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Gastroenterologists who accept Medicare in Stanford, CA

CMS lists 56 clinicians in this specialty with a practice address in Stanford. Accept Medicare assignment (the Medicare-approved amount as full payment): 56. Offer telehealth: 56.

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Order: clinicians who accept assignment first, then by MIPS score (highest first), then by last name.

• Samuel N. Marcus, MD

  Stanford Health Care · 300 Pasteur Dr, 94305 · (650) 723-4000
  ✓ Accepts Medicare assignmentMIPS score (2024): 92.5/100✓ TelehealthGraduated 1977MaleDrug and device company payments (2025): $1,211
  Hospitals: El Camino Health, Stanford Health Care

• Aijaz Ahmed, MD

  Stanford Health Care · 300 Pasteur Dr, 94305 · (650) 723-4000
  ✓ Accepts Medicare assignmentMIPS score (2024): 88.5/100✓ TelehealthGraduated 1990MaleDrug and device company payments (2025): $654
  Hospitals: Stanford Health Care, Marian Regional Medical Center, French Hospital Medical Center

• Subhas Banerjee, MD

  Stanford Health Care · 300 Pasteur Dr, 94305 · (650) 723-4000
  ✓ Accepts Medicare assignmentMIPS score (2024): 88.5/100✓ TelehealthGraduated 1983MaleDrug and device company payments (2025): $414
  Hospitals: Stanford Health Care

• John O. Clarke, MD

  Stanford Health Care · 300 Pasteur Dr, 94305 · (650) 723-4000
  ✓ Accepts Medicare assignmentMIPS score (2024): 88.5/100✓ TelehealthGraduated 1999 · University of Missouri, Columbia School of MedicineMaleDrug and device company payments (2025): $130
  Hospitals: Stanford Health Care

• Tami J. Daugherty, MD

  Stanford Health Care · 300 Pasteur Dr, 94305 · (650) 723-4000
  ✓ Accepts Medicare assignmentMIPS score (2024): 88.5/100✓ TelehealthGraduated 1999 · Columbia University College of Physicians and SurgeonsFemaleDrug and device company payments (2025): $29
  Hospitals: Stanford Health Care, Renown Regional Medical Center, Stanford Health Care Tri-Valley

• Renumathy Dhanasekaran, MD

  Stanford Health Care · 300 Pasteur Dr, 94305 · (650) 723-4000
  ✓ Accepts Medicare assignmentMIPS score (2024): 88.5/100✓ TelehealthGraduated 2005FemaleDrug and device company payments (2025): $1,611
  Hospitals: Stanford Health Care, Stanford Health Care Tri-Valley

• Nikki K. Duong, MD

  Stanford Health Care · 300 Pasteur Dr, 94305 · (650) 723-4000
  ✓ Accepts Medicare assignmentMIPS score (2024): 88.5/100✓ TelehealthGraduated 2016 · George Washington University School of MedicineMaleDrug and device company payments (2025): $3,426
  Hospitals: Stanford Health Care, Stanford Health Care Tri-Valley

• Chiazotam N. Ekekezie, MD

  Stanford Health Care · 300 Pasteur Dr, 94305 · (650) 723-4000
  ✓ Accepts Medicare assignmentMIPS score (2024): 88.5/100✓ TelehealthGraduated 2014 · University of Missouri, Kansas City, School of MedicineFemale
  Hospitals: Stanford Health Care

• Patricia A. Garcia, MD

  Stanford Health Care · 300 Pasteur Dr, 94305 · (650) 723-4000
  ✓ Accepts Medicare assignmentMIPS score (2024): 88.5/100✓ TelehealthGraduated 2008 · University of Michigan Medical SchoolFemaleDrug and device company payments (2025): $29
  Hospitals: Stanford Health Care, Stanford Health Care Tri-Valley, Alta Bates Summit Medical Center - Alta Bates Camp

• David E. Goldenberg, MD

  Stanford Health Care · 300 Pasteur Dr, 94305 · (650) 723-4000
  ✓ Accepts Medicare assignmentMIPS score (2024): 88.5/100✓ TelehealthGraduated 2014 · Geisel School of Medicine at DartmouthMaleDrug and device company payments (2025): $29
  Hospitals: Stanford Health Care, Tampa General Hospital

