NPI Portal NPI Lookup & Verification

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

Dr. Louis J Cavallo, DC

Chiropractor in Longmont, CO · enumerated 2006.

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

National Provider Identifier

1841262920

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Registry record

Entity type Individual (Type 1)
Name Dr. Louis J Cavallo
Credential DC
Sex Male
Practice address Longmont, CO, 80501
Phone (303) 678-8555
Fax (303) 678-2931
Enumeration date Feb 3, 2006
Last updated in NPPES Mar 2, 2017

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

Taxonomy & licenses

111N00000X Chiropractor Chiropractic Providers · License 38MC00518000 (NJ) Secondary
111N00000X Chiropractor Chiropractic Providers · License 5821 (CO) Primary
DC · Doctor of Chiropractic: A licensed chiropractor focusing on musculoskeletal and nervous system disorders. About the DC credential

Other identifiers

Identifier Type State Issuer
621921 Other NJ UNTIED HC
C805580 Other CO MEDICAREPTAN
P833467 Other NJ OXFORD
2230355 Other NJ AETNA
1K0384 Other NJ HEALTHNET
2422986000 Other NJ AMERIHEALTH/BLUE CROSS
7858400 Medicaid NJ -
P00236812 Other NJ RAILROAD MEDICARE

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.

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Frequently asked questions

What specialty is Louis Cavallo?
Louis Cavallo is registered in NPPES with the primary taxonomy of Chiropractor. 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 2017-03-02.