Alexander Ong Sy, MD, MBA, MSL
Critical Care Medicine (Internal Medicine) Physician · Loma Linda, CA
Alexander Ong Sy, MD, MBA, MSL is a critical care medicine (internal medicine) physician with a practice address in Loma Linda, California, and NPI 1144297748, issued on Mar 2, 2006. Check the license (California 177284, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Alexander Ong Sy
- Credential
- MD, MBA, MSL
- Primary taxonomy
- Critical Care Medicine (Internal Medicine) Physician 207RC0200X
- License number
- 177284 CA
Self-reported in NPPES; status is on the state search - Practice location
- 11201 Benton St, Loma Linda, CA 92357
- Phone
- (909) 825-7084
- Enumerated
- Mar 2, 2006
- Record last updated
- Mar 6, 2025
- Medicaid ID
- 266223 SC
- Entity
- Type 1 · individual
8 nearest critical care medicine (internal medicine) physician records → All 723 in California → Look up another NPI →
Also registered at 11201 Benton St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Arlene AbarcaCritical Care Medicine Registered Nurse1437073467
- Antonio Abiog, M.D.Surgery Physician1952492522
- Hesham AbugufaDentist1538875794
- Matthew Adams, DPTPhysical Therapist1184786071
- Susann Adams, LCSWClinical Social Worker1295849362
- Raychelle Addo, LCSWClinical Social Worker1033307251
Verify Alexander Ong Sy in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 177284Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Industry payments in 2024: $14.47
1 payment: food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 2,708 providers of this specialty with any payment received $2,958.68 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Alexander Ong Sy among 723 critical care medicine (internal medicine) physician records in California
Alexander Ong Sy, MD, MBA, MSL is one of 723 critical care medicine (internal medicine) physician records with a practice address in California. 87% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 6% of them.
- NPI issued2006 · 6% of these records are older, 60% newer
- In a Medicare fileYes · 87% of these records are
- In the CMS Doctors and Clinicians fileNo · 77% of these records are
- Record last updated2025 · 50% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RC0200X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Critical Care Medicine (Internal Medicine) Physician providers in California
There are 723 critical care medicine (internal medicine) physician records in California.
All 723 in California → Every provider in Loma Linda → Critical Care Medicine (Internal Medicine) Physician nationwide →
The 8 critical care medicine (internal medicine) physician records with the nearest ZIP codes
- Ruoying Feng, MDLoma Linda, CA 923571457848996
- Prajan SubediLoma Linda, CA 923571124250022
- Unknown Abdul Hameed Zaid, M.B,B.SLoma Linda, CA 923541679908800
- Moosa Azadian, M.D.Loma Linda, CA 923541013443746
- Khazenay Bakhsh, DOLoma Linda, CA 923541184940033
- David Bland, M.D.Loma Linda, CA 923541649290750
- Gregory Cheek, M.D.Loma Linda, CA 923541982624003
- Naureen Farook, MDLoma Linda, CA 923541255861852
Common questions
What is Alexander Ong Sy, MD, MBA, MSL's NPI number?
Alexander Ong Sy, MD, MBA, MSL's National Provider Identifier (NPI) is 1144297748, issued on Mar 2, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Alexander Ong Sy, MD, MBA, MSL located?
The NPPES record lists a practice address at 11201 Benton St, Loma Linda, CA, 92357. Phone: (909) 825-7084. Providers update this record themselves, so call before visiting.
How can I verify Alexander Ong Sy, MD, MBA, MSL's license?
NPPES lists California license number 177284, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.