DR. GRETA CARLSON PSY.D.
NPI 1538705231
Psychologist in Chevy Chase, MD

Active since November 18, 2019Opted out of Medicare · through Apr 9, 2027
2 WISCONSIN CIR STE 915, CHEVY CHASE, MD 20815(301) 938-8431 Get Directions Write a Review

NPPES record last updated: February 26, 2026. Verified against the NPPES registry weekly; last sync: July 26, 2026.

Record update history: Aug 14, 2023, Oct 4, 2022, Sep 15, 2022 and 2 more (5 updates tracked since 2019).

About Dr. Greta Carlson Psy.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. GRETA CARLSON PSY.D. (NPI 1538705231) is an individual psychologist in Chevy Chase, Maryland, licensed in Maryland (06762) and active in the NPI registry since November 2019. She has opted out of Medicare through April 9, 2027 and remains eligible to order and refer.

NPPES Registry Identity

NPI1538705231
Entity TypeIndividualFemale
Primary Taxonomy103T00000X
Provider Legal NameDR. GRETA CARLSONCredential: PSY.D.
Location Address2 WISCONSIN CIR STE 915Chevy Chase, MD 20815-7036
Mailing Address4450 S Park Ave Apt 502Chevy Chase, MD 20815-3635 · (301) 938-8431
Sole ProprietorYes
Enumeration DateNovember 18, 2019
Last NPPES UpdateFebruary 26, 20265 updates tracked since enumeration
NPPES CertifiedFebruary 26, 2026
NPI 1538705231 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyPsychologistBehavioral Health & Social Service Providers
Taxonomy Code103T00000X
Licenses Licensed in MD · 06762 Licensed in WA · PY61681470 Licensed in VA · 0810007878 Licensed in DC · PSY200001358
Definition

A psychologist is an individual who is licensed to practice psychology which is defined as the observation, description, evaluation, interpretation, and modification of human behavior by the application of psychological principles, methods, and procedures, for the purpose of preventing or eliminating symptomatic, maladaptive, or undesired behavior and of enhancing interpersonal relationships, work and life adjustment, personal effectiveness, behavioral health, and mental health. The practice of psychology includes, but is not limited to, psychological testing and the evaluation or assessment of personal characteristics, such as intelligence, personality, abilities, interests, aptitudes, and neuropsychological functioning; counseling, psychoanalysis, psychotherapy, hypnosis, biofeedback, and behavior analysis and therapy; diagnosis and treatment of mental and emotional disorder or disability, alcoholism and substance abuse, disorders of habit or conduct, as well as of the psychological aspects of physical illness, accident, injury, or disability; and psycheducational evaluation, therapy, remediation, and consultation. Psychological services may be rendered to individuals, families, groups and the public.

2 WISCONSIN CIR STE 915, Chevy Chase, MD 20815

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

Opted out of Medicare

Dr. Greta Carlson Psy.d. has filed a Medicare opt-out affidavit. Services are provided under private contract between the provider and the patient, and are not billed to or reimbursed by Medicare. The opt-out is on file from April 9, 2023 through April 9, 2027.

Opt-Out Effective DateApril 9, 2023
Opt-Out In Effect ThroughApril 9, 2027Opt-out affidavits renew automatically every two years unless cancelled
Eligible to Order & Refer Part B Labs & Imaging Durable Medical Equipment Home Health Agency Power Mobility DevicesAn opted-out provider can still order and refer for Medicare patients in the categories marked above, even though their own services are not covered.

Other Providers at the Same Location NPPES 5

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

Social Worker (Clinical)
2 WISCONSIN CIR STE 915
CHEVY CHASE, MD 20815
Psychologist
2 WISCONSIN CIR STE 915
CHEVY CHASE, MD 20815
Clinic/Center (Mental Health (Including Community Mental Health Center))
2 WISCONSIN CIR STE 915
CHEVY CHASE, MD 20815
Psychologist (Clinical)
2 WISCONSIN CIR STE 915
CHEVY CHASE, MD 20815
Psychologist (Clinical)
2 WISCONSIN CIR STE 915
CHEVY CHASE, MD 20815

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Greta Carlson's NPI number?

The NPI number for Greta Carlson is 1538705231. It was assigned to this individual provider in the NPPES registry on November 18, 2019.

Where is Greta Carlson located?

Greta Carlson practices at 2 Wisconsin Cir Ste 915, Chevy Chase, MD 20815. The listed phone number is (301) 938-8431.

What is Greta Carlson's specialty?

The primary specialty registered for this NPI is Psychologist with taxonomy code 103T00000X.

Is Greta Carlson enrolled in Medicare?

No. Greta Carlson has opted out of Medicare through April 9, 2027. Care is provided under private contracts, and Medicare does not pay for services furnished by providers who have opted out. The provider remains eligible to order and refer services for Medicare patients.

When was this NPI record last updated?

The NPPES record for Greta Carlson was last updated on February 26, 2026. NPI Profile syncs with the weekly NPPES data releases published by CMS.