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Cardiologists who accept Medicare in Los Alamitos, CA
CMS lists 15 clinicians in this specialty with a practice address in Los Alamitos. Accept Medicare assignment (the Medicare-approved amount as full payment): 15. Offer telehealth: 7.
Typical amounts Medicare approves in ZIP 90720 (2024 Medicare rates, the latest CMS has published): a new-patient visit $142, of which you pay about $36; a follow-up visit $110, of which you pay about $27 — the 20% coinsurance after the yearly Part B deductible. Clinicians who don't accept assignment can charge up to 15% more; with a Medicare Advantage plan, your plan's copay applies instead.
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Order: clinicians who accept assignment first, then by MIPS score (highest first), then by last name.
Arnold H. Seto, MD
✓ Accepts Medicare assignmentMIPS score (2024): 100/100Graduated 2001 · Harvard Medical SchoolMaleDrug and device company payments (2025): $8,209Bret A. Witter, MD
✓ Accepts Medicare assignmentMIPS score (2024): 95.7/100Graduated 1987 · Baylor College of MedicineMaleDrug and device company payments (2025): $191Robert S. Lee, MD
✓ Accepts Medicare assignmentMIPS score (2024): 95.3/100✓ TelehealthGraduated 2006MaleDrug and device company payments (2025): $885Steven T. Forman, MD
✓ Accepts Medicare assignmentMIPS score (2024): 93.5/100Graduated 1991 · Albany Medical College of Union UniversityMaleDrug and device company payments (2025): $755Ramandeep Brar, MD
✓ Accepts Medicare assignmentMIPS score (2024): 92.8/100Graduated 1995FemaleDrug and device company payments (2025): $883Fernando Mendoza, MD
✓ Accepts Medicare assignmentMIPS score (2024): 81.7/100✓ TelehealthGraduated 2000 · University of California, Geffen School of MedicineMaleDrug and device company payments (2025): $20,473Adrian H. Shandling, MD
✓ Accepts Medicare assignmentMIPS score (2024): 81.7/100✓ TelehealthGraduated 1978 · University College of MedicineMaleDrug and device company payments (2025): $2,763Bruce E. Vannatta, MD
✓ Accepts Medicare assignmentMIPS score (2024): 81.7/100✓ TelehealthGraduated 1980 · Indiana University School of MedicineMaleDrug and device company payments (2025): $800Omid Vahdat, MD
✓ Accepts Medicare assignmentMIPS score (2024): 75/100Graduated 1996 · University of California, Irvine, California College of MedicineMaleDrug and device company payments (2025): $4,622Watson A. Desa, MD
✓ Accepts Medicare assignmentGraduated 1973MaleDrug and device company payments (2025): $25David Filsoof, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 2007 · New York Medical CollegeMaleDrug and device company payments (2025): $53,569Stuart Fischer, MD
✓ Accepts Medicare assignmentGraduated 1979 · JS Weill Medical College, Cornell UniversityMaleDrug and device company payments (2025): $858Mohammad A. Hajjar, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 2000MaleDrug and device company payments (2025): $1,032Najmul I. Siddiqi, MD
✓ Accepts Medicare assignmentGraduated 1998MaleDrug and device company payments (2025): $2,050Amer R. Zarka, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 1979MaleDrug and device company payments (2025): $485
Before you book
This list comes from Medicare's enrollment records, not from reviews. Call the office to confirm the clinician is taking new Medicare patients. With Original Medicare, a clinician who accepts assignment can only charge you the Medicare deductible and coinsurance; one who doesn't may charge up to 15% more than the Medicare-approved amount. If you have a Medicare Advantage plan, check that the clinician is in the plan's network.
The MIPS final score (0–100) comes from Medicare's Merit-based Incentive Payment System for 2024. It combines quality measures, cost, improvement activities and use of certified health records, and it sets a payment adjustment. Clinicians who report as a group share the group's score. It is not a patient rating, and many clinicians have no published score.
Payments from drug and medical device companies come from CMS Open Payments (2025 general payments: meals, travel, consulting and speaking fees, gifts and similar), summed for each clinician. Receiving payments is legal and common and does not mean a clinician did anything wrong.
Other specialists in Los Alamitos
- Primary care doctors49
- Nurse practitioners42
- Dermatologists13
- Orthopedic surgeons10
- Gastroenterologists7
- Ophthalmologists13
- Podiatrists5
- Urologists11
- Pulmonologists6
- Nephrologists11
- Rheumatologists3
- ENT doctors3
- Oncologists18
- Psychologists12
- Therapists and counselors13
- Physical therapists25
- Chiropractors9
- Gynecologists5
- General surgeons6
- Vascular surgeons3
Other care in Los Alamitos
Hospitals · Nursing homes · Dialysis centers · Home health agencies · Hospices
Nearby cities
Enrollment, addresses and scores are as reported to CMS and can change. This is not a list of in-network providers for any Medicare Advantage plan, and it is not medical advice. Source: CMS Provider Data Catalog — Doctors and Clinicians National Downloadable File, Clinician MIPS Performance 2024 and Facility Affiliation Data (released Oct 2, 2026).