Quick answers
- Does Jayalakshmi Udayasankar accept Medicare assignment?
- Yes. Medicare's clinician data says Jayalakshmi Udayasankar 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 Jayalakshmi Udayasankar see?
- In 2024, CMS data shows 279 Original Medicare patients and 22,499 services for Jayalakshmi Udayasankar. This counts Original Medicare only and measures volume, not quality.
- What is Jayalakshmi Udayasankar's NPI number?
- 1689785545. 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 Jayalakshmi Udayasankar, 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 | 279 |
|---|---|
| Services billed to Medicare | 22,499 |
| Different services or procedures | 17 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Injection, romosozumab-aqqg, 1 mg (J3111)18,060 services
- Injection, denosumab, 1 mg (J0897)1,860 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)259 services
- Injection of drug or substance under skin or into muscle (96372)226 services
- Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)102 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 cholesterol75%
- High blood pressure70%
- Diabetes42%
- Arthritis36%
- Osteoporosis35%
- Chronic kidney disease29%
Practice locations
Addresses where Jayalakshmi Udayasankar is enrolled with Medicare (CMS data updated October 2, 2026).
- 15720 Winchester BlvdLos Gatos, CA 95030 (408) 934‑7000
- 370 Distel CirLos Altos, CA 94022 (650) 254‑5200
- 701 E El Camino RealMountain View, CA 94040 (650) 691‑6174
Group practices
Medicare enrollment lists Jayalakshmi Udayasankar as a member of this group (CMS data updated October 2, 2026).
- Sutter Bay Medical Foundation3,829 clinicians in the group
Specialties
- Endocrinologyprimary
Other endocrinologists in Los Gatos
Clinicians with the same Medicare primary specialty in Los Gatos, CA — not a recommendation.
Other clinicians in Sutter Bay Medical Foundation
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1995 (31 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1689785545 |
| 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