Isabel Chang
Anesthesiology Physician · Orange, CA
Isabel Chang is an anesthesiology physician with a practice address in Orange, California, and NPI 1821452293, issued on Apr 11, 2016. Check the license (California A156035, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Isabel Chang
- Primary taxonomy
- Anesthesiology Physician 207L00000X
- License number
- A156035 CA
Self-reported in NPPES; status is on the state search - Practice location
- 333 City Blvd W Ste 2150, Orange, CA 92868
- Phone
- (714) 456-5501
- Enumerated
- Apr 11, 2016
- Record last updated
- Apr 4, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20200610000148); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest anesthesiology physician records → All 7,571 in California → Look up another NPI →
Also registered at 333 City Blvd W Ste 2150
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Jason Cosman, MDStudent in an Organized Health Care Education/Training Program1033798020
- Diana Diaz, M.D.Anesthesiology Physician1932424793
- Tin Dinh, MDStudent in an Organized Health Care Education/Training Program1306588306
- Scott Erwin, MDAnesthesiology Physician1184187247
Verify Isabel Chang in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A156035Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The practice group's MIPS final score for 2023 (Medicare payment program): 76.3 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).
Bills Medicare through one group practice
- Pih Health PhysiciansWhittier, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Isabel Chang among 7,571 anesthesiology physician records in California
Isabel Chang 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 2016, is newer than 80% of them.
- NPI issued2016 · 80% of these records are older, 17% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileYes · 64% of these records are
- Graduated2016 · median 2006 among the 4,868 with a school on file
- Record last updated2021 · 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
- Brandon Abeyta, MDOrange, CA 928681841291804
- Angela Azar, MDOrange, CA 928681164494274
- Jonathan Cohen, M.D.Orange, CA 928681184691867
- Ralph Da Graca, MDOrange, CA 928681861430456
- Scott Engwall, MDOrange, CA 928681851378392
- Sheree Hsu, M.D.Orange, CA 928681265499032
- Brian Levine, MDOrange, CA 928681629032891
- Ingrid Manz, CRNAOrange, CA 928681578501417
Common questions
What is Isabel Chang's NPI number?
Isabel Chang's National Provider Identifier (NPI) is 1821452293, issued on Apr 11, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Isabel Chang located?
The NPPES record lists a practice address at 333 City Blvd W Ste 2150, Orange, CA, 92868. Phone: (714) 456-5501. Providers update this record themselves, so call before visiting.
How can I verify Isabel Chang's license?
NPPES lists California license number A156035, 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.
What is Isabel Chang's MIPS final score?
The 2023 MIPS final score is 76.3 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.