Gabriella Aitcheson, MD

Procedures

From CMS Care Compare, which counts the procedures a clinician billed to Original Medicare and Medicare Advantage over a recent 12-month period. CMS reports a fixed list of common procedures, so this is not everything the clinician does. Counts of 10 or fewer are given as a range, because CMS withholds small numbers.

The percentile compares how often this clinician performed the procedure with other clinicians who performed it, as CMS calculates it. It measures volume, not outcomes or skill.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

• Loma Linda University Medical Center Hospital · Loma Linda, CA
• Riverside University Health System-Medical Center Hospital · Moreno Valley, CA · listed as Riverside University Health Systems - Medical Center

Colleagues at Faculty Physicians and Surgeons of Llusm

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 1308 clinicians in the practice; 12 are shown here.

• Jacqueline Algara, MD Emergency Medicine Physician · Loma Linda, CA
• Mrs. Andrea Nicole Ali Physician Assistant · Loma Linda, CA
• Carmel Armon, MD Epilepsy Physician · Loma Linda, CA
• Mallory Cohen, MD Pediatric Gastroenterology Physician · Loma Linda, CA
• Safwan Gaznabi, MD Cardiovascular Disease Physician · Loma Linda, CA
• Tamara Lynne Hobson, NP Family Nurse Practitioner · Loma Linda, CA
• Dr. Alexander W. Jahng, MD Internal Medicine Physician · Orange, CA
• Dr. Kasra Maasumi, MD Neurology Physician · Rancho Santa Margarita, CA
• Hora Nemati Rezvani, MD Student in an Organized Health Care Education/Training Program · Hattiesburg, MS
• Delia R Shanahan, NP Nurse Practitioner · Redlands, CA
• Anaia Whitehead, NP Acute Care Nurse Practitioner · Fontana, CA
• Mark Wittman, MD Emergency Medicine Physician · Beverly Hills, CA

Other providers in San Bernardino

• Dr. John Robert Evans, MD

  Individual Gastroenterology Physician · NPI 1245253582

  355 E 21st St Ste, San Bernardino, CA 92404 · (909) 886-2609

• J Robert Evans MD PC

  Organization Gastroenterology Physician · NPI 1568928588

  355 E 21st St Ste H, San Bernardino, CA 92404-4851 · (909) 886-2609

• Dr. Won-Seok Jo, MD

  Individual Gastroenterology Physician · NPI 1245215144

  424 E Vanderbilt Way Ste B, San Bernardino, CA 92408-3552 · (909) 796-0363

• John R Evans MD

  Organization Gastroenterology Physician · NPI 1043478779

  399 E Highland Ave Ste 110, San Bernardino, CA 92404-3808 · (909) 886-2609