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Gastroenterologists who accept Medicare in La Mirada, CA
CMS lists 9 clinicians in this specialty with a practice address in La Mirada. Accept Medicare assignment (the Medicare-approved amount as full payment): 9. Offer telehealth: 1.
Typical amounts Medicare approves in ZIP 90638 (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.
Richard E. McGuire Jr., MD
✓ Accepts Medicare assignmentMIPS score (2024): 90.3/100Graduated 1984 · New York University School of MedicineMaleDrug and device company payments (2025): $76Ashwin Ashok, MD
✓ Accepts Medicare assignmentMIPS score (2024): 78.6/100✓ TelehealthGraduated 2005MaleDrug and device company payments (2025): $1,694Kevin R. Dholaria, MD
✓ Accepts Medicare assignmentMIPS score (2024): 78.6/100Graduated 2012MaleDrug and device company payments (2025): $904Renee Palta, MD
✓ Accepts Medicare assignmentMIPS score (2024): 78.6/100Graduated 2006FemaleDrug and device company payments (2025): $1,474Alex G. Shindel, MD
✓ Accepts Medicare assignmentMIPS score (2024): 78.6/100Graduated 2012 · State University of NY Upstate Medical UniversityMaleDrug and device company payments (2025): $1,387Neal M. Shindel, MD
✓ Accepts Medicare assignmentMIPS score (2024): 78.6/100Graduated 1980 · State University of NY Upstate Medical UniversityMaleDrug and device company payments (2025): $1,015Jiaming Zhu, MD
✓ Accepts Medicare assignmentMIPS score (2024): 78.6/100Graduated 2012 · Jefferson Medical College of Thomas Jefferson UniversityMaleDrug and device company payments (2025): $1,299Sara Alleyasin, DO
✓ Accepts Medicare assignmentGraduated 2019FemaleDrug and device company payments (2025): $173Amol S. Koldhekar, MD
✓ Accepts Medicare assignmentGraduated 2018 · University of Pittsburgh School of MedicineMaleDrug and device company payments (2025): $647
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 La Mirada
- Primary care doctors139
- Nurse practitioners61
- Cardiologists18
- Dermatologists4
- Orthopedic surgeons10
- Neurologists8
- Ophthalmologists5
- Optometrists5
- Podiatrists5
- Urologists4
- Nephrologists3
- ENT doctors3
- Psychiatrists12
- Physical therapists5
- Audiologists4
- Chiropractors7
- Gynecologists22
- General surgeons15
Other care in La Mirada
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).