Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Ms. Joan Merlo, LCSW, MSW
Counselor in Glencoe, IL · enumerated 2008.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1538345806
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Registry record
Entity type Individual (Type 1)
Name Ms. Joan Merlo
Credential LCSW, MSW
Sex Female
Practice address 675 Village Ct, Glencoe, IL, 60022
Phone (847) 835-5111
Enumeration date Jan 16, 2008
Last updated in NPPES Jan 16, 2008
Taxonomy & licenses
LCSW · Licensed Clinical Social Worker: A social worker licensed for clinical practice including mental-health therapy.
About the LCSW 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.
Frequently asked questions
What specialty is Joan Merlo?
Joan Merlo is registered in NPPES with the primary taxonomy of Counselor. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
Other providers at this practice address
Browse all → Village of Glencoe Land Ambulance · Glencoe, IL NPI 1659392850 Family Service of Glencoe Counselor · Glencoe, IL NPI 1518044890 Nancy Sutherland Counselor · Glencoe, IL NPI 1538345905 Alec Ross Clinical Social Worker · Glencoe, IL NPI 1760629117 Tami Sollo Clinical Social Worker · Glencoe, IL NPI 1013144112 Emily Mysel Clinical Social Worker · Glencoe, IL NPI 1982194882 Ana Carolina Richter Da Fonseca Balthazar Marriage & Family Therapist · Glencoe, IL NPI 1154158855
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-01-16.