Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Diana Aldona Roth O'Brien, MD, MPH, BA

Radiation Oncology Physician in Montvale, NJ · enumerated 2015.

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

National Provider Identifier

1043606957

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Registry record

Entity type Individual (Type 1)

Name Diana Aldona Roth O'Brien

Credential MD, MPH, BA

Sex Female

Practice address 225 Summit Ave, Montvale, NJ, 07645

Phone (201) 775-7000

Enumeration date Apr 8, 2015

Last updated in NPPES Aug 3, 2020

Taxonomy & licenses

2085R0001X Radiation Oncology Physician Allopathic & Osteopathic Physicians · License 304526 (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 Diana Roth O'Brien practice?

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

What is the NPI number for Diana Roth O'Brien?

The National Provider Identifier (NPI) for Diana Roth O'Brien is 1043606957, 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 2020-08-03.