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

Patrick Michael Yaffee, M.D.

Internal Medicine Physician in Calabasas, CA · enumerated 2012 · practices at Regents of the University of California.

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

National Provider Identifier

1144587676

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Patrick Michael Yaffee

Credential M.D.

Sex Male

Practice address Calabasas, CA, 91302

Phone (818) 876-1050

Fax (818) 876-1026

Enumeration date Apr 22, 2012

Last updated in NPPES Dec 10, 2019

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

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License A130871 (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

How do I verify Patrick Yaffee's NPI record?

Cross-check NPI 1144587676 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1144587676 active?

Yes, as of the latest NPPES snapshot, NPI 1144587676 is active (record last updated 2019-12-10).

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-12-10.