Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Robert Arnold Demarco, D.C.

Chiropractor in Rancho Santa Fe, CA · enumerated 2006.

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

National Provider Identifier

1700996139

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Registry record

Entity type Individual (Type 1)

Name Dr. Robert Arnold Demarco

Credential D.C.

Sex Male

Practice address 18025 Calle Ambiente Ste 204, Rancho Santa Fe, CA, 92067

Phone (858) 367-8660

Fax (858) 367-8660

Enumeration date Aug 30, 2006

Last updated in NPPES Mar 11, 2020

Taxonomy & licenses

111N00000X Chiropractor Chiropractic Providers · License DC 22643 (CA) 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

Is NPI 1700996139 active?

Yes, as of the latest NPPES snapshot, NPI 1700996139 is active (record last updated 2020-03-11).

How do I verify Robert Demarco's NPI record?

Cross-check NPI 1700996139 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-03-11.