Quick answers
- Does William K. Christian accept Medicare assignment?
- Yes. Medicare's clinician data says William K. Christian accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does William K. Christian see?
- In 2024, CMS data shows 612 Original Medicare patients and 2,944 services for William K. Christian. This counts Original Medicare only and measures volume, not quality.
- What is William K. Christian's NPI number?
- 1285825158. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for William K. Christian, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 612 |
|---|---|
| Services billed to Medicare | 2,944 |
| Different services or procedures | 26 |
| Participating Medicare provider | Yes |
| Average age of these patients | 78 |
Most frequent services
- Closure of tear duct opening using plug (68761)734 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)417 services
- Established patient complete exam of visual system (92014)410 services
- Imaging of retina (92134)307 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)272 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High cholesterol75%
- High blood pressure65%
- Arthritis47%
- Ischemic heart disease32%
- Osteoporosis22%
- Diabetes21%
Practice locations
Addresses where William K. Christian is enrolled with Medicare (CMS data updated October 2, 2026).
- 2001 Santa Monica Blvd, Suite 985wSanta Monica, CA 90404 (310) 828‑5888
- 700 W 7th St, Suite G260Los Angeles, CA 90017 (310) 828‑5888
Specialties
- Ophthalmologyprimary
Other ophthalmologists in Santa Monica
Clinicians with the same Medicare primary specialty in Santa Monica, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Washington School Of Medicine |
| Graduation year | 2002 (24 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1285825158 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians