Roy Shannon, MD
NPI 1104880335 · Internal Medicine Physician · Oroville, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Roy Shannon, MD is a Internal Medicine Physician provider in Oroville, CA (NPI 1104880335).
Provider details
- NPI number
- 1104880335
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- License
- C35734 (CA)
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
20 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
- 2006-04-14
- Last updated
- 2023-03-07
Frequently asked questions
- What is Roy Shannon's NPI number?
- Roy Shannon's National Provider Identifier (NPI) is 1104880335, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Roy Shannon's specialty?
- Roy Shannon is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Roy Shannon located?
- Roy Shannon's practice location on file with NPPES is 2721 Olive Hwy, Oroville, CA 95966.
- What is Roy Shannon's phone number?
- The practice phone number listed in the NPPES registry for Roy Shannon is (530) 533-6061.
- Does Roy Shannon accept Medicare?
- Roy Shannon is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Roy Shannon's NPI active?
- Yes — Roy Shannon's NPI (1104880335) is active in the NPPES registry as of the last update on 2023-03-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.