NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Fredrick J Menninger III, M.D.

Sports Medicine (Orthopaedic Surgery) Physician in Ventura, CA · enumerated 2006 · practices at Petros K. Frousiakis, D.O., A Professional Corporation.

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

National Provider Identifier

1275599177

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Dr. Fredrick J Menninger III
Credential M.D.
Sex Male
Practice address 168 N Brent St Ste 302, Ventura, CA, 93003
Enumeration date Apr 21, 2006
Last updated in NPPES Mar 8, 2021

Taxonomy & licenses

207XX0005X Sports Medicine (Orthopaedic Surgery) Physician Allopathic & Osteopathic Physicians · License G62562 (CA) Primary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD 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

Where does Fredrick Menninger practice?
The practice location on file with NPPES is in Ventura, CA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Fredrick Menninger?
The National Provider Identifier (NPI) for Fredrick Menninger is 1275599177, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-03-08.