Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. Duncan Johnston

Emergency Medical Services (Emergency Medicine) Physician in Sacramento, CA · enumerated 2011.

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

National Provider Identifier

1669770574

Verified

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Registry record

Entity type Individual (Type 1)

Name Mr. Duncan Johnston

Sex Male

Practice address 4610 X St, Sacramento, CA, 95817

Phone (530) 848-8552

Enumeration date Mar 2, 2011

Last updated in NPPES Nov 8, 2023

Taxonomy & licenses

390200000X Student in an Organized Health Care Education/Training Program Student, Health Care Secondary

207PE0004X Emergency Medical Services (Emergency Medicine) Physician Allopathic & Osteopathic Physicians · License A140788 (CA) Primary

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 Duncan Johnston's NPI record?

Cross-check NPI 1669770574 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1669770574 active?

Yes, as of the latest NPPES snapshot, NPI 1669770574 is active (record last updated 2023-11-08).

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Uc Davis School of Medicine Student in an Organized Health Care Education/Training Program · Sacramento, CA NPI 1417275587 Jennifer Morley Emergency Medicine Physician · Sacramento, CA NPI 1629381736 Alyn Kelley Student in an Organized Health Care Education/Training Program · Sacramento, CA NPI 1962716035 Kara Toles Emergency Medicine Physician · Sacramento, CA NPI 1154624187 Arica Lemler Emergency Medicine Physician · Sacramento, CA NPI 1366747644 Melissa Mariano Student in an Organized Health Care Education/Training Program · Sacramento, CA NPI 1134425655 Kimberlee Jackson Family Medicine Physician · Sacramento, CA NPI 1396042628 Jana Chtchetinin Student in an Organized Health Care Education/Training Program · Sacramento, CA NPI 1164711131

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-11-08.