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Primary care doctors who accept Medicare in Petaluma, CA
CMS lists 49 clinicians in this specialty with a practice address in Petaluma. Accept Medicare assignment (the Medicare-approved amount as full payment): 47. Offer telehealth: 5.
Typical amounts Medicare approves in ZIP 94954 (2024 Medicare rates, the latest CMS has published): a new-patient visit $142, of which you pay about $36; 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.
Nikola Lozanov, MD
✓ Accepts Medicare assignmentMIPS score (2024): 94.3/100✓ TelehealthGraduated 1996MaleDrug and device company payments (2025): $2,301James F. Leoni, MD
✓ Accepts Medicare assignmentMIPS score (2024): 75/100✓ TelehealthGraduated 1983 · Creighton University School of MedicineMaleDrug and device company payments (2025): $31Andrew B. Ashcroft, MD
✓ Accepts Medicare assignmentGraduated 2001 · Geisel School of Medicine at DartmouthMaleOther offices in Petaluma: 1Seyedeh Maryam Bashiri, MD
✓ Accepts Medicare assignmentGraduated 2010FemaleNolan K. Bayen, MD
✓ Accepts Medicare assignmentGraduated 2014 · Loma Linda University School of MedicineMaleSean O. Calandrella, MD
✓ Accepts Medicare assignmentGraduated 2004 · University of California, Irvine, California College of MedicineMaleDavid L. Capaccio, DO
✓ Accepts Medicare assignmentGraduated 1994 · College of Osteo Med of the Pacific at PomonaMaleDrug and device company payments (2025): $71Arun K. Chauhan, MD
✓ Accepts Medicare assignmentGraduated 2000MaleIun In A. Chen, DO
✓ Accepts Medicare assignmentGraduated 2012 · Rutgers New Jersey Medical SchoolFemaleOther offices in Petaluma: 1Carlin L. Chi, MD
✓ Accepts Medicare assignmentGraduated 1998 · Harvard Medical SchoolFemaleOther offices in Petaluma: 1Jonathan Y. Choe, MD
✓ Accepts Medicare assignmentGraduated 2001 · New York Medical CollegeMaleOther offices in Petaluma: 1Candice M. Dolbier, DO
✓ Accepts Medicare assignmentGraduated 2011 · Touro Un College of Osteopathic Medicine, VallejoFemaleRebecca K. Finnemore, MD
✓ Accepts Medicare assignmentGraduated 2007 · University of California, San Francisco School of MedicineFemaleOther offices in Petaluma: 1Patrick R. Flynn, MD
✓ Accepts Medicare assignmentGraduated 1993 · Georgetown University School of MedicineMaleKarl Greer
✓ Accepts Medicare assignmentGraduated 2012 · University of Texas Medical Branch at GalvestonMaleOther offices in Petaluma: 2Drug and device company payments (2025): $145Fasih A. Hameed, MD
✓ Accepts Medicare assignmentGraduated 2005 · Tulane University School of MedicineMaleOther offices in Petaluma: 1Erin J. Helgerson, MD
✓ Accepts Medicare assignmentGraduated 2010 · Indiana University School of MedicineFemaleOther offices in Petaluma: 1Alexa P. Henderson, MD
✓ Accepts Medicare assignmentGraduated 2006 · Indiana University School of MedicineFemaleRobert D. Hentz, MD
✓ Accepts Medicare assignmentGraduated 1999 · George Washington University School of MedicineMaleBrian D. Hertz, MD
✓ Accepts Medicare assignmentGraduated 1984 · University of Michigan Medical SchoolMaleOther offices in Petaluma: 1Daniel E. Kahler, DO
✓ Accepts Medicare assignmentGraduated 1989 · Michigan State University College of Osteopathic MedicineMaleAdrienne Kassis, MD
✓ Accepts Medicare assignmentGraduated 2024 · Tufts University School of MedicineFemaleOther offices in Petaluma: 1Drug and device company payments (2025): $38Parvinderjit Kaur, MD
✓ Accepts Medicare assignmentGraduated 2012FemalePatrick J. Lally, MD
