Fiona Wertheimer, D.O.
NPI 1174672885 · Neonatal-Perinatal Medicine Physician · Los Angeles, CA
Enrolled with Medicare as Order and Referring Only - Pediatric Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Fiona Wertheimer, D.O. is a Neonatal-Perinatal Medicine Physician provider in Los Angeles, CA (NPI 1174672885).
Provider details
- NPI number
- 1174672885
- Entity type
- Individual
- Primary specialty
- Neonatal-Perinatal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Female
- Sole proprietor
- No
- License
- 20A10827 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
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.
$165 across 5 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
- 2007-01-10
- Last updated
- 2024-06-28
- Certified
- 2024-06-28
Frequently asked questions
- What is Fiona Wertheimer's NPI number?
- Fiona Wertheimer's National Provider Identifier (NPI) is 1174672885, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Fiona Wertheimer's specialty?
- Fiona Wertheimer is listed in the NPPES registry with a primary specialty of Neonatal-Perinatal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Fiona Wertheimer located?
- Fiona Wertheimer's practice location on file with NPPES is 2020 Zonal Ave, Los Angeles, CA 90033-1019.
- What is Fiona Wertheimer's phone number?
- The practice phone number listed in the NPPES registry for Fiona Wertheimer is (323) 226-3406.
- Does Fiona Wertheimer accept Medicare?
- Fiona Wertheimer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Fiona Wertheimer's NPI active?
- Yes — Fiona Wertheimer's NPI (1174672885) is active in the NPPES registry as of the last update on 2024-06-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.