Quick answers
- Does Lisa H. Abbou accept Medicare assignment?
- Yes. Medicare's clinician data says Lisa H. Abbou 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 Lisa H. Abbou see?
- In 2024, CMS data shows 22 Original Medicare patients and 89 services for Lisa H. Abbou. This counts Original Medicare only and measures volume, not quality.
- What is Lisa H. Abbou's NPI number?
- 1700456407. 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 Lisa H. Abbou, 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 | 22 |
|---|---|
| Services billed to Medicare | 89 |
| Different services or procedures | 5 |
| Participating Medicare provider | Yes |
| Average age of these patients | 67 |
Most frequent services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)63 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 cholesterol75%
- Diabetes68%
- Ischemic heart disease68%
- Heart failure64%
- Arthritis59%
Hospitals where Lisa H. Abbou works
Medicare's Facility Affiliation Data lists Lisa H. Abbou 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.
- California Hospital Medical Center LALos Angeles, CA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 050149
Practice locations
Addresses where Lisa H. Abbou is enrolled with Medicare (CMS data updated October 2, 2026).
- 1701 Santa Anita AveS El Monte, CA 91733 (626) 579‑7777
Group practices
Medicare enrollment lists Lisa H. Abbou as a member of this group (CMS data updated October 2, 2026).
- Hospitalist Group of Montebello Inc58 clinicians in the group
Specialties
- Hospitalistprimary
Other hospitalists in California
Clinicians with the same Medicare primary specialty in California — not a recommendation.
Other clinicians in Hospitalist Group of Montebello Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2021 (5 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1700456407 |
| 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