✓ Accepts Medicare assignmentGraduated 2012 · University of Minnesota Medical SchoolMaleDrug and device company payments (2025): $119Yimdriuska Magan Mendoza, MD
✓ Accepts Medicare assignmentGraduated 2020 · University of California, Davis School of MedicineFemaleOther offices in Petaluma: 1Shannon Mentock, MD
✓ Accepts Medicare assignmentGraduated 2017 · Wake Forest University School of MedicineFemaleOther offices in Petaluma: 1Celina A. Mercer, MD
✓ Accepts Medicare assignmentGraduated 2020 · Tulane University School of MedicineFemaleOther offices in Petaluma: 1Aliasghar Mohyuddin, MD
✓ Accepts Medicare assignmentGraduated 1993 · Hahnemann University College of MedicineMaleTram Nguyen, MD
✓ Accepts Medicare assignmentGraduated 2012FemaleDanielle E. Oryn, MD
✓ Accepts Medicare assignmentGraduated 2002FemaleOther offices in Petaluma: 1Maria Theresa L. Paz-Lum
✓ Accepts Medicare assignmentGraduated 2002FemaleMilana Pebenito, MD
✓ Accepts Medicare assignmentGraduated 2015 · University of California, San Francisco School of MedicineFemaleOther offices in Petaluma: 1John Pendleton, MD
✓ Accepts Medicare assignmentGraduated 2002 · Warren Alpert Medical School of Brown UniversityMaleOther offices in Petaluma: 1Roxanna Pourmirzaie, MD
✓ Accepts Medicare assignmentGraduated 2018FemaleElisa V. Pujals, MD
✓ Accepts Medicare assignmentGraduated 2012FemaleOther offices in Petaluma: 1Steven N. Pyke, MD
✓ Accepts Medicare assignmentGraduated 1992 · University of Pittsburgh School of MedicineMaleRajina R. Ranadive, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 2000FemaleOther offices in Petaluma: 1Drug and device company payments (2025): $445Jessica D. Rhodes, MD
✓ Accepts Medicare assignmentGraduated 2015 · University of California, Davis School of MedicineFemaleOther offices in Petaluma: 1Drug and device company payments (2025): $37Kristina A. Rodriguez, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 2017 · University of California, Davis School of MedicineFemaleLeah B. Rorvig, MD
✓ Accepts Medicare assignmentGraduated 2014FemaleOther offices in Petaluma: 1Amrita Sandhu, DO
✓ Accepts Medicare assignmentGraduated 2008FemaleOther offices in Petaluma: 1Noel Serrano, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 1999MaleOther offices in Petaluma: 1Masato Sugiura, DO
✓ Accepts Medicare assignmentGraduated 2013MaleJiandong Wei, MD
✓ Accepts Medicare assignmentGraduated 1995FemaleDrug and device company payments (2025): $35James Wu, MD
✓ Accepts Medicare assignmentGraduated 2009 · University of Wisconsin School of MedicineMaleOther offices in Petaluma: 1Rukiye Yoltar, MD
✓ Accepts Medicare assignmentGraduated 1982FemaleAleksey Zakinov, MD
✓ Accepts Medicare assignmentGraduated 2016MaleKathleen M. Beardsworth, MD
May accept assignmentGraduated 2024 · Oregon Health Sciences University School of MedicineFemaleNina R. Molin, MD
May accept assignmentGraduated 1991 · State University of New York at Stony Brook, School of MedicineFemaleOther offices in Petaluma: 1
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 Petaluma
- Nurse practitioners46
- Cardiologists11
- Dermatologists6
- Orthopedic surgeons4
- Neurologists5
- Gastroenterologists3
- Ophthalmologists4
- Optometrists11
- Podiatrists5
- Oncologists7
- Psychiatrists7
- Psychologists15
- Therapists and counselors19
- Physical therapists9
- Chiropractors11
- Gynecologists8
- General surgeons8
- Allergists3
Other care in Petaluma
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).