Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Peter T Katsiyiannis, MD, Inc.

Q: What type of organization is Peter T Katsiyiannis, MD, Inc.?

Peter T Katsiyiannis, MD, Inc. is registered in NPPES as a Interventional Cardiology Physician (its primary provider taxonomy).

Interventional Cardiology Physician in Huntington Park, CA · enumerated 2008 · authorized official Peter Katsiyiannis, President.

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

National Provider Identifier

1235309907

Verified

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Registry record

Entity type Organization (Type 2)

Legal business name Peter T Katsiyiannis, MD, Inc.

Other name <Unavail>

Practice address 2623 E Slauson Ave, Huntington Park, CA, 90255

Phone (323) 583-1931

Enumeration date Mar 10, 2008

Last updated in NPPES Nov 19, 2009

Taxonomy & classification

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License G88008 (CA) Secondary

207RC0000X Cardiovascular Disease Physician Allopathic & Osteopathic Physicians · License G88008 (CA) Secondary

207RI0011X Interventional Cardiology Physician Allopathic & Osteopathic Physicians · License G88008 (CA) Primary

Authorized official

Name Peter Katsiyiannis

Title President

Phone (951) 699-0303

Other identifiers

Identifier	Type	State	Issuer
00G880080	Other	CA	MEDI-CAL

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 type of organization is Peter T Katsiyiannis, MD, Inc.?

Peter T Katsiyiannis, MD, Inc. is registered in NPPES as a Interventional Cardiology Physician (its primary provider taxonomy).

What is a Type 2 NPI?

A Type 2 NPI identifies an organization (group practice, hospital, pharmacy, lab), while Type 1 NPIs identify individual providers. Organizations bill under their Type 2 NPI.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-11-19.