Quick answers
- Where does David Johnston see patients?
- Medicare's clinician data lists 4 practice locations, including Schenectady, NY, Amsterdam, NY and Liverpool, NY. Call before your visit to confirm the address.
- What is David Johnston's specialty?
- Medicare lists Physician Assistant as the primary specialty.
- Does David Johnston accept Medicare assignment?
- Yes. Medicare's clinician data says David Johnston 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 David Johnston?
- (518) 344-4778, as listed in official Medicare / NPI Registry data.
- What is David Johnston's NPI number?
- 1417116401. 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 David Johnston is enrolled with Medicare (CMS data updated 2026-10-02).
- 1708 Altamount AveSchenectady, NY 12303 (518) 344‑4778
- 445 Balltown Rd, Suite 1Schenectady, NY 12304 (518) 387‑3566
- 4942 State Hwy 30, Suite 100Amsterdam, NY 12010 (518) 627‑6336
- 7375 Oswego Rd, Suite 1Liverpool, NY 13090 (315) 291‑0064
Group practices
Medicare enrollment lists David Johnston as a member of this group (CMS data updated 2026-10-02).
- Wellnow Urgent Care, P.C.392 clinicians in the group
Specialties
- Physician Assistantprimary
Other physician assistants in Schenectady
Clinicians with the same Medicare primary specialty in Schenectady, NY — not a recommendation.
Clinician information
| Credential | PA |
|---|---|
| Graduation year | 2008 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1417116401 |
| 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