Karen St Hilaire
NPI 1598154734 · Family Nurse Practitioner · Lancaster, CA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Karen St Hilaire is a Family Nurse Practitioner provider in Lancaster, CA (NPI 1598154734).
Provider details
- NPI number
- 1598154734
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Sex
- Female
- Sole proprietor
- Yes
- License
- 95001020 (CA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Physician Assistants & Advanced Practice Nursing Providers
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
11 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
- 2015-01-12
- Last updated
- 2024-04-03
- Certified
- 2024-04-03
Frequently asked questions
- What is Karen St Hilaire's NPI number?
- Karen St Hilaire's National Provider Identifier (NPI) is 1598154734, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Karen St Hilaire's specialty?
- Karen St Hilaire is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Karen St Hilaire located?
- Karen St Hilaire's practice location on file with NPPES is 335 E Avenue I, Lancaster, CA 93535-1916.
- What is Karen St Hilaire's phone number?
- The practice phone number listed in the NPPES registry for Karen St Hilaire is (661) 471-4000.
- Does Karen St Hilaire accept Medicare?
- Karen St Hilaire is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Karen St Hilaire's NPI active?
- Yes — Karen St Hilaire's NPI (1598154734) is active in the NPPES registry as of the last update on 2024-04-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.