• Amir H. Gougol, MD

  Stanford Health Care · 300 Pasteur Dr, 94305 · (650) 723-4000
  ✓ Accepts Medicare assignmentMIPS score (2024): 88.5/100✓ TelehealthGraduated 2011Male
  Hospitals: Stanford Health Care

• Edith Y. Ho, MD

  Stanford Health Care · 300 Pasteur Dr, 94305 · (650) 723-4000
  ✓ Accepts Medicare assignmentMIPS score (2024): 88.5/100✓ TelehealthGraduated 2007FemaleDrug and device company payments (2025): $338
  Hospitals: Stanford Health Care

• Joo H. Hwang, MD

  Stanford Health Care · 300 Pasteur Dr, 94305 · (650) 723-4000
  ✓ Accepts Medicare assignmentMIPS score (2024): 88.5/100✓ TelehealthGraduated 1997 · University of Chicago, Pritzker School of MedicineMaleDrug and device company payments (2025): $213,271
  Hospitals: Stanford Health Care

• Sajid Jalil, MD

  Stanford Health Care · 300 Pasteur Dr, 94305 · (650) 723-4000
  ✓ Accepts Medicare assignmentMIPS score (2024): 88.5/100✓ TelehealthGraduated 1990MaleDrug and device company payments (2025): $626
  Hospitals: Stanford Health Care, Stanford Health Care Tri-Valley, Hazel Hawkins Memorial Hospital

• Afrin N. Kamal, MD

  Stanford Health Care · 300 Pasteur Dr, 94305 · (650) 723-4000
  ✓ Accepts Medicare assignmentMIPS score (2024): 88.5/100✓ TelehealthGraduated 2011 · University of Missouri, Kansas City, School of MedicineFemaleDrug and device company payments (2025): $121
  Hospitals: Stanford Health Care

• Kian Keyashian, MD

  Stanford Health Care · 300 Pasteur Dr, 94305 · (650) 723-4000
  ✓ Accepts Medicare assignmentMIPS score (2024): 88.5/100✓ TelehealthGraduated 2005MaleDrug and device company payments (2025): $152
  Hospitals: Stanford Health Care, Stanford Health Care Tri-Valley

• Karen C. Kim, MD

  Stanford Health Care · 300 Pasteur Dr, 94305 · (650) 723-4000
  ✓ Accepts Medicare assignmentMIPS score (2024): 88.5/100✓ TelehealthGraduated 2005 · Stanford University School of MedicineFemale
  Hospitals: Stanford Health Care

• Paul Y. Kwo, MD

  Stanford Health Care · 300 Pasteur Dr, 94305 · (650) 723-4000
  ✓ Accepts Medicare assignmentMIPS score (2024): 88.5/100✓ TelehealthGraduated 1988 · Wayne State University School of MedicineMaleDrug and device company payments (2025): $24,686
  Hospitals: Stanford Health Care, Stanford Health Care Tri-Valley, Community Hospital of the Monterey Peninsula

• Allison J. Kwong, MD

  Stanford Health Care · 300 Pasteur Dr, 94305 · (650) 723-4000
  ✓ Accepts Medicare assignmentMIPS score (2024): 88.5/100✓ TelehealthGraduated 2012Female
  Hospitals: Stanford Health Care, Stanford Health Care Tri-Valley

• Uri Ladabaum, MD

  Stanford Health Care · 300 Pasteur Dr, 94305 · (650) 723-4000
  ✓ Accepts Medicare assignmentMIPS score (2024): 88.5/100✓ TelehealthGraduated 1991 · University of California, San Francisco School of MedicineMaleDrug and device company payments (2025): $226
  Hospitals: Stanford Health Care

• Alice A. Lee, MD

  Stanford Health Care · 300 Pasteur Dr, 94305 · (650) 723-4000
  ✓ Accepts Medicare assignmentMIPS score (2024): 88.5/100✓ TelehealthGraduated 2017 · Rush Medical College of Rush UniversityFemale
  Hospitals: Stanford Health Care

• Andrew A. Li, MD

  Stanford Health Care · 300 Pasteur Dr, 94305 · (650) 723-4000
  ✓ Accepts Medicare assignmentMIPS score (2024): 88.5/100✓ TelehealthGraduated 2016 · Harvard Medical SchoolMaleDrug and device company payments (2025): $119,544
  Hospitals: Stanford Health Care, Stanford Health Care Tri-Valley

