Chun Joey Chang, M.D.
Emergency Medicine Physician · Modesto, CA
Chun Joey Chang, M.D. is an emergency medicine physician with a practice address in Modesto, California, and NPI 1003015462, issued on Jul 16, 2007. Check the license (California A106131, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Chun Joey Chang
- Credential
- M.D.
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License numbers
- A106131 CA
22015 MD
Self-reported in NPPES; status is on the state search - Practice location
- 401 Paradise RD, Modesto, CA 95351
- Phone
- (209) 558-5107
- Enumerated
- Jul 16, 2007
- Record last updated
- Sep 6, 2022
- Medicare enrollment
- Enrolled (PECOS I20140819002635); accepts Medicare assignment
- Medical or professional school
- University Of California, Geffen School Of Medicine, 2006
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 7,751 in California → Look up another NPI →
Also registered at 401 Paradise RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Peter Broderick, M.D., M.ED.Family Medicine Physician1285645002
- Herbert Cho, RPHPharmacist1902334311
- Patricio Clavecillas, MDFamily Medicine Physician1336435817
- Marcio Correa, PA-CPhysician Assistant1144523739
- Long Dang, MDStudent in an Organized Health Care Education/Training Program1457813610
- Lori Doyle, PAMedical Physician Assistant1982755161
Verify Chun Joey Chang in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A106131Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3.1 times the Medicare Part D claims of the average emergency medicine physician in 2024
695 Medicare Part D claims for 352 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. 57 claims were for opioids.
Most prescribed
- Ibuprofen93 claims
- Cephalexin57 claims
- Ondansetron Odt54 claims
- Methylprednisolone46 claims
- Prednisone40 claims
- Albuterol Sulfate Hfa28 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 practice group's MIPS final score for 2023 (Medicare payment program): 94.6 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. 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, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $198.36
5 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 12,335 providers of this specialty with any payment received $953.79 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 4 group practices
- Anaheim Emergency Medical GroupAnaheim, CA
- Cep America - CaliforniaPomona, CA
- Gem Medical Group CorporationMonterey Park, CA
- Ignite Emergency Physicians A Medical CorporationVictorville, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Chun Joey Chang among 7,751 emergency medicine physician records in California
Chun Joey Chang, M.D. is one of 7,751 emergency medicine physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 40% of them.
- NPI issued2007 · 40% of these records are older, 50% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated2006 · median 2011 among the 4,560 with a school on file
- Record last updated2022 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Emergency Medicine Physician providers in California
There are 7,751 emergency medicine physician records in California.
All 7,751 in California → Every provider in Modesto → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Robert Barandica, M.D.Modesto, CA 953501346295888
- Ranti Bolaji, MDModesto, CA 953501417217993
- Dana Buchanan, D.OModesto, CA 953501174539423
- Phillip Chan, M.D.Modesto, CA 953501043576531
- Robert Donovan, M.DModesto, CA 953501790730869
- Joanna Dumont, D.OModesto, CA 953501699207696
- Sarah Dunn, M.D.Modesto, CA 953501215170956
- Asit Gokli, M.D.Modesto, CA 953501114942059
Common questions
What is Chun Joey Chang, M.D.'s NPI number?
Chun Joey Chang, M.D.'s National Provider Identifier (NPI) is 1003015462, issued on Jul 16, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Chun Joey Chang, M.D. located?
The NPPES record lists a practice address at 401 Paradise RD, Modesto, CA, 95351. Phone: (209) 558-5107. Providers update this record themselves, so call before visiting.
How can I verify Chun Joey Chang, M.D.'s license?
NPPES lists California license number A106131, 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 Chun Joey Chang, M.D. prescribe under Medicare Part D?
In 2024, Chun Joey Chang, M.D. had 695 Medicare Part D claims for 352 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.
What is Chun Joey Chang, M.D.'s MIPS final score?
The 2023 MIPS final score is 94.6 of 100, reported for the practice group. 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.