ALAA HAJAL MD
NPI 1023831682
Internal Medicine in Diamond Bar, CA

Q: What is Alaa Hajal MD's NPI number?

The NPI number for Alaa Hajal MD is 1023831682. It was assigned to this organization in the NPPES registry on November 4, 2024. The provider is doing business as La Vista Medical Center.

Q: What is Alaa Hajal MD's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Q: When was this NPI record last updated?

The NPPES record for Alaa Hajal MD was last updated on March 26, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since November 04, 2024

1111 GRAND AVE STE L, DIAMOND BAR, CA 91765(909) 551-0205(909) 345-7084 Get Directions Write a Review

NPPES record last updated: March 26, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Mar 26, 2025, Nov 4, 2024 (2 updates tracked since 2024).

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About Alaa Hajal Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

ALAA HAJAL MD (NPI 1023831682), doing business as La Vista Medical Center, is a healthcare organization registered as an internal medicine in Diamond Bar, California and active in the NPI registry since November 2024. The organization lists Alaa Hajal, Owner, as its authorized official.

NPPES Registry Identity

NPI1023831682

Entity TypeOrganization

Primary Taxonomy207R00000X

Legal Business NameALAA HAJAL MD

Location Address1111 GRAND AVE STE LDiamond Bar, CA 91765-4172

Mailing Address11660 Church St Apt 166Rancho Cucamonga, CA 91730-8927 · (586) 382-5390

Phone(909) 551-0205

Fax(909) 345-7084

Organization SubpartNo

Authorized OfficialAlaa HajalOwner · (586) 382-5390

Enumeration DateNovember 4, 2024

Last NPPES UpdateMarch 26, 20252 updates tracked since enumeration

NPPES CertifiedMarch 26, 2025

✔ NPI 1023831682 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207R00000X

Definition

A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

1111 GRAND AVE STE L, Diamond Bar, CA 91765

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Other Names 1

Doing Business AsLa Vista Medical Center

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Alaa Hajal Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 2 clinicians reassign Medicare billing to Alaa Hajal MD, which bills Medicare for the services they deliver. They are listed nearest first.

Clinicians, nearest first (2)

Huda Khaleel

Internal Medicine

NPI 1386907509

1520 SAN PABLO ST SUITE 1000
Los Angeles, CA 90033

(323) 442-5100

✔ PECOS✔ Accepts Medicare23 mi

Alaa Hajal, M.D

Internal Medicine

NPI 1669829032

2101 N WATERMAN AVE
San Bernardino, CA 92404

(909) 881-4520

✔ PECOS✔ Accepts Medicare32 mi

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Alaa Hajal MD's NPI number?

The NPI number for Alaa Hajal MD is 1023831682. It was assigned to this organization in the NPPES registry on November 4, 2024. The provider is doing business as La Vista Medical Center.

Where is Alaa Hajal MD located?

Alaa Hajal MD is located at 1111 Grand Ave Ste L, Diamond Bar, CA 91765. The listed phone number is (909) 551-0205.

What is Alaa Hajal MD's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Alaa Hajal MD enrolled in Medicare?

Yes. Alaa Hajal MD is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Alaa Hajal MD?

According to the CMS Revalidation Reassignment List (October 2026 release), 2 clinicians, all in Internal Medicine, reassign their Medicare billing to Alaa Hajal MD. A reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for the clinician's services. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for Alaa Hajal MD was last updated on March 26, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.