Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Gregory M Eilers, MD

Obstetrics & Gynecology Physician in Portland, OR · enumerated 2007 · practices at Women'S Healthcare Associates, LLC.

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

National Provider Identifier

1134323843

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Registry record

Entity type Individual (Type 1)

Name Dr. Gregory M Eilers

Credential MD

Sex Male

Practice address 10566 Se Washington St, Portland, OR, 97216

Phone (503) 734-3800

Fax (503) 734-3808

Enumeration date Jun 14, 2007

Last updated in NPPES Jan 28, 2026

Taxonomy & licenses

207V00000X Obstetrics & Gynecology Physician Allopathic & Osteopathic Physicians · License MD28519 (OR) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
242399	Medicaid	OR	-

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.

Read the full guide → Validate an NPI →

Frequently asked questions

Where does Gregory Eilers practice?

The practice location on file with NPPES is in Portland, OR. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Gregory Eilers?

The National Provider Identifier (NPI) for Gregory Eilers is 1134323843, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-01-28.