Catherine Mazzei, MD
NPI 1750802013 · Blood Banking & Transfusion Medicine Physician · Oakland, CA
Catherine Mazzei, MD is a Blood Banking & Transfusion Medicine Physician provider in Oakland, CA (NPI 1750802013).
Provider details
- NPI number
- 1750802013
- Entity type
- Individual
- Primary specialty
- Blood Banking & Transfusion Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- G78127 (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
9 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
- 2017-06-27
- Last updated
- 2022-07-21
Frequently asked questions
- What is Catherine Mazzei's NPI number?
- Catherine Mazzei's National Provider Identifier (NPI) is 1750802013, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Catherine Mazzei's specialty?
- Catherine Mazzei is listed in the NPPES registry with a primary specialty of Blood Banking & Transfusion Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Catherine Mazzei located?
- Catherine Mazzei's practice location on file with NPPES is 6230 Claremont Ave, Oakland, CA 94618-1324.
- What is Catherine Mazzei's phone number?
- The practice phone number listed in the NPPES registry for Catherine Mazzei is (510) 594-5265.
- Is Catherine Mazzei's NPI active?
- Yes — Catherine Mazzei's NPI (1750802013) is active in the NPPES registry as of the last update on 2022-07-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.