Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Morris Wisniewski, M.D.

Internal Medicine Physician in Vista, CA · enumerated 2006.

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

National Provider Identifier

1639112246

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Registry record

Entity type Individual (Type 1)

Name Dr. Morris Wisniewski

Credential M.D.

Sex Male

Practice address 2067 W Vista Way, Suite 200, Vista, CA, 92083

Phone (760) 726-2180

Fax (760) 726-9928

Enumeration date Jun 13, 2006

Last updated in NPPES Apr 1, 2020

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License G48942 (CA) 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 Morris Wisniewski?

The National Provider Identifier (NPI) for Morris Wisniewski is 1639112246, a Type 1 (individual) record in the CMS NPPES registry.

Where does Morris Wisniewski practice?

The practice location on file with NPPES is in Vista, CA. Providers can have multiple locations; NPPES lists the primary practice address.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-04-01.