DR. MARY ELIZABETH CROIS PSY.D.
NPI 1659453579
Psychologist in Glen Ellyn, IL

Active since October 19, 2006PECOS Enrolled
331 PHILLIPS AVE, GLEN ELLYN, IL 60137(630) 881-3894(630) 469-4945 Get Directions Write a Review

NPPES record last updated: July 8, 2007. Verified against the NPPES registry weekly; last sync: July 26, 2026.

About Dr. Mary Elizabeth Crois Psy.d. NPPES

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

DR. MARY ELIZABETH CROIS PSY.D. (NPI 1659453579) is an individual psychologist in Glen Ellyn, Illinois and active in the NPI registry since October 2006. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1659453579
Entity TypeIndividualFemale
Primary Taxonomy103T00000X
Provider Legal NameDR. MARY ELIZABETH CROISCredential: PSY.D.
Location Address331 PHILLIPS AVEGlen Ellyn, IL 60137-4938
Mailing Address331 Phillips AveGlen Ellyn, IL 60137-4938 · (630) 881-3894 · Fax (630) 469-4945
Fax(630) 469-4945
Sole ProprietorYes
Enumeration DateOctober 19, 2006
Last NPPES UpdateJuly 8, 2007
NPI 1659453579 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyPsychologistBehavioral Health & Social Service Providers
Taxonomy Code103T00000X
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.
331 PHILLIPS AVE, Glen Ellyn, IL 60137

Other Identifiers 1

Medicare ID-Type Unspecified449580IL

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

Enrolled in Medicare (PECOS)

Dr. Mary Elizabeth Crois Psy.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer Part B Labs & Imaging Durable Medical Equipment Home Health Agency Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Psychotherapy, 1 hour 90837
Psychotherapy is a therapeutic interaction or treatment between a trained professional and a patient. In a 1-hour session, you'll talk about your feelings, thoughts, and behaviors to help identify and manage mental health issues. This process aids in personal growth, healing, and improved well-being.
150 services18 patients

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 Mary Crois's NPI number?

The NPI number for Mary Crois is 1659453579. It was assigned to this individual provider in the NPPES registry on October 19, 2006.

Where is Mary Crois located?

Mary Crois practices at 331 Phillips Ave, Glen Ellyn, IL 60137. The listed phone number is (630) 881-3894.

What is Mary Crois's specialty?

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

Is Mary Crois enrolled in Medicare?

Yes. Mary Crois is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Mary Crois was last updated on July 8, 2007. NPI Profile syncs with the weekly NPPES data releases published by CMS.