Geraldine Chang, M.D.
Diagnostic Radiology Physician · Northridge, CA
Geraldine Chang, M.D. is a diagnostic radiology physician with a practice address in Northridge, California, and NPI 1831486539, issued on Jun 30, 2011. Check the license (California A122612, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Geraldine Chang
- Credential
- M.D.
- Primary taxonomy
- Diagnostic Radiology Physician 2085R0202X
- License number
- A122612 CA
Self-reported in NPPES; status is on the state search - Practice location
- 18436 Roscoe Blvd, Northridge, CA 91325
- Phone
- (818) 435-1400
- Enumerated
- Jun 30, 2011
- Record last updated
- Dec 5, 2017 (not updated in 9 years: call before relying on the address or phone)
- Medicaid ID
- 1831486539 CA
- Medicare enrollment
- Enrolled (PECOS I20160718001545); accepts Medicare assignment
- Medical or professional school
- University Of California, San Diego School Of Medicine, 2011
- Entity
- Type 1 · individual
8 nearest diagnostic radiology physician records → All 4,500 in California → Look up another NPI →
Also registered at 18436 Roscoe Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Tzyy Shyang Chao, M.D.Diagnostic Radiology Physician1801213806
- Jeremy Chin, M.D.Diagnostic Radiology Physician1700229994
- Kellie Curtis, MDDiagnostic Radiology Physician1104985845
Verify Geraldine Chang in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A122612Check 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): 91.3 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 8 group practices
- Beverly Radiology Medical Group IIIToluca Lake, CA
- Cedars-Sinai Medical Care FoundationSanta Monica, CA
- Desert Advanced Imaging Medical CenterLa Canada, CA
- Diagnostic Radiological ImagingLa Canada, CA
- Kern Radiology Medical Group IncBakersfield, CA
- Modesto Advanced Diagnostic Imaging Medical CenterModesto, CA
- Norcal ImagingFremont, CA
- Stockton Diagnostic ImagingStockton, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Geraldine Chang among 4,500 diagnostic radiology physician records in California
Geraldine Chang, M.D. is one of 4,500 diagnostic radiology physician records with a practice address in California. 74% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2011, is newer than 70% of them.
- NPI issued2011 · 70% of these records are older, 27% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 70% of these records are
- Graduated2011 · median 2004 among the 3,130 with a school on file
- Record last updated2017 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085R0202X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Diagnostic Radiology Physician providers in California
There are 4,500 diagnostic radiology physician records in California.
All 4,500 in California → Every provider in Northridge → Diagnostic Radiology Physician nationwide →
The 8 diagnostic radiology physician records with the nearest ZIP codes
- Christopher Bedford, M.D.Northridge, CA 913251255692935
- Tzyy Shyang Chao, M.D.Northridge, CA 913251801213806
- Jeremy Chin, M.D.Northridge, CA 913251700229994
- Kellie Curtis, MDNorthridge, CA 913251104985845
- Ryan FrankeNorthridge, CA 913251295093375
- Varand Ghazikhanian, MDNorthridge, CA 913251578759395
- Michael Hepfer, MDNorthridge, CA 913251578578266
- Rajiv Pai, M.D.Northridge, CA 913251760640742
Common questions
What is Geraldine Chang, M.D.'s NPI number?
Geraldine Chang, M.D.'s National Provider Identifier (NPI) is 1831486539, issued on Jun 30, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Geraldine Chang, M.D. located?
The NPPES record lists a practice address at 18436 Roscoe Blvd, Northridge, CA, 91325. Phone: (818) 435-1400. Providers update this record themselves, so call before visiting.
How can I verify Geraldine Chang, M.D.'s license?
NPPES lists California license number A122612, 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 Geraldine Chang, M.D.'s MIPS final score?
The 2023 MIPS final score is 91.3 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.