Quick answers
- Which hospitals does Alaa Hajal work at?
- Medicare's official clinician data lists Alaa Hajal at 1 hospital: Martin Luther King, Jr. Community Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Alaa Hajal see patients?
- Medicare's clinician data lists 2 practice locations, including Diamond Bar, CA and Los Angeles, CA. Call before your visit to confirm the address.
- What is Alaa Hajal's specialty?
- Medicare lists Internal Medicine as the primary specialty.
- Does Alaa Hajal accept Medicare assignment?
- Yes. Medicare's clinician data says Alaa Hajal accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for Alaa Hajal?
- (909) 551-0205, as listed in official Medicare / NPI Registry data.
- What is Alaa Hajal's NPI number?
- 1669829032. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Alaa Hajal works
Medicare's Facility Affiliation Data lists Alaa Hajal at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Martin Luther King, Jr. Community HospitalLos Angeles, CA · Acute Care Hospital · CCN 050779
Practice locations
Addresses where Alaa Hajal is enrolled with Medicare (CMS data updated 2026-10-02).
- 1111 Grand Ave, Suite LDiamond Bar, CA 91765 (909) 551‑0205
- 1680 E 120th StLos Angeles, CA 90059 (424) 338‑8000
Group practices
Medicare enrollment lists Alaa Hajal as a member of these groups (CMS data updated 2026-10-02).
- Superior Hospitalist Medical Group Inc75 clinicians in the group
- Alaa Hajal MD2 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Diamond Bar
Clinicians with the same Medicare primary specialty in Diamond Bar, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2011 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1669829032 |
| 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 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- 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