NPI Portal NPI Lookup & Verification

Robert Owen Dietz, DC

Robert Owen Dietz is a Chiropractor provider (Chiropractor) practicing in Gresham, OR, registered in the NPPES registry with NPI 1992992077 since 2007. The credential DC stands for Doctor of Chiropractic.

✓ Active NPI ✓ Valid NPI checksum Sole proprietor

NPI 1992992077
Entity type Individual (Type 1)
Name Robert Owen Dietz
Credential DC
Sex Male
Practice address Gresham, OR, 97030
Phone 5034923910
Fax 5034923905
Enumeration date 2007-10-02
Last updated in NPPES 2007-10-02

Street address withheld — NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

Taxonomy code Specialty Primary License State
111N00000X Chiropractor Primary 273650 OR

DC — Doctor of Chiropractic: A licensed chiropractor focusing on musculoskeletal and nervous system disorders. About the DC credential

Other identifiers

Identifier Type State Issuer
273650 Other CA MEDICAL LICENSE
Copy-ready billing details
Provider: Robert Dietz, DC
NPI: 1992992077
Taxonomy: 111N00000X (Chiropractor)
Address: Gresham, OR, 97030

Other providers at this practice address

NPI Name Type Specialty Location
1376541995 Richard Phipps Individual Dermatology Physician Gresham, OR
1386630010 Brian Knight Do LLC Organization Neuromusculoskeletal Medicine & OMM Physician Gresham, OR
1831186774 Brian Knight Individual Neuromusculoskeletal Medicine & OMM Physician Gresham, OR
1558352047 Eric Strand Individual Acupuncturist Gresham, OR
1326011370 Lloyd Chang Individual General Practice Dentistry Gresham, OR
1245322601 Douglas Hicks Individual Clinical Psychologist Gresham, OR
1992897490 Peter Wilson Individual Clinical Psychologist Gresham, OR
1366535643 Anne Wehrli Individual Professional Counselor Gresham, OR

Verify this record

Cross-check NPI 1992992077 against the authoritative CMS record: view Robert Owen Dietz on the official NPPES registry .

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 or validate an NPI number.

Frequently asked questions

Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
What specialty is Robert Dietz?
Robert Dietz is registered in NPPES with the primary taxonomy of Chiropractor. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Source: CMS NPPES (public data). Snapshot 2026-07-10. Provider record last updated 2007-10-02.