Quick answers
- Does Mark W. Koukkari accept Medicare assignment?
- Yes. Medicare's clinician data says Mark W. Koukkari accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Mark W. Koukkari see?
- In 2024, CMS data shows 12 Original Medicare patients and 638 services for Mark W. Koukkari. This counts Original Medicare only and measures volume, not quality.
- What is Mark W. Koukkari's NPI number?
- 1750479929. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Mark W. Koukkari, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 12 |
|---|---|
| Services billed to Medicare | 638 |
| Different services or procedures | 7 |
| Participating Medicare provider | Yes |
| Average age of these patients | 37 |
Most frequent services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)18 services
Practice locations
Addresses where Mark W. Koukkari is enrolled with Medicare (CMS data updated October 2, 2026).
- 2350 W El Camino Real, 2nd FloorMountain View, CA 94040
- 2350 W El Camino Real, Fl 2Mountain View, CA 94040
Specialties
- Neurologyprimary
- Pediatric Medicinealso
Other neurologists in Mountain View
Clinicians with the same Medicare primary specialty in Mountain View, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Minnesota Medical School |
| Graduation year | 1990 (36 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1750479929 |
| 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 October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- 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