Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Margaret A Lynch, APRN

Nurse Practitioner in Cambridge, MA · enumerated 2007.

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

National Provider Identifier

1346466216

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Registry record

Entity type Individual (Type 1)

Name Margaret A Lynch

Credential APRN

Sex Female

Practice address 1493 Cambridge St, Zinberg Clinic, Cambridge, MA, 02139

Phone (617) 665-1606

Enumeration date Apr 18, 2007

Last updated in NPPES Nov 6, 2007

Taxonomy & licenses

363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 96828 (MA) Primary

APRN · Advanced Practice Registered Nurse: An umbrella credential covering NPs, CRNAs, CNMs, and clinical nurse specialists. About the APRN credential

Other identifiers

Identifier	Type	State	Issuer
NP1981	Other	MA	BCBS MA

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

What is the NPI number for Margaret Lynch?

The National Provider Identifier (NPI) for Margaret Lynch is 1346466216, a Type 1 (individual) record in the CMS NPPES registry.

Where does Margaret Lynch practice?

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

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-11-06.