Granville Marshall, M.D.
NPI 1477761765 · Internal Medicine Physician · Susanville, CA
Granville Marshall, M.D. is a Internal Medicine Physician provider in Susanville, CA (NPI 1477761765).
Provider details
- NPI number
- 1477761765
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- A70232 (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
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
- 2007-05-18
- Last updated
- 2012-11-21
Frequently asked questions
- What is Granville Marshall's NPI number?
- Granville Marshall's National Provider Identifier (NPI) is 1477761765, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Granville Marshall's specialty?
- Granville Marshall is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Granville Marshall located?
- Granville Marshall's practice location on file with NPPES is 170 Russell Ave, Susanville, CA 96130-4282.
- What is Granville Marshall's phone number?
- The practice phone number listed in the NPPES registry for Granville Marshall is (530) 313-5529.
- Is Granville Marshall's NPI active?
- Yes — Granville Marshall's NPI (1477761765) is active in the NPPES registry as of the last update on 2012-11-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.