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

Mr. Ronald Wayne Rosenquist, MD

Urology Physician in Laguna Hills, CA · enumerated 2005.

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

National Provider Identifier

1770580649

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Registry record

Entity type Individual (Type 1)

Name Mr. Ronald Wayne Rosenquist

Credential MD

Sex Male

Practice address Laguna Hills, CA, 92653

Phone (949) 768-6711

Fax (949) 768-6711

Enumeration date Jul 7, 2005

Last updated in NPPES Jan 22, 2010

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

Taxonomy & licenses

208800000X Urology Physician Allopathic & Osteopathic Physicians · License G34099 (CA) 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
00G340990	Other	CA	BCBS

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 1770580649 active?

Yes, as of the latest NPPES snapshot, NPI 1770580649 is active (record last updated 2010-01-22).

How do I verify Ronald Rosenquist's NPI record?

Cross-check NPI 1770580649 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 2010-01-22.