Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Steven Bailey Allen, MD

Nuclear Medicine Physician in Springfield, MA · enumerated 2006.

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

National Provider Identifier

1831162452

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Registry record

Entity type Individual (Type 1)

Name Dr. Steven Bailey Allen

Credential MD

Sex Male

Practice address 271 Carew St, Springfield, MA, 01104

Phone (413) 748-9000

Enumeration date Feb 13, 2006

Last updated in NPPES Sep 11, 2025

Taxonomy & licenses

207U00000X Nuclear Medicine Physician Allopathic & Osteopathic Physicians · License 150054 (MA) Primary

2085R0202X Diagnostic Radiology Physician Allopathic & Osteopathic Physicians · License 150054 (MA) Secondary

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 Steven Allen?

Steven Allen is registered in NPPES with the primary taxonomy of Nuclear Medicine 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 2025-09-11.