Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Ellen Michaelson MD PC

Hematology (Internal Medicine) Physician in Portland, OR · enumerated 2007 · authorized official Ellen Michaelson, President.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1245437110

Verified

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Registry record

Entity type Organization (Type 2)

Legal business name Ellen Michaelson MD PC

Practice address 2456 Nw Northrup St, Unit 1-A, Portland, OR, 97210

Phone (503) 274-0045

Fax (503) 243-6632

Enumeration date Jul 2, 2007

Last updated in NPPES Jul 17, 2012

Taxonomy & classification

207RH0000X Hematology (Internal Medicine) Physician Allopathic & Osteopathic Physicians · License MD018281 (OR) Primary

Authorized official

Name Ellen Michaelson

Title President

Phone (503) 274-0045

Other identifiers

Identifier	Type	State	Issuer
831885000	Other	OR	BLUECROSS
A002	Other	OR	TRICARE

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

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Frequently asked questions

Where is Ellen Michaelson MD PC located?

The practice location on file with NPPES is in Portland, OR.

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2012-07-17. Verify at npiregistry.cms.hhs.gov.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-07-17.