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General surgeons who accept Medicare in San Marcos, CA
CMS lists 23 clinicians in this specialty with a practice address in San Marcos. Accept Medicare assignment (the Medicare-approved amount as full payment): 23. Offer telehealth: 1.
Typical amounts Medicare approves in ZIP 92078 (2024 Medicare rates, the latest CMS has published): a new-patient visit $95, of which you pay about $24; a follow-up visit $77, of which you pay about $19 — 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.
John P. Davis, MD
✓ Accepts Medicare assignmentMIPS score (2024): 86.4/100Graduated 2011MaleDrug and device company payments (2025): $5,602Rodolfo V. Agbunag, MD
✓ Accepts Medicare assignmentGraduated 1997 · University of California, Davis School of MedicineMaleSayed R. Bokhari, MD
✓ Accepts Medicare assignmentGraduated 1975MaleDrug and device company payments (2025): $102Kristian L. Brown, MD
✓ Accepts Medicare assignmentGraduated 2005 · University of California, San Diego School of MedicineMaleGregory S. Campbell, MD
✓ Accepts Medicare assignmentGraduated 1991MaleDrug and device company payments (2025): $5,577David Cloyd, MD
✓ Accepts Medicare assignmentGraduated 1980 · University of Nebraska College of MedicineMaleDrug and device company payments (2025): $69Cecilia Y. Cruz, MD
✓ Accepts Medicare assignmentGraduated 2021FemalePouya Dastouri, MD
✓ Accepts Medicare assignmentGraduated 2005MaleOther offices in San Marcos: 1Michael L. Ditmars, MD
✓ Accepts Medicare assignmentGraduated 1993 · University of California, San Francisco School of MedicineMaleSteven T. Elliott, MD
✓ Accepts Medicare assignmentGraduated 2005 · University of Iowa, RJ & L Carver College of MedicineMaleGina N. Farinholt, MD
✓ Accepts Medicare assignmentGraduated 2007 · University of California, San Diego School of MedicineFemaleOther offices in San Marcos: 1Mark A. Healey, MD
✓ Accepts Medicare assignmentGraduated 1986 · Queen's School of MedicineMaleDrug and device company payments (2025): $69Michael S. Katz, MD
✓ Accepts Medicare assignmentGraduated 2001MaleDrug and device company payments (2025): $133Jennifer L. Khoe, MD
✓ Accepts Medicare assignmentGraduated 2000 · State University of New York at Buffalo School of MedicineFemaleOther offices in San Marcos: 1Matthew Kozloff, MD
✓ Accepts Medicare assignmentGraduated 2011MaleDrug and device company payments (2025): $2,787Raafat J. Kuk, MD
✓ Accepts Medicare assignmentGraduated 2018 · University of Arizona College of Medicine - PhoenixMaleDrug and device company payments (2025): $127Ran B. Luo, MD
✓ Accepts Medicare assignmentGraduated 2010 · University of California, Davis School of MedicineMaleDrug and device company payments (2025): $2,834Nhien H. Nguyen, MD
✓ Accepts Medicare assignmentGraduated 2005MaleJaclyn T. Parker, MD
✓ Accepts Medicare assignmentGraduated 2004 · Johns Hopkins University School of MedicineFemaleOther offices in San Marcos: 1Pouria Parsa, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 2009 · University of California, San Diego School of MedicineMaleDrug and device company payments (2025): $199Colin M. Parsons, MD
✓ Accepts Medicare assignmentGraduated 2002 · Creighton University School of MedicineMaleCamellia Racu-Keefer, MD
✓ Accepts Medicare assignmentGraduated 2004 · Medical College of WisconsinFemaleOther offices in San Marcos: 1John T. Steele, MD
✓ Accepts Medicare assignmentGraduated 1987 · Medical University of South Carolina College of MedicineMaleDrug and device company payments (2025): $69
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 Marcos
- Primary care doctors149
- Nurse practitioners31
- Cardiologists15
- Dermatologists6
- Orthopedic surgeons13
- Neurologists8
- Gastroenterologists4
- Ophthalmologists9
- Optometrists3
- Podiatrists10
- Urologists11
- Pulmonologists5
- Nephrologists8
- Rheumatologists4
- ENT doctors6
- Oncologists7
- Psychiatrists14
- Psychologists8
- Therapists and counselors44
- Physical therapists78
- Occupational therapists8
- Chiropractors21
- Gynecologists17
- Vascular surgeons4
- Physiatrists4
- Allergists3
Other care in San Marcos
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).