NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Boris Reznik, M.D.

Gastroenterology Physician in Hanford, CA · enumerated 2006.

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

National Provider Identifier

1710087846

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Registry record

Entity type Individual (Type 1)
Name Boris Reznik
Credential M.D.
Sex Male
Practice address Hanford, CA, 93230
Phone (559) 589-9460
Fax (559) 589-9248
Enumeration date Sep 25, 2006
Last updated in NPPES Oct 8, 2008

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

Taxonomy & licenses

207RG0100X Gastroenterology Physician Allopathic & Osteopathic Physicians · License MD2005-0407 (NM) Secondary
207RG0100X Gastroenterology Physician Allopathic & Osteopathic Physicians · License A91193 (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

What is the NPI number for Boris Reznik?
The National Provider Identifier (NPI) for Boris Reznik is 1710087846, a Type 1 (individual) record in the CMS NPPES registry.
Where does Boris Reznik practice?
The practice location on file with NPPES is in Hanford, CA. Providers can have multiple locations; NPPES lists the primary practice address.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-10-08.