Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. Robert D Polishook, M.D.

Psychiatry Physician in Merion Station, PA · enumerated 2006.

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

National Provider Identifier

1609937606

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Registry record

Entity type Individual (Type 1)

Name Dr. Robert D Polishook

Credential M.D.

Sex Male

Practice address Merion Station, PA, 19066

Phone (610) 667-5435

Fax (610) 667-1177

Enumeration date Dec 13, 2006

Last updated in NPPES Sep 14, 2023

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

2084P0800X Psychiatry Physician Allopathic & Osteopathic Physicians · License MD-010201-E (PA) 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
114502KKB	Other	PA	PIN
MD010201-E	Other	PA	LICENSE NO.

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 Robert Polishook?

The National Provider Identifier (NPI) for Robert Polishook is 1609937606, a Type 1 (individual) record in the CMS NPPES registry.

Where does Robert Polishook practice?

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

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-09-14.