Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Erich C Treeby, N.D.
Naturopath in Portland, OR · enumerated 2007.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1609908615
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Registry record
Entity type Individual (Type 1)
Name Dr. Erich C Treeby
Credential N.D.
Sex Male
Practice address 2220 Sw 1st Ave, Portland, OR, 97201
Phone (503) 552-1551
Enumeration date Mar 12, 2007
Last updated in NPPES Jul 8, 2007
Taxonomy & licenses
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.
Frequently asked questions
Where does Erich Treeby 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 Erich Treeby?
The National Provider Identifier (NPI) for Erich Treeby is 1609908615, a Type 1 (individual) record in the CMS NPPES registry.
Other providers at this practice address
Browse all → Audrey Bergsma Naturopath · Portland, OR NPI 1114066271 Dohn Kruschwitz Naturopath · Portland, OR NPI 1972647428 Tish Stoebner Naturopath · Portland, OR NPI 1932243177 Glen Nagel Naturopath · Portland, OR NPI 1285769331 William Taylor Family Medicine Physician · Portland, OR NPI 1356470769 Mary Fry Naturopath · Portland, OR NPI 1538284526 Kimberly Windstar Naturopath · Portland, OR NPI 1649395112 Sandra Szabat Naturopath · Portland, OR NPI 1629279443
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.