Internal Medicine - Gastroenterology Specialists in Vallejo, CA
Browse 9 Internal Medicine - Gastroenterology providers listed in NPPES with a practice address in Vallejo, California.
How Vallejo compares with the U.S.
9 active clinicians in Internal Medicine - Gastroenterology list a practice address in Vallejo, CA in the NPI registry.
With fewer than 10 clinicians, rates per 100,000 residents are not reliable enough to compare.
Too few clinicians in Internal Medicine - Gastroenterology in Vallejo are listed in the CMS Medicare file to report Medicare assignment or telehealth shares.
These figures summarize public federal data. They do not measure quality of care, appointment availability, or whether a clinician accepts your insurance or new patients. Registry addresses can be out of date. Please confirm details directly with the office and your plan. This information is not medical advice.
Prepared by T-MedInfo from NPPES, CMS and U.S. Census Bureau data. Questions or corrections: support@t-medinfo.com · Methodology
Sources: Clinician counts and practice addresses: NPPES NPI Registry, Centers for Medicare & Medicaid Services (CMS), data as of November 2026.
Dr. Marcus Juan Labio Esteban , MD
Internal Medicine - Gastroenterology
Dr. Aaron M. Levy , MD
Internal Medicine - Gastroenterology
Dr. Ralston R. Martin , MD
Internal Medicine - Gastroenterology
Dr. Pauline A. Mysliwiec , MD
Internal Medicine - Gastroenterology
Dr. Ryan Nock , MD
Internal Medicine - Gastroenterology
Dr. Arun G. Suryaprasad , MD
Internal Medicine - Gastroenterology
Dr. Jeffrey T. Wei , MD
Internal Medicine - Gastroenterology
Dr. Thomas M. Cuff , MD
Internal Medicine - Gastroenterology
Dr. Laurence J Mazzotta , MD
Internal Medicine - Gastroenterology
Frequently Asked Questions about Internal Medicine - Gastroenterology in Vallejo
Each practitioner profile shows the NUCC taxonomy code and any state license number the practitioner reported to NPPES, plus a link to the California licensing board lookup. NPPES entries are self-reported; current license status is published only by the state board.
This list shows NPI records that are active in NPPES. A deactivated NPI keeps its profile with the deactivation date and practice history; find it with the site search by name or NPI number.
Other Specialties in Vallejo
- Physician Assistant 245
- Pharmacist 169
- Physical Therapist 129
- Student in an Organized Health Care Education/Training Program 94
- Dentist - General Practice 61
- Dentist 42
- Nurse Practitioner - Family 39
- Nurse Anesthetist, Certified Registered 33
- Optometrist 28
- Nurse Practitioner 18
- Podiatrist - Foot & Ankle Surgery 16
- Physician Assistant - Medical 13
Internal Medicine - Gastroenterology Specialists in Other California Cities
Cities with the most listed practitioners first.