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Mark Stephen Johnson, MD

Surgery Physician in Portsmouth, VA · enumerated 2006.

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

National Provider Identifier

1235142357

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Registry record

Entity type Individual (Type 1)
Name Mark Stephen Johnson
Credential MD
Sex Male
Practice address 620 John Paul Jones Cir, Portsmouth, VA, 23708
Phone (757) 953-2154
Enumeration date Aug 14, 2006
Last updated in NPPES Sep 24, 2024

Taxonomy & licenses

208600000X Surgery Physician Allopathic & Osteopathic Physicians · License 2015-00091 (NC) Secondary
208600000X Surgery Physician Allopathic & Osteopathic Physicians · License 0101248712 (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

Where does Mark Johnson practice?
The practice location on file with NPPES is in Portsmouth, VA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Mark Johnson?
The National Provider Identifier (NPI) for Mark Johnson is 1235142357, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-09-24.