Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Jeffrey S. Johnston, M.D.

Forensic Pathology Physician in Phoenix, AZ · enumerated 2007 · practices at Maricopa County Forensic Science Center.

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

National Provider Identifier

1578618302

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Registry record

Entity type Individual (Type 1)

Name Dr. Jeffrey S. Johnston

Credential M.D.

Sex Male

Practice address 701 W Jefferson St, Phoenix, AZ, 85007

Phone (602) 506-3322

Enumeration date Jan 24, 2007

Last updated in NPPES Sep 7, 2021

Taxonomy & licenses

207ZF0201X Forensic Pathology Physician Allopathic & Osteopathic Physicians · License 37781 (AZ) 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.

Read the full guide → Validate an NPI →

Frequently asked questions

What specialty is Jeffrey Johnston?

Jeffrey Johnston is registered in NPPES with the primary taxonomy of Forensic Pathology Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-09-07.