Quick answers
- Which hospitals does Michael Vantiem work at?
- Medicare's official clinician data lists Michael Vantiem at 1 hospital: Riverside Regional Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Michael Vantiem see patients?
- Medicare's clinician data lists 2 practice locations, including Williamsburg, VA and Newport News, VA. Call before your visit to confirm the address.
- What is Michael Vantiem's specialty?
- Medicare lists Emergency Medicine as the primary specialty.
- Does Michael Vantiem accept Medicare assignment?
- Yes. Medicare's clinician data says Michael Vantiem 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 Michael Vantiem?
- (757) 585-2250, as listed in official Medicare / NPI Registry data.
- What is Michael Vantiem's NPI number?
- 1558755066. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Michael Vantiem works
Medicare's Facility Affiliation Data lists Michael Vantiem at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Riverside Regional Medical CenterNewport News, VA · Acute Care Hospital · CCN 490052
Practice locations
Addresses where Michael Vantiem is enrolled with Medicare (CMS data updated 2026-10-02).
- 1500 Commonwealth AveWilliamsburg, VA 23185 (757) 585‑2250
- 856 J Clyde Morris Blvd, Suite ANewport News, VA 23601 (757) 316‑5800
Group practices
Medicare enrollment lists Michael Vantiem as a member of this group (CMS data updated 2026-10-02).
- Riverside Physician Services Inc797 clinicians in the group
Specialties
- Emergency Medicineprimary
Other emergency medicine doctors in Williamsburg
Clinicians with the same Medicare primary specialty in Williamsburg, VA — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Medical school | Lake Erie College Of Osteopathic Medicine, Erie |
| Graduation year | 2015 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1558755066 |
| 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