James Chia-Chung Chang, M.D.
Anesthesiology Physician · Orange, CA
James Chia-Chung Chang, M.D. is an anesthesiology physician with a practice address in Orange, California, and NPI 1700867298, issued on Nov 10, 2005. Check the license (California A44296, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- James Chia-Chung Chang
- Credential
- M.D.
- Primary taxonomy
- Anesthesiology Physician 207L00000X
- License number
- A44296 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2601 E Chapman Ave, Orange, CA 92869
- Phone
- (714) 633-0011
- Enumerated
- Nov 10, 2005
- Record last updated
- Aug 3, 2018 (not updated in 8 years: call before relying on the address or phone)
- Medicaid ID
- 00A442961 CA
- Medicare enrollment
- Enrolled (PECOS I20050608000240); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest anesthesiology physician records → All 7,571 in California → Look up another NPI →
Also registered at 2601 E Chapman Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Brian Coombe, DOEmergency Medicine Physician1023257755
- Usha Desai, RNFARegistered Nurse First Assistant1144357914
- Candice Dreyer, RDRegistered Dietitian1649313255
Verify James Chia-Chung Chang in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A44296Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Industry payments in 2024: $104.19
1 payment: food and beverage; the largest payer was Pacira Pharmaceuticals Incorporated. The 17,774 providers of this specialty with any payment received $669.59 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
- Orange Coast Anesthesia IncOrange, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
James Chia-Chung Chang among 7,571 anesthesiology physician records in California
James Chia-Chung Chang, M.D. is one of 7,571 anesthesiology physician records with a practice address in California. 71% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 95% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileYes · 64% of these records are
- Graduated1983 · median 2006 among the 4,868 with a school on file
- Record last updated2018 · 63% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207L00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
267 anesthesiology physician records list a practice address in Orange
They are 267 of the 13,245 NPPES records with a practice address in Orange, and 7,571 anesthesiology physician records in California.
All 7,571 in California → Every provider in Orange → Anesthesiology Physician nationwide →
The 8 anesthesiology physician records with the nearest ZIP codes
- Gregory Barnes, M.D.Orange, CA 928691275626871
- Jeffry Chen, M.D.Orange, CA 928691578791620
- Christos Kalatzis, MDOrange, CA 928691154319754
- Kelvin Nguyen, M.D.Orange, CA 928691699861146
- James Nguyen, M.D.Orange, CA 928691679880934
- Wynnson Tom, M.D.Orange, CA 928691902128028
- Ronald C Cellona, MDPlacentia, CA 928701710067806
- Alexander CentalaOrange, CA 928681679215644
Common questions
What is James Chia-Chung Chang, M.D.'s NPI number?
James Chia-Chung Chang, M.D.'s National Provider Identifier (NPI) is 1700867298, issued on Nov 10, 2005. An NPI identifies a provider in billing; it is not a license.
Where is James Chia-Chung Chang, M.D. located?
The NPPES record lists a practice address at 2601 E Chapman Ave, Orange, CA, 92869. Phone: (714) 633-0011. Providers update this record themselves, so call before visiting.
How can I verify James Chia-Chung Chang, M.D.'s license?
NPPES lists California license number A44296, 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.
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.