Karen Marhoffer, MSN, APRN, FNP
Family Nurse Practitioner · Northridge, CA
Karen Marhoffer, MSN, APRN, FNP is a family nurse practitioner with a practice address in Northridge, California, and NPI 1194512178, issued on Apr 22, 2025. Check the license (California 95026455, as entered in NPPES) with the California board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Karen Marhoffer
- Credential
- MSN, APRN, FNP
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License number
- 95026455 CA
Self-reported in NPPES; status is on the state search - Practice location
- 19871 Nordhoff St, Northridge, CA 91324
- Phone
- (818) 359-8833
- Enumerated
- Apr 22, 2025
- Record last updated
- Aug 4, 2026
- Entity
- Type 1 · individual
8 nearest family nurse practitioner records → All 16,966 in California → Look up another NPI →
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A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Karen Marhoffer in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 95026455Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Karen Marhoffer among 16,966 family nurse practitioner records in California
Karen Marhoffer, MSN, APRN, FNP is one of 16,966 family nurse practitioner records with a practice address in California. 67% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2025, is newer than 90% of them.
- NPI issued2025 · 90% of these records are older, 3% newer
- In a Medicare fileNo · 67% of these records are
- In the CMS Doctors and Clinicians fileNo · 40% of these records are
- Record last updated2026 · 42% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LF0000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
67 family nurse practitioner records list a practice address in Northridge
They are 67 of the 2,598 NPPES records with a practice address in Northridge, and 16,966 family nurse practitioner records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 16,966 in California → Every provider in Northridge → Family Nurse Practitioner nationwide →
The 8 family nurse practitioner records with the nearest ZIP codes
- Dina Agazaryan, FNPNorthridge, CA 913241376829747
- John Bell, FNP-CNorthridge, CA 913241811432172
- Anisha Dua, FNPNorthridge, CA 913241750403044
- Kathryn Erhahon-Ilen-Otuma, FNPNorthridge, CA 913241770209025
- Aldo Espinoza, NPNorthridge, CA 913241336707496
- Linda Fernandez, NPNorthridge, CA 913241265274294
- Arcel Annabelle Ho, FNPNorthridge, CA 913241235811225
- Syuzanna Karapetyan, FNPNorthridge, CA 913241689442535
Common questions
What is Karen Marhoffer, MSN, APRN, FNP's NPI number?
Karen Marhoffer, MSN, APRN, FNP's National Provider Identifier (NPI) is 1194512178, issued on Apr 22, 2025. An NPI identifies a provider in billing; it is not a license.
Where is Karen Marhoffer, MSN, APRN, FNP located?
The NPPES record lists a practice address at 19871 Nordhoff St, Northridge, CA, 91324. Phone: (818) 359-8833. Providers update this record themselves, so call before visiting.
How can I verify Karen Marhoffer, MSN, APRN, FNP's license?
NPPES lists California license number 95026455, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.