Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. William Rudolph Collini, MD

Urology Physician in Newton, NJ · enumerated 2005.

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

National Provider Identifier

1922008036

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Registry record

Entity type Individual (Type 1)

Name Dr. William Rudolph Collini

Credential MD

Sex Male

Practice address 181 High St, Newton, NJ, 07860

Phone (973) 383-9898

Fax (973) 383-9665

Enumeration date Jul 29, 2005

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

208800000X Urology Physician Allopathic & Osteopathic Physicians · License 25MA02546700 (NJ) 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

What is the NPI number for William Collini?

The National Provider Identifier (NPI) for William Collini is 1922008036, a Type 1 (individual) record in the CMS NPPES registry.

Where does William Collini practice?

The practice location on file with NPPES is in Newton, NJ. 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 2007-07-08.