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

Dr. Andrew Simon Choi, D.C.

Chiropractor in Gaithersburg, MD · enumerated 2006.

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

National Provider Identifier

1770663544

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Registry record

Entity type Individual (Type 1)

Name Dr. Andrew Simon Choi

Credential D.C.

Sex Male

Practice address Gaithersburg, MD, 20879

Phone (301) 740-8500

Fax (301) 740-8505

Enumeration date Oct 16, 2006

Last updated in NPPES Dec 12, 2008

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

Taxonomy & licenses

111N00000X Chiropractor Chiropractic Providers · License X009719 (NY) Primary

111NR0400X Rehabilitation Chiropractor Chiropractic Providers · License 03473 (MD) Secondary

111NR0400X Rehabilitation Chiropractor Chiropractic Providers · License 0104556400 (VA) Secondary

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

How do I verify Andrew Choi's NPI record?

Cross-check NPI 1770663544 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1770663544 active?

Yes, as of the latest NPPES snapshot, NPI 1770663544 is active (record last updated 2008-12-12).

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-12-12.