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Alexandra Michelle Arenson, DO

Addiction Medicine (Family Medicine) Physician in Walnut Creek, CA · enumerated 2018.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1689170573

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Registry record

Entity type Individual (Type 1)
Name Alexandra Michelle Arenson
Credential DO
Sex Female
Practice address 710 S Broadway Ste 209, Walnut Creek, CA, 94596
Phone (925) 295-4145
Enumeration date Apr 1, 2018
Last updated in NPPES Aug 31, 2022

Taxonomy & licenses

207QA0401X Addiction Medicine (Family Medicine) Physician Allopathic & Osteopathic Physicians · License 20A17977 (CA) Primary
DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO 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

Where does Alexandra Arenson practice?
The practice location on file with NPPES is in Walnut Creek, CA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Alexandra Arenson?
The National Provider Identifier (NPI) for Alexandra Arenson is 1689170573, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-08-31.