NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Jeanne Frances Duffy, PHD

Sleep Specialist (PhD) in Boston, MA · enumerated 2010.

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

National Provider Identifier

1396048153

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Jeanne Frances Duffy
Credential PHD
Sex Female
Practice address 221 Longwood Ave, Bli438, Boston, MA, 02115
Fax (617) 732-4015
Enumeration date Dec 15, 2010
Last updated in NPPES Dec 15, 2010

Taxonomy & licenses

173F00000X Sleep Specialist (PhD) Other Service Providers Primary
PHD · Doctor of Philosophy: A doctoral degree; in healthcare often held by clinical psychologists and researchers. About the PHD 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 Jeanne Duffy practice?
The practice location on file with NPPES is in Boston, MA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Jeanne Duffy?
The National Provider Identifier (NPI) for Jeanne Duffy is 1396048153, 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 2010-12-15.