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Neurologists who accept Medicare in Vacaville, CA
CMS lists 12 clinicians in this specialty with a practice address in Vacaville. Accept Medicare assignment (the Medicare-approved amount as full payment): 12. Offer telehealth: 9.
Typical amounts Medicare approves in ZIP 95687 (2024 Medicare rates, the latest CMS has published): a new-patient visit $146, of which you pay about $36; a follow-up visit $113, of which you pay about $28 — 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.
Adriana Y. Koek, MD
✓ Accepts Medicare assignmentMIPS score (2024): 94.6/100✓ TelehealthGraduated 2019 · Florida Atlantic University, College of MedicineFemaleRuby S. Ali, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 2005FemaleOther offices in Vacaville: 1Drug and device company payments (2025): $4,163Ameer Almullahassani, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 2002MaleOther offices in Vacaville: 1Drug and device company payments (2025): $800Yuan Chen, MD
✓ Accepts Medicare assignmentGraduated 2001 · R Franklin University of Med & Sci/chicago Medical SchoolFemaleDrug and device company payments (2025): $97Janice Y. Joo, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 2016FemaleDrug and device company payments (2025): $2,585Parvinder Kaur, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 2013FemaleDevenkumar H. Mistry, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 2003 · University of California, Davis School of MedicineMaleGeorge Nune, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 2008MaleDrug and device company payments (2025): $4,815Lise Phan, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 2015FemaleDrug and device company payments (2025): $2,415Jyes Querubin, MD
✓ Accepts Medicare assignmentGraduated 2012FemaleDrug and device company payments (2025): $1,679Brian D. Stephens, MD
✓ Accepts Medicare assignmentGraduated 2015 · Uniformed Services Uhs Fe Hebert School of MedMaleDavid A. Valentine, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 2015 · University of Rochester School of Medicine and DentistryMaleDrug and device company payments (2025): $3,359
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 Vacaville
- Primary care doctors154
- Nurse practitioners69
- Cardiologists18
- Dermatologists8
- Orthopedic surgeons14
- Gastroenterologists9
- Ophthalmologists12
- Optometrists6
- Podiatrists12
- Urologists11
- Pulmonologists3
- Nephrologists4
- ENT doctors4
- Oncologists9
- Psychiatrists21
- Psychologists17
- Therapists and counselors34
- Physical therapists30
- Occupational therapists3
- Chiropractors11
- Gynecologists15
- General surgeons11
- Vascular surgeons6
- Physiatrists6
- Allergists4
- Neurosurgeons4
- Infectious disease doctors4
Other care in Vacaville
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).