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Cardiologists who accept Medicare in Fountain Valley, CA
CMS lists 21 clinicians in this specialty with a practice address in Fountain Valley. Accept Medicare assignment (the Medicare-approved amount as full payment): 21. Offer telehealth: 14.
Typical amounts Medicare approves in ZIP 92708 (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.
Lu Chen, MD
✓ Accepts Medicare assignmentMIPS score (2024): 100/100✓ TelehealthGraduated 2016MaleDrug and device company payments (2025): $19,690Christopher J. Berg, MD
✓ Accepts Medicare assignmentMIPS score (2024): 94.6/100✓ TelehealthGraduated 2017 · University of California, Geffen School of MedicineMaleDrug and device company payments (2025): $964Nicolas N. Doan Van, MD
✓ Accepts Medicare assignmentMIPS score (2024): 94.6/100✓ TelehealthGraduated 1982MaleOther offices in Fountain Valley: 1Drug and device company payments (2025): $682Sarah S. Elsayed, MD
✓ Accepts Medicare assignmentMIPS score (2024): 94.6/100✓ TelehealthGraduated 2003FemaleDrug and device company payments (2025): $1,992Hoang P. Nguyen, MD
✓ Accepts Medicare assignmentMIPS score (2024): 94.6/100✓ TelehealthGraduated 2006 · University of California, San Diego School of MedicineMaleDrug and device company payments (2025): $4,400Yu-Ming Ni, MD
✓ Accepts Medicare assignmentMIPS score (2024): 94.6/100✓ TelehealthGraduated 2016 · New York Medical CollegeMaleOther offices in Fountain Valley: 1Drug and device company payments (2025): $1,671Arvind S. Nirula
✓ Accepts Medicare assignmentMIPS score (2024): 94.6/100✓ TelehealthGraduated 1993MaleOther offices in Fountain Valley: 1Drug and device company payments (2025): $2,676Sanjiv M. Patel, MD
✓ Accepts Medicare assignmentMIPS score (2024): 94.6/100✓ TelehealthGraduated 2000MaleDrug and device company payments (2025): $1,864Jessica L. Schachter, DO
✓ Accepts Medicare assignmentMIPS score (2024): 94.6/100✓ TelehealthGraduated 2017 · Lake Erie College of Osteopathic Medicine, ErieFemaleDrug and device company payments (2025): $1,194Nikhil P. Warrier, MD
✓ Accepts Medicare assignmentMIPS score (2024): 94.6/100✓ TelehealthGraduated 2009MaleDrug and device company payments (2025): $49,664Jennifer L. Wong, MD
✓ Accepts Medicare assignmentMIPS score (2024): 94.6/100✓ TelehealthGraduated 2002 · University of California, San Diego School of MedicineFemaleDrug and device company payments (2025): $1,830Tae Y. Yang, MD
✓ Accepts Medicare assignmentMIPS score (2024): 94.6/100✓ TelehealthGraduated 2008 · University of California, Geffen School of MedicineMaleOther offices in Fountain Valley: 1Drug and device company payments (2025): $1,779Tuan A. Nguyen, MD
✓ Accepts Medicare assignmentMIPS score (2024): 90.8/100Graduated 2007 · University of Massachusetts Medical SchoolMaleDrug and device company payments (2025): $703Anita Phancao, MD
✓ Accepts Medicare assignmentMIPS score (2024): 87.9/100Graduated 2006FemaleDrug and device company payments (2025): $140Tuan Lam, MD
✓ Accepts Medicare assignmentMIPS score (2024): 87.2/100Graduated 1997 · Johns Hopkins University School of MedicineMaleDrug and device company payments (2025): $1,250Steven Le, MD
✓ Accepts Medicare assignmentMIPS score (2024): 41.4/100✓ TelehealthGraduated 2006 · University of California, Geffen School of MedicineMaleDrug and device company payments (2025): $202Bao T. Bui, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 2007 · Pennsylvania State University College of MedicineMaleDrug and device company payments (2025): $80,713Simon K. Cheung, MD
✓ Accepts Medicare assignmentGraduated 1994 · Loma Linda University School of MedicineMaleOther offices in Fountain Valley: 1Drug and device company payments (2025): $183David S. Kramer, MD
✓ Accepts Medicare assignmentGraduated 1980 · University of Connecticut School of MedicineMaleOther offices in Fountain Valley: 1Drug and device company payments (2025): $74Abdul Kareem Sharaf, MD
✓ Accepts Medicare assignmentGraduated 2011MaleDrug and device company payments (2025): $319Harpreet Singh, MD
✓ Accepts Medicare assignmentGraduated 1998MaleOther offices in Fountain Valley: 1Drug and device company payments (2025): $506
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 Fountain Valley
- Primary care doctors109
- Nurse practitioners57
- Dermatologists5
- Orthopedic surgeons27
- Neurologists22
- Gastroenterologists15
- Ophthalmologists20
- Optometrists14
- Podiatrists5
- Pulmonologists11
- Nephrologists24
- Endocrinologists3
- ENT doctors4
- Oncologists25
- Psychiatrists3
- Psychologists9
- Therapists and counselors9
- Physical therapists39
- Occupational therapists5
- Chiropractors18
- Gynecologists26
- General surgeons19
- Vascular surgeons3
- Pain management doctors4
- Physiatrists5
- Dietitians6
- Neurosurgeons3
- Infectious disease doctors6
Other care in Fountain Valley
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).