NPI Portal NPI Lookup & Verification

Dr. Stephen Michael Feinberg, MD

Dr. Stephen Michael Feinberg is a Urology Physician provider (Urology) practicing in Oxnard, CA, registered in the NPPES registry with NPI 1851390082 since 2005. The credential MD stands for Doctor of Medicine.

✓ Active NPI ✓ Valid NPI checksum Sole proprietor

NPI 1851390082
Entity type Individual (Type 1)
Name Dr. Stephen Michael Feinberg
Credential MD
Sex Male
Practice address Oxnard, CA, 93036
Phone 8059830358
Fax 8059819891
Enumeration date 2005-07-19
Last updated in NPPES 2019-05-22

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

Taxonomy & licenses

Taxonomy code Specialty Primary License State
174400000X Specialist Secondary G47858 CA
208800000X Urology Physician Primary G47858 CA

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

Copy-ready billing details
Provider: Stephen Feinberg, MD
NPI: 1851390082
Taxonomy: 208800000X (Urology Physician)
Address: Oxnard, CA, 93036

Other providers at this practice address

NPI Name Type Specialty Location
1366414740 Raymond Digiglio Individual General Practice Dentistry Oxnard, CA
1699707307 Robert Valdez Individual General Practice Dentistry Oxnard, CA
1659465110 Eduardo Lopez Individual Pediatric Dentistry Oxnard, CA
1528153921 Benjamin Pecht Individual Pediatric Adolescent Medicine Physician Oxnard, CA
1770678070 David Blank Individual Pediatric Adolescent Medicine Physician Oxnard, CA
1497849434 Catherine Hanson Individual Physical Therapist Oxnard, CA
1730273780 Dave Dye Individual Physical Therapist Oxnard, CA
1558456996 Robert Fostakowsky Individual Pediatric Adolescent Medicine Physician Oxnard, CA

Verify this record

Cross-check NPI 1851390082 against the authoritative CMS record: view Dr. Stephen Michael Feinberg on the official NPPES registry .

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 or validate an NPI number.

Frequently asked questions

How do I verify Stephen Feinberg's NPI record?
Cross-check NPI 1851390082 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1851390082 active?
Yes — as of the latest NPPES snapshot, NPI 1851390082 is active (record last updated 2019-05-22).

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2019-05-22.