Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Christina O'Brien, MD

Internal Medicine Physician in Mount Kisco, NY · enumerated 2017.

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

National Provider Identifier

1174052112

Verified

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Registry record

Entity type Individual (Type 1)

Name Christina O'Brien

Credential MD

Sex Female

Practice address 400 E Main St, Mount Kisco, NY, 10549

Phone (302) 383-9764

Enumeration date Jun 5, 2017

Last updated in NPPES Nov 14, 2023

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 317296 (NY) Secondary

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License MD2023-1322 (NM) Secondary

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 281695 (MA) 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

How do I verify Christina O'Brien's NPI record?

Cross-check NPI 1174052112 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1174052112 active?

Yes, as of the latest NPPES snapshot, NPI 1174052112 is active (record last updated 2023-11-14).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-11-14.