NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Perry R Koseff, DO

Family Medicine Physician in Long Beach, CA · enumerated 2006 · practices at Prohealth Partners A Medical Group Inc.

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

National Provider Identifier

1790709186

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Perry R Koseff
Credential DO
Sex Male
Practice address 300 Redondo Ave, Long Beach, CA, 90814
Phone (562) 439-6966
Enumeration date Jul 27, 2006
Last updated in NPPES Sep 7, 2007

Taxonomy & licenses

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License 20A4371 (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

What is the NPI number for Perry Koseff?
The National Provider Identifier (NPI) for Perry Koseff is 1790709186, a Type 1 (individual) record in the CMS NPPES registry.
Where does Perry Koseff practice?
The practice location on file with NPPES is in Long Beach, CA. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-09-07.