Chun Hsu, MD
NPI 1669597746 · Gastroenterology Physician · Torrance, CA
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Chun Hsu, MD is a Gastroenterology Physician provider in Torrance, CA (NPI 1669597746).
Provider details
- NPI number
- 1669597746
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- C159011 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
406 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Pathology Examination of Tissue Using a Microscope, Intermediate Complexity88305 | 104 | $42 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 66 | $123 |
| Removal of Polyps Or Growths of Large Bowel Using an Endoscope With Mechanical Snare45385 | 54 | $253 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 48 | $138 |
| Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43239 | 45 | $98 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 11 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Omeprazole | 119 | 49 |
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Gavilyte-G | 105 | 100 |
| Pantoprazole Sodium | 36 | 12 |
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Peg-3350 and Electrolytes | 28 | 28 |
| Linaclotidebrand: Linzess | 26 | — |
| Ursodiol | 22 | — |
| Lansoprazole | 16 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$229 across 11 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-03-20
- Last updated
- 2024-09-26
- Certified
- 2024-09-26
Frequently asked questions
- What is Chun Hsu's NPI number?
- Chun Hsu's National Provider Identifier (NPI) is 1669597746, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Chun Hsu's specialty?
- Chun Hsu is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Chun Hsu located?
- Chun Hsu's practice location on file with NPPES is 23451 Madison St Ste 290, Torrance, CA 90505-4737.
- What is Chun Hsu's phone number?
- The practice phone number listed in the NPPES registry for Chun Hsu is (310) 375-1246.
- Does Chun Hsu accept Medicare?
- Chun Hsu is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Chun Hsu's NPI active?
- Yes — Chun Hsu's NPI (1669597746) is active in the NPPES registry as of the last update on 2024-09-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.