Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Cynthia Lynn Sieck, PHARM.D.

Pharmacotherapy Pharmacist in Portland, OR · enumerated 2007.

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

National Provider Identifier

1225211147

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Dr. Cynthia Lynn Sieck

Credential PHARM.D.

Sex Female

Practice address 5725 Ne 138th Ave, Portland, OR, 97230

Phone (503) 261-7966

Fax (503) 261-7977

Enumeration date Dec 13, 2007

Last updated in NPPES Dec 13, 2007

Taxonomy & licenses

1835P1200X Pharmacotherapy Pharmacist Pharmacy Service Providers · License RPH0008993 (OR) Primary

PHARMD · Doctor of Pharmacy: A licensed pharmacist with a professional doctorate in pharmacy. About the PHARMD credential

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 Cynthia Sieck 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 Cynthia Sieck?

The National Provider Identifier (NPI) for Cynthia Sieck is 1225211147, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-12-13.