James Phung, OD.
NPI 1225181951 · Optometrist · San Marcos, CA
James Phung, OD. is a Optometrist provider in San Marcos, CA (NPI 1225181951).
Provider details
- NPI number
- 1225181951
- Entity type
- Individual
- Primary specialty
- OptometristEye and Vision Services Providers
- Credential
- OD.
- Sex
- Male
- Sole proprietor
- No
- License
- 12721 (CA)
Specialties & taxonomies
Eye and Vision Services Providers
Eye and Vision Services Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
19 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
2 documented practice locations
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$20 across 1 record (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (1)
- 3030 Plaza Bonita RdNational City, CA 91950-8009Phone: (619) 267-8500Fax: (619) 267-4983
Registry dates
- Enumerated
- 2007-01-18
- Last updated
- 2019-12-04
Frequently asked questions
- What is James Phung's NPI number?
- James Phung's National Provider Identifier (NPI) is 1225181951, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is James Phung's specialty?
- James Phung is listed in the NPPES registry with a primary specialty of Optometrist (Eye and Vision Services Providers).
- Where is James Phung located?
- James Phung's practice location on file with NPPES is 732 Center Dr., San Marcos, CA 92069.
- What is James Phung's phone number?
- The practice phone number listed in the NPPES registry for James Phung is (760) 839-5161.
- Is James Phung's NPI active?
- Yes — James Phung's NPI (1225181951) is active in the NPPES registry as of the last update on 2019-12-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.