Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Allison Michelle Johnsen, M.D.

Diagnostic Radiology Physician in Knoxville, TN · enumerated 2011 · practices at Abercrombie Radiological Consultants Inc.

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

National Provider Identifier

1730475252

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Registry record

Entity type Individual (Type 1)

Name Dr. Allison Michelle Johnsen

Credential M.D.

Sex Female

Practice address 4820 Old Kingston Pike, Knoxville, TN, 37919

Phone (865) 558-9862

Fax (865) 584-3478

Enumeration date Jun 22, 2011

Last updated in NPPES Mar 30, 2026

Taxonomy & licenses

2085R0202X Diagnostic Radiology Physician Allopathic & Osteopathic Physicians · License MD52135 (TN) Primary

2085R0202X Diagnostic Radiology Physician Allopathic & Osteopathic Physicians · License LL33755 (SC) Secondary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
Q022970	Medicaid	TN	-

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 is the NPI number for Allison Johnsen?

The National Provider Identifier (NPI) for Allison Johnsen is 1730475252, a Type 1 (individual) record in the CMS NPPES registry.

Where does Allison Johnsen practice?

The practice location on file with NPPES is in Knoxville, TN. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-03-30.