Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Koosha Mortazavi, M.D.

Nephrology Physician in Oxnard, CA · enumerated 2006 · practices at Vista Del Mar Medical Group, Inc.

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

National Provider Identifier

1215966999

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Registry record

Entity type Individual (Type 1)

Name Dr. Koosha Mortazavi

Credential M.D.

Sex Male

Practice address 1200 W Gonzales Rd, Suite 300, Oxnard, CA, 93036

Phone (805) 278-9094

Fax (805) 278-8964

Enumeration date Jul 3, 2006

Last updated in NPPES Jan 14, 2010

Taxonomy & licenses

207RN0300X Nephrology Physician Allopathic & Osteopathic Physicians · License A91559 (CA) Primary

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License A91559 (CA) Secondary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
ZZZ75566Z	Medicaid	CA	-
110039977	Other	CA	MEDICARE RAILROAD
ZZZ34679Z	Other	CA	BLUE CROSS

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 Koosha Mortazavi practice?

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

What is the NPI number for Koosha Mortazavi?

The National Provider Identifier (NPI) for Koosha Mortazavi is 1215966999, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Vista Del Mar Medical Group, Inc Nephrology Physician · Oxnard, CA NPI 1942239694 Jeima Wachowiak Nurse Practitioner · Oxnard, CA NPI 1376567933 Kathleen Smith Nurse Practitioner · Oxnard, CA NPI 1629080999 Ali Dana Nephrology Physician · Oxnard, CA NPI 1669561536 Tane Liu Nephrology Physician · Oxnard, CA NPI 1588738991 Aron Swerdlin Nephrology Physician · Oxnard, CA NPI 1346314754 Frank Chieu Nephrology Physician · Oxnard, CA NPI 1235203647 Steven Ledesma Nephrology Physician · Oxnard, CA NPI 1386718799

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-01-14.