SARAH HSU MD
NPI 1861135071
Internal Medicine in San Francisco, CA

Q: What is Sarah Hsu's NPI number?

The NPI number for Sarah Hsu is 1861135071. It was assigned to this individual provider in the NPPES registry on April 15, 2022.

Q: What is Sarah Hsu's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Q: When was this NPI record last updated?

The NPPES record for Sarah Hsu was last updated on August 22, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 months 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 April 15, 2022PECOS EnrolledAccepts Medicare Assignment

1001 POTRERO AVE, SAN FRANCISCO, CA 94110(628) 206-8494 Get Directions Write a Review

NPPES record last updated: August 22, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

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About Sarah Hsu Md NPPES

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

SARAH HSU MD (NPI 1861135071) is an individual internal medicine provider in San Francisco, California, licensed in California (A189181) and active in the NPI registry since April 2022. She is enrolled in Medicare PECOS and is a graduate of Warren Alpert Medical School Of Brown University (2022).

NPPES Registry Identity

NPI1861135071

Entity TypeIndividualFemale

Primary Taxonomy207R00000X

Provider Legal NameSARAH HSUCredential: MD

Location Address1001 POTRERO AVESan Francisco, CA 94110-3518

Mailing AddressBox G-9290, Brown UniversityProvidence, RI 02903-3119

Phone(628) 206-8494

Sole ProprietorNo

Medical School CMSWarren Alpert Medical School Of Brown UniversityGraduated 2022

Enumeration DateApril 15, 2022

Last NPPES UpdateAugust 22, 2025

NPPES CertifiedAugust 22, 2025

✔ NPI 1861135071 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207R00000X

License✔ Licensed in CA · A189181

Definition

A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X

1001 POTRERO AVE, San Francisco, CA 94110

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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

Sarah Hsu Md 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 ID2062880503

PECOS Enrollment IDI20250916001626

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 Reassignment

Medicare enrollment records show Sarah Hsu reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

City & County Of San Francisco

Same address

General Acute Care Hospital

1001 POTRERO AVE, BUILDING 5, WARD 1B
San Francisco, CA 94110

Reassigned Medicare billing, California enrollment
1,573 clinicians in this Medicare group

NPI 1083648810 (415) 759-4067

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

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94110 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

$153.83 typical visit price

range $69.00 – $202.35

Typical copayment $38.45 (range $17.25 – $50.58)

Most-billed visit code 99204

Established Patient

$119.48 typical visit price

range $23.44 – $166.46

Typical copayment $29.87 (range $5.86 – $41.61)

Most-billed visit code 99214

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

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.

ROCIO C AGRAZ-LARA RN, PHN

Registered Nurse

1001 POTRERO AVE, ZSFG BUILDING 90 4TH FLOOR
SAN FRANCISCO, CA 94110

San Francisco County (415) 206-8524

DR. SUSAN WLODARCZYK MD

Student in an Organized Health Care Education/Training Program

1001 POTRERO AVE, BLDG 10, 3RD FLOOR, WARD 13 BOX 1364
SAN FRANCISCO, CA 94110

San Francisco County (415) 206-5164

AMY DINER PSY.D.

Student in an Organized Health Care Education/Training Program

1001 POTRERO AVE
SAN FRANCISCO, CA 94110

San Francisco County (415) 206-5270

CHRISTOPHER RUIZ

Case Manager/Care Coordinator

1001 POTRERO AVE
SAN FRANCISCO, CA 94110

San Francisco County (415) 206-3950

C. STIRLING SOMERS

Counselor

1001 POTRERO AVE
SAN FRANCISCO, CA 94110

San Francisco County (415) 206-5270

WILLIAM RUSSEL CARPENTER FNP-C

Nurse Practitioner (Family)

1001 POTRERO AVE
SAN FRANCISCO, CA 94110

San Francisco County (628) 206-8000

REGENTS OF THE UNIVERSITY OF CALIFORNIA

Clinical Medical Laboratory

1001 POTRERO AVE, BLDG 100, RM 104
SAN FRANCISCO, CA 94110

San Francisco County (415) 502-4775

DR. DENISE RENEE GONZALEZ MD

Internal Medicine

1001 POTRERO AVE, 1M
SAN FRANCISCO, CA 94110

San Francisco County (415) 206-6075

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 Sarah Hsu's NPI number?

The NPI number for Sarah Hsu is 1861135071. It was assigned to this individual provider in the NPPES registry on April 15, 2022.

Where is Sarah Hsu located?

Sarah Hsu practices at 1001 Potrero Ave, San Francisco, CA 94110. The listed phone number is (628) 206-8494.

What is Sarah Hsu's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Sarah Hsu enrolled in Medicare?

Yes. Sarah 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 organization bills Medicare for Sarah Hsu's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Sarah Hsu reassigns Medicare benefits to City & County Of San Francisco (San Francisco, CA). The 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 Sarah 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 Sarah Hsu was last updated on August 22, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 months 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.