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Nurse practitioners who accept Medicare in Diamond Bar, CA
CMS lists 21 clinicians in this specialty with a practice address in Diamond Bar. Accept Medicare assignment (the Medicare-approved amount as full payment): 21. Offer telehealth: 16.
Nurse practitioners can diagnose, treat and prescribe, and many work as primary care clinicians for Medicare patients.
Typical amounts Medicare approves in ZIP 91765 (2024 Medicare rates, the latest CMS has published): a new-patient visit $96, of which you pay about $24; 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.
Paul Arredondo Jr., NP
✓ Accepts Medicare assignmentGraduated 2021MaleOther offices in Diamond Bar: 1Drug and device company payments (2025): $26Jennifer C. Brown, NP
✓ Accepts Medicare assignment✓ TelehealthGraduated 2024FemaleVilma P. Cariaga, NP
✓ Accepts Medicare assignment✓ TelehealthGraduated 2007FemaleEmalee A. Corbera, NP
✓ Accepts Medicare assignment✓ TelehealthGraduated 2006 · University of California, Irvine, California College of MedicineFemaleOther offices in Diamond Bar: 1Drug and device company payments (2025): $5,004Derrick Flowers, NP
✓ Accepts Medicare assignmentGraduated 2024MaleCong Gao, NP
✓ Accepts Medicare assignment✓ TelehealthGraduated 2019FemaleMarialuisa Garcia, NP
✓ Accepts Medicare assignmentGraduated 2016FemaleGerald Goco, NP
✓ Accepts Medicare assignmentGraduated 2022MaleDrug and device company payments (2025): $249Aida E. Jimenez-Lopez, NP
✓ Accepts Medicare assignment✓ TelehealthGraduated 2020FemaleHelen B. Kwak, NP
✓ Accepts Medicare assignment✓ TelehealthGraduated 2015FemaleDrug and device company payments (2025): $2,565Luminita M. Mann, NP
✓ Accepts Medicare assignment✓ TelehealthGraduated 2009FemaleOther offices in Diamond Bar: 1Drug and device company payments (2025): $1,427Donna L. McKenzie, NP
✓ Accepts Medicare assignment✓ TelehealthGraduated 1999 · University of Utah School of MedicineFemaleJill Olmstead, NP
✓ Accepts Medicare assignment✓ TelehealthGraduated 1997FemaleDrug and device company payments (2025): $5,940Nancy Rehfeld, NP
✓ Accepts Medicare assignment✓ TelehealthGraduated 2018FemaleDrug and device company payments (2025): $1,718Verina Salib, NP
✓ Accepts Medicare assignmentGraduated 2023 · Vanderbilt University School of MedicineFemaleDrug and device company payments (2025): $19Sarah Stewart, NP
✓ Accepts Medicare assignment✓ TelehealthGraduated 2021FemaleGenevieve Taguinod, NP
✓ Accepts Medicare assignment✓ TelehealthGraduated 2003FemaleDrug and device company payments (2025): $2,651Jessica G. Weaver, NP
✓ Accepts Medicare assignment✓ TelehealthGraduated 2015FemaleDrug and device company payments (2025): $604Xinhe Wei, NP
✓ Accepts Medicare assignment✓ TelehealthGraduated 2023FemaleDrug and device company payments (2025): $7,260Charlaine I. Williamson, NP
✓ Accepts Medicare assignment✓ TelehealthGraduated 2010FemaleDrug and device company payments (2025): $979Steve Yang, NP
✓ Accepts Medicare assignment✓ TelehealthGraduated 2017MaleDrug and device company payments (2025): $2,271
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 Diamond Bar
- Primary care doctors81
- Cardiologists12
- Dermatologists6
- Orthopedic surgeons7
- Gastroenterologists4
- Optometrists12
- Podiatrists3
- Pulmonologists6
- Endocrinologists4
- Rheumatologists4
- Oncologists7
- Psychiatrists11
- Psychologists7
- Therapists and counselors4
- Physical therapists16
- Chiropractors5
Other care in Diamond Bar
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).