NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. Michael Anthony O'Hanlan, M.D.

Rheumatology Physician in Henderson, NV · enumerated 2006 · practices at Arthritis Associates of Nevada.

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

National Provider Identifier

1700993771

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Dr. Michael Anthony O'Hanlan
Credential M.D.
Sex Male
Practice address Henderson, NV, 89074
Phone (702) 734-8311
Fax (702) 731-2871
Enumeration date Aug 24, 2006
Last updated in NPPES May 31, 2011

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

207RR0500X Rheumatology Physician Allopathic & Osteopathic Physicians · License 3265 (NV) 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 Michael O'Hanlan practice?
The practice location on file with NPPES is in Henderson, NV. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Michael O'Hanlan?
The National Provider Identifier (NPI) for Michael O'Hanlan is 1700993771, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-05-31.