Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Brett I. Greenberger, M.D.

Psychiatry Physician in Columbia, MD · enumerated 2006 · practices at Collaborative Counseling Tms.

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

National Provider Identifier

1073591558

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Registry record

Entity type Individual (Type 1)

Name Brett I. Greenberger

Credential M.D.

Sex Male

Practice address 8820 Columbia 100 Pkwy Ste 201, Columbia, MD, 21045

Phone (443) 546-4000

Fax (443) 546-4005

Enumeration date Jan 5, 2006

Last updated in NPPES Feb 13, 2026

Taxonomy & licenses

2084P0800X Psychiatry Physician Allopathic & Osteopathic Physicians · License DO061072 (MD) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD 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.

Read the full guide → Validate an NPI →

Frequently asked questions

What is the NPI number for Brett Greenberger?

The National Provider Identifier (NPI) for Brett Greenberger is 1073591558, a Type 1 (individual) record in the CMS NPPES registry.

Where does Brett Greenberger practice?

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

Other providers at this practice address

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Collaborative Counseling Tms Child & Adolescent Psychiatry Physician · Columbia, MD NPI 1942777305

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