Monica C. Aszterbaum, MD

Medicare activity in 2024

Official CMS public-use data for Monica C. Aszterbaum, 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. Cervical or vaginal cancer screening; pelvic and clinical breast examination (G0101)92 services
2. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)88 services
3. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)73 services
4. New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)48 services
5. Screening papanicolaou smear; obtaining, preparing and conveyance of cervical or vaginal smear to laboratory (Q0091)32 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 cholesterol75%
• Arthritis55%
• High blood pressure46%
• Osteoporosis35%
• Anxiety28%
• Depression22%

Hospitals where Monica C. Aszterbaum works

Medicare's Facility Affiliation Data lists Monica C. Aszterbaum 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.

• Hoag Memorial Hospital PresbyterianNewport Beach, CA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 050224
• Memorialcare Saddleback Medical CenterLaguna Hills, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050603

Practice locations

Addresses where Monica C. Aszterbaum is enrolled with Medicare (CMS data updated October 2, 2026).

• 510 Superior AveNewport Beach, CA 92663 (949) 764‑5700

Group practices

Medicare enrollment lists Monica C. Aszterbaum as a member of this group (CMS data updated October 2, 2026).

• Hoag Clinic460 clinicians in the group

Specialties

• Obstetrics/Gynecologyprimary

Find other Obstetrics/Gynecology doctors in California →

Other OB-GYNs in Newport Beach

Clinicians with the same Medicare primary specialty in Newport Beach, CA — not a recommendation.

• Courtney B. Martin, DO
• Zhanna M. Pinkus, MD
• Jeffrey S. Illeck, MD
• Lance H. Betson, DO
• Farnaaz Kia, MD
• Christine J. Chai, MD
• Matthew H. Clark, MD
• Charles W. Moniak, MD

All OB-GYNs in Newport Beach →

Other clinicians in Hoag Clinic

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

• Urvi P. Vyas, MD
• Agustin Sibona, MD
• Monica Mita, MD
• Samuel Herman, MD
• Christopher M. Duma, MD
• Patricia Lo, 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