GREGORY V MALLIS PSY.D
NPI 1780022194
Psychologist in Grand Rapids, MI

Active since June 07, 2013PECOS EnrolledAccepts Medicare Assignment
1870 LEONARD ST SE, GRAND RAPIDS, MI 49505(616) 956-1122(616) 956-8033 Get Directions Write a Review

NPPES record last updated: June 7, 2013. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Gregory V Mallis Psy.d NPPES

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

GREGORY V MALLIS PSY.D (NPI 1780022194) is an individual psychologist in Grand Rapids, Michigan, licensed in Michigan (6301015440) and active in the NPI registry since June 2013. He is enrolled in Medicare PECOS and is a graduate of Other (2012).

NPPES Registry Identity

NPI1780022194
Entity TypeIndividualMale
Primary Taxonomy103T00000X
Provider Legal NameGREGORY V MALLISCredential: PSY.D
Location Address1870 LEONARD ST SEGrand Rapids, MI 49505-5650
Mailing Address1870 Leonard Street SeGrand Rapids, MI 49505-5650 · (616) 956-1122 · Fax (616) 956-8033
Fax(616) 956-8033
Sole ProprietorNo
Medical School CMSOtherGraduated 2012
Enumeration DateJune 7, 2013
NPI 1780022194 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyPsychologistBehavioral Health & Social Service Providers
Taxonomy Code103T00000X
License Licensed in MI · 6301015440
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.
1870 LEONARD ST SE, Grand Rapids, MI 49505

Accepted Insurance

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

Enrolled in Medicare and accepts Medicare assignment

Gregory V Mallis Psy.d is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID4789816299
PECOS Enrollment IDI20140416001116
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.

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 Gregory Mallis's NPI number?

The NPI number for Gregory Mallis is 1780022194. It was assigned to this individual provider in the NPPES registry on June 7, 2013.

Where is Gregory Mallis located?

Gregory Mallis practices at 1870 Leonard St SE, Grand Rapids, MI 49505. The listed phone number is (616) 956-1122.

What is Gregory Mallis's specialty?

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

Is Gregory Mallis enrolled in Medicare?

Yes. Gregory Mallis is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

What insurance does Gregory Mallis accept?

Health plans from Blue Care Network of Michigan, Blue Cross Blue Shield of Michigan Mutual Insurance Company, Oscar Insurance Company, Priority Health and UnitedHealthcare list Gregory Mallis as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Gregory Mallis was last updated on June 7, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.