Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Ms. Nancy Sacks, MSW
Social Worker in Northfield, IL · enumerated 2012.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1205171931
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Registry record
Entity type Individual (Type 1)
Name Ms. Nancy Sacks
Credential MSW
Sex Female
Practice address 161 Northfield Rd, Northfield, IL, 60093
Phone (847) 784-6000
Enumeration date Dec 6, 2012
Last updated in NPPES Dec 6, 2012
Taxonomy & licenses
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.
Frequently asked questions
Is NPI 1205171931 active?
Yes, as of the latest NPPES snapshot, NPI 1205171931 is active (record last updated 2012-12-06).
How do I verify Nancy Sacks's NPI record?
Cross-check NPI 1205171931 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Other providers at this practice address
Browse all → Carol Carpenter Clinical Social Worker · Northfield, IL NPI 1396928156 North Shore Senior Center Case Manager/Care Coordinator · Northfield, IL NPI 1912259425 Katherine Honeywell Clinical Social Worker · Northfield, IL NPI 1073858023 Heather Resnick Social Worker · Northfield, IL NPI 1316282114 Amy Nathan Professional Counselor · Northfield, IL NPI 1861737652 Anna Denenberg Case Manager/Care Coordinator · Northfield, IL NPI 1457696213 Kimberly Hand Case Manager/Care Coordinator · Northfield, IL NPI 1013252709 Zhenya Vitkov Case Manager/Care Coordinator · Northfield, IL NPI 1760727473
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-12-06.