Joe Thanh Nguyen, M.D.
Internal Medicine Physician · Mission Viejo, CA
Joe Thanh Nguyen, M.D. is an internal medicine physician with a practice address in Mission Viejo, California, and NPI 1740361187, issued on Oct 18, 2006. Check the license (California G81215, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Joe Thanh Nguyen
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- G81215 CA
Self-reported in NPPES; status is on the state search - Practice location
- 26800 Crown Valley Pkwy Ste 315, Mission Viejo, CA 92691
- Phone
- (949) 364-6000
- Enumerated
- Oct 18, 2006
- Record last updated
- Nov 9, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (949) 364-1204
- Medicaid ID
- 1740361187 CA
- Medicare enrollment
- Enrolled (PECOS I20050124001037); accepts Medicare assignment
- Medical or professional school
- Loma Linda University School Of Medicine, 1993
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 26800 Crown Valley Pkwy Ste 315
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Eric Benner, M.D.Internal Medicine Physician1063648343
- Rana Lee, PA-CPhysician Assistant1154090645
- Maria Savitt, MDInternal Medicine Physician1982603718
Verify Joe Thanh Nguyen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G81215Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.7 times the Medicare Part D claims of the average internal medicine physician in 2024
8,652 Medicare Part D claims for 707 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims. 230 claims were for opioids.
Most prescribed
- Atorvastatin Calcium486 claims
- Amlodipine Besylate475 claims
- Rosuvastatin Calcium340 claims
- Levothyroxine Sodium315 claims
- Zolpidem Tartrate232 claims
- Metformin Hcl225 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.
Industry payments in 2024: $18.64
1 payment: 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 one group practice
- Providence Medical FoundationFullerton, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Joe Thanh Nguyen among 17,696 internal medicine physician records in California
Joe Thanh Nguyen, M.D. 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 2006, is newer than 5% of them.
- NPI issued2006 · 5% of these records are older, 56% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated1993 · median 2004 among the 11,065 with a school on file
- Record last updated2021 · 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).
58 internal medicine physician records list a practice address in Mission Viejo
They are 58 of the 2,156 NPPES records with a practice address in Mission Viejo, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Mission Viejo → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Bahman Badie, M.D.Mission Viejo, CA 926911396721916
- Sherif El Sokkary, M.D.Mission Viejo, CA 926911710964432
- Dennis Haghighat, M.D.Mission Viejo, CA 926911568449171
- Mark Hauptman, M.D.Mission Viejo, CA 926911801873427
- Raymond Kwa, M.D.Mission Viejo, CA 926911609853092
- Murray Margolis, M.D.Mission Viejo, CA 926911457338857
- Vy Nguyen, M.D.Mission Viejo, CA 926911881671154
- Nader Noorian, M.D.Mission Viejo, CA 926911861479057
Common questions
What is Joe Thanh Nguyen, M.D.'s NPI number?
Joe Thanh Nguyen, M.D.'s National Provider Identifier (NPI) is 1740361187, issued on Oct 18, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Joe Thanh Nguyen, M.D. located?
The NPPES record lists a practice address at 26800 Crown Valley Pkwy Ste 315, Mission Viejo, CA, 92691. Phone: (949) 364-6000. Providers update this record themselves, so call before visiting.
How can I verify Joe Thanh Nguyen, M.D.'s license?
NPPES lists California license number G81215, 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 Joe Thanh Nguyen, M.D. prescribe under Medicare Part D?
In 2024, Joe Thanh Nguyen, M.D. had 8,652 Medicare Part D claims for 707 beneficiaries; 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.