DR. I-CHOW JOE HSU M.D.
NPI 1144263039
Radiology - Radiation Oncology in San Francisco, CA

Q: What is I-chow Hsu's NPI number?

The NPI number for I-chow Hsu is 1144263039. It was assigned to this individual provider in the NPPES registry on June 14, 2006.

Q: What is I-chow Hsu's specialty?

The primary specialty registered for this NPI is Radiology, specializing in Radiation Oncology, with taxonomy code 2085R0001X.

Q: When was this NPI record last updated?

The NPPES record for I-chow Hsu was last updated on July 9, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since June 14, 2006PECOS EnrolledAccepts Medicare Assignment

74.46/100

CMS Quality Rating

1600 DIVISADERO ST, SAN FRANCISCO, CA 94115(415) 353-7175(415) 353-9883 Get Directions Write a Review

NPPES record last updated: July 9, 2007. Verified against the NPPES registry weekly; last sync: November 01, 2026.

On this page

About Dr. I-chow Joe Hsu M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. I-CHOW JOE HSU M.D. (NPI 1144263039) is an individual radiation oncology provider in San Francisco, California, licensed in California (A51033) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS and is a graduate of Johns Hopkins University School Of Medicine (1991).

NPPES Registry Identity

NPI1144263039

Entity TypeIndividualMale

Primary Taxonomy2085R0001X

Provider Legal NameDR. I-CHOW JOE HSUCredential: M.D.

Location Address1600 DIVISADERO STSan Francisco, CA 94115-3010

Mailing Address1635 Divisadero Street, Suite 625, Box 1821San Francisco, CA 94143-0001 · (415) 476-4029 · Fax (415) 476-4150

Phone(415) 353-7175

Fax(415) 353-9883

Sole ProprietorNo

Medical School CMSJohns Hopkins University School Of MedicineGraduated 1991

Enumeration DateJune 14, 2006

Last NPPES UpdateJuly 9, 2007

✔ NPI 1144263039 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyRadiology · Radiation OncologyAllopathic & Osteopathic Physicians

Taxonomy Code2085R0001X

License✔ Licensed in CA · A51033

Definition

A radiologist who deals with the therapeutic applications of radiant energy and its modifiers and the study and management of disease, especially malignant tumors.

1600 DIVISADERO ST, San Francisco, CA 94115

Open in Google Maps ↗

Other Identifiers 3

Medicare PIN00A510330CA

Medicaid00A510330CA

Medicare UPING07172CA

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. I-chow Joe Hsu M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID3375627995

PECOS Enrollment IDI20080220000754

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

Medicare enrollment records show I-chow Hsu reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

University Of California San Francisco

1.8 mi

Surgery

400 PARNASSUS AVE, MCB 300
San Francisco, CA 94143

Reassigned Medicare billing, California enrollment
5,645 clinicians in this Medicare group

NPI 1346329380 (415) 353-2161

Ucsf Medical Group Business Services

1.8 mi

Internal Medicine

400 PARNASSUS AVE
San Francisco, CA 94122

Reassigned Medicare billing, California enrollment
5,544 clinicians in this Medicare group

NPI 1477624104 (415) 353-2808

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 18

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Obtaining data needed to develop the optimal radiation treatment, 3 or more treatment areas or any number of treatment areas where special treatment is involved 77290

This procedure involves collecting necessary data to plan the best radiation treatment. It may cover 3 or more areas or any area requiring special attention. Data collection includes imaging scans and tests to understand the disease's extent and to tailor a precise, effective treatment plan.

99 services68 patients

3d radiation therapy planning 77295

3D radiation therapy planning is a procedure that uses computer imaging to map out the area needing treatment. This ensures the radiation targets the disease precisely, while minimizing exposure to surrounding healthy tissues. It's a key step in preparing for effective radiation therapy.

94 services68 patients

High dose radiation therapy, 2-12 channels 77771

High-dose radiation therapy with 2-12 channels is a treatment where concentrated radiation beams target specific areas in the body to destroy cancer cells. The number of channels refers to how the radiation is delivered from different angles for optimal treatment.

86 services38 patients

Design and construction of simple radiation treatment device 77332

A simple radiation treatment device is designed and built to target specific areas in your body with high energy rays. This process is carefully planned to ensure that the radiation accurately reaches the area needing treatment, while minimizing exposure to healthy tissues.

79 services52 patients

Ultrasonic guidance for administration of radiation therapy 76965

Ultrasonic guidance for radiation therapy is a technique that uses ultrasound images to accurately target the area requiring treatment. It helps ensure radiation is directed precisely, reducing harm to healthy tissues.

74 services50 patients

Insertion of needle or tube into prostate for radiation therapy 55875

This procedure involves placing a fine needle or small tube into a gland located in the lower part of your body. It's done to deliver radiation therapy directly to the area, helping to treat conditions effectively. It's performed by a trained professional.

