Chiachen Hsu, MD
Physical Medicine & Rehabilitation Physician · Oakland, CA
Chiachen Hsu, MD is a physical medicine & rehabilitation physician with a practice address in Oakland, California, and NPI 1215015003, issued on Nov 1, 2006. Check the license (California A90444, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Chiachen Hsu
- Credential
- MD
- Primary taxonomy
- Physical Medicine & Rehabilitation Physician 208100000X
- License number
- A90444 CA
Self-reported in NPPES; status is on the state search - Practice location
- 275 W Macarthur Blvd, Oakland, CA 94611
- Phone
- (510) 752-1000
- Enumerated
- Nov 1, 2006
- Record last updated
- Dec 20, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicaid ID
- 00A904440 CA
- Medicare enrollment
- Enrolled (PECOS I20050909000468); accepts Medicare assignment
- Medical or professional school
- Indiana University School Of Medicine, 1999
- Entity
- Type 1 · individual
Also registered at 275 W Macarthur Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
- David Aaronson, MDUrology Physician1215053129
- Paul-Andre Abboud, M.D.Emergency Medicine Physician1710065503
- Brittany Abeldt, MDPsychiatry Physician1982353884
- Bilal Abu-Alrub, DOStudent in an Organized Health Care Education/Training Program1609760768
- Walter Acuna, MDInternal Medicine Physician1972655108
- Brett Adams, MDStudent in an Organized Health Care Education/Training Program1841731098
Verify Chiachen Hsu in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A90444Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
93% fewer Medicare Part D claims than the average physical medicine & rehabilitation physician in 2024
51 Medicare Part D claims for 40 beneficiaries, against an average of 727 among the 7,448 providers of this specialty who prescribed in Part D.
Most prescribed
- Lorazepam11 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.
Bills Medicare through one group practice
- Permanente Medical Group IncRichmond, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Physical Medicine & Rehabilitation Physician providers in California
There are 1,549 physical medicine & rehabilitation physician records in California.
Other physical medicine & rehabilitation physician records in California
- Payandeh Abadee, M.D.San Pedro, CA1376557793
- Sherif Abdalla, MDFresno, CA1750563128
- Alexan Abdel-Malek, MDSylmar, CA1457410060
- Alicia Abels, M.D.Folsom, CA1336234442
- Gary Abrams, M.D.San Francisco, CA1346213246
- Michael Acord, MDCosta Mesa, CA1205903101
- Hugh Adams, M.D.Long Beach, CA1962436774
- Lefkos Aftonomos, M.D.San Mateo, CA1972544088
- Haleh Agdassi, M.D.Palo Alto, CA1477664159
- Reena Agrawal, MDPalo Alto, CA1720257520
Common questions
What is Chiachen Hsu, MD's NPI number?
Chiachen Hsu, MD's National Provider Identifier (NPI) is 1215015003, issued on Nov 1, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Chiachen Hsu, MD located?
The NPPES record lists a practice address at 275 W Macarthur Blvd, Oakland, CA, 94611. Phone: (510) 752-1000. Providers update this record themselves, so call before visiting.
How can I verify Chiachen Hsu, MD's license?
NPPES lists California license number A90444, 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 Chiachen Hsu, MD prescribe under Medicare Part D?
In 2024, Chiachen Hsu, MD had 51 Medicare Part D claims for 40 beneficiaries; the average among physical medicine & rehabilitation physician prescribers was 727. Part D covers Medicare prescriptions only.
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.