Quick answers
- Does Abraham W. Leung accept Medicare assignment?
- Yes. Medicare's clinician data says Abraham W. Leung 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 Abraham W. Leung see?
- In 2024, CMS data shows 90 Original Medicare patients and 183 services for Abraham W. Leung. This counts Original Medicare only and measures volume, not quality.
- What is Abraham W. Leung's NPI number?
- 1427541085. 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 Abraham W. Leung, 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 | 90 |
|---|---|
| Services billed to Medicare | 183 |
| Different services or procedures | 33 |
| Participating Medicare provider | Yes |
| Average age of these patients | 68 |
Most frequent services
- New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)48 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)33 services
- Automated urinalysis test (81003)12 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 pressure69%
- High cholesterol66%
- Arthritis50%
- Diabetes39%
- Anxiety32%
- Chronic kidney disease26%
Practice locations
Addresses where Abraham W. Leung is enrolled with Medicare (CMS data updated October 2, 2026).
- 2100 S Euclid St, Suite 102Anaheim, CA 92802 (714) 644‑9100
- 235 E 17th StCosta Mesa, CA 92627 (949) 688‑2010
- 26777 Agoura Rd, Suite B4Calabasas, CA 91302 (818) 880‑2225
- 8135 N Painter Ave, Suite 104Whittier, CA 90602 (562) 758‑2345
- 831 S State College BlvdAnaheim, CA 92806 (714) 533‑2273
Group practices
Medicare enrollment lists Abraham W. Leung as a member of this group (CMS data updated October 2, 2026).
- Exer Medical Corporation340 clinicians in the group
Specialties
- Physician Assistantprimary
Other physician assistants in Anaheim
Clinicians with the same Medicare primary specialty in Anaheim, CA — not a recommendation.
Other clinicians in Exer Medical Corporation
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | PA |
|---|---|
| Graduation year | 2017 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1427541085 |
| 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