Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Mara Fox, CNM, RN

Q: What is the NPI number for Mara Fox?

The National Provider Identifier (NPI) for Mara Fox is 1659779312, a Type 1 (individual) record in the CMS NPPES registry.

Advanced Practice Midwife in San Francisco, CA · enumerated 2014.

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

National Provider Identifier

1659779312

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Registry record

Entity type Individual (Type 1)

Name Mara Fox

Credential CNM, RN

Sex Female

Practice address San Francisco, CA, 94117

Phone (202) 557-9800

Enumeration date Dec 12, 2014

Last updated in NPPES Feb 11, 2022

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

367A00000X Advanced Practice Midwife Physician Assistants & Advanced Practice Nursing Providers · License 235714 (CA) Primary

CNM · Certified Nurse Midwife: An advanced practice nurse specializing in pregnancy, childbirth, and reproductive care. About the CNM 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.

Read the full guide → Validate an NPI →

Frequently asked questions

What is the NPI number for Mara Fox?

The National Provider Identifier (NPI) for Mara Fox is 1659779312, a Type 1 (individual) record in the CMS NPPES registry.

Where does Mara Fox practice?

The practice location on file with NPPES is in San Francisco, CA. Providers can have multiple locations; NPPES lists the primary practice address.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-02-11.