Chau M T Nguyen-Thio, MD
Internal Medicine Physician · Eastvale, CA
Chau M T Nguyen-Thio, MD is an internal medicine physician with a practice address in Eastvale, California, and NPI 1225010135, issued on Nov 16, 2005. Check the license (California G79548, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Chau M T Nguyen-Thio
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- G79548 CA
Self-reported in NPPES; status is on the state search - Practice location
- 12742 Limonite Ave, Eastvale, CA 92880
- Phone
- (951) 739-2717
- Enumerated
- Nov 16, 2005
- Record last updated
- Feb 25, 2020 (not updated in 6 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 12742 Limonite Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Manita Choudhary, MDEndocrinology, Diabetes & Metabolism Physician1730543752
- Mardy Lindt Fionne DiazNurse Practitioner1346707221
- Christian Lanot, M.D.Internal Medicine Physician1962664326
- Anthony Nguyen, MDPediatrics Physician1285042929
- Shina Patel, P.A.Physician Assistant1649228925
Verify Chau M T Nguyen-Thio in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G79548Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% fewer Medicare Part D claims than the average internal medicine physician in 2024
17 Medicare Part D claims, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
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.
Chau M T Nguyen-Thio among 17,696 internal medicine physician records in California
Chau M T Nguyen-Thio, MD is one of 17,696 internal medicine physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 95% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileNo · 63% of these records are
- Record last updated2020 · 61% 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 California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Internal Medicine Physician providers in California
There are 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Eastvale → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Mustafa Al Lami, M.D.Corona, CA 928801689088361
- Marita Banzuela, M.D.Corona, CA 928801114117041
- Thai Do, M.D.Corona, CA 928801619176559
- Christian Lanot, M.D.Eastvale, CA 928801962664326
- Rona Liu, MDCorona, CA 928801952592297
- Christine Adekayode, DOCorona, CA 928791124696331
- Fadia Attia, MDCorona, CA 928811578626925
- Patricia Bogema, D.O.Corona, CA 928811407891617
Common questions
What is Chau M T Nguyen-Thio, MD's NPI number?
Chau M T Nguyen-Thio, MD's National Provider Identifier (NPI) is 1225010135, issued on Nov 16, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Chau M T Nguyen-Thio, MD located?
The NPPES record lists a practice address at 12742 Limonite Ave, Eastvale, CA, 92880. Phone: (951) 739-2717. Providers update this record themselves, so call before visiting.
How can I verify Chau M T Nguyen-Thio, MD's license?
NPPES lists California license number G79548, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Chau M T Nguyen-Thio, MD prescribe under Medicare Part D?
In 2024, Chau M T Nguyen-Thio, MD had 17 Medicare Part D claims; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
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.