Yan Chen Wongworawat, MD

Medicare activity in 2024

Official CMS public-use data for Yan Chen Wongworawat, 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.

Most frequent services

1. Antibody evaluation, each additional single antibody stain procedure (88350)388 services
2. Special stained specimen slides to examine tissue including interpretation and report (88313)193 services
3. Pathology examination of tissue using a microscope, intermediate complexity (88305)94 services
4. Antibody evaluation, initial single antibody stain procedure (88346)58 services
5. Electron microscopy for diagnosis (88348)48 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%
• Chronic kidney disease75%
• High cholesterol72%
• Diabetes49%
• Arthritis36%
• Heart failure33%

Hospitals where Yan Chen Wongworawat works

Medicare's Facility Affiliation Data lists Yan Chen Wongworawat 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.

• Loma Linda University Medical CenterLoma Linda, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050327

Practice locations

Addresses where Yan Chen Wongworawat is enrolled with Medicare (CMS data updated October 2, 2026).

• 11234 Anderson StLoma Linda, CA 92354
• 901 San Bernardino Rd, Suite 104and302Upland, CA 91786 (909) 558‑4000

Group practices

Medicare enrollment lists Yan Chen Wongworawat as a member of this group (CMS data updated October 2, 2026).

• Faculty Physicians and Surgeons of Llusm1,315 clinicians in the group

Specialties

• Pathologyprimary

Find other Pathology doctors in California →

Other pathologists in Loma Linda

Clinicians with the same Medicare primary specialty in Loma Linda, CA — not a recommendation.

• Ravi Raghavan, MD
• Laura J. Denham, MD
• Jun Wang, MD
• George W. Saukel, MD
• Dylan W. Purkiss, DO
• Chelsea N. Heimbaugh, MD
• Cody S. Carter, MD
• Yan Liu, MD

All pathologists in Loma Linda →

Other clinicians in Faculty Physicians and Surgeons of Llusm

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

• Joshua Barnhill, MD
• Melissa Guthrie, CNA
• Donna M. Lien, MD
• Harry Dao Jr., MD
• Karl Joelson Dela Cruz, PA
• Garima Lal, MD

Clinician information

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

1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
6. Medicare Care Compare — official Medicare tool to look up clinicians