Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

E Benjamin Greenleaf, RPH

Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist in Cambridge, MA · enumerated 2020 · practices at Cvs Pharmacy Inc.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1790380327

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name E Benjamin Greenleaf

Credential RPH

Sex Male

Practice address Cambridge, MA, 02138

Phone (617) 661-6422

Enumeration date Dec 1, 2020

Last updated in NPPES Dec 1, 2020

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

1835P0018X Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist Pharmacy Service Providers · License PH25461 (MA) Primary

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.

Read the full guide → Validate an NPI →

Frequently asked questions

Where does E Benjamin Greenleaf practice?

The practice location on file with NPPES is in Cambridge, MA. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for E Benjamin Greenleaf?

The National Provider Identifier (NPI) for E Benjamin Greenleaf is 1790380327, 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 2020-12-01.