• David Limsui, MD

  Stanford Health Care · 300 Pasteur Dr, 94305 · (650) 723-4000
  ✓ Accepts Medicare assignmentMIPS score (2024): 88.5/100✓ TelehealthGraduated 2004 · University of Illinois College of Med (chi/peor/rock/chm-Urb)MaleDrug and device company payments (2025): $52
  Hospitals: Stanford Health Care

• Mindie Nguyen, MD

  Stanford Health Care · 300 Pasteur Dr, 94305 · (650) 723-4000
  ✓ Accepts Medicare assignmentMIPS score (2024): 88.5/100✓ TelehealthGraduated 1992 · University of California, San Diego School of MedicineFemaleDrug and device company payments (2025): $125
  Hospitals: Stanford Health Care, Stanford Health Care Tri-Valley

• Walter G. Park, MD

  Stanford Health Care · 300 Pasteur Dr, 94305 · (650) 723-4000
  ✓ Accepts Medicare assignmentMIPS score (2024): 88.5/100✓ TelehealthGraduated 2003 · Johns Hopkins University School of MedicineMaleDrug and device company payments (2025): $86,880
  Hospitals: Stanford Health Care, Stanford Health Care Tri-Valley

• Roger W. Sands, MD

  Stanford Health Care · 300 Pasteur Dr, 94305 · (650) 723-4000
  ✓ Accepts Medicare assignmentMIPS score (2024): 88.5/100✓ TelehealthGraduated 2014 · Northwestern University Feinberg Medical SchoolMale
  Hospitals: Stanford Health Care, Stanford Health Care Tri-Valley

• Pradeep K. Siddappa, MD

  Stanford Health Care · 300 Pasteur Dr, 94305 · (650) 723-4000
  ✓ Accepts Medicare assignmentMIPS score (2024): 88.5/100✓ TelehealthGraduated 2004MaleDrug and device company payments (2025): $2,610
  Hospitals: Stanford Health Care, Stanford Health Care Tri-Valley

• Sundeep Singh, MD

  Stanford Health Care · 300 Pasteur Dr, 94305 · (650) 723-4000
  ✓ Accepts Medicare assignmentMIPS score (2024): 88.5/100✓ TelehealthGraduated 2007 · University of Michigan Medical SchoolMaleDrug and device company payments (2025): $43,714
  Hospitals: Stanford Health Care, Stanford Health Care Tri-Valley, Mark Twain Medical Center

• Irene S. Sonu, MD

  Stanford Health Care · 300 Pasteur Dr, 94305 · (650) 723-4000
  ✓ Accepts Medicare assignmentMIPS score (2024): 88.5/100✓ TelehealthGraduated 2010FemaleDrug and device company payments (2025): $5,157
  Hospitals: Stanford Health Care, Stanford Health Care Tri-Valley

• Sean P. Spencer, MD

  Stanford Health Care · 300 Pasteur Dr, 94305 · (650) 723-4000
  ✓ Accepts Medicare assignmentMIPS score (2024): 88.5/100✓ TelehealthGraduated 2015MaleDrug and device company payments (2025): $91
  Hospitals: Stanford Health Care

• Sarah E. Streett, MD

  Stanford Health Care · 300 Pasteur Dr, 94305 · (650) 723-4000
  ✓ Accepts Medicare assignmentMIPS score (2024): 88.5/100✓ TelehealthGraduated 1991 · Johns Hopkins University School of MedicineFemaleDrug and device company payments (2025): $29
  Hospitals: Stanford Health Care

• Natalia J. Torok, MD

  Stanford Health Care · 300 Pasteur Dr, 94305 · (650) 723-4000
  ✓ Accepts Medicare assignmentMIPS score (2024): 88.5/100✓ TelehealthGraduated 1988Female
  Hospitals: Stanford Health Care

• Mike T. Wei, MD

  Stanford Health Care · 300 Pasteur Dr, 94305 · (650) 723-4000
  ✓ Accepts Medicare assignmentMIPS score (2024): 88.5/100✓ TelehealthGraduated 2016MaleDrug and device company payments (2025): $174,823
  Hospitals: Stanford Health Care, Stanford Health Care Tri-Valley

