Dr. John Jone-Jiun Tzeng, MD, PhD
- Medicare services, 2023
- 1,097
- Part D claims, 2024
- 44
- Hospital affiliations
- 1
- Insurance carriers
- 4
- State licenses
- 2
- Practice address
- 2051 Marengo St, Room C2K100, Los Angeles, CA 90033
- Practice phone
- Call (323) 226-2800
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Tzeng's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. John Jone-Jiun Tzeng is a cardiologist in Los Angeles, California
Dr. Tzeng practices at Los Angeles General Medical Center in Los Angeles, California, part of County of Los Angeles.
Dr. Tzeng's NPI, 1225062060, was assigned on July 10, 2006. Dr. Tzeng graduated from China Medicine University in 1983. Dr. Tzeng holds California license A53439.
- NPI
- 1225062060NPI Registry (opens in a new tab)
- NPI enumeration date
- July 10, 2006
- NPI status
- Active
- Practice phone
- (323) 226-2800
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 69
- Medical school graduation
- 1983
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. John Jone-Jiun Tzeng practices at Los Angeles General Medical Center in Los Angeles, California
Dr. Tzeng's primary practice is Los Angeles General Medical Center, at 2051 Marengo St, Room C2K100, Los Angeles, CA 90033 in Los Angeles County. The practice phone is (323) 226-2800.
- Los Angeles General Medical Center2051 Marengo St, Room C2K100, Los Angeles, CA 90033 · Los Angeles CountyPhone(323) 226-2800
Source: Dmand AI Affiliation Data
Dr. John Jone-Jiun Tzeng is affiliated with 1 site of care
Dr. Tzeng's primary practice is Los Angeles General Medical Center in Los Angeles, California, part of County of Los Angeles. Dr. Tzeng's employer is on file too: a hospital.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. John Jone-Jiun Tzeng's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Tzeng practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Los Angeles General Medical Center | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. John Jone-Jiun Tzeng is one of 2,375 cardiologists in California
Cardiovascular disease is Dr. Tzeng's primary specialty in the NPI Registry, under taxonomy code 207RC0000X. Dmand AI has Dr. Tzeng's licenses on file in 2 states: California and District of Columbia.
Specialties and state licenses
- Cardiovascular disease, CaliforniaPrimary
- District of Columbia license
Clinical focus
Dmand AI lists atrial fibrillation and flutter, cerebrovascular disease, coronary artery disease, heart valve disorders and sick sinus syndrome among the conditions Dr. Tzeng treats.
Cardiologists near Dr. Tzeng
Counts of cardiologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. John Jone-Jiun Tzeng billed Medicare for 1,097 services in 2023
CMS data shows 1,097 Medicare services from Dr. Tzeng across 13 procedure codes in 2023. Medicare paid $111,697 for them. Every service was in an office.
Dr. Tzeng's Medicare services by type, 2022 to 2023
- 2022
- 2023
- Tests and treatments
- 2022: 2,3272023: 56676%
- Office and hospital visits
- 2022: 1,2582023: 32174%
- Other services
- 2022: 1,0592023: 17583%
- Imaging
- 2022: 2142023: 3584%
- Drugs given in the office
- 2022: 1002023: 0100%
Dr. Tzeng compared with the California median for cardiologists, 2023
- Dr. Tzeng
- California median
- Medicare services
- 1,097vs 1,56030% below
- Part D claims
- 3,683vs 1,4102.6 times
Medians across 2,237 cardiologists in California with Dmand AI profiles that report each measure.
Dr. Tzeng's most billed Medicare procedure codes, 2023
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Tzeng?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Tzeng and other cardiologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. John Jone-Jiun Tzeng's patients have a median age of 82
Across all payers, Dmand AI patient panel data puts Dr. Tzeng's median patient age at 82, with 50% women.
Dr. Tzeng's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 82
Patient panel by sex, all payers
- Women50%
- Men50%
Source: Dmand AI Patient Panel Data
Dr. John Jone-Jiun Tzeng wrote 44 Medicare Part D claims in 2024
In 2024, Dr. Tzeng wrote 44 Medicare Part D claims for 22 patients. 91% of them were for generic drugs. They cover 66 drugs, with $161,471 in total drug cost. In 2022, CMS named 7,140 claims across 97 drugs.
