Gregory Bell, MD
NPI 1053425116 · Rheumatology Physician · Tiburon, CA
Gregory Bell, MD is a Rheumatology Physician provider in Tiburon, CA (NPI 1053425116).
Provider details
- NPI number
- 1053425116
- Entity type
- Individual
- Primary specialty
- Rheumatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- G63151 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
19 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$150 across 1 record (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-08-18
- Last updated
- 2007-07-08
Frequently asked questions
- What is Gregory Bell's NPI number?
- Gregory Bell's National Provider Identifier (NPI) is 1053425116, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gregory Bell's specialty?
- Gregory Bell is listed in the NPPES registry with a primary specialty of Rheumatology Physician (Allopathic & Osteopathic Physicians).
- Where is Gregory Bell located?
- Gregory Bell's practice location on file with NPPES is 157 Trinidad Dr, Tiburon, CA 94920-1037.
- What is Gregory Bell's phone number?
- The practice phone number listed in the NPPES registry for Gregory Bell is (415) 435-6210.
- Is Gregory Bell's NPI active?
- Yes — Gregory Bell's NPI (1053425116) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.