Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Matthew Janiga, M.D.
Urology Physician in Auburn, CA · enumerated 2007.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1891912259
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Registry record
Entity type Individual (Type 1)
Name Dr. Matthew Janiga
Credential M.D.
Sex Male
Practice address 3123 Professional Dr, Suite 210, Auburn, CA, 95603
Phone (530) 745-0500
Fax (530) 745-0520
Enumeration date Apr 19, 2007
Last updated in NPPES Jul 29, 2015
Taxonomy & licenses
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.
Frequently asked questions
Is NPI 1891912259 active?
Yes, as of the latest NPPES snapshot, NPI 1891912259 is active (record last updated 2015-07-29).
How do I verify Matthew Janiga's NPI record?
Cross-check NPI 1891912259 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-07-29.