Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Abel Vincent Grebenik
Counselor in San Francisco, CA · enumerated 2008.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1659520120
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Registry record
Entity type Individual (Type 1)
Name Abel Vincent Grebenik
Sex Male
Practice address 1390 Market St Ste 800, San Francisco, CA, 94102
Phone (141) 525-5293
Enumeration date Sep 9, 2008
Last updated in NPPES Oct 29, 2010
Taxonomy & licenses
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
What is the NPI number for Abel Grebenik?
The National Provider Identifier (NPI) for Abel Grebenik is 1659520120, a Type 1 (individual) record in the CMS NPPES registry.
Where does Abel Grebenik practice?
The practice location on file with NPPES is in San Francisco, CA. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-10-29.