Bruce Dreyfuss, M.D.
NPI 1558366047 · Rheumatology Physician · San Jose, CA
Enrolled with Medicare as Practitioner - Rheumatology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Bruce Dreyfuss, M.D. is a Rheumatology Physician provider in San Jose, CA (NPI 1558366047).
Provider details
- NPI number
- 1558366047
- Entity type
- Individual
- Primary specialty
- Rheumatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- G64297 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Technologists, Technicians & Other Technical Service Providers
Ambulatory Health Care Facilities
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
21 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.
$111 across 2 records (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
- 2005-06-20
- Last updated
- 2009-02-05
Frequently asked questions
- What is Bruce Dreyfuss's NPI number?
- Bruce Dreyfuss's National Provider Identifier (NPI) is 1558366047, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Bruce Dreyfuss's specialty?
- Bruce Dreyfuss is listed in the NPPES registry with a primary specialty of Rheumatology Physician (Allopathic & Osteopathic Physicians).
- Where is Bruce Dreyfuss located?
- Bruce Dreyfuss's practice location on file with NPPES is 25 N 14th St, San Jose, CA 95112-6216.
- What is Bruce Dreyfuss's phone number?
- The practice phone number listed in the NPPES registry for Bruce Dreyfuss is (408) 288-6623.
- Does Bruce Dreyfuss accept Medicare?
- Bruce Dreyfuss is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Bruce Dreyfuss's NPI active?
- Yes — Bruce Dreyfuss's NPI (1558366047) is active in the NPPES registry as of the last update on 2009-02-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.