East Bay Rheumatology Medical Group, Inc.
NPI 1891930673 · Specialist · San Leandro, CA
Enrolled with Medicare as Part B Supplier - Clinic/Group Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
East Bay Rheumatology Medical Group, Inc. is a Specialist organization in San Leandro, CA (NPI 1891930673).
Provider details
- NPI number
- 1891930673
- Entity type
- Organization
- Primary specialty
- SpecialistOther Service Providers
- Organization subpart
- No
- Authorized official
- Clark Neuwelt, Doctor(510) 357-1303
- License
- G38264 (CA)
Specialties & taxonomies
Other Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
17 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
- 2008-12-09
- Last updated
- 2014-02-12
Frequently asked questions
- What is East Bay Rheumatology Medical Group, Inc.'s NPI number?
- East Bay Rheumatology Medical Group, Inc.'s National Provider Identifier (NPI) is 1891930673, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is East Bay Rheumatology Medical Group, Inc.?
- East Bay Rheumatology Medical Group, Inc. is classified in the NPPES registry as Specialist (Other Service Providers).
- Where is East Bay Rheumatology Medical Group, Inc. located?
- East Bay Rheumatology Medical Group, Inc.'s practice location on file with NPPES is 13851 E 14th St Ste 301, San Leandro, CA 94578-2630.
- What is East Bay Rheumatology Medical Group, Inc.'s phone number?
- The practice phone number listed in the NPPES registry for East Bay Rheumatology Medical Group, Inc. is (510) 357-1303.
- Does East Bay Rheumatology Medical Group, Inc. accept Medicare?
- East Bay Rheumatology Medical Group, Inc. is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Who is the authorized official for East Bay Rheumatology Medical Group, Inc.?
- The authorized official listed on East Bay Rheumatology Medical Group, Inc.'s NPPES record is Clark Neuwelt, Doctor. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is East Bay Rheumatology Medical Group, Inc.'s NPI active?
- Yes — East Bay Rheumatology Medical Group, Inc.'s NPI (1891930673) is active in the NPPES registry as of the last update on 2014-02-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.