Quick answers
- Where does Geoffrey S. Long see patients?
- Medicare's clinician data lists 2 practice locations, including Woodbridge, VA and Washington, DC. Call before your visit to confirm the address.
- What is Geoffrey S. Long's specialty?
- Medicare lists Internal Medicine as the primary specialty.
- Does Geoffrey S. Long accept Medicare assignment?
- Yes. Medicare's clinician data says Geoffrey S. Long 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 Geoffrey S. Long?
- (703) 257-3000, as listed in official Medicare / NPI Registry data.
- What is Geoffrey S. Long's NPI number?
- 1962579037. 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 Geoffrey S. Long is enrolled with Medicare (CMS data updated 2026-10-02).
- 14139 Potomac Mills RdWoodbridge, VA 22192 (703) 257‑3000
- 700 2nd St NEWashington, DC 20002 (202) 346‑3000
Group practices
Medicare enrollment lists Geoffrey S. Long 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
- Internal Medicineprimary
Other internal medicine doctors in Woodbridge
Clinicians with the same Medicare primary specialty in Woodbridge, VA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Saint Louis University School Of Medicine |
| Graduation year | 1996 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1962579037 |
| 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