Antreas H. Hindoyan, MD

Medicare activity in 2024

Official CMS public-use data for Antreas H. Hindoyan, 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. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)845 services
2. Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)550 services
3. Use of a drug to induce depression of consciousness by physician performing a procedure (5 years or older), initial 15 minutes (99152)214 services
4. Insertion of tube in coronary artery for diagnosis with review by radiologist (93454)167 services
5. New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)137 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%
• High cholesterol75%
• Ischemic heart disease65%
• Arthritis60%
• Diabetes50%
• Chronic kidney disease42%

Hospitals where Antreas H. Hindoyan works

Medicare's Facility Affiliation Data lists Antreas H. Hindoyan 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.

• Adventist Health Howard MemorialWillits, CA · Critical Access Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 051310
• Adventist Health Ukiah ValleyUkiah, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050301
• Keck Hospital of USCLos Angeles, CA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: not listed by Medicare · CCN 050696
• Northridge Hospital Medical CenterNorthridge, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050116

Practice locations

Addresses where Antreas H. Hindoyan is enrolled with Medicare (CMS data updated October 2, 2026).

• 115 Hospital DrUkiah, CA 95482 (707) 463‑2400
• 18406 Roscoe BlvdNorthridge, CA 91325 (818) 477‑2337
• 275 Hospital DrUkiah, CA 95482 (707) 462‑3111

Group practices

Medicare enrollment lists Antreas H. Hindoyan as a member of this group (CMS data updated October 2, 2026).

• Ukiah Adventist Hospital135 clinicians in the group

Specialties

• Interventional Cardiologyprimary
• Cardiovascular Disease (Cardiology)also
• Internal Medicinealso

Find other Interventional Cardiology doctors in California →

Other interventional cardiologists in California

Clinicians with the same Medicare primary specialty in California — not a recommendation.

• Fady A. Ibrahim, MD
• Nowwar G. Mustafa, MD
• Steve S. Lee, MD
• Arthur Calick, MD
• Radhakrishan S. Gandhi, MD
• Murrad J. Abdelkarim, MD
• Kavit A. Desouza, MD
• Ravi Masson, MD

All interventional cardiologists in California →

Other clinicians in Ukiah Adventist Hospital

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

• Ziad Hanna, DO
• David R. Ploss, MD
• Thalia Olson, DO
• Crystal N. Kimball, NP
• Bethany Kelley, CSW
• Stephanie J. Carter, 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