Sidney Cassell, MD
NPI 1376614107 · Rheumatology Physician · Eugene, OR
Enrolled with Medicare as Practitioner - Rheumatology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Sidney Cassell, MD is a Rheumatology Physician provider in Eugene, OR (NPI 1376614107).
Provider details
- NPI number
- 1376614107
- Entity type
- Individual
- Primary specialty
- Rheumatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- MD11360 (OR)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-11-13
- Last updated
- 2010-07-13
Frequently asked questions
- What is Sidney Cassell's NPI number?
- Sidney Cassell's National Provider Identifier (NPI) is 1376614107, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sidney Cassell's specialty?
- Sidney Cassell is listed in the NPPES registry with a primary specialty of Rheumatology Physician (Allopathic & Osteopathic Physicians).
- Where is Sidney Cassell located?
- Sidney Cassell's practice location on file with NPPES is 132 E Broadway, Eugene, OR 97401-3160.
- What is Sidney Cassell's phone number?
- The practice phone number listed in the NPPES registry for Sidney Cassell is (541) 687-0816.
- Does Sidney Cassell accept Medicare?
- Sidney Cassell is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Sidney Cassell's NPI active?
- Yes — Sidney Cassell's NPI (1376614107) is active in the NPPES registry as of the last update on 2010-07-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.