Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Michael Kevin O'Brien, M.D.

Surgery Physician in New Haven, CT · enumerated 2006.

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

National Provider Identifier

1730107061

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Registry record

Entity type Individual (Type 1)

Name Michael Kevin O'Brien

Credential M.D.

Sex Male

Practice address 60 Temple St, Suite 5a, New Haven, CT, 06510

Phone (203) 772-0650

Fax (203) 785-9097

Enumeration date Jul 17, 2006

Last updated in NPPES Jan 8, 2013

Taxonomy & licenses

208600000X Surgery Physician Allopathic & Osteopathic Physicians · License 035075 (CT) 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
001405150	Medicaid	CT	-

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

Is NPI 1730107061 active?

Yes, as of the latest NPPES snapshot, NPI 1730107061 is active (record last updated 2013-01-08).

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

Cross-check NPI 1730107061 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-01-08.