Quick answers
- Does Ajita Grewal accept Medicare assignment?
- Medicare's clinician data says Ajita Grewal may accept Medicare assignment (as of October 2, 2026). Ask the office whether they accept it for your visit.
- How many Medicare patients does Ajita Grewal see?
- In 2024, CMS data shows 1,545 Original Medicare patients and 6,130 services for Ajita Grewal. This counts Original Medicare only and measures volume, not quality.
- What is Ajita Grewal's NPI number?
- 1669491486. 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 Ajita Grewal, 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 | 1,545 |
|---|---|
| Services billed to Medicare | 6,130 |
| Different services or procedures | 29 |
| Participating Medicare provider | Yes |
| Average age of these patients | 79 |
Most frequent services
- Photography of the retina (92250)1,317 services
- Established patient complete exam of visual system (92014)1,299 services
- Established patient problem focused exam of visual system (92012)900 services
- Imaging of retina (92134)881 services
- Imaging of optic nerve (92133)717 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High cholesterol74%
- High blood pressure61%
- Arthritis35%
- Osteoporosis24%
- Ischemic heart disease22%
- Diabetes18%
Practice locations
Addresses where Ajita Grewal is enrolled with Medicare (CMS data updated October 2, 2026).
- 762 Altos Oaks Dr, Suite 1Los Altos, CA 94024 (650) 948‑9123
Specialties
- Ophthalmologyprimary
Other ophthalmologists in Los Altos
Clinicians with the same Medicare primary specialty in Los Altos, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Duke University School Of Medicine |
| Graduation year | 1995 (31 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | May accept for some services |
| NPI (National Provider Identifier) | 1669491486 |
| 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