Thuong Nguyen, M.D.
Allergy & Immunology Physician · Visalia, CA
Thuong Nguyen, M.D. is an allergy & immunology physician with a practice address in Visalia, California, and NPI 1831196294, issued on Jun 30, 2005. Check the license (California G77992, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Thuong Nguyen
- Credential
- M.D.
- Primary taxonomy
- Allergy & Immunology Physician 207K00000X
- License number
- G77992 CA
Self-reported in NPPES; status is on the state search - Practice location
- 5400 W Hillsdale Ave, Visalia, CA 93291
- Phone
- (559) 738-7593
- Enumerated
- Jun 30, 2005
- Record last updated
- Oct 3, 2016 (not updated in 10 years: call before relying on the address or phone)
- Fax
- (559) 625-2610
- Medicare enrollment
- Enrolled (PECOS I20080918000155); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest allergy & immunology physician records → All 444 in California → Look up another NPI →
Also registered at 5400 W Hillsdale Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Craig Calloway, M.D.Otolaryngology Physician1154327153
- Kristal Calloway, AUDIOLOGISTAudiologist1194999557
- Joseph Chidi, M.D.Urology Physician1366448318
Verify Thuong Nguyen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G77992Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.2 times the Medicare Part D claims of the average allergy & immunology physician in 2024
1,599 Medicare Part D claims for 239 beneficiaries, against an average of 741 among the 2,899 providers of this specialty who prescribed in Part D. Brand-name drugs were 29% of claims.
Most prescribed
- Azelastine Hcl233 claims
- Montelukast Sodium220 claims
- Fluticasone Propionate131 claims
- Ipratropium Bromide122 claims
- Prednisone76 claims
- Albuterol Sulfate Hfa72 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): 97.1 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).
Industry payments in 2024: $1,984.59
93 payments; by number, the most common kind was food and beverage; the largest payer was Regeneron Healthcare Solutions, Inc. The 2,496 providers of this specialty with any payment received $8,321.81 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
- Adventist Health Physicians NetworkHanford, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Thuong Nguyen among 444 allergy & immunology physician records in California
Thuong Nguyen, M.D. is one of 444 allergy & immunology 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, 93% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated1992 · median 2004 among the 281 with a school on file
- Record last updated2016 · 62% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207K00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Allergy & Immunology Physician providers in California
There are 444 allergy & immunology physician records in California.
All 444 in California → Every provider in Visalia → Allergy & Immunology Physician nationwide →
The 8 allergy & immunology physician records with the nearest ZIP codes
- Eric Boren, MDBakersfield, CA 933011720067598
- Tonny Tanus, MDBakersfield, CA 933011740351873
- Glenn Singer, M.D.Bakersfield, CA 933091801275821
- Robert Holzhauer, MDSan Luis Obispo, CA 934011710955976
- Arthur McLean, MDSan Luis Obispo, CA 934011639106727
- Daniel More, M.D.San Luis Obispo, CA 934011306844279
- Courtney Ramos, D.O.San Luis Obispo, CA 934011144670217
- Kelli Rose, M.D.San Luis Obispo, CA 934011407028798
Common questions
What is Thuong Nguyen, M.D.'s NPI number?
Thuong Nguyen, M.D.'s National Provider Identifier (NPI) is 1831196294, issued on Jun 30, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Thuong Nguyen, M.D. located?
The NPPES record lists a practice address at 5400 W Hillsdale Ave, Visalia, CA, 93291. Phone: (559) 738-7593. Providers update this record themselves, so call before visiting.
How can I verify Thuong Nguyen, M.D.'s license?
NPPES lists California license number G77992, 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 Thuong Nguyen, M.D. prescribe under Medicare Part D?
In 2024, Thuong Nguyen, M.D. had 1,599 Medicare Part D claims for 239 beneficiaries; the average among allergy & immunology physician prescribers was 741. Part D covers Medicare prescriptions only.
What is Thuong Nguyen, M.D.'s MIPS final score?
The 2023 MIPS final score is 97.1 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.