Stephanie Tzu-Ying Chang, MD
Diagnostic Radiology Physician · Stanford, CA
Stephanie Tzu-Ying Chang, MD is a diagnostic radiology physician with a practice address in Stanford, California, and NPI 1336427590, issued on Jul 21, 2011. Check the license (California A121641, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Stephanie Tzu-Ying Chang
- Credential
- MD
- Primary taxonomy
- Diagnostic Radiology Physician 2085R0202X
- License numbers
- A121641 CA
2011013277 MO
Self-reported in NPPES; status is on the state search - Practice location
- 300 Pasteur Dr, Stanford, CA 94305
- Phone
- (650) 723-4000
- Enumerated
- Jul 21, 2011
- Record last updated
- Apr 5, 2024
- Entity
- Type 1 · individual
Also registered at 300 Pasteur Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Stephanie Tzu-Ying Chang in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A121641Check 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): 76.5 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: $31.38
1 payment: food and beverage; the largest payer was Organogenesis Inc. The 8,048 providers of this specialty with any payment received $2,488.38 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.
235 diagnostic radiology physician records list a practice address in Stanford
They are 235 of the 5,606 NPPES records with a practice address in Stanford, and 4,500 diagnostic radiology physician records in California.
All 235 in Stanford → All 4,500 in California → Every provider in Stanford →
Other diagnostic radiology physician records in California
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- Rashed AbdelaalRiverside, CA1518726090
- Ahmed Abdelhalim, MDRiverside, CA1275162927
- Fatemeh Abdollahi Mofakham, MDLos Angeles, CA1659652915
- Bennett Abe, MDVisalia, CA1184731283
- Stephen Abedon, M.D.Daly City, CA1689628687
- Richard Abello, M.D.La Jolla, CA1245205996
Common questions
What is Stephanie Tzu-Ying Chang, MD's NPI number?
Stephanie Tzu-Ying Chang, MD's National Provider Identifier (NPI) is 1336427590, issued on Jul 21, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Stephanie Tzu-Ying Chang, MD located?
The NPPES record lists a practice address at 300 Pasteur Dr, Stanford, CA, 94305. Phone: (650) 723-4000. Providers update this record themselves, so call before visiting.
How can I verify Stephanie Tzu-Ying Chang, MD's license?
NPPES lists California license number A121641, 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 Stephanie Tzu-Ying Chang, MD's MIPS final score?
The 2023 MIPS final score is 76.5 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.