Quick answers
- Which hospitals does Erin A. Berntsen work at?
- Medicare's official clinician data lists Erin A. Berntsen at 2 hospitals: Alta Bates Summit Medical Center - Alta Bates Camp… and NorthBay Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Erin A. Berntsen see patients?
- Medicare's clinician data lists 3 practice locations, including Vacaville, CA, Fairfield, CA and Oakland, CA. Call before your visit to confirm the address.
- What is Erin A. Berntsen's specialty?
- Medicare lists Nurse Practitioner as the primary specialty.
- Does Erin A. Berntsen accept Medicare assignment?
- Yes. Medicare's clinician data says Erin A. Berntsen 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 Erin A. Berntsen?
- (707) 624-7000, as listed in official Medicare / NPI Registry data.
- What is Erin A. Berntsen's NPI number?
- 1205640489. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Erin A. Berntsen works
Medicare's Facility Affiliation Data lists Erin A. Berntsen at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Alta Bates Summit Medical Center - Alta Bates Camp…Berkeley, CA · Acute Care Hospital · CCN 050305
- NorthBay Medical CenterFairfield, CA · Acute Care Hospital · CCN 050367
Practice locations
Addresses where Erin A. Berntsen is enrolled with Medicare (CMS data updated 2026-10-02).
- 1000 Nut Tree RdVacaville, CA 95687 (707) 624‑7000
- 1200 B Gale Wilson BlvdFairfield, CA 94533 (707) 429‑3600
- 350 Hawthorne AveOakland, CA 94609 (510) 655‑4000
Group practices
Medicare enrollment lists Erin A. Berntsen as a member of these groups (CMS data updated 2026-10-02).
- Inpatient Specialists of California PC385 clinicians in the group
- NorthBay Physicians Surgery Center, LLC324 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Vacaville
Clinicians with the same Medicare primary specialty in Vacaville, CA — not a recommendation.
Clinician information
| Credential | NP |
|---|---|
| Medical school | University Of South Alabama College Of Medicine |
| Graduation year | 2024 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1205640489 |
| 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