Quick answers
- Where does William Stallard see patients?
- Medicare's clinician data lists 3 practice locations, including Ashburn, VA, Nottingham, MD and Springfield, VA. Call before your visit to confirm the address.
- What is William Stallard's specialty?
- Medicare lists Family Practice as the primary specialty.
- Does William Stallard accept Medicare assignment?
- Yes. Medicare's clinician data says William Stallard 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 William Stallard?
- (571) 252-6000, as listed in official Medicare / NPI Registry data.
- What is William Stallard's NPI number?
- 1740694561. 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 William Stallard is enrolled with Medicare (CMS data updated 2026-10-02).
- 43480 Yukon Dr, Suite 100Ashburn, VA 20147 (571) 252‑6000
- 4920 Campbell BlvdNottingham, MD 21236 (410) 933‑7600
- 6551 Loisdale CtSpringfield, VA 22150 (703) 922‑1000
Group practices
Medicare enrollment lists William Stallard as a member of this group (CMS data updated 2026-10-02).
- Kaiser Foundation Health Plan of the Mid Atlantic States, Inc1,899 clinicians in the group
Specialties
- Family Practiceprimary
Other family doctors in Ashburn
Clinicians with the same Medicare primary specialty in Ashburn, VA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Virginia Commonwealth University, School Of Medicine |
| Graduation year | 2014 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1740694561 |
| 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