Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. David J Halvorson, M.D.

Specialist in Alabaster, AL · enumerated 2006.

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

National Provider Identifier

1790880698

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Registry record

Entity type Individual (Type 1)

Name Dr. David J Halvorson

Credential M.D.

Sex Male

Practice address Alabaster, AL, 35007

Phone (205) 621-8900

Fax (205) 621-7169

Enumeration date Sep 14, 2006

Last updated in NPPES Aug 22, 2013

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

174400000X Specialist Other Service Providers · License 20146 (AL) Primary

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
2512856002	Other	AL	CIGNA
51025753	Other	AL	BCBS OF AL
631215960	Other	AL	VIVA
51530334	Other	AL	BCBS OF AL
F51696	Other	AL	HEALTHSPRINGS OF ALABAMA
1010027	Other	AL	UNITED HEALTHCARE
529902750	Medicaid	AL	-
51008484	Other	AL	BCBS OF AL

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 David Halvorson?

David Halvorson is registered in NPPES with the primary taxonomy of Specialist. 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.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-08-22.