Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ms. Sandra Jill Margolis, N.P.

Family Nurse Practitioner in Winchester, MA · enumerated 2007.

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

National Provider Identifier

1669518247

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Registry record

Entity type Individual (Type 1)

Name Ms. Sandra Jill Margolis

Credential N.P.

Sex Female

Practice address 259 Swanton St Ste A, Winchester, MA, 01890

Phone (781) 721-4616

Enumeration date Jan 30, 2007

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 232926 (MA) Primary

NP · Nurse Practitioner: An advanced practice registered nurse with graduate training, licensed to diagnose and treat, often with prescriptive authority. About the NP credential

Other identifiers

Identifier	Type	State	Issuer
NP2535	Other	MA	BCBSMA
0393941	Other	MA	MASSHEALTH

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

Is NPI 1669518247 active?

Yes, as of the latest NPPES snapshot, NPI 1669518247 is active (record last updated 2007-07-08).

How do I verify Sandra Margolis's NPI record?

Cross-check NPI 1669518247 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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