Charles Nguyen, M.D.
Nephrology Physician · Eastvale, CA
Charles Nguyen, M.D. is a nephrology physician with a practice address in Eastvale, California, and NPI 1538400288, issued on Mar 5, 2013. Check the license (California A124779, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Charles Nguyen
- Credential
- M.D.
- Primary taxonomy
- Nephrology Physician 207RN0300X
- License number
- A124779 CA
Self-reported in NPPES; status is on the state search - Practice location
- 12523 Limonite Ave Ste 400, Eastvale, CA 91752
- Phone
- (951) 398-6868
- Enumerated
- Mar 5, 2013
- Record last updated
- Aug 9, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (951) 221-8501
- Medicare enrollment
- Enrolled (PECOS I20160712000886); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest nephrology physician records → All 1,468 in California → Look up another NPI →
Also registered at 12523 Limonite Ave Ste 400
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Mrinal Dhar, MDUrology Physician1417275256
- Kristian Miles, FNP-CFamily Nurse Practitioner1578815106
- Sarah Nelson, FNP-CFamily Nurse Practitioner1518414515
Verify Charles Nguyen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A124779Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.4 times the Medicare Part D claims of the average nephrology physician in 2024
3,489 Medicare Part D claims for 408 beneficiaries, against an average of 1,465 among the 10,986 providers of this specialty who prescribed in Part D. Brand-name drugs were 30% of claims.
Most prescribed
- Farxiga339 claims
- Calcitriol223 claims
- Furosemide215 claims
- Amlodipine Besylate203 claims
- Lokelma147 claims
- Hydralazine Hcl143 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: $1,106.51
56 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 8,230 providers of this specialty with any payment received $3,091.37 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
- Nephrology Associates Medical Group IncNorco, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Charles Nguyen among 1,468 nephrology physician records in California
Charles Nguyen, M.D. is one of 1,468 nephrology physician records with a practice address in California. 88% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2013, is newer than 83% of them.
- NPI issued2013 · 83% of these records are older, 15% newer
- In a Medicare fileYes · 88% of these records are
- In the CMS Doctors and Clinicians fileYes · 77% of these records are
- Graduated2011 · median 2001 among the 1,128 with a school on file
- Record last updated2021 · 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 207RN0300X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Nephrology Physician providers in California
There are 1,468 nephrology physician records in California.
All 1,468 in California → Every provider in Eastvale → Nephrology Physician nationwide →
The 8 nephrology physician records with the nearest ZIP codes
- Hone Kaw, M.DMonterey Park, CA 917541750729588
- Carlos Meza, M.D.Monterey Park, CA 917541063592269
- Adam Sun, MDMonterey Park, CA 917541497712715
- Lynn Wang, M.D.Monterey Park, CA 917541598715062
- Jim-Jer Hwu, MDMonterey Park, CA 917551275634248
- Deborah Lu, MDHacienda Heights, CA 917451992264709
- Chao-Ming Lu, M.D.Hacienda Heights, CA 917451871515163
- Hla Myint Maung Hwang, M.D.Ontario, CA 917621356357560
Common questions
What is Charles Nguyen, M.D.'s NPI number?
Charles Nguyen, M.D.'s National Provider Identifier (NPI) is 1538400288, issued on Mar 5, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Charles Nguyen, M.D. located?
The NPPES record lists a practice address at 12523 Limonite Ave Ste 400, Eastvale, CA, 91752. Phone: (951) 398-6868. Providers update this record themselves, so call before visiting.
How can I verify Charles Nguyen, M.D.'s license?
NPPES lists California license number A124779, 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 Charles Nguyen, M.D. prescribe under Medicare Part D?
In 2024, Charles Nguyen, M.D. had 3,489 Medicare Part D claims for 408 beneficiaries; the average among nephrology physician prescribers was 1,465. 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.