Quick answers
- Where does John Onufer see patients?
- Medicare's clinician data lists 1 practice location in Richmond, VA. Call before your visit to confirm the address.
- What is John Onufer's specialty?
- Medicare lists Cardiac Electrophysiology as the primary specialty, and also Internal Medicine.
- Does John Onufer accept Medicare assignment?
- Yes. Medicare's clinician data says John Onufer 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 John Onufer?
- (804) 288-4827, as listed in official Medicare / NPI Registry data.
- What is John Onufer's NPI number?
- 1023084100. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where John Onufer is enrolled with Medicare (CMS data updated 2026-10-02).
- 7611 Forest Ave, Suite 100Richmond, VA 23229 (804) 288‑4827
Group practices
Medicare enrollment lists John Onufer as a member of this group (CMS data updated 2026-10-02).
- Virginia Cardiovascular Specialists56 clinicians in the group
Specialties
- Cardiac Electrophysiologyprimary
- Internal Medicinealso
Other cardiac electrophysiologists in Richmond
Clinicians with the same Medicare primary specialty in Richmond, VA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Washington University School Of Medicine |
| Graduation year | 1984 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1023084100 |
| 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
- 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