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DR. JEFFREY WIEZOREK
NPI 1467600288
Internal Medicine - Medical Oncology in Thousand Oaks, CA

Active since September 04, 2008
1 AMGEN CENTER DR, MS 38-2-A, THOUSAND OAKS, CA 91320(805) 447-5707 Get Directions Write a Review

NPPES record last updated: September 4, 2008. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Dr. Jeffrey Wiezorek NPPES

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

DR. JEFFREY WIEZOREK (NPI 1467600288) is an individual medical oncology provider in Thousand Oaks, California, licensed in California (A69564) and active in the NPI registry since September 2008.

NPPES Registry Identity

NPI1467600288
Entity TypeIndividualMale
Primary Taxonomy207RX0202X
Provider Legal NameDR. JEFFREY WIEZOREK
Location Address1 AMGEN CENTER DR, MS 38-2-AThousand Oaks, CA 91320-1730
Mailing Address1 Amgen Center Dr, Ms 38-2-aThousand Oaks, CA 91320-1730
Phone(805) 447-5707
Sole ProprietorYes
Enumeration DateSeptember 4, 2008
✔ NPI 1467600288 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 · A69564
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.
1 AMGEN CENTER DR, Thousand Oaks, CA 91320
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Other Providers at the Same Location NPPES 16

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

DR. LEANDRO GRIMALDI MD, MPH, EMBA
Specialist
1 AMGEN CENTER DR
THOUSAND OAKS, CA 91320
Ventura County (805) 447-1000
MICHAEL S VINCENT M.D., PH.D.
Internal Medicine (Rheumatology)
1 AMGEN CENTER DR
THOUSAND OAKS, CA 91320
Ventura County (805) 447-9481
DEBORAH PALASKI RNP
Nurse Practitioner (Family)
1 AMGEN CENTER DR, OCCUPATIONAL HEALTH, BLDG. 10
THOUSAND OAKS, CA 91320
Ventura County (805) 447-8899
DR. THEODORE E OKERSON II M.D.
Internal Medicine
1 AMGEN CENTER DR, MS 38/3B
THOUSAND OAKS, CA 91320
Ventura County (805) 447-9105
DR. JOSHUA JUDAH OFMAN M.D.
Specialist
1 AMGEN CENTER DR, MAILSTOP 27-2-C
THOUSAND OAKS, CA 91320
Ventura County (805) 447-0787
STEVEN KENNETH GALSON MD, MPH
Preventive Medicine (Public Health & General Preventive Medicine)
1 AMGEN CENTER DR
THOUSAND OAKS, CA 91320
Ventura County (805) 447-4988
NILOUFER CAINGLIT RN, NP
Nurse Practitioner
1 AMGEN CENTER DR
THOUSAND OAKS, CA 91320
Ventura County (805) 447-3584
DR. LISA LEE MATHIS MD
Pediatrics
1 AMGEN CENTER DR, PEDIATRIC CLINIC
THOUSAND OAKS, CA 91320
Ventura County (805) 279-9046

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 Jeffrey Wiezorek's NPI number?

The NPI number for Jeffrey Wiezorek is 1467600288. It was assigned to this individual provider in the NPPES registry on September 4, 2008.

Where is Jeffrey Wiezorek located?

Jeffrey Wiezorek practices at 1 Amgen Center Dr Ms 38-2-A, Thousand Oaks, CA 91320. The listed phone number is (805) 447-5707.

What is Jeffrey Wiezorek'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 Jeffrey Wiezorek was last updated on September 4, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 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.