Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Michael Dennis Johnson, MD

Surgery Physician in Springfield, PA · enumerated 2007.

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

National Provider Identifier

1144365974

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Registry record

Entity type Individual (Type 1)

Name Dr. Michael Dennis Johnson

Credential MD

Sex Male

Practice address 417 Baltimore Pike, Springfield, PA, 19064

Phone (484) 470-2600

Fax (484) 470-2601

Enumeration date Feb 20, 2007

Last updated in NPPES Oct 14, 2020

Taxonomy & licenses

208600000X Surgery Physician Allopathic & Osteopathic Physicians · License 25MA10690900 (NJ) Secondary

208600000X Surgery Physician Allopathic & Osteopathic Physicians · License MD039108L (PA) Secondary

208600000X Surgery Physician Allopathic & Osteopathic Physicians · License D0089895 (MD) 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 Michael Johnson?

Michael Johnson is registered in NPPES with the primary taxonomy of Surgery 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 2020-10-14.