Chao-Huang Sun, M.D., MPH
Nephrology Physician · Riverside, CA
Chao-Huang Sun, M.D., MPH is a nephrology physician with a practice address in Riverside, California, and NPI 1134174493, issued on May 24, 2006. Check the license (California A40997, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Chao-Huang Sun
- Credential
- M.D., MPH
- Primary taxonomy
- Nephrology Physician 207RN0300X
- License number
- A40997 CA
Self-reported in NPPES; status is on the state search - Practice location
- 3660 Park Sierra Dr, Riverside, CA 92505
- Phone
- (951) 687-2800
- Enumerated
- May 24, 2006
- Record last updated
- Nov 9, 2015 (not updated in 11 years: call before relying on the address or phone)
- Fax
- (951) 687-7290
- Medicaid ID
- 00A409970 CA
- Entity
- Type 1 · individual
8 nearest nephrology physician records → All 1,468 in California → Look up another NPI →
Also registered at 3660 Park Sierra Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Rizwan Badar, M.D.Nephrology Physician1073761243
- Eric Changchien, MDSurgery Physician1710137401
- Ly Duong, NPFamily Nurse Practitioner1497261614
- Monica Falcon, PA-CSurgical Physician Assistant1588750152
- Arthur Galoustian, MDNephrology Physician1487685426
- Rahul Gohil, MDSurgery Physician1679754873
Verify Chao-Huang Sun in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A40997Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% fewer Medicare Part D claims than the average nephrology physician in 2024
13 Medicare Part D claims, against an average of 1,465 among the 10,986 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of 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.
Chao-Huang Sun among 1,468 nephrology physician records in California
Chao-Huang Sun, M.D., MPH 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 2006, is newer than 10% of them.
- NPI issued2006 · 10% of these records are older, 48% newer
- In a Medicare fileYes · 88% of these records are
- In the CMS Doctors and Clinicians fileNo · 77% of these records are
- Record last updated2015 · 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 Riverside → Nephrology Physician nationwide →
The 8 nephrology physician records with the nearest ZIP codes
- Rizwan Badar, M.D.Riverside, CA 925051073761243
- Arthur Galoustian, MDRiverside, CA 925051487685426
- Naveen Gupta, MDRiverside, CA 925051790979938
- Salam Ishak, M.DRiverside, CA 925051427152842
- Taher Khalil, M.D.Riverside, CA 925051962458752
- Joseph Lee, M.D.Riverside, CA 925051477599579
- Howard Lee, DORiverside, CA 925051932276144
- Hamik Martirosyan, MDRiverside, CA 925051316014145
Common questions
What is Chao-Huang Sun, M.D., MPH's NPI number?
Chao-Huang Sun, M.D., MPH's National Provider Identifier (NPI) is 1134174493, issued on May 24, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Chao-Huang Sun, M.D., MPH located?
The NPPES record lists a practice address at 3660 Park Sierra Dr, Riverside, CA, 92505. Phone: (951) 687-2800. Providers update this record themselves, so call before visiting.
How can I verify Chao-Huang Sun, M.D., MPH's license?
NPPES lists California license number A40997, 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 Chao-Huang Sun, M.D., MPH prescribe under Medicare Part D?
In 2024, Chao-Huang Sun, M.D., MPH had 13 Medicare Part D claims; 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.