Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Michael J O'Brien, MD

Vascular & Interventional Radiology Physician in Lakewood, CO · enumerated 2006.

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

National Provider Identifier

1720168172

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Michael J O'Brien

Credential MD

Sex Male

Practice address 11600 W 2nd Pl, Lakewood, CO, 80228

Phone (720) 321-0000

Fax (720) 321-1621

Enumeration date Oct 17, 2006

Last updated in NPPES Jun 12, 2019

Taxonomy & licenses

2085R0202X Diagnostic Radiology Physician Allopathic & Osteopathic Physicians · License DR.0046816 (CO) Secondary

2085R0204X Vascular & Interventional Radiology Physician Allopathic & Osteopathic Physicians · License DR.0046816 (CO) 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
48635227	Medicaid	CO	-
761892	Medicaid	AZ	-

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 Michael O'Brien's NPI record?

Cross-check NPI 1720168172 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1720168172 active?

Yes, as of the latest NPPES snapshot, NPI 1720168172 is active (record last updated 2019-06-12).

Other providers at this practice address

Browse all →

Brigitte Beaudry Anesthesiology Physician · Lakewood, CO NPI 1518960897 David Lennon Anesthesiology Physician · Lakewood, CO NPI 1619962735 David Okeefe Emergency Medicine Physician · Lakewood, CO NPI 1376538017 Kathleen Jenkins Anesthesiology Physician · Lakewood, CO NPI 1215919410 Shirley Kung Emergency Medicine Physician · Lakewood, CO NPI 1942286349 Shelley Clyne Hospitalist Physician · Lakewood, CO NPI 1093794984 Joseph Turner Internal Medicine Physician · Lakewood, CO NPI 1073593216 Don Molden Internal Medicine Physician · Lakewood, CO NPI 1417929795

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-06-12.