Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Michael Gwynne Johnston, M.D.

Surgery Physician in Portsmouth, VA · enumerated 2005.

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

National Provider Identifier

1275515652

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Registry record

Entity type Individual (Type 1)

Name Dr. Michael Gwynne Johnston

Credential M.D.

Sex Male

Practice address 620 John Paul Jones Cir, Nmcp - Dept of General Surgery, Portsmouth, VA, 23708

Phone (757) 953-2516

Fax (757) 953-0845

Enumeration date Nov 19, 2005

Last updated in NPPES Jun 27, 2024

Taxonomy & licenses

208600000X Surgery Physician Allopathic & Osteopathic Physicians · License 0101236832 (VA) 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

How do I verify Michael Johnston's NPI record?

Cross-check NPI 1275515652 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1275515652 active?

Yes, as of the latest NPPES snapshot, NPI 1275515652 is active (record last updated 2024-06-27).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-06-27.