Dr. Ben Chun-Ju Chiang, MD
- Medicare services, 2024
- 2,179
- Medicare patients, 2024
- 685
- Part D claims, 2024
- 121
- MIPS score, 2024
- 95
- Hospital affiliations
- 3
- Practice address
- 300 W Huntington Dr, Arcadia, CA 91007
- Practice phone
- Call (626) 898-8000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Chiang'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. Ben Chun-Ju Chiang is a hospitalist in Arcadia, California
Dr. Chiang practices at USC Arcadia Hospital in Arcadia, California, part of University of Southern California.
Dr. Chiang's NPI, 1073742193, was assigned on July 10, 2009. Dr. Chiang holds California license A105641.
- NPI
- 1073742193NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4789719634
- NPI enumeration date
- July 10, 2009
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (626) 898-8000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 51
- Medical school graduation
- 2001
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Ben Chun-Ju Chiang practices at USC Arcadia Hospital in Arcadia, California
Dr. Chiang's primary practice is USC Arcadia Hospital, at 300 W Huntington Dr, Arcadia, CA 91007 in Los Angeles County. The practice phone is (626) 898-8000.
- USC Arcadia Hospital300 W Huntington Dr, Arcadia, CA 91007 · Los Angeles CountyPhone(626) 898-8000
Source: Dmand AI Affiliation Data
Dr. Ben Chun-Ju Chiang is affiliated with 5 sites of care and 3 medical groups
Dr. Chiang's primary practice is USC Arcadia Hospital in Arcadia, California, part of University of Southern California. Dr. Chiang is also affiliated with Keck Hospital of USC. The medical group on file is Arcadia Hospitalist Medical Group. Dmand AI also links Dr. Chiang to 1 more hospital, 2 medical groups, 1 physician office and 1 other site, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Ben Chun-Ju Chiang's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Chiang practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| USC Arcadia Hospital | Available with a free account |
| +4 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Ben Chun-Ju Chiang is one of 3,186 hospitalists in California
Hospitalist is Dr. Chiang's primary specialty in the NPI Registry, under taxonomy code 208M00000X. Dr. Chiang is licensed in California.
Specialties and state licenses
- Hospitalist, CaliforniaPrimary
Hospitalists near Dr. Chiang
Counts of hospitalists 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. Ben Chun-Ju Chiang billed Medicare for 2,179 services in 2024
CMS data shows 2,179 Medicare services from Dr. Chiang across 4 procedure codes in 2024, for 685 Medicare patients. Medicare paid $216,301 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Chiang's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1,5392024: 2,17942%
Dr. Chiang compared with the California median for hospitalists, 2024
- Dr. Chiang
- California median
- Medicare services
- 2,179vs 4305.1 times
- Medicare patients
- 685vs 2013.4 times
- Part D claims
- 15vs 6978% below
Medians across 2,991 hospitalists in California with Dmand AI profiles that report each measure.
Dr. Chiang's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Ben Chun-Ju Chiang treated 685 Medicare patients in 2024, average age 78
CMS counts 685 Medicare patients who saw Dr. Chiang in 2024. The largest group is 75 to 84, with 233 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 60% are also on Medicaid. Their average risk score is 2.64, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Chiang's median patient age at 70, with 53% women.
Dr. Chiang's Medicare patients by age, 2024
Dr. Chiang's Medicare patients by sex, 2024
- Women38857%
- Men29743%
Chronic conditions among Dr. Chiang's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis64%
- Chronic kidney disease57%
- Diabetes57%
- Ischemic heart disease50%
- Heart failure47%
- Atrial fibrillation36%
Share of Medicare patients with each condition. A patient can have several.
Dr. Chiang's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 70
Patient panel by sex, all payers
- Women53%
- Men47%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Ben Chun-Ju Chiang wrote 121 Medicare Part D claims in 2024
In 2024, Dr. Chiang wrote 121 Medicare Part D claims for 53 patients. 93% of them were for generic drugs. CMS names the drug for 15 of them, across 1 drug with 11 or more claims each, at $95 in total drug cost. In 2021, CMS named 14 claims across 1 drug.
