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

Dr. Greta Carlson, PSY.D.

Psychologist in Chevy Chase, MD · enumerated 2019.

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

National Provider Identifier

1538705231

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Registry record

Entity type Individual (Type 1)

Name Dr. Greta Carlson

Credential PSY.D.

Sex Female

Practice address Chevy Chase, MD, 20815

Phone (301) 938-8431

Enumeration date Nov 18, 2019

Last updated in NPPES Feb 26, 2026

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

Taxonomy & licenses

103T00000X Psychologist Behavioral Health & Social Service Providers · License PY61681470 (WA) Secondary

103T00000X Psychologist Behavioral Health & Social Service Providers · License 0810007878 (VA) Secondary

103T00000X Psychologist Behavioral Health & Social Service Providers · License PSY200001358 (DC) Secondary

103T00000X Psychologist Behavioral Health & Social Service Providers · License 06762 (MD) Primary

PSYD · Doctor of Psychology: A clinical doctorate in psychology focused on professional practice. About the PSYD 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.

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Frequently asked questions

Where does Greta Carlson practice?

The practice location on file with NPPES is in Chevy Chase, MD. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Greta Carlson?

The National Provider Identifier (NPI) for Greta Carlson is 1538705231, a Type 1 (individual) record in the CMS NPPES registry.

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Katrin J Haller Msw Lcswc LLC Clinical Social Worker · Chevy Chase, MD NPI 1225528573 Anne Adelman Psychologist · Chevy Chase, MD NPI 1184254328 Amanda Rhodes Clinical Psychologist · Chevy Chase, MD NPI 1982367561 Bethesda-Chevy Chase Psychological Services LLC Mental Health Clinic/Center (Including Community Mental Health Center) · Chevy Chase, MD NPI 1497529879 Alaina Carr Clinical Psychologist · Chevy Chase, MD NPI 1194590828

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-02-26.