Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Mr. Gregory Dudley Watson, LCSW,LMFT,ACSW

Marriage & Family Therapist in Geneva, IL · enumerated 2006.

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

National Provider Identifier

1548277080

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Registry record

Entity type Individual (Type 1)

Name Mr. Gregory Dudley Watson

Credential LCSW,LMFT,ACSW

Sex Male

Practice address Geneva, IL, 60134

Phone (630) 232-1070

Fax (630) 232-1471

Enumeration date Aug 1, 2006

Last updated in NPPES Sep 11, 2025

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers Secondary

106H00000X Marriage & Family Therapist Behavioral Health & Social Service Providers Primary

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.

Read the full guide → Validate an NPI →

Frequently asked questions

What specialty is Gregory Watson?

Gregory Watson is registered in NPPES with the primary taxonomy of Marriage & Family Therapist. 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

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Gail Mastio Clinical Social Worker · Geneva, IL NPI 1730274804 Tricity Family Services Mental Health Clinic/Center (Including Community Mental Health Center) · Geneva, IL NPI 1598850778 Kathy Sobczak Gibson Mental Health Counselor · Geneva, IL NPI 1538236617 Sharon Koltis Professional Counselor · Geneva, IL NPI 1013121904 Catherine Hendricks Mental Health Counselor · Geneva, IL NPI 1245434729 Marianne Tomlinson Professional Counselor · Geneva, IL NPI 1568649572 Melissa Sofia Clinical Social Worker · Geneva, IL NPI 1275785859 Colleen Blake Clinical Social Worker · Geneva, IL NPI 1710298443

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-09-11.