NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ms. Joan Monahan, R.N.

Case Manager/Care Coordinator in Boston, MA · enumerated 2007.

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

National Provider Identifier

1598898256

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Ms. Joan Monahan
Credential R.N.
Sex Female
Practice address 55 Fruit St, Mgh, Social Service, Boston, MA, 02114
Phone (617) 724-0059
Fax (617) 726-7676
Enumeration date Mar 13, 2007
Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

171M00000X Case Manager/Care Coordinator Other Service Providers · License 137561 (MA) Primary
RN · Registered Nurse: A nurse who completed an accredited nursing program and passed the NCLEX-RN licensure exam. About the RN 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

How do I verify Joan Monahan's NPI record?
Cross-check NPI 1598898256 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1598898256 active?
Yes, as of the latest NPPES snapshot, NPI 1598898256 is active (record last updated 2007-07-08).

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.