Dr. Chiang's Part D claims by kind of drug, 2024
- Generic112 claims93%
- Brand-name and other9 claims7%
Dr. Chiang's most prescribed drugs by claims, 2022
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Chiang's Part D claims, 2024
- Antibiotics25%30 of 121 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2021 to 2022
- 2021
- 2022
- Claims for drugs CMS names
- 2021: 142022: 157%
Drugs named by CMS: 1 in 2022, 1 in 2021.
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
Dr. Ben Chun-Ju Chiang scored 95 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 95 out of 100 for Dr. Chiang for performance year 2024, reported as part of a group. Dr. Chiang accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Chiang's MIPS scores, performance year 2024
- 95of 100Final score
- 40of 100Improvement Activities
- 69of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Ben Chun-Ju Chiang received $177 in industry payments from 2016 to 2022
CMS Open Payments shows 10 general payments to Dr. Chiang from 4 drug and device companies from 2016 to 2022. Food and beverage make up the largest share, 100% of the total. Bristol-Myers Squibb Company paid the most, $79.
General payments to Dr. Chiang by program year, 2016 to 2022
Companies that paid Dr. Chiang the most, 2016 to 2022
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Ben Chun-Ju Chiang'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 DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| 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) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| 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. Ben Chun-Ju Chiang
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. Ben Chun-Ju Chiang's NPI number?
Dr. Ben Chun-Ju Chiang's NPI number is 1073742193. It was assigned on July 10, 2009, and it is active in the NPI Registry.
What kind of doctor is Dr. Ben Chun-Ju Chiang?
Dr. Ben Chun-Ju Chiang is a hospitalist in Arcadia, California. The primary specialty in the NPI Registry is Hospitalist Physician (taxonomy code 208M00000X).
Where does Dr. Ben Chun-Ju Chiang practice?
Dr. Chiang practices at 300 W Huntington Dr, Arcadia, CA 91007. Dr. Chiang's primary practice is USC Arcadia Hospital in Arcadia, California, part of University of Southern California. Dmand AI also links Dr. Chiang to 1 hospital, 2 medical groups, 1 physician office and 1 other site.
What is Dr. Ben Chun-Ju Chiang's office phone number?
The practice phone on file for Dr. Chiang is (626) 898-8000.
What is Dr. Ben Chun-Ju Chiang's medical license number?
Dr. Chiang holds California license A105641.
Which hospitals is Dr. Ben Chun-Ju Chiang affiliated with?
Dr. Chiang practices at USC Arcadia Hospital in Arcadia, California. Dr. Chiang is also affiliated with Keck Hospital of USC. Dmand AI links Dr. Chiang to 1 more hospital.
What medical group is Dr. Ben Chun-Ju Chiang part of?
Dr. Chiang is linked to Arcadia Hospitalist Medical Group. Dmand AI links Dr. Chiang to 2 more medical groups.
Does Dr. Ben Chun-Ju Chiang accept Medicare?
Yes. CMS data shows Dr. Chiang billed Medicare for 2,179 services in 2024, and Dr. Chiang accepts Medicare assignment.
What is Dr. Ben Chun-Ju Chiang's MIPS score?
Dr. Chiang's MIPS final score for performance year 2024 is 95 out of 100, reported as part of a group.
How many Medicare patients does Dr. Ben Chun-Ju Chiang see?
CMS counts 685 Medicare patients who saw Dr. Chiang in 2024, with an average age of 78.
Show 4 more questionsShow fewer questions
What services does Dr. Ben Chun-Ju Chiang bill to Medicare?
In 2024, Dr. Chiang's most billed Medicare services were hospital inpatient care (99233), hospital inpatient care (99223) and hospital inpatient care (99239).
What drugs does Dr. Ben Chun-Ju Chiang prescribe most?
In 2022 Medicare Part D data, Dr. Chiang's most prescribed drugs by claims were Amoxicillin-Clavulanate Potass.
Has Dr. Ben Chun-Ju Chiang received payments from drug or device companies?
CMS Open Payments shows $177 in general payments to Dr. Chiang from 4 companies from 2016 to 2022. The largest total came from Bristol-Myers Squibb Company.
How long has Dr. Ben Chun-Ju Chiang been practicing?
Dr. Chiang graduated from medical school in 2001, 25 years ago.
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