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Iris Rebecca Lowenberg-Lin, FNP

Family Nurse Practitioner in Mill Valley, CA · enumerated 2012.

Data current as of Jul 11, 2026 · sourced from CMS NPPES

National Provider Identifier

1952661985

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Registry record

Entity type Individual (Type 1)
Name Iris Rebecca Lowenberg-Lin
Credential FNP
Sex Female
Practice address 750 Redwood Hwy Frontage Rd Ste 1210, Mill Valley, CA, 94941
Phone (888) 663-6331
Enumeration date May 24, 2012
Last updated in NPPES Aug 21, 2023

Taxonomy & licenses

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 21843 (CA) Primary
FNP — Family Nurse Practitioner: A nurse practitioner certified in family practice across the lifespan. About the FNP credential

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes — even if the provider moves or changes specialty.

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Frequently asked questions

Is NPI 1952661985 active?
Yes — as of the latest NPPES snapshot, NPI 1952661985 is active (record last updated 2023-08-21).
How do I verify Iris Lowenberg-Lin's NPI record?
Cross-check NPI 1952661985 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2023-08-21.