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Dr. Marc Harris Grusensky, MD

Psychiatry Physician in Commack, NY · enumerated 2007 · practices at Mindful Therapy Lcsw, Pllc.

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

National Provider Identifier

1578620225

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Registry record

Entity type Individual (Type 1)
Name Dr. Marc Harris Grusensky
Credential MD
Sex Male
Practice address 2171 Jericho Turnpike, Suite 210, Commack, NY, 11725
Phone (631) 499-4224
Fax (631) 499-1535
Enumeration date Jan 2, 2007
Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

2084P0800X Psychiatry Physician Allopathic & Osteopathic Physicians · License 119135 (NY) Primary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier Type State Issuer
1191352 Other - WCB

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 Marc Grusensky practice?
The practice location on file with NPPES is in Commack, NY. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Marc Grusensky?
The National Provider Identifier (NPI) for Marc Grusensky is 1578620225, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.