist peers with similar MIPS or enrollment year
Two federal-record peer sets for Vanwinkle, both outside Texas so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2005)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Specialist Providers in Texas
Other clinicians with the same primary specialty enrolled in Texas, drawn from the same CMS NPPES roster as Vanwinkle.
One of 2,380 Specialist providers enrolled in Texas, 5 are shown here.
Beverly Abbott
Longview, TX
Dr. Magdy Abdelsayed
M.D.
Baytown, TX
Robin Abels
OTR
Carrollton, TX
Dr. Amr Abouleish
M.D.
Galveston, TX
Paul Abrell
ATC, L
El Paso, TX
Compare Specialist nationally: see state-by-state distribution →
Frequently Asked Questions
What is Lloyd Vanwinkle, MD's specialty? ▼
Lloyd Vanwinkle, MD specializes in Specialist and practices in Castroville, Texas. Credentials: MD.
How much does Lloyd Vanwinkle, MD prescribe under Medicare Part D? ▼
In 2024, Lloyd Vanwinkle, MD wrote 63,994 Medicare Part D claims totaling $13.0M in drug costs for 45,497 beneficiaries.
Where is Lloyd Vanwinkle, MD located? ▼
Lloyd Vanwinkle, MD is located at 409 MADRID ST, Castroville, TX, 78009. Phone: (830) 538-2254.
What is Lloyd Vanwinkle, MD's NPI number? ▼
Lloyd Vanwinkle, MD's National Provider Identifier (NPI) is 1306833173, issued on 10/05/2005.
Does Lloyd Vanwinkle, MD prescribe more brand-name or generic drugs? ▼
Lloyd Vanwinkle, MD's prescribing is 92% brand-name and 8% generic drugs by claim count, with $12.9M in brand drug costs.
Does Lloyd Vanwinkle, MD prescribe opioids? ▼
Yes, Lloyd Vanwinkle, MD had 77 opioid claims in 2024 with an opioid prescribing rate of 0.1%.
How many Specialist providers are there in the US? ▼
There are 69,567 Specialist providers across 55 states in the US. The average Specialist provider writes 1,524 Medicare Part D claims per year.
What drugs does Lloyd Vanwinkle, MD prescribe most often? ▼
Based on 2024 Medicare Part D data, Lloyd Vanwinkle, MD's most frequently prescribed drugs include Shingrix, Abrysvo, Boostrix Tdap. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Lloyd Vanwinkle, MD accept Medicare? ▼
Lloyd Vanwinkle, MD appears in CMS Medicare data with 63,994 Part D claims and 45,497 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Lloyd Vanwinkle, MD's credentials? ▼
Lloyd Vanwinkle, MD's NPI is 1306833173 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.