Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Mr. Daniel Greenfield, RPH
Pharmacist in Boston, MA · enumerated 2021.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1255920666
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Registry record
Entity type Individual (Type 1)
Name Mr. Daniel Greenfield
Credential RPH
Sex Male
Practice address 59 Charles St, Boston, MA, 02114
Phone (617) 227-0023
Enumeration date Jan 12, 2021
Last updated in NPPES Jan 12, 2021
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 is the NPI number for Daniel Greenfield?
The National Provider Identifier (NPI) for Daniel Greenfield is 1255920666, a Type 1 (individual) record in the CMS NPPES registry.
Where does Daniel Greenfield practice?
The practice location on file with NPPES is in Boston, MA. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-01-12.