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Dr. Joanne Ihm Koo, MD

Internal Medicine Physician in Pomona, CA · enumerated 2006.

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

National Provider Identifier

1215983580

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Registry record

Entity type Individual (Type 1)
Name Dr. Joanne Ihm Koo
Credential MD
Sex Female
Practice address 3530 West Pomona Blvd, Pomona, CA, 91769
Phone (909) 595-1221
Fax (909) 598-4352
Enumeration date May 26, 2006
Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License A36581 (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
A365810 Other CA PIN

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.

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Frequently asked questions

How do I verify Joanne Koo's NPI record?
Cross-check NPI 1215983580 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1215983580 active?
Yes, as of the latest NPPES snapshot, NPI 1215983580 is active (record last updated 2007-07-08).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.