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Dr. Theodore Zwerdling, MD

Pediatrics Physician in Paradise, CA · enumerated 2005.

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

National Provider Identifier

1861475865

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Registry record

Entity type Individual (Type 1)
Name Dr. Theodore Zwerdling
Credential MD
Sex Male
Practice address 5125 Skyway, Paradise, CA, 95969
Phone (530) 872-2000
Fax (530) 332-1049
Enumeration date Nov 22, 2005
Last updated in NPPES Jul 23, 2019

Taxonomy & licenses

2080P0207X Pediatric Hematology & Oncology Physician Allopathic & Osteopathic Physicians · License G52223 (CA) Secondary
208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License G52223 (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.

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Frequently asked questions

Is NPI 1861475865 active?
Yes, as of the latest NPPES snapshot, NPI 1861475865 is active (record last updated 2019-07-23).
How do I verify Theodore Zwerdling's NPI record?
Cross-check NPI 1861475865 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-07-23.