Quick answers
- Which hospitals does Joel Ambrosio work at?
- Medicare's official clinician data lists Joel Ambrosio at 2 hospitals: NorthBay Medical Center and Providence Queen of the Valley Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Joel Ambrosio see patients?
- Medicare's clinician data lists 4 practice locations, including Fairfield, CA and Vacaville, CA. Call before your visit to confirm the address.
- What is Joel Ambrosio's specialty?
- Medicare lists Physician Assistant as the primary specialty.
- Does Joel Ambrosio accept Medicare assignment?
- Yes. Medicare's clinician data says Joel Ambrosio 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.
- Does Joel Ambrosio offer telehealth?
- Medicare's clinician data says Joel Ambrosio offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Joel Ambrosio?
- (707) 429-3600, as listed in official Medicare / NPI Registry data.
- What is Joel Ambrosio's NPI number?
- 1154628105. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Joel Ambrosio works
Medicare's Facility Affiliation Data lists Joel Ambrosio at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- NorthBay Medical CenterFairfield, CA · Acute Care Hospital · CCN 050367
- Providence Queen of the Valley Medical CenterNapa, CA · Acute Care Hospital · CCN 050009
Practice locations
Addresses where Joel Ambrosio is enrolled with Medicare (CMS data updated 2026-10-02).
- 1200 B Gale Wilson BlvdFairfield, CA 94533 (707) 429‑3600
- 4500 Business Ctr DrFairfield, CA 94534
- 4520 Business Ctr DrFairfield, CA 94534
- 4520 Business Ctr Dr, Suite 200Vacaville, CA 94534 (707) 646‑5500
Group practices
Medicare enrollment lists Joel Ambrosio as a member of these groups (CMS data updated 2026-10-02).
- NorthBay Physicians Surgery Center, LLC324 clinicians in the group
- NorthBay Health Medical Foundation213 clinicians in the group
Specialties
- Physician Assistantprimary
Other physician assistants in Fairfield
Clinicians with the same Medicare primary specialty in Fairfield, CA — not a recommendation.
Clinician information
| Graduation year | 2011 |
|---|---|
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1154628105 |
| 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