Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ms. Ashling O'Connor, MD

Surgery Physician in Burlington, MA · enumerated 2008.

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

National Provider Identifier

1881851798

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Registry record

Entity type Individual (Type 1)

Name Ms. Ashling O'Connor

Credential MD

Sex Female

Practice address Lahey Hospital and Medical Center, 41 Mall Road, Burlington, MA, 01805

Phone (781) 744-8580

Fax (781) 744-5253

Enumeration date May 19, 2008

Last updated in NPPES Sep 13, 2018

Taxonomy & licenses

2086X0206X Surgical Oncology Physician Allopathic & Osteopathic Physicians · License 247048 (MA) Secondary

208600000X Surgery Physician Allopathic & Osteopathic Physicians · License 247048 (MA) 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
110089130A	Medicaid	MA	-

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 Ashling O'Connor?

The National Provider Identifier (NPI) for Ashling O'Connor is 1881851798, a Type 1 (individual) record in the CMS NPPES registry.

Where does Ashling O'Connor practice?

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

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-09-13.