Claudia Mazzei, NP
NPI 1104956135 · Family Nurse Practitioner · Torrance, CA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Claudia Mazzei, NP is a Family Nurse Practitioner provider in Torrance, CA (NPI 1104956135).
Provider details
- NPI number
- 1104956135
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- NP
- Sex
- Female
- Sole proprietor
- No
- License
- 14530 (CA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
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.
$29 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
- 2007-03-07
- Last updated
- 2008-12-22
Frequently asked questions
- What is Claudia Mazzei's NPI number?
- Claudia Mazzei's National Provider Identifier (NPI) is 1104956135, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Claudia Mazzei's specialty?
- Claudia Mazzei is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Claudia Mazzei located?
- Claudia Mazzei's practice location on file with NPPES is 1000 W Carson St, Torrance, CA 90502-2004.
- What is Claudia Mazzei's phone number?
- The practice phone number listed in the NPPES registry for Claudia Mazzei is (310) 222-8110.
- Does Claudia Mazzei accept Medicare?
- Claudia Mazzei is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Claudia Mazzei's NPI active?
- Yes — Claudia Mazzei's NPI (1104956135) is active in the NPPES registry as of the last update on 2008-12-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.