Nancy Maillefer, PHARMD
NPI 1558446781 · Clinical Pharmacology Physician · Costa Mesa, CA
Nancy Maillefer, PHARMD is a Clinical Pharmacology Physician provider in Costa Mesa, CA (NPI 1558446781).
Provider details
- NPI number
- 1558446781
- Entity type
- Individual
- Primary specialty
- Clinical Pharmacology PhysicianAllopathic & Osteopathic Physicians
- Credential
- PHARMD
- Sex
- Female
- Sole proprietor
- No
- License
- 41171 (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
19 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
- 2006-10-26
- Last updated
- 2008-08-27
Frequently asked questions
- What is Nancy Maillefer's NPI number?
- Nancy Maillefer's National Provider Identifier (NPI) is 1558446781, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nancy Maillefer's specialty?
- Nancy Maillefer is listed in the NPPES registry with a primary specialty of Clinical Pharmacology Physician (Allopathic & Osteopathic Physicians).
- Where is Nancy Maillefer located?
- Nancy Maillefer's practice location on file with NPPES is 1665 Scenic Ave Ste 100, Costa Mesa, CA 92626-1443.
- What is Nancy Maillefer's phone number?
- The practice phone number listed in the NPPES registry for Nancy Maillefer is (714) 436-4700.
- Is Nancy Maillefer's NPI active?
- Yes — Nancy Maillefer's NPI (1558446781) is active in the NPPES registry as of the last update on 2008-08-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.