Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

CHRISTOPHER SIYUAN YANG MD
NPI 1174006571
Dermatology in Stanford, CA

Active since September 11, 2018PECOS Enrolled
300 PASTEUR DR, STANFORD, CA 94305(650) 723-4000 Get Directions Write a Review

NPPES record last updated: August 24, 2026. Verified against the NPPES registry weekly; last sync: August 30, 2026.

Record update history: Aug 24, 2026, Jul 24, 2023, Sep 11, 2018 (3 updates tracked since 2018).

About Christopher Siyuan Yang Md NPPES

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

CHRISTOPHER SIYUAN YANG MD (NPI 1174006571) is an individual dermatology provider in Stanford, California, licensed in California (A208347) and active in the NPI registry since September 2018. He is enrolled in Medicare PECOS and maintains a secondary practice location in Chicago.

NPPES Registry Identity

NPI1174006571
Entity TypeIndividualMale
Primary Taxonomy207N00000X
Provider Legal NameCHRISTOPHER SIYUAN YANGCredential: MD
Location Address300 PASTEUR DRStanford, CA 94305-2200
Mailing Address300 Pasteur DrStanford, CA 94305-2200 · (650) 723-4000
Sole ProprietorNo
Enumeration DateSeptember 11, 2018
Last NPPES UpdateAugust 24, 20263 updates tracked since enumeration
NPPES CertifiedAugust 24, 2026
NPI 1174006571 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

Primary SpecialtyDermatologyAllopathic & Osteopathic Physicians
Taxonomy Code207N00000X
Licenses Licensed in CA · A208347 Licensed in IL · 125.079505
Definition
A dermatologist is trained to diagnose and treat pediatric and adult patients with benign and malignant disorders of the skin, mouth, external genitalia, hair and nails, as well as a number of sexually transmitted diseases. The dermatologist has had additional training and experience in the diagnosis and treatment of skin cancers, melanomas, moles and other tumors of the skin, the management of contact dermatitis and other allergic and nonallergic skin disorders, and in the recognition of the skin manifestations of systemic (including internal malignancy) and infectious diseases. Dermatologists have special training in dermatopathology and in the surgical techniques used in dermatology. They also have expertise in the management of cosmetic disorders of the skin such as hair loss and scars and the skin changes associated with aging.
Also ListedInternal MedicineTaxonomy 207R00000X · License 125.079505 (IL)
300 PASTEUR DR, Stanford, CA 94305

Secondary Practice Location 1

Location 1251 E Huron StChicago, IL 60611-2908 · Phone (312) 926-2000

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

Enrolled in Medicare (PECOS)

Christopher Siyuan Yang Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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 94305 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
$106.47 typical visit price
range $70.37 – $206.04
Typical copayment $26.61 (range $17.59 – $51.51)
Most-billed visit code 99203
Established Patient
$86.56 typical visit price
range $23.96 – $169.60
Typical copayment $21.64 (range $5.99 – $42.40)
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.

Internal Medicine (Gastroenterology)
300 PASTEUR DR, ALWAY BUILD M211, MC 5187
STANFORD, CA 94305
Radiology (Vascular & Interventional Radiology)
300 PASTEUR DR
STANFORD, CA 94305
Psychiatry & Neurology (Psychiatry)
300 PASTEUR DR
STANFORD, CA 94305
Radiology (Diagnostic Radiology)
300 PASTEUR DR
STANFORD, CA 94305
Nurse Practitioner
300 PASTEUR DR
STANFORD, CA 94305
Neurological Surgery
300 PASTEUR DR
STANFORD, CA 94305
Pathology (Anatomic Pathology & Clinical Pathology)
300 PASTEUR DR, LANE 235
STANFORD, CA 94305
Internal Medicine (Critical Care Medicine)
300 PASTEUR DR
STANFORD, CA 94305

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 Christopher Yang's NPI number?

The NPI number for Christopher Yang is 1174006571. It was assigned to this individual provider in the NPPES registry on September 11, 2018.

Where is Christopher Yang located?

Christopher Yang practices at 300 Pasteur Dr, Stanford, CA 94305. The listed phone number is (650) 723-4000.

What is Christopher Yang's specialty?

The primary specialty registered for this NPI is Dermatology with taxonomy code 207N00000X.

Is Christopher Yang enrolled in Medicare?

Yes. Christopher Yang is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Christopher Yang was last updated on August 24, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 days 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.