RYAN CHANG
NPI 1164985263
Internal Medicine - Medical Oncology in San Mateo, CA

Q: What is Ryan Chang's NPI number?

The NPI number for Ryan Chang is 1164985263. It was assigned to this individual provider in the NPPES registry on April 8, 2019.

Q: What is Ryan Chang's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Medical Oncology, with taxonomy code 207RX0202X.

Q: When was this NPI record last updated?

The NPPES record for Ryan Chang was last updated on August 28, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 23 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 08, 2019PECOS Enrolled

218 DE ANZA BLVD, SAN MATEO, CA 94402(415) 514-7520 Get Directions Write a Review

NPPES record last updated: August 28, 2024. Verified against the NPPES registry weekly; last sync: August 02, 2026.

On this page

About Ryan Chang NPPES

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

RYAN CHANG (NPI 1164985263) is an individual medical oncology provider in San Mateo, California, licensed in California (A179941) and active in the NPI registry since April 2019. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1164985263

Entity TypeIndividualMale

Primary Taxonomy207RX0202X

Provider Legal NameRYAN CHANG

Location Address218 DE ANZA BLVDSan Mateo, CA 94402-3913

Mailing Address1 Hawthorne St Unit 20fSan Francisco, CA 94105-3983 · (415) 937-3662

Phone(415) 514-7520

Sole ProprietorNo

Enumeration DateApril 8, 2019

Last NPPES UpdateAugust 28, 2024

NPPES CertifiedAugust 28, 2024

✔ NPI 1164985263 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Medical OncologyAllopathic & Osteopathic Physicians

Taxonomy Code207RX0202X

License✔ Licensed in CA · A179941

Definition

An internist who specializes in the diagnosis and treatment of all types of cancer and other benign and malignant tumors. This specialist decides on and administers therapy for these malignancies as well as consults with surgeons and radiotherapists on other treatments for cancer.

218 DE ANZA BLVD, San Mateo, CA 94402

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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Ryan Chang 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 94402 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

$202.35 typical visit price

range $69.00 – $202.35

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

Most-billed visit code 99205

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 17

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

KENT MARC-JOSEF ADLER M.D.

Internal Medicine (Hematology & Oncology)