Chaonan Ding, M.D.
Public Health & General Preventive Medicine Physician · West Covina, CA
Chaonan Ding, M.D. is a public health & general preventive medicine physician with a practice address in West Covina, California, and NPI 1285078105, issued on Apr 22, 2013. Check the license (California A139786, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Chaonan Ding
- Credential
- M.D.
- Primary taxonomy
- Public Health & General Preventive Medicine Physician 2083P0901X
- License number
- A139786 CA
Self-reported in NPPES; status is on the state search - Practice location
- 420 S Glendora Ave, West Covina, CA 91790
- Phone
- (909) 620-8088
- Enumerated
- Apr 22, 2013
- Record last updated
- Aug 25, 2020 (not updated in 6 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20160707002634); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest public health & general preventive medicine physician records → All 325 in California → Look up another NPI →
Also registered at 420 S Glendora Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Julie Alcid, NPFamily Nurse Practitioner1740695519
- Denisee Alonso, RDRegistered Dietitian1881283083
- Kimberly Amato, PACPhysician Assistant1477505014
- Lynn Amores, MDFamily Medicine Physician1063553618
- Javanne Brooks, FNPFamily Nurse Practitioner1760884654
- Connie Cajavilca-Torres, MDFamily Medicine Physician1508342924
Verify Chaonan Ding in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A139786Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
71% more Medicare Part D claims than the average public health & general preventive medicine physician in 2024
1,406 Medicare Part D claims for 108 beneficiaries, against an average of 820 among the 336 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims.
Most prescribed
- Amlodipine Besylate98 claims
- Losartan Potassium83 claims
- Metformin Hcl78 claims
- Lisinopril77 claims
- Simvastatin65 claims
- Clopidogrel61 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: $70.85
3 payments; by number, the most common kind was food and beverage; the largest payer was Novo Nordisk Inc. The 181 providers of this specialty with any payment received $3,513.55 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
- East Valley Community Health Center, Inc.West Covina, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Chaonan Ding among 325 public health & general preventive medicine physician records in California
Chaonan Ding, M.D. is one of 325 public health & general preventive medicine physician records with a practice address in California. 27% 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 74% of them.
- NPI issued2013 · 74% of these records are older, 24% newer
- In a Medicare fileYes · 27% of these records are
- In the CMS Doctors and Clinicians fileYes · 13% of these records are
- Graduated2005 · median 2008 among the 42 with a school on file
- Record last updated2020 · 68% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2083P0901X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Public Health & General Preventive Medicine Physician providers in California
There are 325 public health & general preventive medicine physician records in California.
All 325 in California → Every provider in West Covina → Public Health & General Preventive Medicine Physician nationwide →
The 8 public health & general preventive medicine physician records with the nearest ZIP codes
- Gordon Wong, M.D., PH.D., M.P.H.Alhambra, CA 918011639345184
- Susan Baldwin, MD, MPHAlhambra, CA 918031942494182
- Aileen Lo, M.D.Ontario, CA 917611487972261
- Blayne CutlerCity Of Industry, CA 917461053763490
- Wollelaw Agmas, M.DRancho Cucamonga, CA 917301174937825
- Douglas Melnick, MD, MPHNorth Hollywood, CA 916011932488806
- Nandini Sodhi, M.D.North Hollywood, CA 916011922205590
- Valencia Porter, M.D.Carlsbad, CA 920081568593374
Common questions
What is Chaonan Ding, M.D.'s NPI number?
Chaonan Ding, M.D.'s National Provider Identifier (NPI) is 1285078105, issued on Apr 22, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Chaonan Ding, M.D. located?
The NPPES record lists a practice address at 420 S Glendora Ave, West Covina, CA, 91790. Phone: (909) 620-8088. Providers update this record themselves, so call before visiting.
How can I verify Chaonan Ding, M.D.'s license?
NPPES lists California license number A139786, 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 Chaonan Ding, M.D. prescribe under Medicare Part D?
In 2024, Chaonan Ding, M.D. had 1,406 Medicare Part D claims for 108 beneficiaries; the average among public health & general preventive medicine physician prescribers was 820. 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.