73 services49 patients

Complex radiation therapy planning 77263

Complex radiation therapy planning is a process to determine the most effective way to deliver radiation to a specific area in your body. It involves detailed imaging to map your body's structure, allowing for precise targeting of cancer cells while sparing healthy tissue.

71 services68 patients

Special radiation treatment 77470

Special radiation treatment is a medical procedure that uses high-energy rays to destroy or damage cancer cells. It's a targeted approach that aims to minimize harm to healthy tissues. The treatment duration varies based on individual health conditions.

68 services65 patients

New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more 99205

This is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.

59 services59 patients

High dose radiation therapy, more than 12 channels 77772

High-dose radiation therapy with more than 12 channels is a treatment method that uses powerful radiation to target and destroy harmful cells in the body. This advanced technique allows for precise targeting, reducing harm to surrounding healthy tissue.

44 services33 patients

Placement of device in prostate for radiation therapy 55876

This procedure involves placing a small device in the gland below the bladder to deliver radiation therapy. This helps target therapy directly to the concerned area, potentially reducing side effects and improving treatment effectiveness.

29 services29 patients

Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215

This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.

23 services21 patients

Insertion of needles or tubes into pelvic or genital organs for radiation therapy 55920

This procedure involves placing small needles or tubes into the lower abdominal area. These act as channels to deliver radiation therapy directly to the affected area. It's a targeted approach to treat certain conditions, minimizing the impact on healthy tissues.

21 services17 patients

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

21 services18 patients

Insertion of device into uterus for radiation therapy 57155

This procedure involves placing a small device into your body's midsection to deliver targeted radiation therapy. It's a common treatment for certain types of conditions. The device stays in place for a short time, ensuring the therapy is focused and precise.

19 services15 patients

Insertion of device in abdominal cavity through skin for radiation therapy guidance 49411

This procedure involves placing a small device under your skin into your abdominal cavity. This device helps direct radiation therapy more accurately, targeting only the area needing treatment. It's done under local anesthesia, ensuring comfort throughout.

15 services15 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

14 services14 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

11 services11 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94115 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$202.35 typical visit price

range $69.00 – $202.35

Typical copayment $50.58 (range $17.25 – $50.58)

Most-billed visit code 99205

Established Patient

$84.91 typical visit price

range $23.44 – $166.46

Typical copayment $21.22 (range $5.86 – $41.61)

Most-billed visit code 99213

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

74.46/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Scored as part of a group practice

Promoting Interoperability

Improvement Activities

Cost

46.68

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. PATRICIA J MORAN PSY

Psychologist

1600 DIVISADERO ST
SAN FRANCISCO, CA 94115

San Francisco County (415) 353-9745

DR. ERIC KAORU NAKAKURA MD

Surgery

1600 DIVISADERO ST
SAN FRANCISCO, CA 94115

San Francisco County (415) 353-9846

DR. HOPE S. RUGO MD

Internal Medicine (Hematology)

1600 DIVISADERO ST
SAN FRANCISCO, CA 94115

San Francisco County (415) 353-7070

RONALD BALASSANIAN MD

Pathology (Anatomic Pathology & Clinical Pathology)

1600 DIVISADERO ST, UCSF/MT. ZION MEDICAL CENTER, ROOM 200 FNA CLINIC
SAN FRANCISCO, CA 94115

San Francisco County (415) 514-6642

DR. JOHN W PARK MD

Internal Medicine (Medical Oncology)

1600 DIVISADERO ST, 2ND FLOOR, BOX 1710
SAN FRANCISCO, CA 94115

San Francisco County (415) 353-7070

MARYLOU LOUISE ERNEST NP

Nurse Practitioner

1600 DIVISADERO ST
SAN FRANCISCO, CA 94115

San Francisco County (415) 353-7035

DR. RICHARD M. KRIEG MD

Radiology (Therapeutic Radiology)

1600 DIVISADERO ST
SAN FRANCISCO, CA 94115

San Francisco County (415) 353-7175

UCSF DEPARTMENT OF LABORATORY MEDICINE

Pathology (Clinical Pathology/Laboratory Medicine)

1600 DIVISADERO ST
SAN FRANCISCO, CA 94115

San Francisco County (415) 476-1000

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is I-chow Hsu's NPI number?

The NPI number for I-chow Hsu is 1144263039. It was assigned to this individual provider in the NPPES registry on June 14, 2006.

Where is I-chow Hsu located?

I-chow Hsu practices at 1600 Divisadero St, San Francisco, CA 94115. The listed phone number is (415) 353-7175.

What is I-chow Hsu's specialty?

The primary specialty registered for this NPI is Radiology, specializing in Radiation Oncology, with taxonomy code 2085R0001X.

Is I-chow Hsu enrolled in Medicare?

Yes. I-chow Hsu is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for I-chow Hsu's services?

According to the CMS Revalidation Reassignment List (October 2026 release), I-chow Hsu reassigns Medicare benefits to 2 organizations: University Of California San Francisco (San Francisco, CA) and Ucsf Medical Group Business Services (San Francisco, CA). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for I-chow Hsu's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for I-chow Hsu was last updated on July 9, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.