Quick answers
- Which hospitals does James K. Obrien work at?
- Medicare's official clinician data lists James K. Obrien at 4 hospitals: Riverside Doctors' Hospital of Williamsburg, Riverside Regional Medical Center, Riverside Walter Reed Hospital and Sentara Williamsburg Regional Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does James K. Obrien see patients?
- Medicare's clinician data lists 2 practice locations, including Newport News, VA. Call before your visit to confirm the address.
- What is James K. Obrien's specialty?
- Medicare lists Cardiovascular Disease (Cardiology) as the primary specialty.
- Does James K. Obrien accept Medicare assignment?
- Yes. Medicare's clinician data says James K. Obrien 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 James K. Obrien's NPI number?
- 1326233511. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where James K. Obrien works
Medicare's Facility Affiliation Data lists James K. Obrien at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Riverside Doctors' Hospital of WilliamsburgWilliamsburg, VA · Acute Care Hospital · CCN 490143
- Riverside Regional Medical CenterNewport News, VA · Acute Care Hospital · CCN 490052
- Riverside Walter Reed HospitalGloucester, VA · Acute Care Hospital · CCN 490130
- Sentara Williamsburg Regional Medical CenterWilliamsburg, VA · Acute Care Hospital · CCN 490066
Practice locations
Addresses where James K. Obrien is enrolled with Medicare (CMS data updated 2026-10-02).
- 856 J Clyde Morris Blvd, Suite ANewport News, VA 23601
- 856 J Clyde Morris Blvd ANewport News, VA 23601
Specialties
Find other Cardiovascular Disease (Cardiology) doctors in Virginia →
Other cardiologists in Newport News
Clinicians with the same Medicare primary specialty in Newport News, VA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Vermont College Of Medicine |
| Graduation year | 1985 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1326233511 |
| 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