Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Andrew Hornstein, M.D.

Psychiatry Physician in Pomona, NY · enumerated 2006.

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

National Provider Identifier

1528027117

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Registry record

Entity type Individual (Type 1)

Name Dr. Andrew Hornstein

Credential M.D.

Sex Male

Practice address 972 Route 45, Ste 203, Pomona, NY, 10970

Phone (845) 354-6050

Fax (845) 638-2471

Enumeration date Mar 21, 2006

Last updated in NPPES Aug 31, 2017

Taxonomy & licenses

2084P0800X Psychiatry Physician Allopathic & Osteopathic Physicians · License 118783 (NY) 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

Where does Andrew Hornstein practice?

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

What is the NPI number for Andrew Hornstein?

The National Provider Identifier (NPI) for Andrew Hornstein is 1528027117, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2017-08-31.