Chibao Nguyen, D.O.
Internal Medicine Physician · Covina, CA
Chibao Nguyen, D.O. is an internal medicine physician with a practice address in Covina, California, and NPI 1528370830, issued on Jul 2, 2010. Check the license (California 20A11299, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Chibao Nguyen
- Credential
- D.O.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 20A11299 CA
Self-reported in NPPES; status is on the state search - Practice location
- 420 W Rowland St, Covina, CA 91723
- Phone
- (626) 331-6411
- Enumerated
- Jul 2, 2010
- Record last updated
- Jan 4, 2026
- Fax
- (626) 251-1560
- Medicare enrollment
- Enrolled (PECOS I20120131000022); accepts Medicare assignment
- Medical or professional school
- Arizona College Of Osteopathic Medicine Mid Western University, 2008
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 420 W Rowland St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Mary Absood, M.D.Internal Medicine Physician1497735906
- Nancy Aceves, RN, FNPFamily Nurse Practitioner1235171703
- Joseph Alonzo, M.D.Internal Medicine Physician1225077050
- Sarah Anh, M.D.Emergency Medicine Physician1104037159
- Travis Boyer, FNPFamily Nurse Practitioner1265901870
- Annamari Cabrera, MDPediatrics Physician1881653434
Verify Chibao Nguyen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A11299Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
92% fewer Medicare Part D claims than the average internal medicine physician in 2024
254 Medicare Part D claims for 103 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Pantoprazole Sodium18 claims
- Metoprolol Succinate12 claims
- Jardiance11 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: $137.99
2 payments; by number, the most common kind was food and beverage; the largest payer was Janssen Pharmaceuticals, 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 2 group practices
- Healthcare Partners Affiliates Medical GroupCarson, CA
- Pih Health PhysiciansLos Angeles, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Chibao Nguyen among 17,696 internal medicine physician records in California
Chibao Nguyen, D.O. 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 2010, is newer than 63% of them.
- NPI issued2010 · 63% of these records are older, 34% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2008 · median 2004 among the 11,065 with a school on file
- Record last updated2026 · 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).
35 internal medicine physician records list a practice address in Covina
They are 35 of the 3,736 NPPES records with a practice address in Covina, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Covina → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Mary Absood, M.D.Covina, CA 917231497735906
- Joseph Alonzo, M.D.Covina, CA 917231225077050
- Harry Chao, MDCovina, CA 917231487613451
- Kamini Chari, M.D.Covina, CA 917231265489280
- Jerry Cimmarusti, MDCovina, CA 917231386603322
- Vahid Javaherian, DOCovina, CA 917231609836972
- Ahmereen Khan, M.D.Covina, CA 917231174562243
- Sanjay Khedia, M.D.Covina, CA 917231326063801
Common questions
What is Chibao Nguyen, D.O.'s NPI number?
Chibao Nguyen, D.O.'s National Provider Identifier (NPI) is 1528370830, issued on Jul 2, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Chibao Nguyen, D.O. located?
The NPPES record lists a practice address at 420 W Rowland St, Covina, CA, 91723. Phone: (626) 331-6411. Providers update this record themselves, so call before visiting.
How can I verify Chibao Nguyen, D.O.'s license?
NPPES lists California license number 20A11299, 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 Chibao Nguyen, D.O. prescribe under Medicare Part D?
In 2024, Chibao Nguyen, D.O. had 254 Medicare Part D claims for 103 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.