Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Ronald Mark Michalski, DC

Chiropractor in Santa Ana, CA · enumerated 2007.

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

National Provider Identifier

1891817839

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Registry record

Entity type Individual (Type 1)

Name Dr. Ronald Mark Michalski

Credential DC

Sex Male

Practice address 3500 S Bristol St, Ste 205, Santa Ana, CA, 92704

Phone (714) 444-4044

Fax (714) 444-4070

Enumeration date Apr 3, 2007

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

111N00000X Chiropractor Chiropractic Providers · License 19912 (CA) Primary

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

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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

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.

What specialty is Ronald Michalski?

Ronald Michalski 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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.