Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Daniel James Ramos Oller, D.C.

Chiropractor in Oak Park, IL · enumerated 2011.

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

National Provider Identifier

1790066884

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Dr. Daniel James Ramos Oller

Credential D.C.

Sex Male

Practice address 101 Madison St, Suite 200, Oak Park, IL, 60302

Phone (708) 660-9070

Fax (708) 660-9565

Enumeration date Sep 1, 2011

Last updated in NPPES Sep 21, 2012

Taxonomy & licenses

111N00000X Chiropractor Chiropractic Providers · License 038011997 (IL) Primary

DC · Doctor of Chiropractic: A licensed chiropractor focusing on musculoskeletal and nervous system disorders. About the DC 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 Daniel Oller?

Daniel Oller 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.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-09-21.