• Aaron J. Yeoh, MD

  Stanford Health Care · 300 Pasteur Dr, 94305 · (650) 723-4000
  ✓ Accepts Medicare assignmentMIPS score (2024): 88.5/100✓ TelehealthGraduated 2017 · Harvard Medical SchoolMaleDrug and device company payments (2025): $1,624
  Hospitals: Stanford Health Care, Stanford Health Care Tri-Valley

• Harvey S. Young, MD

  Stanford Health Care · 300 Pasteur Dr, 94305 · (650) 723-4000
  ✓ Accepts Medicare assignmentMIPS score (2024): 88.5/100✓ TelehealthGraduated 1979 · Northwestern University Feinberg Medical SchoolMale
  Hospitals: Stanford Health Care

• Margaret J. Zhou, MD

  Stanford Health Care · 300 Pasteur Dr, 94305 · (650) 723-4000
  ✓ Accepts Medicare assignmentMIPS score (2024): 88.5/100✓ TelehealthGraduated 2017 · University of California, San Francisco School of MedicineFemaleDrug and device company payments (2025): $163,013
  Hospitals: Stanford Health Care

• Smit S. Deliwala, MD

  Stanford Health Care · 300 Pasteur Dr, 94305 · (650) 723-4000
  ✓ Accepts Medicare assignment✓ TelehealthGraduated 2018MaleDrug and device company payments (2025): $2,433
  Hospitals: Stanford Health Care

• Jennifer R. Dimino, MD

  Stanford Health Care · 300 Pasteur Dr, 94305 · (650) 723-4000
  ✓ Accepts Medicare assignment✓ TelehealthGraduated 2018 · University of Miami, LM Miller School of MedicineFemale
  Hospitals: Stanford Health Care

• Abhishek Dimopoulos-Verma, MD

  Stanford Health Care · 300 Pasteur Dr, 94305 · (650) 723-4000
  ✓ Accepts Medicare assignment✓ TelehealthGraduated 2018MaleDrug and device company payments (2025): $595
  Hospitals: Stanford Health Care

• Samer S. Eldika, MD

  Stanford Health Care · 300 Pasteur Dr, 94305 · (650) 723-4000
  ✓ Accepts Medicare assignment✓ TelehealthGraduated 1998MaleDrug and device company payments (2025): $1,176
  Hospitals: Stanford Health Care, Stanford Health Care Tri-Valley

• Christopher R. Entwisle, MD

  Stanford Health Care · 300 Pasteur Dr, 94305 · (650) 723-4000
  ✓ Accepts Medicare assignment✓ TelehealthGraduated 2000 · New York Medical CollegeMaleDrug and device company payments (2025): $29
  Hospitals: Stanford Health Care Tri-Valley, Stanford Health Care

• Tahereh Ghaziani, MD

  Stanford Health Care · 300 Pasteur Dr, 94305 · (650) 723-4000
  ✓ Accepts Medicare assignment✓ TelehealthGraduated 1997FemaleDrug and device company payments (2025): $55
  Hospitals: Stanford Health Care, Stanford Health Care Tri-Valley

• Yan Jiang, MD

  Stanford Health Care · 300 Pasteur Dr, 94305 · (650) 723-4000
  ✓ Accepts Medicare assignment✓ TelehealthGraduated 2015 · New York University School of MedicineMale
  Hospitals: Stanford Health Care, Stanford Health Care Tri-Valley

• Yi Jiang, MD

  Stanford Health Care · 300 Pasteur Dr, 94305 · (650) 723-4000
  ✓ Accepts Medicare assignment✓ TelehealthGraduated 2013FemaleDrug and device company payments (2025): $29
  Hospitals: Stanford Health Care

• Nathan G. Kim, MD

  Stanford Health Care · 300 Pasteur Dr, 94305 · (650) 723-4000
  ✓ Accepts Medicare assignment✓ TelehealthGraduated 2018 · Stanford University School of MedicineMale
  Hospitals: Stanford Health Care, Stanford Health Care Tri-Valley

• Suejin S. Kim, MD

  Stanford Health Care · 300 Pasteur Dr, 94305 · (650) 723-4000
  ✓ Accepts Medicare assignment✓ TelehealthGraduated 2004 · University of Chicago, Pritzker School of MedicineFemaleDrug and device company payments (2025): $61,633
  Hospitals: Stanford Health Care, Good Samaritan Hospital

