Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Mr. Robert Michael Greczanik, LAC
Acupuncturist in Bellevue, WA · enumerated 2007.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1821215591
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Registry record
Entity type Individual (Type 1)
Name Mr. Robert Michael Greczanik
Credential LAC
Sex Male
Practice address 2025 112th Ave Ne Ste 301, Bellevue, WA, 98004
Phone (425) 454-7472
Fax (424) 454-7471
Enumeration date Apr 20, 2007
Last updated in NPPES Jul 8, 2007
Taxonomy & licenses
LAC · Licensed Acupuncturist: A practitioner licensed to perform acupuncture.
About the LAC 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
Where does Robert Greczanik practice?
The practice location on file with NPPES is in Bellevue, WA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Robert Greczanik?
The National Provider Identifier (NPI) for Robert Greczanik is 1821215591, a Type 1 (individual) record in the CMS NPPES registry.
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.