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CY STEIN MD
NPI 1871673350
Internal Medicine - Medical Oncology in Duarte, CA

Active since October 17, 2006
1500 DUARTE RD, CITY OF HOPE - MEDICAL ONCOLOGY BLDG 51, DUARTE, CA 91010(626) 471-3890(626) 471-7322 Get Directions Write a Review

NPPES record last updated: November 13, 2020. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Nov 13, 2020, Jul 14, 2020, Mar 26, 2018 (3 updates tracked since 2018).

About Cy Stein Md NPPES

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

CY STEIN MD (NPI 1871673350) is an individual medical oncology provider in Duarte, California, licensed in California (G89157) and active in the NPI registry since October 2006.

NPPES Registry Identity

NPI1871673350
Entity TypeIndividualMale
Primary Taxonomy207RX0202X
Provider Legal NameCY STEINCredential: MD
Location Address1500 DUARTE RD, CITY OF HOPE - MEDICAL ONCOLOGY BLDG 51Duarte, CA 91010-3012
Mailing Address28 S Oak Knoll Ave Unit 210Pasadena, CA 91101
Phone(626) 471-3890
Fax(626) 471-7322
Sole ProprietorNo
Enumeration DateOctober 17, 2006
Last NPPES UpdateNovember 13, 20203 updates tracked since enumeration
NPPES CertifiedNovember 13, 2020
✔ NPI 1871673350 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Medical OncologyAllopathic & Osteopathic Physicians
Taxonomy Code207RX0202X
Licenses✔ Licensed in CA · G89157✔ Licensed in NY · 157794
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.
1500 DUARTE RD, Duarte, CA 91010
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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.

SASAN FAZELI M.D.
Internal Medicine (Endocrinology, Diabetes & Metabolism)
1500 DUARTE RD
DUARTE, CA 91010
Los Angeles County (626) 256-4673
SKAI MINDY FU PHARMD
Pharmacist
1500 DUARTE RD
DUARTE, CA 91010
Los Angeles County (626) 500-5461
JIMMIE WONG MD
Radiology (Diagnostic Radiology)
1500 DUARTE RD
DUARTE, CA 91010
Los Angeles County (626) 359-8111
TERENCE WILLIAMS M.D.
Radiology (Radiation Oncology)
1500 DUARTE RD
DUARTE, CA 91010
Los Angeles County (626) 256-4673
DR. MUSTAFA RAOOF M.D.
Surgery (Surgical Oncology)
1500 DUARTE RD
DUARTE, CA 91010
Los Angeles County (626) 256-4673
DR. EDNA CLOGG SHENVI M.D.
Surgery
1500 DUARTE RD
DUARTE, CA 91010
Los Angeles County (626) 256-4673
ALAN CHEN TANG M.D.
Anesthesiology
1500 DUARTE RD
DUARTE, CA 91010
Los Angeles County (626) 359-8111
WINSTON YUHSIEN LEE MD, PHD
Pathology (Hematology)
1500 DUARTE RD
DUARTE, CA 91010
Los Angeles County (626) 256-4673

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 Cy Stein's NPI number?

The NPI number for Cy Stein is 1871673350. It was assigned to this individual provider in the NPPES registry on October 17, 2006.

Where is Cy Stein located?

Cy Stein practices at 1500 Duarte Rd City Of Hope - Medical Oncology Bldg 51, Duarte, CA 91010. The listed phone number is (626) 471-3890.

What is Cy Stein's specialty?

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

When was this NPI record last updated?

The NPPES record for Cy Stein was last updated on November 13, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 years 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.