Chidao L. Nguyen, DO
Hospitalist Physician · Westminster, CA
Chidao L. Nguyen, DO is a hospitalist physician with a practice address in Westminster, California, and NPI 1780850198, issued on May 6, 2008. Check the license (California 20A10338, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Chidao L. Nguyen
- Credential
- DO
- Primary taxonomy
- Hospitalist Physician 208M00000X
- License number
- 20A10338 CA
Self-reported in NPPES; status is on the state search - Practice location
- 9353 Bolsa Ave, Westminster, CA 92683
- Phone
- (800) 461-4651
- Enumerated
- May 6, 2008
- Record last updated
- Apr 19, 2017 (not updated in 9 years: call before relying on the address or phone)
- Fax
- (714) 333-4838
- Medicare enrollment
- Enrolled (PECOS I20080613000465); accepts Medicare assignment
- Medical or professional school
- Western University Of Health Sciences College Of Dental Med, 2006
- Entity
- Type 1 · individual
8 nearest hospitalist physician records → All 3,099 in California → Look up another NPI →
Also registered at 9353 Bolsa Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Lan Phuong Tran, DDSGeneral Practice Dentistry1134344294
- Tuan Tran, R.PH.Pharmacist1134516412
Verify Chidao L. Nguyen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A10338Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
4.2 times the Medicare Part D claims of the average hospitalist physician in 2024
2,175 Medicare Part D claims for 390 beneficiaries, against an average of 521 among the 21,613 providers of this specialty who prescribed in Part D. 68 claims were for opioids.
Most prescribed
- Atorvastatin Calcium111 claims
- Furosemide94 claims
- Metoprolol Tartrate87 claims
- Amlodipine Besylate81 claims
- Pantoprazole Sodium81 claims
- Eliquis55 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): 100 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: $79.11
3 payments; by number, the most common kind was food and beverage; the largest payer was Ucb, Inc. The 7,324 providers of this specialty with any payment received $494.84 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.
Chidao L. Nguyen among 3,099 hospitalist physician records in California
Chidao L. Nguyen, DO is one of 3,099 hospitalist physician records with a practice address in California. 90% 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 34% of them.
- NPI issued2008 · 34% of these records are older, 61% newer
- In a Medicare fileYes · 90% of these records are
- In the CMS Doctors and Clinicians fileYes · 81% of these records are
- Graduated2006 · median 2010 among the 2,505 with a school on file
- Record last updated2017 · 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 208M00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hospitalist Physician providers in California
There are 3,099 hospitalist physician records in California.
All 3,099 in California → Every provider in Westminster → Hospitalist Physician nationwide →
The 8 hospitalist physician records with the nearest ZIP codes
- Zakiat Jalilvand, DORancho Santa Margarita, CA 926881548532658
- Ajit Ahluwalia, MD, MHAMission Viejo, CA 926911548465156
- Reza Dehkordi, MDMission Viejo, CA 926911679540116
- William Gustin, MDSan Juan Capistrano, CA 926751457431504
- Keith Hsu, MDMission Viejo, CA 926911891921458
- Kevin Le, MDMission Viejo, CA 926911356594675
- Michael Monge, M.D.Mission Viejo, CA 926911457513178
- Sina Neshatian, M.D.Mission Viejo, CA 926911750510913
Common questions
What is Chidao L. Nguyen, DO's NPI number?
Chidao L. Nguyen, DO's National Provider Identifier (NPI) is 1780850198, issued on May 6, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Chidao L. Nguyen, DO located?
The NPPES record lists a practice address at 9353 Bolsa Ave, Westminster, CA, 92683. Phone: (800) 461-4651. Providers update this record themselves, so call before visiting.
How can I verify Chidao L. Nguyen, DO's license?
NPPES lists California license number 20A10338, 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 Chidao L. Nguyen, DO prescribe under Medicare Part D?
In 2024, Chidao L. Nguyen, DO had 2,175 Medicare Part D claims for 390 beneficiaries; the average among hospitalist physician prescribers was 521. Part D covers Medicare prescriptions only.
What is Chidao L. Nguyen, DO's MIPS final score?
The 2023 MIPS final score is 100 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.