I-Chow Hsu, M.D.
NPI 1144263039 · Radiation Oncology Physician · San Francisco, CA
Enrolled with Medicare as Practitioner - Radiation Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
I-Chow Hsu, M.D. is a Radiation Oncology Physician provider in San Francisco, CA (NPI 1144263039).
Provider details
- NPI number
- 1144263039
- Entity type
- Individual
- Primary specialty
- Radiation Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A51033 (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
20 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
900 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) |
|---|---|---|
| Obtaining Data Needed to Develop the Optimal Radiation Treatment, 3 Or More Treatment Areas Or Any Number of Treatment Areas Where Special Treatment Is Involved77290 | 99 | $95 |
| 3d Radiation Therapy Planning77295 | 94 | $259 |
| High Dose Radiation Therapy, 2-12 Channels77771 | 86 | $230 |
| Design and Construction of Simple Radiation Treatment Device77332 | 79 | $27 |
| Ultrasonic Guidance for Administration of Radiation Therapy76965 | 74 | $77 |
| Insertion of Needle Or Tube Into Prostate for Radiation Therapy55875 | 73 | $890 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 1 distinct drug on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Tamsulosin Hcl | 43 | 17 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$3,054 across 4 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
- 2006-06-14
- Last updated
- 2007-07-09
Frequently asked questions
- What is I-Chow Hsu's NPI number?
- I-Chow Hsu's National Provider Identifier (NPI) is 1144263039, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is I-Chow Hsu's specialty?
- I-Chow Hsu is listed in the NPPES registry with a primary specialty of Radiation Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is I-Chow Hsu located?
- I-Chow Hsu's practice location on file with NPPES is 1600 Divisadero St, San Francisco, CA 94115-3010.
- What is I-Chow Hsu's phone number?
- The practice phone number listed in the NPPES registry for I-Chow Hsu is (415) 353-7175.
- Does I-Chow Hsu accept Medicare?
- I-Chow Hsu is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is I-Chow Hsu's NPI active?
- Yes — I-Chow Hsu's NPI (1144263039) is active in the NPPES registry as of the last update on 2007-07-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.