Christopher Jia Jen Chang, MD
Emergency Medicine Physician · Fresno, CA
Christopher Jia Jen Chang, MD is an emergency medicine physician with a practice address in Fresno, California, and NPI 1255913737, issued on Apr 24, 2021. Check the license (California A207171, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Christopher Jia Jen Chang
- Credential
- MD
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- A207171 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2823 Fresno St, Fresno, CA 93721
- Phone
- (559) 459-6000
- Enumerated
- Apr 24, 2021
- Record last updated
- Jul 7, 2026
- Fax
- (559) 443-2681
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 7,751 in California → Look up another NPI →
Also registered at 2823 Fresno St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Majdi Abdulmaula, M.DInternal Medicine Physician1295260529
- Reema Aboelrish, PA-CMedical Physician Assistant1376466144
- Reem Aboushaar, MDPediatrics Physician1013543933
- Inas Abukraa, M.DFamily Medicine Physician1376115881
Verify Christopher Jia Jen Chang in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A207171Check 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 emergency medicine physician in 2024
19 Medicare Part D claims for 14 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D.
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: $18.33
1 payment: food and beverage; the largest payer was Boehringer Ingelheim Pharmaceuticals, Inc. 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.
Christopher Jia Jen Chang among 7,751 emergency medicine physician records in California
Christopher Jia Jen Chang, MD 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 2021, is newer than 92% of them.
- NPI issued2021 · 92% of these records are older, 5% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileNo · 59% of these records are
- Record last updated2026 · 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).
228 emergency medicine physician records list a practice address in Fresno
They are 228 of the 19,440 NPPES records with a practice address in Fresno, and 7,751 emergency medicine physician records in California.
All 7,751 in California → Every provider in Fresno → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Janak Acharya, MDFresno, CA 937211376508721
- James Andrews, MDFresno, CA 937211629086269
- Herbert Bivins, MDFresno, CA 937211972619518
- Brian Chinnock, M.D.Fresno, CA 937211861481947
- Carolyn Chooljian, MDFresno, CA 937211982656807
- James Comes, MDFresno, CA 937211669424412
- Michael Darracq, M.D.Fresno, CA 937211275553414
- Ryan Ernst, MD, PA-CFresno, CA 937211396787289
Common questions
What is Christopher Jia Jen Chang, MD's NPI number?
Christopher Jia Jen Chang, MD's National Provider Identifier (NPI) is 1255913737, issued on Apr 24, 2021. An NPI identifies a provider in billing; it is not a license.
Where is Christopher Jia Jen Chang, MD located?
The NPPES record lists a practice address at 2823 Fresno St, Fresno, CA, 93721. Phone: (559) 459-6000. Providers update this record themselves, so call before visiting.
How can I verify Christopher Jia Jen Chang, MD's license?
NPPES lists California license number A207171, 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 Christopher Jia Jen Chang, MD prescribe under Medicare Part D?
In 2024, Christopher Jia Jen Chang, MD had 19 Medicare Part D claims for 14 beneficiaries; the average among emergency medicine physician prescribers was 226. 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.