Vicente Lam Siu, M.D.
Internal Medicine Physician · San Angelo, TX
Vicente Lam Siu, M.D. is an internal medicine physician with a practice address in San Angelo, Texas, and NPI 1497958862, issued on Jun 6, 2007. Check the license (Texas R9092, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- Vicente Lam Siu
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- R9092 TX
Self-reported in NPPES; status is on the state search - Practice location
- 120 E Beauregard Ave, San Angelo, TX 76903
- Phone
- (325) 658-1511
- Enumerated
- Jun 6, 2007
- Record last updated
- Jan 29, 2020 (not updated in 6 years: call before relying on the address or phone)
- Medicaid ID
- 391439201 TX
- Medicare enrollment
- Enrolled (PECOS I20181020000562); accepts Medicare assignment
- Medical or professional school
- University Of Puerto Rico School Of Medicine, 2006
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 9,175 in Texas → Look up another NPI →
Also registered at 120 E Beauregard Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Jerry Ammon, M.D.Anesthesiology Physician1598851750
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- Edward Artnak, MDGastroenterology Physician1659352433
- Carmina Aybar Rodriguez, M.D.Infectious Disease Physician1548717309
Verify Vicente Lam Siu in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license R9092Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3.9 times the Medicare Part D claims of the average internal medicine physician in 2024
12,407 Medicare Part D claims for 655 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims. 128 claims were for opioids.
Most prescribed
- Atorvastatin Calcium694 claims
- Levothyroxine Sodium635 claims
- Gabapentin457 claims
- Furosemide390 claims
- Metformin Hcl361 claims
- Lisinopril348 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 95.8 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $86.40
5 payments; by number, the most common kind was food and beverage; the largest payer was Pfizer Inc. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through 2 group practices
- Shannon ClinicSan Angelo, TX
- The West Texas Rehabilitation CenterAbilene, TX
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Vicente Lam Siu among 9,175 internal medicine physician records in Texas
Vicente Lam Siu, M.D. is one of 9,175 internal medicine physician records with a practice address in Texas. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 41% of them.
- NPI issued2007 · 41% of these records are older, 50% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated2006 · median 2004 among the 6,088 with a school on file
- Record last updated2020 · 49% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
61 internal medicine physician records list a practice address in San Angelo
They are 61 of the 1,796 NPPES records with a practice address in San Angelo, and 9,175 internal medicine physician records in Texas.
All 9,175 in Texas → Every provider in San Angelo → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Carl Anderton, M.D.San Angelo, TX 769031912999871
- James Barnett, M.D.San Angelo, TX 769031780676411
- Meena Betha, MDSan Angelo, TX 769031699752063
- Paul Borgfeld, M. D.San Angelo, TX 769031104820976
- Anna Goritsas, M.D.San Angelo, TX 769031306896642
- John Harvey, MDSan Angelo, TX 769031811952427
- Ty Hughston, M.D.San Angelo, TX 769031265426027
- Charles Jones, MDSan Angelo, TX 769031023002888
Common questions
What is Vicente Lam Siu, M.D.'s NPI number?
Vicente Lam Siu, M.D.'s National Provider Identifier (NPI) is 1497958862, issued on Jun 6, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Vicente Lam Siu, M.D. located?
The NPPES record lists a practice address at 120 E Beauregard Ave, San Angelo, TX, 76903. Phone: (325) 658-1511. Providers update this record themselves, so call before visiting.
How can I verify Vicente Lam Siu, M.D.'s license?
NPPES lists Texas license number R9092, as entered by the provider. Search the Texas Medical Board at https://profile.tmb.state.tx.us/Search.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Vicente Lam Siu, M.D. prescribe under Medicare Part D?
In 2024, Vicente Lam Siu, M.D. had 12,407 Medicare Part D claims for 655 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Vicente Lam Siu, M.D.'s MIPS final score?
The 2023 MIPS final score is 95.8 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.