Provider Profile
Karen Merzenich, CNM, WHNP is an advanced practice midwife practicing in Napa, CA. Karen is also listed as specializing in registered nurse and nurse practitioner — women's health. This provider record is associated with NPI 1003586363.
Factual summary compiled by Guide.md from public records; not written by this provider.
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
300 HARTLE CT
Napa, CA 94559
Karen Merzenich, CNM is an advanced practice midwife in Napa, CA. That is the designation recorded for this NPI in the federal registry.
NPI registry
Karen Merzenich, CNM is listed at 300 Hartle CT, Napa, CA 94559. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
The number on file is (707) 254-1775. Contact the office directly to confirm availability and scheduling.
NPI registry
Karen Merzenich, CNM's National Provider Identifier is 1003586363. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Karen Merzenich, CNM has 5+ years experience. Registered with an NPI since 2021. National Provider Identifiers only began in 2005, so a provider who qualified earlier may have practiced for longer than this.
NPI registry
Not yet. This profile is built from public federal data and has not been confirmed by Karen Merzenich, CNM. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.