Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Marc Grun, RPH
Pharmacist in Altadena, CA · enumerated 2010.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1720301500
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Registry record
Entity type Individual (Type 1)
Name Marc Grun
Credential RPH
Sex Male
Practice address 1190 E Palm St, Altadena, CA, 91001
Phone (845) 598-0688
Enumeration date Mar 8, 2010
Last updated in NPPES Sep 23, 2024
Taxonomy & licenses
RPH · Registered Pharmacist: A licensed pharmacist registered with a state board of pharmacy.
About the RPH 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
What specialty is Marc Grun?
Marc Grun is registered in NPPES with the primary taxonomy of Pharmacist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-09-23.