Quick answers
- Where does William A. Lash see patients?
- Medicare's clinician data lists 1 practice location in Fairfax, VA. Call before your visit to confirm the address.
- What is William A. Lash's specialty?
- Medicare lists Certified Registered Nurse Anesthetist (CRNA) as the primary specialty.
- Does William A. Lash accept Medicare assignment?
- Yes. Medicare's clinician data says William A. Lash 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 A. Lash?
- (703) 691-0670, as listed in official Medicare / NPI Registry data.
- What is William A. Lash's NPI number?
- 1194751115. 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 A. Lash is enrolled with Medicare (CMS data updated 2026-10-02).
- 10730 Main StFairfax, VA 22030 (703) 691‑0670
Group practices
Medicare enrollment lists William A. Lash as a member of this group (CMS data updated 2026-10-02).
- Ambulatory Anesthesia Services Inc16 clinicians in the group
Specialties
Find other clinicians: Certified Registered Nurse Anesthetist (CRNA), Virginia →
Other nurse anesthetists in Fairfax
Clinicians with the same Medicare primary specialty in Fairfax, VA — not a recommendation.
Clinician information
| Credential | CNA |
|---|---|
| Medical school | University Of Pittsburgh School Of Medicine |
| Graduation year | 1989 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1194751115 |
| 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