Christopher Siyuan Yang, MD

Medicare standing: Clear; Enrolled, allowed to bill and order, not excluded
Plans that list them: Not verified; Not the same as out of network.
Office: 1

Offices

1 location

Plan participation

Not verified

We could not verify current plan participation for this doctor. This does not mean they are out of network. Call Dr. Yang’s office at (650) 723-4000 to ask if they take your plan before you enroll.

State licence records

1 licence

Illinois 125079505Temporary Medical Permit · since 2025 · expires 2026-06-30Specialty on the licence: Dermatology
ActiveNo board action on this licenceCheck it with the state

We check Colorado, Delaware, Florida, Illinois, Maryland, New Jersey, New York, Tennessee, Texas, Virginia, Washington, plus California above. A state that is not in this list has not been checked, which is not the same as clear.

Money from drug and device companies

$481 in 2025

Sort by

Industry payments by year

2025	6	7	None	$481
2024	2	2	None	$210
2023	4	7	None	$673

Paid work is consulting, speaking, honoraria and royalties, as opposed to meals and travel.

A payment is not proof that care is biased.

Sort by

Payments by company

Janssen Scientific Affairs	Tremfya	$135	1 payment Meals for Tremfya · 2025-03-08 · $135
Lilly USA	Ebglyss	$124	2 payments Meals for Taltz · 2025-04-30 · $24 Meals for Ebglyss · 2025-03-09 · $100
Organon	Vtama	$101	1 payment Meals for Vtama · 2025-03-06 · $101
Janssen Biotech	Tremfya	$55	1 payment Meals for Tremfya · 2025-04-23 · $55
Takeda Pharmaceuticals U.S.A.	None	$34	1 payment Meals · 2025-12-03 · $34
Genzyme	Dupixent	$32	1 payment Meals for Dupixent · 2025-10-29 · $32

See all 7 published payments

Sort by

Every published payment

Takeda Pharmaceuticals U.S.A.	Meals · 2025-12-03	None	$34
Genzyme	Meals · 2025-10-29	Dupixent	$32
Lilly USA	Meals · 2025-04-30	Taltz	$24
Janssen Biotech	Meals · 2025-04-23	Tremfya	$55
Lilly USA	Meals · 2025-03-09	Ebglyss	$100
Janssen Scientific Affairs	Meals · 2025-03-08	Tremfya	$135
Organon	Meals · 2025-03-06	Vtama	$101

See earlier years (2024, 2023)

2024: $210

Sort by

Payments by company in 2024

Dermavant Sciences	Vtama	$164	1 payment Meals for Vtama · 2024-03-08 · $164
Abbvie	Rinvoq	$46	1 payment Meals for Rinvoq · 2024-05-22 · $46

2023: $673

Sort by

Payments by company in 2023

Janssen Biotech	Tremfya	$226	2 payments Education for Tremfya · 2023-10-02 · $95 Meals for Tremfya · 2023-09-20 · $131
AbbVie	Rinvoq	$214	3 payments Meals for Skyrizi · 2023-10-25 · $46 Meals · 2023-08-23 · $43 Meals for Rinvoq · 2023-08-03 · $125
Boehringer Ingelheim Pharmaceuticals	None	$119	1 payment Meals · 2023-08-31 · $119
Lilly USA	Taltz	$115	1 payment Meals for Taltz · 2023-10-04 · $115

Professional record

NPI: 1174006571
Licence: IL 125.079505Illinois 125079505: Active

More record details

Sole proprietor: No
Taxonomy: Federal specialty code 207N00000X (207N00000X); Internal medicine (207R00000X)
Mailing address: 300 Pasteur Dr, Stanford, CA, 94305
NPI first listed: 2018-09-11
NPI last updated: 2026-08-24
NPI record certified: 2026-08-24

This is when the NPI record was last certified, not a medical board exam.