Tzu-Jen Tzao, M.D.
Emergency Medicine Physician · Los Angeles, CA
Tzu-Jen Tzao, M.D. is an emergency medicine physician with a practice address in Los Angeles, California, and NPI 1548453814, issued on Aug 21, 2007. Check the license (California A96855, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Tzu-Jen Tzao
- Credential
- M.D.
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- A96855 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1680 E 120TH St, Los Angeles, CA 90059
- Phone
- (424) 338-8144
- Enumerated
- Aug 21, 2007
- Record last updated
- Jun 18, 2025
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 7,751 in California → Look up another NPI →
Also registered at 1680 E 120TH St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Adedeji Adefeso, MDGeneral Practice Physician1710729223
- Ijeoma AkannoAdult Psychiatric/Mental Health Registered Nurse1750953014
- Jessie Alvarez, PMHNP-BCNurse Practitioner1699510719
- Robert Andalon, MDGeneral Practice Physician1285321182
- Abdelkader AwadStudent in an Organized Health Care Education/Training Program1649154782
- Mercy Azubuko-UdahStudent in an Organized Health Care Education/Training Program1114651981
Verify Tzu-Jen Tzao in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A96855Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
74% fewer Medicare Part D claims than the average emergency medicine physician in 2024
59 Medicare Part D claims for 34 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D.
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): 100 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).
Tzu-Jen Tzao among 7,751 emergency medicine physician records in California
Tzu-Jen Tzao, M.D. is one of 7,751 emergency medicine physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 40% of them.
- NPI issued2007 · 40% of these records are older, 50% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileNo · 59% of these records are
- Record last updated2025 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Emergency Medicine Physician providers in California
There are 7,751 emergency medicine physician records in California.
All 7,751 in California → Every provider in Los Angeles → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Chat Dang, M.D.Los Angeles, CA 900591447336557
- Amit Kachalia, M.D.Los Angeles, CA 900591548346984
- Jacques Williams-Pascal, MDLos Angeles, CA 900591831238534
- Mark Woods, M.D.Los Angeles, CA 900591689713851
- Andrew Kassinove, MDLos Angeles, CA 900571194761486
- Sanjeev Seth, MDLos Angeles, CA 900571497706709
- Paul Bronston, MDLos Angeles, CA 900671912948472
- Anna Cheh, M.D.Los Angeles, CA 900671366471443
Common questions
What is Tzu-Jen Tzao, M.D.'s NPI number?
Tzu-Jen Tzao, M.D.'s National Provider Identifier (NPI) is 1548453814, issued on Aug 21, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Tzu-Jen Tzao, M.D. located?
The NPPES record lists a practice address at 1680 E 120TH St, Los Angeles, CA, 90059. Phone: (424) 338-8144. Providers update this record themselves, so call before visiting.
How can I verify Tzu-Jen Tzao, M.D.'s license?
NPPES lists California license number A96855, 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 Tzu-Jen Tzao, M.D. prescribe under Medicare Part D?
In 2024, Tzu-Jen Tzao, M.D. had 59 Medicare Part D claims for 34 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.
What is Tzu-Jen Tzao, M.D.'s MIPS final score?
The 2023 MIPS final score is 100 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.