Dr. Tzeng's Part D claims by kind of drug, 2024
- Generic40 claims91%
- Brand-name and other4 claims9%
Dr. Tzeng's most prescribed drugs by claims, 2023
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2022 to 2023
- 2022
- 2023
- Claims for drugs CMS names
- 2022: 7,1402023: 3,68348%
Drugs named by CMS: 66 in 2023, 97 in 2022.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
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Dr. John Jone-Jiun Tzeng has 1 award and honors on record
Dmand AI lists 1 award for Dr. Tzeng.
Awards and honors for Dr. Tzeng
- Undated
- ACC Fellow
Source: Dmand AI Professional Profile Data
Dr. John Jone-Jiun Tzeng graduated from China Medicine University
Dr. Tzeng graduated from China Medicine University in 1983. Dr. Tzeng is a member of ACC.
- Medical school
Source: Dmand AI Professional Profile Data
Dr. John Jone-Jiun Tzeng accepts plans from 4 insurance carriers
Dr. Tzeng is in network with 4 carriers, including Blue Cross Blue Shield of Michigan, Blue Cross Blue Shield of Massachusetts and HCSC. Medicare plans come from the most carriers, 4. Check the plan with the practice before a visit.
- Blue Cross Blue Shield of Michigan
- Blue Cross Blue Shield of Massachusetts
- HCSC
- Regence Health Plans
Plan types Dr. Tzeng accepts, by number of carriers
- Medicare4
- PPO4
- HMO1
- POS1
Source: Dmand AI Insurance Network Data
Sources for Dr. John Jone-Jiun Tzeng's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| Awards and committee roles | Dmand AI Professional Profile Data |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. John Jone-Jiun Tzeng
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. John Jone-Jiun Tzeng's NPI number?
Dr. John Jone-Jiun Tzeng's NPI number is 1225062060. It was assigned on July 10, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. John Jone-Jiun Tzeng?
Dr. John Jone-Jiun Tzeng is a cardiologist in Los Angeles, California. The primary specialty in the NPI Registry is Cardiovascular Disease Physician (taxonomy code 207RC0000X).
Where does Dr. John Jone-Jiun Tzeng practice?
Dr. Tzeng practices at 2051 Marengo St, Room C2K100, Los Angeles, CA 90033. Dr. Tzeng's primary practice is Los Angeles General Medical Center in Los Angeles, California, part of County of Los Angeles.
What is Dr. John Jone-Jiun Tzeng's office phone number?
The practice phone on file for Dr. Tzeng is (323) 226-2800.
What is Dr. John Jone-Jiun Tzeng's medical license number?
Dr. Tzeng holds California license A53439, one of the licenses on file in 2 states.
Which states has Dr. John Jone-Jiun Tzeng been licensed in?
Dmand AI has state licenses on file for Dr. Tzeng in California (1994 to 2026) and District of Columbia (2004 to 2008).
Which hospitals is Dr. John Jone-Jiun Tzeng affiliated with?
Dr. Tzeng practices at Los Angeles General Medical Center in Los Angeles, California.
Does Dr. John Jone-Jiun Tzeng accept Medicare?
Yes. CMS data shows Dr. Tzeng billed Medicare for 1,097 services in 2023.
What services does Dr. John Jone-Jiun Tzeng bill to Medicare?
In 2023, Dr. Tzeng's most billed Medicare services were office visit, established patient (99214), heart test or procedure (93000) and medical supplies or transport (A9505).
Where did Dr. John Jone-Jiun Tzeng go to medical school?
Dr. Tzeng graduated from China Medicine University in 1983.
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What drugs does Dr. John Jone-Jiun Tzeng prescribe most?
In 2023 Medicare Part D data, Dr. Tzeng's most prescribed drugs by claims were Clopidogrel, Nitroglycerin and Amlodipine Besylate.
How long has Dr. John Jone-Jiun Tzeng been practicing?
Dr. Tzeng graduated from medical school in 1983, 43 years ago.
What insurance does Dr. John Jone-Jiun Tzeng accept?
Dr. Tzeng is in network with 4 carriers, including Blue Cross Blue Shield of Michigan, Blue Cross Blue Shield of Massachusetts and HCSC. Medicare plans come from the most carriers, 4. Check the plan with the practice before a visit.
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