Ben Chun-Ju Chiang, M.D.
Hospitalist Physician · Hacienda Heights, CA
Ben Chun-Ju Chiang, M.D. is a hospitalist physician with a practice address in Hacienda Heights, California, and NPI 1073742193, issued on Jul 10, 2009. Check the license (California A105641, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Ben Chun-Ju Chiang
- Credential
- M.D.
- Primary taxonomy
- Hospitalist Physician 208M00000X
- License number
- A105641 CA
Self-reported in NPPES; status is on the state search - Practice location
- 3120 S Hacienda Blvd Ste 103, Hacienda Heights, CA 91745
- Phone
- (626) 855-1091
- Enumerated
- Jul 10, 2009
- Record last updated
- Mar 17, 2014 (not updated in 12 years: call before relying on the address or phone)
- Fax
- (626) 369-5988
- Medicare enrollment
- Enrolled (PECOS I20100317000134); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest hospitalist physician records → All 3,099 in California → Look up another NPI →
Verify Ben Chun-Ju Chiang in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A105641Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
77% fewer Medicare Part D claims than the average hospitalist physician in 2024
121 Medicare Part D claims for 53 beneficiaries, against an average of 521 among the 21,613 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): 81.9 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).
Bills Medicare through one group practice
- Arcadia Hospitalist Medical Group IncArcadia, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ben Chun-Ju Chiang among 3,099 hospitalist physician records in California
Ben Chun-Ju Chiang, M.D. is one of 3,099 hospitalist physician records with a practice address in California. 90% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 39% of them.
- NPI issued2009 · 39% of these records are older, 56% newer
- In a Medicare fileYes · 90% of these records are
- In the CMS Doctors and Clinicians fileYes · 81% of these records are
- Graduated2001 · median 2010 among the 2,505 with a school on file
- Record last updated2014 · 49% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208M00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hospitalist Physician providers in California
There are 3,099 hospitalist physician records in California.
All 3,099 in California → Every provider in Hacienda Heights → Hospitalist Physician nationwide →
The 8 hospitalist physician records with the nearest ZIP codes
- Manak Sethi, M.D.Rancho Cucamonga, CA 917291881806818
- Hsin-Chen LiuMontclair, CA 917631609353135
- Linna Kho, M.DDiamond Bar, CA 917651881854941
- Sumati Bavisetty, M.D.Pomona, CA 917671619234960
- Apollo Gulle, M.D.Pomona, CA 917671831341486
- Fahad Khan, M.D.Pomona, CA 917671871938191
- Shauna McGinnis, D.O.Pomona, CA 917671275878514
- Francis Mendez Munduate, M.D.Pomona, CA 917671659614121
Common questions
What is Ben Chun-Ju Chiang, M.D.'s NPI number?
Ben Chun-Ju Chiang, M.D.'s National Provider Identifier (NPI) is 1073742193, issued on Jul 10, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Ben Chun-Ju Chiang, M.D. located?
The NPPES record lists a practice address at 3120 S Hacienda Blvd Ste 103, Hacienda Heights, CA, 91745. Phone: (626) 855-1091. Providers update this record themselves, so call before visiting.
How can I verify Ben Chun-Ju Chiang, M.D.'s license?
NPPES lists California license number A105641, 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 Ben Chun-Ju Chiang, M.D. prescribe under Medicare Part D?
In 2024, Ben Chun-Ju Chiang, M.D. had 121 Medicare Part D claims for 53 beneficiaries; the average among hospitalist physician prescribers was 521. Part D covers Medicare prescriptions only.
What is Ben Chun-Ju Chiang, M.D.'s MIPS final score?
The 2023 MIPS final score is 81.9 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.