Dr. Vicente Lam Siu, M.D.
What this data tells you about Dr. Lam Siu
Dr. Vicente Lam Siu is an internal medicine specialist in San Angelo, TX, with 18 years of NPI registration. Based on federal Medicare data, Dr. Lam Siu performed 3,721 Medicare services across 2,304 unique beneficiaries.
Between the years covered by Open Payments, Dr. Lam Siu received a total of $961 from 21 pharmaceutical and/or device companies across 41 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in internal medicine. Most payments are for meals and travel — low-value interactions common across virtually all practicing physicians. Patients may wish to discuss these relationships with their provider.
The Data Coverage level for Dr. Lam Siu is Very High — reflecting how much public federal data is available about this provider. This is not a quality rating. Patients are encouraged to use this data as one of several factors when choosing a healthcare provider.
Medicare Practice Summary
Medicare Utilization ↗Top procedures by volume
Ranked by number of services performed for Medicare patients. Avg. submitted charge is what the provider billed; avg. Medicare payment is what CMS paid.
| Procedure | Volume | Avg. paid | Avg. submitted |
|---|---|---|---|
| Office visit, established patient (30-39 min) | 613 | $75 | $216 |
| Blood draw (venipuncture) | 488 | $8 | $8 |
| Hospital follow-up visit, high complexity | 413 | $92 | $204 |
| Hemoglobin A1c test (diabetes monitoring) | 188 | $9 | $58 |
| Advance care planning consultation, first 30 min | 183 | $59 | $166 |
| Hospital follow-up visit, moderate complexity | 169 | $62 | $141 |
| Initial hospital admission, high complexity | 167 | $134 | $396 |
| Drug injection, under skin or into muscle | 148 | $10 | $50 |
| Annual wellness visit, follow-up | 144 | $126 | $230 |
| Steroid injection (triamcinolone) | 136 | $1 | $6 |
| Hospital discharge management, 30+ min | 111 | $89 | $209 |
| Flu vaccine administration | 97 | $17 | $17 |
| Electrocardiogram (EKG), 12-lead | 95 | $9 | $87 |
| Flu vaccine, high-dose | 87 | $60 | $63 |
| Ceftriaxone antibiotic injection | 72 | $0 | $10 |
| Physician or allowed practitioner re-certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians a | 71 | $29 | $135 |
| Annual wellness visit; includes a personalized prevention plan of service (pps), initial visit | 71 | $161 | $330 |
| Transitional care management services for problem of high complexity | 66 | $207 | $439 |
| Injection, ketorolac tromethamine, per 15 mg | 62 | $0 | $10 |
| Injection, vitamin b-12 cyanocobalamin, up to 1000 mcg | 60 | $1 | $10 |
| Adm sarscv2 bvl 30mcg/.3ml a | 36 | $38 | $55 |
| COVID-19 vaccine administration | 33 | $37 | $55 |
| COVID-19 vaccine (Pfizer bivalent) | 33 | $121 | $262 |
| Physician or allowed practitioner certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians and | 30 | $36 | $170 |
| Nursing facility visit, moderate complexity | 29 | $83 | $177 |
| Pneumococcal conjugate vaccine, 20 valent (pcv20), for intramuscular use | 24 | $258 | $529 |
| Pneumonia vaccine administration | 24 | $30 | $50 |
| Office visit, established patient (20-29 min) | 17 | $54 | $182 |
| Transitional care management services for problem of at least moderate complexity | 17 | $158 | $311 |
| Influenza vaccine, quadrivalent, preservative free, 0.5 ml dosage | 13 | $16 | $19 |
| Nursing facility discharge management, more than 30 minutes | 13 | $94 | $206 |
| Initial preventive physical examination; face-to-face visit, services limited to new beneficiary during the first 12 months of medicare enrollment | 11 | $161 | $316 |
Industry Payment Transparency
Open Payments through 2024 ↗Payment profile
Industry payments classified by relationship type. Not all payments are equal — research and consulting reflect different relationships than speaking programs or meals.
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
Payments by company (2024)
Associated products mentioned in payments ›
Most payments (100%) are for meals and travel — low-value interactions that are common across virtually all practicing physicians.
Geographic Context
0.0 mi
Data Sources
| Provider Registry | ✓ NPPES | Weekly updates |
| Medicare Enrollment | ✓ PECOS | Monthly updates |
| Practice Data | ✓ Medicare Util. | Annual (CY lag) |
| Industry Payments | ✓ Open Payments | CY 2024 |
| Disciplinary History | — Not public | N/A |
This provider has data in 4 of 4 available federal datasets, with a Data Coverage level of Very High. This measures how much public data is available about a provider — not how good they are. How we calculate this →
Summary
Dr. Lam Siu is a clinical cardiology specialist, with above-average Medicare volume (top 9% in TX), with low-engagement industry engagement, with 18 years of NPI registration.
This summary is auto-generated from federal data. It describes data availability and patterns — not clinical quality. Read our methodology →
Frequently Asked Questions
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All data on this page is sourced verbatim from public federal records published by the U.S. Centers for Medicare & Medicaid Services (CMS): NPPES ↗, Open Payments ↗, Medicare Provider Utilization ↗, and PECOS. Publication is mandated by the Physician Payments Sunshine Act (§6002 ACA, 42 U.S.C. §1320a-7h) and the Freedom of Information Act.
This page is not medical advice, an endorsement, a recommendation, or a quality rating. The Transparency Score measures data completeness — how much federal information exists for this provider — not clinical performance, patient outcomes, or quality of care. Always verify information directly with the provider and consult a licensed clinician before making medical decisions.
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