Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Hendrikje Tromp, MD

Pediatrics Physician in Mt Kisco, NY · enumerated 2007.

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

National Provider Identifier

1689709420

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Registry record

Entity type Individual (Type 1)

Name Dr. Hendrikje Tromp

Credential MD

Sex Female

Practice address 103 South Bedford Road, Suite 201, Mt Kisco, NY, 10549

Phone (914) 242-0808

Fax (914) 242-0166

Enumeration date Feb 22, 2007

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License 178761 (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
178761	Other	NY	LICENSE #

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 Hendrikje Tromp?

The National Provider Identifier (NPI) for Hendrikje Tromp is 1689709420, a Type 1 (individual) record in the CMS NPPES registry.

Where does Hendrikje Tromp practice?

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

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