Mason Phan
NPI 1639757032 · Diagnostic Radiology Physician · Loma Linda, CA
Mason Phan is a Diagnostic Radiology Physician provider in Loma Linda, CA (NPI 1639757032).
Provider details
- NPI number
- 1639757032
- Entity type
- Individual
- Primary specialty
- Diagnostic Radiology PhysicianAllopathic & Osteopathic Physicians
- Sex
- Male
- Sole proprietor
- No
- License
- A182123 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
5 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
3 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.
$270 across 5 records (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 (2)
- 101 the City Dr SOrange, CA 92868-3201Phone: (714) 456-8888
- 4445 Magnolia AveRiverside, CA 92501-4135Phone: (951) 788-3274
Registry dates
- Enumerated
- 2021-03-29
- Last updated
- 2026-02-11
- Certified
- 2026-02-11
Frequently asked questions
- What is Mason Phan's NPI number?
- Mason Phan's National Provider Identifier (NPI) is 1639757032, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mason Phan's specialty?
- Mason Phan is listed in the NPPES registry with a primary specialty of Diagnostic Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is Mason Phan located?
- Mason Phan's practice location on file with NPPES is 11234 Anderson Street, Loma Linda, CA 92354.
- What is Mason Phan's phone number?
- The practice phone number listed in the NPPES registry for Mason Phan is (909) 558-4000.
- Is Mason Phan's NPI active?
- Yes — Mason Phan's NPI (1639757032) is active in the NPPES registry as of the last update on 2026-02-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.