Doctor profile · Federal record

Dr. Sienmi du, MD, PHD

Obstetrics & Gynecology Physician (CMS: Obstetrics/Gynecology) · Student in an Organized Health Care Education/Training Program · San Francisco, CA

  • NPI 1447711320
  • Accepts Medicare
  • 7 yrs in practice
  • Female
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
1001 Potrero Ave # 6D
San Francisco, CA 941103518
(415) 476-5192
fax (415) 476-1811
Mailing address
490 Illinois St Fl 10
San Francisco, CA 941582510

Credentials & registration

NPPES · NUCC
NPI registered
March 2019 — 7 yrs on file
Profile last updated
January 21, 2021
Year of graduation
2019 — 7 yrs since
Specialty taxonomy
207V00000X — NUCC code
State license (1)
California #1447711320

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1447711320. Last verified May 11, 2026.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$47
Transactions
2
Manufacturers
2
Payer (manufacturer) Industry Txns Amount
Adaptive Biotechnologies Corporation 1 $28.42
Incyte Corporation 1 $18.24

By nature of payment

Food and Beverage
$47

Hospital affiliations

CMS Hospital Compare

Frequently asked questions

Auto-generated from federal data
What is Dr. Sienmi du's medical specialty?
Dr. Sienmi du practices Obstetrics & Gynecology Physician in San Francisco, CA.
Where does Dr. Sienmi du practice?
Dr. Sienmi du practices at 1001 Potrero Ave # 6D, San Francisco, CA 941103518. Office phone: 4154765192.
What is Dr. Sienmi du's NPI?
Dr. Sienmi du's National Provider Identifier (NPI) is 1447711320, issued by NPPES.
Does Dr. Sienmi du accept Medicare assignment?
Yes. Dr. Sienmi du accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.