NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dana Casey Chan, MD

Ophthalmology Physician in Oceanside, CA · enumerated 2010 · practices at Gm Sally Mellgren, M.D. Inc..

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

National Provider Identifier

1972820033

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Dana Casey Chan
Credential MD
Sex Female
Practice address 3621 Vista Way, Oceanside, CA, 92056
Phone (760) 757-1144
Fax (760) 859-4522
Enumeration date Apr 29, 2010
Last updated in NPPES Jan 28, 2016

Taxonomy & licenses

207W00000X Ophthalmology Physician Allopathic & Osteopathic Physicians · License A134223 (CA) Primary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD 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

Where does Dana Chan practice?
The practice location on file with NPPES is in Oceanside, CA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Dana Chan?
The National Provider Identifier (NPI) for Dana Chan is 1972820033, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-01-28.