JOHN C BLASKO M.D.
NPI 1194748715
Radiology - Radiation Oncology in Seattle, WA

Q: What is John Blasko's NPI number?

The NPI number for John Blasko is 1194748715. It was assigned to this individual provider in the NPPES registry on July 25, 2006.

Q: What is John Blasko's specialty?

The primary specialty registered for this NPI is Radiology, specializing in Radiation Oncology, with taxonomy code 2085R0001X.

Q: When was this NPI record last updated?

The NPPES record for John Blasko was last updated on January 16, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.

Active since July 25, 2006

1101 MADISON, SUITE 1101, C/O SEATTLE PROSTATE INSTITUTE, SEATTLE, WA 98104(206) 215-2480(206) 215-2481 Get Directions Write a Review

NPPES record last updated: January 16, 2008. Verified against the NPPES registry weekly; last sync: August 16, 2026.

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About John C Blasko M.d. NPPES

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

JOHN C BLASKO M.D. (NPI 1194748715) is an individual radiation oncology provider in Seattle, Washington, licensed in Washington (MD00016098) and active in the NPI registry since July 2006.

NPPES Registry Identity

NPI1194748715

Entity TypeIndividualMale

Primary Taxonomy2085R0001X

Provider Legal NameJOHN C BLASKOCredential: M.D.

Location Address1101 MADISON, SUITE 1101, C/O SEATTLE PROSTATE INSTITUTESeattle, WA 98104

Mailing AddressPo Box 3972Seattle, WA 98124-3972 · (206) 749-5130 · Fax (206) 749-5135

Phone(206) 215-2480

Fax(206) 215-2481

Sole ProprietorNo

Enumeration DateJuly 25, 2006

Last NPPES UpdateJanuary 16, 2008

✔ NPI 1194748715 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyRadiology · Radiation OncologyAllopathic & Osteopathic Physicians

Taxonomy Code2085R0001X

License✔ Licensed in WA · MD00016098

Definition

A radiologist who deals with the therapeutic applications of radiant energy and its modifiers and the study and management of disease, especially malignant tumors.

1101 MADISON, SUITE 1101, Seattle, WA 98104

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Other Identifiers 3

Medicaid8149080WA

Medicare UPINA14697WA

Medicare PINAB04886WA

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 John Blasko's NPI number?

The NPI number for John Blasko is 1194748715. It was assigned to this individual provider in the NPPES registry on July 25, 2006.

Where is John Blasko located?

John Blasko practices at 1101 Madison, Suite 1101 C/O Seattle Prostate Institute, Seattle, WA 98104. The listed phone number is (206) 215-2480.

What is John Blasko's specialty?

The primary specialty registered for this NPI is Radiology, specializing in Radiation Oncology, with taxonomy code 2085R0001X.

When was this NPI record last updated?

The NPPES record for John Blasko was last updated on January 16, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.