Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Daniel Frochtzwajg, D.O.

Family Medicine Physician in Marina Del Rey, CA · enumerated 2016 · practices at The Regents of the University of California.

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

National Provider Identifier

1679923742

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Registry record

Entity type Individual (Type 1)

Name Dr. Daniel Frochtzwajg

Credential D.O.

Sex Male

Practice address 4560 Admiralty Way Ste 100, Marina Del Rey, CA, 90292

Phone (310) 827-3700

Enumeration date Jun 20, 2016

Last updated in NPPES Dec 29, 2021

Taxonomy & licenses

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License 20A19174 (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.

Read the full guide → Validate an NPI →

Frequently asked questions

How do I verify Daniel Frochtzwajg's NPI record?

Cross-check NPI 1679923742 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1679923742 active?

Yes, as of the latest NPPES snapshot, NPI 1679923742 is active (record last updated 2021-12-29).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-12-29.