Quick answers
- Which hospitals does Ivan D. Hamilton work at?
- Medicare's official clinician data lists Ivan D. Hamilton at 1 hospital: Sutter Solano Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Ivan D. Hamilton see patients?
- Medicare's clinician data lists 1 practice location in Vallejo, CA. Call before your visit to confirm the address.
- What is Ivan D. Hamilton's specialty?
- Medicare lists Internal Medicine as the primary specialty.
- Does Ivan D. Hamilton accept Medicare assignment?
- Yes. Medicare's clinician data says Ivan D. Hamilton accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for Ivan D. Hamilton?
- (707) 641-1900, as listed in official Medicare / NPI Registry data.
- What is Ivan D. Hamilton's NPI number?
- 1669421202. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Ivan D. Hamilton works
Medicare's Facility Affiliation Data lists Ivan D. Hamilton at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Sutter Solano Medical CenterVallejo, CA · Acute Care Hospital · CCN 050101
Practice locations
Addresses where Ivan D. Hamilton is enrolled with Medicare (CMS data updated 2026-10-02).
- 220 Hospital DrVallejo, CA 94589 (707) 641‑1900
Group practices
Medicare enrollment lists Ivan D. Hamilton as a member of this group (CMS data updated 2026-10-02).
- La Clinica de la Raza Inc130 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Vallejo
Clinicians with the same Medicare primary specialty in Vallejo, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Georgetown University School Of Medicine |
| Graduation year | 2002 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1669421202 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians