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

Mrs. Cathryn B Johnson, LCSW

Addiction (Substance Use Disorder) Counselor in Atlanta, GA · enumerated 2006.

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

National Provider Identifier

1316048812

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Mrs. Cathryn B Johnson

Credential LCSW

Sex Female

Practice address Atlanta, GA, 30315

Phone (404) 767-3303

Fax (404) 767-3304

Enumeration date Sep 26, 2006

Last updated in NPPES Feb 24, 2010

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

Taxonomy & licenses

101YA0400X Addiction (Substance Use Disorder) Counselor Behavioral Health & Social Service Providers · License CSW1587 (GA) Secondary

101YA0400X Addiction (Substance Use Disorder) Counselor Behavioral Health & Social Service Providers · License CSW001587 (GA) Primary

LCSW · Licensed Clinical Social Worker: A social worker licensed for clinical practice including mental-health therapy. About the LCSW credential

Other identifiers

Identifier	Type	State	Issuer
000649305C	Medicaid	GA	-

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 Cathryn Johnson?

Cathryn Johnson is registered in NPPES with the primary taxonomy of Addiction (Substance Use Disorder) 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 →

Robert Marmer Ophthalmology Physician · Atlanta, GA NPI 1336231554

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-02-24.