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DR. SIENMI DU MD, PHD
NPI 1447711320
Obstetrics & Gynecology in San Francisco, CA

Active since March 25, 2019PECOS EnrolledAccepts Medicare Assignment
1001 POTRERO AVE # 6D, SAN FRANCISCO, CA 94110(415) 476-5192(415) 476-1811 Get Directions Write a Review

NPPES record last updated: January 21, 2021. Verified against the NPPES registry weekly; last sync: July 26, 2026.

About Dr. Sienmi Du Md, Phd NPPES

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

DR. SIENMI DU MD, PHD (NPI 1447711320) is an individual obstetrics & gynecology provider in San Francisco, California, licensed in California (1447711320) and active in the NPI registry since March 2019. She is enrolled in Medicare PECOS and is a graduate of Other (2019).

NPPES Registry Identity

NPI1447711320
Entity TypeIndividualFemale
Primary Taxonomy207V00000X
Provider Legal NameDR. SIENMI DUCredential: MD, PHD
Location Address1001 POTRERO AVE # 6DSan Francisco, CA 94110-3518
Mailing Address490 Illinois St Fl 10San Francisco, CA 94158-2510 · (415) 476-5192 · Fax (415) 476-1811
Phone(415) 476-5192
Fax(415) 476-1811
Sole ProprietorNo
Medical School CMSOtherGraduated 2019
Enumeration DateMarch 25, 2019
Last NPPES UpdateJanuary 21, 2021
NPPES CertifiedJanuary 21, 2021
✔ NPI 1447711320 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyObstetrics & GynecologyAllopathic & Osteopathic Physicians
Taxonomy Code207V00000X
License✔ Licensed in CA · 1447711320
Definition

An obstetrician/gynecologist possesses special knowledge, skills and professional capability in the medical and surgical care of the female reproductive system and associated disorders. This physician serves as a consultant to other physicians and as a primary physician for women.

Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X
1001 POTRERO AVE # 6D, San Francisco, CA 94110
Open in Google Maps ↗

Other Identifiers 1

OtherRES000CA · Upin

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Sienmi Du Md, Phd 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 ID2668889726
PECOS Enrollment IDI20251112003643
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.

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
$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.

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. CHITRA AKILESWARAN MD
Obstetrics & Gynecology
1001 POTRERO AVE # 6D
SAN FRANCISCO, CA 94110
San Francisco County (415) 206-3061
LEAH WORMACK MD
Student in an Organized Health Care Education/Training Program
1001 POTRERO AVE # 6D
SAN FRANCISCO, CA 94110
San Francisco County (415) 206-3409
SARAH BENTLEY WILSON HANNAY M.D.
Obstetrics & Gynecology
1001 POTRERO AVE # 6D, SFGH OBGYN
SAN FRANCISCO, CA 94110
San Francisco County (415) 206-3061
KATHERINE STACIE BRITO
Student in an Organized Health Care Education/Training Program
1001 POTRERO AVE # 6D
SAN FRANCISCO, CA 94110
San Francisco County (714) 247-9150
VICTOR V LONG
Obstetrics & Gynecology
1001 POTRERO AVE # 6D, SFGH OB GYN
SAN FRANCISCO, CA 94110
San Francisco County (415) 206-3061
DR. ANDREA MICHELLE DALVE-ENDRES MD
Obstetrics & Gynecology
1001 POTRERO AVE # 6D, SFGH OB GYN
SAN FRANCISCO, CA 94110
San Francisco County (415) 206-3061
DR. TUSHANI DIMANTHA ILLANGASEKARE MD
Obstetrics & Gynecology
1001 POTRERO AVE # 6D, SFGH OB GYN
SAN FRANCISCO, CA 94110
San Francisco County (415) 206-4069
MELANIE MAYKIN M.D.
Obstetrics & Gynecology
1001 POTRERO AVE # 6D, SFGH OB GYN
SAN FRANCISCO, CA 94110
San Francisco County (415) 476-5192

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 Sienmi Du's NPI number?

The NPI number for Sienmi Du is 1447711320. It was assigned to this individual provider in the NPPES registry on March 25, 2019.

Where is Sienmi Du located?

Sienmi Du practices at 1001 Potrero Ave # 6D, San Francisco, CA 94110. The listed phone number is (415) 476-5192.

What is Sienmi Du's specialty?

The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.

Is Sienmi Du enrolled in Medicare?

Yes. Sienmi Du 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.

When was this NPI record last updated?

The NPPES record for Sienmi Du was last updated on January 21, 2021. NPI Profile syncs with the weekly NPPES data releases published by CMS.