Liem Thanh Nguyen, M.D.
Internal Medicine Physician · San Angelo, TX
Liem Thanh Nguyen, M.D. is an internal medicine physician with a practice address in San Angelo, Texas, and NPI 1982865952, issued on Jun 22, 2008. Check the license (Texas P0453, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- Liem Thanh Nguyen
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- P0453 TX
Self-reported in NPPES; status is on the state search - Practice location
- 3501 Knickerbocker RD, San Angelo, TX 76904
- Phone
- (325) 245-4000
- Enumerated
- Jun 22, 2008
- Record last updated
- Jan 18, 2012 (not updated in 14 years: call before relying on the address or phone)
- Medicaid ID
- 284190001 TX
- Medicare enrollment
- Enrolled (PECOS I20110927000070); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 9,175 in Texas → Look up another NPI →
Also registered at 3501 Knickerbocker RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Abner Acevedo-Peon, M.DInternal Medicine Physician1619200607
- Caesasonia Agatep, NPNurse Practitioner1154748671
- Kirk Brewer, MDInternal Medicine Physician1700848421
- Joe Briley, ATC, LATSpecialist1760687883
- Jacob Burton, DOAnesthesiology Physician1104449917
- Marvin Carroll, MDEmergency Medicine Physician1073547451
Verify Liem Thanh Nguyen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license P0453Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
83% fewer Medicare Part D claims than the average internal medicine physician in 2024
543 Medicare Part D claims for 193 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 7% of claims.
Most prescribed
- Atorvastatin Calcium38 claims
- Pantoprazole Sodium37 claims
- Levofloxacin31 claims
- Potassium Chloride23 claims
- Clopidogrel22 claims
- Metoprolol Succinate22 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 MIPS final score for 2023 (Medicare payment program): 49.4 of 100
The Merit-based Incentive Payment System score is reported for this clinician. 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; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Quantum Emergency Physicians PAAbilene, TX
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Liem Thanh Nguyen among 9,175 internal medicine physician records in Texas
Liem Thanh Nguyen, 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 2008, is newer than 50% of them.
- NPI issued2008 · 50% of these records are older, 46% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated2008 · median 2004 among the 6,088 with a school on file
- Record last updated2012 · 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
- Abner Acevedo-Peon, M.DSan Angelo, TX 769041619200607
- Idalia Alaniz, MDSan Angelo, TX 769041629341458
- Kirk Brewer, MDSan Angelo, TX 769041700848421
- Ross Carmichael, MDSan Angelo, TX 769041285696872
- Danilo Cruz, M.D.San Angelo, TX 769041508882952
- Dennis Durham, MDSan Angelo, TX 769041013945500
- Johnny French, MDSan Angelo, TX 769041811959505
- John Granaghan, MDSan Angelo, TX 769041083676787
Common questions
What is Liem Thanh Nguyen, M.D.'s NPI number?
Liem Thanh Nguyen, M.D.'s National Provider Identifier (NPI) is 1982865952, issued on Jun 22, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Liem Thanh Nguyen, M.D. located?
The NPPES record lists a practice address at 3501 Knickerbocker RD, San Angelo, TX, 76904. Phone: (325) 245-4000. Providers update this record themselves, so call before visiting.
How can I verify Liem Thanh Nguyen, M.D.'s license?
NPPES lists Texas license number P0453, 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 Liem Thanh Nguyen, M.D. prescribe under Medicare Part D?
In 2024, Liem Thanh Nguyen, M.D. had 543 Medicare Part D claims for 193 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Liem Thanh Nguyen, M.D.'s MIPS final score?
The 2023 MIPS final score is 49.4 of 100. 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.