• James M. Lin, MD

  Stanford Health Care · 300 Pasteur Dr, 94305 · (650) 723-4000
  ✓ Accepts Medicare assignment✓ TelehealthGraduated 2005 · Vanderbilt University School of MedicineMaleDrug and device company payments (2025): $220
  Hospitals: Stanford Health Care Tri-Valley, Stanford Health Care

• Hemnishil K. Marella, DO

  Stanford Health Care · 300 Pasteur Dr, 94305 · (650) 723-4000
  ✓ Accepts Medicare assignment✓ TelehealthGraduated 2017 · Lincoln Mem Univ, Debusk Col of Osteopathic MedMale
  Hospitals: Stanford Health Care Tri-Valley, Stanford Health Care

• Leila Neshatian, MD

  Stanford Health Care · 300 Pasteur Dr, 94305 · (650) 723-4000
  ✓ Accepts Medicare assignment✓ TelehealthGraduated 2001FemaleDrug and device company payments (2025): $2,904
  Hospitals: Stanford Health Care

• Tu A. Nguyen, MD

  University Healthcare Alliance · 300 Pasteur Dr, 94305
  ✓ Accepts Medicare assignment✓ TelehealthGraduated 2003 · University of California, Irvine, California College of MedicineMaleDrug and device company payments (2025): $31
  Hospitals: Stanford Health Care

• Gopanandan Parthasarathy, MD

  Stanford Health Care · 300 Pasteur Dr, 94305 · (650) 723-4000
  ✓ Accepts Medicare assignment✓ TelehealthGraduated 2014MaleDrug and device company payments (2025): $1,263
  Hospitals: Stanford Health Care, Stanford Health Care Tri-Valley

• Harpriya Singh, MD

  Stanford Health Care · 300 Pasteur Dr, 94305 · (650) 723-4000
  ✓ Accepts Medicare assignment✓ TelehealthGraduated 2000Female
  Hospitals: Stanford Health Care Tri-Valley, Stanford Health Care

• Kayvon Sotoudeh, MD

  Stanford Health Care · 300 Pasteur Dr, 94305 · (650) 723-4000
  ✓ Accepts Medicare assignment✓ TelehealthGraduated 2017 · University of Southern California Keck School of MedicineMale
  Hospitals: Stanford Health Care Tri-Valley, Stanford Health Care

• Rahul Verma, MD

  University Healthcare Alliance · 300 Pasteur Dr, 94305
  ✓ Accepts Medicare assignment✓ TelehealthGraduated 1995 · Medical College of Georgia School of MedicineMaleDrug and device company payments (2025): $97
  Hospitals: Stanford Health Care, Stanford Health Care Tri-Valley

• Naohisa Yahagi, MD

  Stanford Health Care · 300 Pasteur Dr, 94305 · (650) 723-4000
  ✓ Accepts Medicare assignment✓ TelehealthGraduated 1987Male
  Hospitals: Stanford Health Care

• Allison Zhang, DO

  Stanford Health Care · 300 Pasteur Dr, 94305 · (650) 723-4000
  ✓ Accepts Medicare assignment✓ TelehealthGraduated 2013 · Wayne State University School of MedicineFemaleDrug and device company payments (2025): $23
  Hospitals: Stanford Health Care, Good Samaritan Hospital

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 Stanford

• Primary care doctors369
• Geriatricians4
• Nurse practitioners386
• Cardiologists99
• Dermatologists54
• Orthopedic surgeons51
• Neurologists113
• Ophthalmologists63
• Optometrists6
• Urologists24
• Pulmonologists40
• Nephrologists35
• Endocrinologists20
• Rheumatologists18
• ENT doctors40
• Oncologists111
• Psychiatrists126
• Psychologists91
• Therapists and counselors8
• Audiologists7
• Gynecologists35
• General surgeons69
• Vascular surgeons12
• Pain management doctors30
• Physiatrists8
• Allergists10
• Sleep medicine doctors15
• Neurosurgeons35
• Infectious disease doctors38

Other care in Stanford

Hospitals · Nursing homes · Dialysis centers · Home health agencies · Hospices

Nearby cities

• Palo Alto35
• Menlo Park5
• Los Altos12
• Mountain View15
• Redwood City30
• San Carlos5
• Santa Clara12
• Fremont32

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).