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General surgeons who accept Medicare in San Mateo, CA
CMS lists 13 clinicians in this specialty with a practice address in San Mateo. Accept Medicare assignment (the Medicare-approved amount as full payment): 13. Offer telehealth: 5.
Typical amounts Medicare approves in ZIP 94401 (2024 Medicare rates, the latest CMS has published): a new-patient visit $105, of which you pay about $26; a follow-up visit $85, of which you pay about $21 — 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.
Grace Pyon, MD
✓ Accepts Medicare assignmentMIPS score (2024): 89/100✓ TelehealthGraduated 2018FemaleOther offices in San Mateo: 2Drug and device company payments (2025): $1,171Michaela Simoncini, MD
✓ Accepts Medicare assignmentMIPS score (2024): 89/100✓ TelehealthGraduated 2017FemaleOther offices in San Mateo: 5Drug and device company payments (2025): $35James Badger, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 1985 · University of California, Davis School of MedicineMaleDrug and device company payments (2025): $265Runi Chattopadhyay, MD
✓ Accepts Medicare assignmentGraduated 1996FemaleOther offices in San Mateo: 1David Jegge, MD
✓ Accepts Medicare assignmentGraduated 1979 · New York University School of MedicineMaleBeemen N. Khalil, MD
✓ Accepts Medicare assignmentGraduated 2004MaleDrug and device company payments (2025): $239,730Geoffrey Krampitz, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 2017 · Stanford University School of MedicineMaleOther offices in San Mateo: 3Drug and device company payments (2025): $26,175Shelley M. Marks, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 1993FemaleDrug and device company payments (2025): $84Jinhee Park, MD
✓ Accepts Medicare assignmentGraduated 2011 · University of California, Davis School of MedicineFemaleDrug and device company payments (2025): $56Sanford E. Roberts III, MD
✓ Accepts Medicare assignmentGraduated 2018 · Perelman School of Med at the University of PennsylvaniaMaleTobin Schneider, MD
✓ Accepts Medicare assignmentGraduated 1988 · Harvard Medical SchoolMaleOther offices in San Mateo: 1Lowell A. Wetter, MD
✓ Accepts Medicare assignmentGraduated 1991 · University of California, San Francisco School of MedicineMaleOther offices in San Mateo: 1Drug and device company payments (2025): $25Amanda J. Wheeler, MD
✓ Accepts Medicare assignmentGraduated 2002 · Oregon Health Sciences University School of MedicineFemale
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 San Mateo
- Primary care doctors158
- Geriatricians3
- Nurse practitioners105
- Cardiologists38
- Dermatologists15
- Orthopedic surgeons18
- Neurologists38
- Gastroenterologists7
- Ophthalmologists28
- Optometrists35
- Podiatrists13
- Urologists9
- Pulmonologists5
- Nephrologists8
- Endocrinologists4
- Rheumatologists9
- ENT doctors9
- Oncologists7
- Psychiatrists75
- Psychologists16
- Therapists and counselors51
- Physical therapists52
- Audiologists7
- Chiropractors22
- Gynecologists19
- Vascular surgeons7
- Physiatrists8
- Allergists14
- Dietitians3
- Neurosurgeons3
- Infectious disease doctors5
Other care in San Mateo
Hospitals · Nursing homes · Dialysis centers · Home health agencies · Hospices
Nearby cities
- Burlingame11
- San Carlos4
- Redwood City22
- South San Francisco5
- Daly City3
- Stanford69
- Palo Alto28
- San Leandro15
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).