Chun Xiao Hsu, MD
Gastroenterology Physician · Torrance, CA
Chun Xiao Hsu, MD is a gastroenterology physician with a practice address in Torrance, California, and NPI 1669597746, issued on Mar 20, 2007. Check the license (California C159011, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Chun Xiao Hsu
- Credential
- MD
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- C159011 CA
Self-reported in NPPES; status is on the state search - Practice location
- 23451 Madison St Ste 290, Torrance, CA 90505
- Phone
- (310) 375-1246
- Enumerated
- Mar 20, 2007
- Record last updated
- Sep 26, 2024
- Fax
- (310) 375-0981
- Medicare enrollment
- Enrolled (PECOS I20190114001097); accepts Medicare assignment
- Medical or professional school
- Tufts University School Of Medicine, 2001
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 2,140 in California → Look up another NPI →
Also registered at 23451 Madison St Ste 290
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Pamela Almario, NPNurse Practitioner1780270595
- Melissa Mae Alvaro, FNP-BCFamily Nurse Practitioner1861371593
- Michael Bernstein, MDGastroenterology Physician1306665849
- David Chung, MDGastroenterology Physician1851362974
- Jocelyn Flores, FNPFamily Nurse Practitioner1407663057
- Thai Ha, MDGastroenterology Physician1174512172
Verify Chun Xiao Hsu in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license C159011Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
42% fewer Medicare Part D claims than the average gastroenterology physician in 2024
467 Medicare Part D claims for 221 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 15% of claims.
Most prescribed
- Omeprazole119 claims
- Gavilyte-G105 claims
- Pantoprazole Sodium36 claims
- Peg-3350 And Electrolytes28 claims
- Linzess26 claims
- Ursodiol22 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.
Industry payments in 2024: $228.69
11 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 13,350 providers of this specialty with any payment received $5,015.95 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Digestive Care ConsultantsTorrance, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Chun Xiao Hsu among 2,140 gastroenterology physician records in California
Chun Xiao Hsu, MD is one of 2,140 gastroenterology physician records with a practice address in California. 83% 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 52% of them.
- NPI issued2007 · 52% of these records are older, 37% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 72% of these records are
- Graduated2001 · median 2002 among the 1,538 with a school on file
- Record last updated2024 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0100X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gastroenterology Physician providers in California
There are 2,140 gastroenterology physician records in California.
All 2,140 in California → Every provider in Torrance → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Susanna Chan, M.D.Torrance, CA 905051497794283
- David Chung, MDTorrance, CA 905051851362974
- Karl Fukunaga, MDTorrance, CA 905051487644613
- Thai Ha, MDTorrance, CA 905051174512172
- Kenneth Holt, MDTorrance, CA 905051932198108
- Tonny Lee, M.D.Torrance, CA 905051639118748
- Masaharu Osato, M.D.Torrance, CA 905051265470280
- Norman Panitch, MDTorrance, CA 905051306881487
Common questions
What is Chun Xiao Hsu, MD's NPI number?
Chun Xiao Hsu, MD's National Provider Identifier (NPI) is 1669597746, issued on Mar 20, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Chun Xiao Hsu, MD located?
The NPPES record lists a practice address at 23451 Madison St Ste 290, Torrance, CA, 90505. Phone: (310) 375-1246. Providers update this record themselves, so call before visiting.
How can I verify Chun Xiao Hsu, MD's license?
NPPES lists California license number C159011, 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 Chun Xiao Hsu, MD prescribe under Medicare Part D?
In 2024, Chun Xiao Hsu, MD had 467 Medicare Part D claims for 221 beneficiaries; the average among gastroenterology physician prescribers was 811. 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.