Tara I-Hsin Chang, MD
Nephrology Physician · Stanford, CA
Tara I-Hsin Chang, MD is a nephrology physician with a practice address in Stanford, California, and NPI 1437166592, issued on Aug 2, 2006. Check the license (California A90280, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Tara I-Hsin Chang
- Credential
- MD
- Primary taxonomy
- Nephrology Physician 207RN0300X
- License number
- A90280 CA
Self-reported in NPPES; status is on the state search - Practice location
- 300 Pasteur Dr, Stanford, CA 94305
- Phone
- (650) 725-4000
- Enumerated
- Aug 2, 2006
- Record last updated
- Apr 17, 2024
- Medicare enrollment
- Enrolled (PECOS I20060823000224); accepts Medicare assignment
- Medical or professional school
- University Of Michigan Medical School, 2003
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest nephrology physician records → All 1,468 in California → Look up another NPI →
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 Tara I-Hsin Chang in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A90280Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
55% fewer Medicare Part D claims than the average nephrology physician in 2024
657 Medicare Part D claims for 104 beneficiaries, against an average of 1,465 among the 10,986 providers of this specialty who prescribed in Part D. Brand-name drugs were 22% of claims.
Most prescribed
- Losartan Potassium48 claims
- Amlodipine Besylate47 claims
- Carvedilol44 claims
- Farxiga42 claims
- Spironolactone33 claims
- Jardiance32 claims
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.
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: $8,413.33
15 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca UK Limited. The 8,230 providers of this specialty with any payment received $3,091.37 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.
One hospital affiliation
- Stanford Health CareSan Jose, CA · Acute Care Hospitals5 of 5 stars
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Tara I-Hsin Chang among 1,468 nephrology physician records in California
Tara I-Hsin Chang, MD is one of 1,468 nephrology physician records with a practice address in California. 88% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 10% of them.
- NPI issued2006 · 10% of these records are older, 48% newer
- In a Medicare fileYes · 88% of these records are
- In the CMS Doctors and Clinicians fileYes · 77% of these records are
- Graduated2003 · median 2001 among the 1,128 with a school on file
- Record last updated2024 · 62% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RN0300X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Nephrology Physician providers in California
There are 1,468 nephrology physician records in California.
All 1,468 in California → Every provider in Stanford → Nephrology Physician nationwide →
The 8 nephrology physician records with the nearest ZIP codes
- Shuchi Anand, MDStanford, CA 943051932238326
- Vivek Bhalla, MDStanford, CA 943051730118738
- Glenn Chertow, MDStanford, CA 943051407823875
- Enrica Fung, MDStanford, CA 943051437338951
- Richard Lafayette, M.D.Stanford, CA 943051922141951
- Fadi Lakkis, MDStanford, CA 943051417175910
- Maha Mohamed, MDStanford, CA 943051750336459
- Sankar Niranjan, MDStanford, CA 943051497752802
Common questions
What is Tara I-Hsin Chang, MD's NPI number?
Tara I-Hsin Chang, MD's National Provider Identifier (NPI) is 1437166592, issued on Aug 2, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Tara I-Hsin Chang, MD located?
The NPPES record lists a practice address at 300 Pasteur Dr, Stanford, CA, 94305. Phone: (650) 725-4000. Providers update this record themselves, so call before visiting.
How can I verify Tara I-Hsin Chang, MD's license?
NPPES lists California license number A90280, 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 Tara I-Hsin Chang, MD prescribe under Medicare Part D?
In 2024, Tara I-Hsin Chang, MD had 657 Medicare Part D claims for 104 beneficiaries; the average among nephrology physician prescribers was 1,465. Part D covers Medicare prescriptions only.
What is Tara I-Hsin 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.