Quick answers
- Does Christianne Wa accept Medicare assignment?
- Yes. Medicare's clinician data says Christianne Wa 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 Christianne Wa see?
- In 2024, CMS data shows 966 Original Medicare patients and 23,898 services for Christianne Wa. This counts Original Medicare only and measures volume, not quality.
- What is Christianne Wa's NPI number?
- 1073908976. 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 Christianne Wa, 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 | 966 |
|---|---|
| Services billed to Medicare | 23,898 |
| Different services or procedures | 46 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Injection, faricimab-svoa, 0.1 mg (J2777)17,280 services
- Imaging of retina (92134)1,891 services
- Injection, aflibercept, 1 mg (J0178)940 services
- Injection of drug into eye (67028)757 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)533 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 blood pressure75%
- High cholesterol73%
- Diabetes49%
- Arthritis35%
- Chronic kidney disease31%
- Ischemic heart disease23%
Hospitals where Christianne Wa works
Medicare's Facility Affiliation Data lists Christianne Wa at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Alta Bates Summit Medical Center - Alta Bates CampBerkeley, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050305
Practice locations
Addresses where Christianne Wa is enrolled with Medicare (CMS data updated October 2, 2026).
- 1460 N Camino Alto, Suite 206Vallejo, CA 94589 (707) 552‑9596
- 4049 Lone Tree Way, Suite IjAntioch, CA 94531 (800) 573‑8462
Group practices
Medicare enrollment lists Christianne Wa as a member of this group (CMS data updated October 2, 2026).
- Bay Area Retina Associates8 clinicians in the group
Specialties
- Ophthalmologyprimary
Other ophthalmologists in Vallejo
Clinicians with the same Medicare primary specialty in Vallejo, CA — not a recommendation.
Other clinicians in Bay Area Retina Associates
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2015 (11 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1073908976 |
| 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
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- 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