Joel Daniel Duling, RD

Joel Daniel Duling is a Registered Dietitian provider (Dietitian, Registered) practicing in Eugene, OR, registered in the NPPES registry with NPI 1184397176 since 2021. The credential RD stands for Registered Dietitian. Practices at Cascade Surgical Oncology, PC (listed at the same practice address in NPPES).

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NPI	1184397176
Entity type	Individual (Type 1)
Name	Joel Daniel Duling
Credential	RD
Sex	Male
Practice address	1200 HILYARD ST STE 550, Eugene, OR, 97401
Phone	4582056543
Fax	4582056492
Enumeration date	2021-07-27
Last updated in NPPES	2025-04-16

Taxonomy & licenses

Taxonomy code	Specialty	Primary	License	State
133V00000X	Registered Dietitian	Secondary	10253629	OR
133V00000X	Registered Dietitian	Primary	—	—

RD — Registered Dietitian: A nutrition professional credentialed by the Commission on Dietetic Registration. About the RD credential

Copy-ready billing details

Provider: Joel Duling, RD
NPI: 1184397176
Taxonomy: 133V00000X (Registered Dietitian)
Address: 1200 HILYARD ST STE 550, Eugene, OR, 97401

Other providers at this practice address

NPI	Name	Type	Specialty	Location
1902846702	Noriko Delacruz	Individual	Registered Dietitian	Eugene, OR
1609092527	Cascade Surgical Oncology, PC	Organization	Surgical Oncology Physician	Eugene, OR
1124683941	Aleksandra Sliwinska	Individual	Endocrinology, Diabetes & Metabolism Physician	Eugene, OR

Verify this record

Cross-check NPI 1184397176 against the authoritative CMS record: view Joel Daniel Duling 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

What specialty is Joel Duling?

Joel Duling is registered in NPPES with the primary taxonomy of Registered Dietitian. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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.

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2025-04-16.