Jayalakshmi Udayasankar, MD
NPI 1689785545 · Endocrinology, Diabetes & Metabolism Physician · Mountain View, CA
Enrolled with Medicare as Practitioner - Endocrinology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Jayalakshmi Udayasankar, MD is a Endocrinology, Diabetes & Metabolism Physician provider in Mountain View, CA (NPI 1689785545).
Provider details
- NPI number
- 1689785545
- Entity type
- Individual
- Primary specialty
- Endocrinology, Diabetes & Metabolism PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- MD00044777 (WA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
862 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 259 | $153 |
| Injection of Drug Or Substance Under Skin Or Into Muscle96372 | 226 | $18 |
| 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'SG2211 | 102 | $19 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 69 | $214 |
| Fine Needle Aspiration Biopsy Using Ultrasound Guidance, First Growth10005 | 56 | $168 |
| Continuous Monitoring of Blood Sugar Level in Tissue Fluid Using Sensor Under Skin With Interpretation and Report |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 35 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Levothyroxine Sodium | 174 | 45 |
| Atorvastatin Calcium | 142 | 40 |
| Empagliflozinbrand: Jardiance | 124 | 29 |
| Metformin Hcl | 111 | 33 |
| Glimepiride | 100 | 29 |
| Semaglutidebrand: Ozempic | 87 | 23 |
| Metformin Hcl |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$50 across 1 record (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-08-31
- Last updated
- 2016-11-08
Frequently asked questions
- What is Jayalakshmi Udayasankar's NPI number?
- Jayalakshmi Udayasankar's National Provider Identifier (NPI) is 1689785545, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jayalakshmi Udayasankar's specialty?
- Jayalakshmi Udayasankar is listed in the NPPES registry with a primary specialty of Endocrinology, Diabetes & Metabolism Physician (Allopathic & Osteopathic Physicians).
- Where is Jayalakshmi Udayasankar located?
- Jayalakshmi Udayasankar's practice location on file with NPPES is 701 E. El Camino Real, Mountain View, CA 94040-2833.
- What is Jayalakshmi Udayasankar's phone number?
- The practice phone number listed in the NPPES registry for Jayalakshmi Udayasankar is (650) 934-7500.
- Does Jayalakshmi Udayasankar accept Medicare?
- Jayalakshmi Udayasankar is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Jayalakshmi Udayasankar's NPI active?
- Yes — Jayalakshmi Udayasankar's NPI (1689785545) is active in the NPPES registry as of the last update on 2016-11-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.