Jayalakshmi Udayasankar, MD
Endocrinology, Diabetes & Metabolism Physician · Mountain View, CA
Jayalakshmi Udayasankar, MD is an endocrinology, diabetes & metabolism physician with a practice address in Mountain View, California, and NPI 1689785545, issued on Aug 31, 2006. Check the license (California C142851, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Jayalakshmi Udayasankar
- Credential
- MD
- Primary taxonomy
- Endocrinology, Diabetes & Metabolism Physician 207RE0101X
- License numbers
- C142851 CA
MD00044777 WA
Self-reported in NPPES; status is on the state search - Practice location
- 701 E. EL Camino Real, Mountain View, CA 94040
- Phone
- (650) 934-7500
- Enumerated
- Aug 31, 2006
- Record last updated
- Nov 8, 2016 (not updated in 10 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20161109001571); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest endocrinology, diabetes & metabolism physician records → All 1,131 in California → Look up another NPI →
Also registered at 701 E. EL Camino Real
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Jayalakshmi Udayasankar in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license C142851Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
22% fewer Medicare Part D claims than the average endocrinology, diabetes & metabolism physician in 2024
2,039 Medicare Part D claims for 237 beneficiaries, against an average of 2,630 among the 8,223 providers of this specialty who prescribed in Part D. Brand-name drugs were 42% of claims.
Most prescribed
- Levothyroxine Sodium174 claims
- Atorvastatin Calcium142 claims
- Jardiance124 claims
- Metformin Hcl111 claims
- Glimepiride100 claims
- Metformin Hcl Er87 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $49.54
1 payment: food and beverage; the largest payer was Radius Health, Inc. The 5,661 providers of this specialty with any payment received $5,742.15 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Sutter Bay Medical FoundationLos Gatos, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Jayalakshmi Udayasankar among 1,131 endocrinology, diabetes & metabolism physician records in California
Jayalakshmi Udayasankar, MD is one of 1,131 endocrinology, diabetes & metabolism physician records with a practice address in California. 84% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 5% of them.
- NPI issued2006 · 5% of these records are older, 54% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileYes · 69% of these records are
- Graduated1995 · median 2003 among the 779 with a school on file
- Record last updated2016 · 57% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RE0101X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Endocrinology, Diabetes & Metabolism Physician providers in California
There are 1,131 endocrinology, diabetes & metabolism physician records in California.
All 1,131 in California → Every provider in Mountain View → Endocrinology, Diabetes & Metabolism Physician nationwide →
The 8 endocrinology, diabetes & metabolism physician records with the nearest ZIP codes
- Sidra Azim, M.D.Mountain View, CA 940401043598378
- Eva Balint, M.D.Mountain View, CA 940401669578951
- Lynn Bennion, M.D.Mountain View, CA 940401235181728
- Leonard Doberne, M.D.Mountain View, CA 940401558447847
- Soo Eng, MDMountain View, CA 940401316024920
- Michael Greenfield, M.D.Mountain View, CA 940401295873685
- Todd Kaye, MDMountain View, CA 940401295787646
- Katayoun Lotfi, MDMountain View, CA 940401619288685
Common questions
What is Jayalakshmi Udayasankar, MD's NPI number?
Jayalakshmi Udayasankar, MD's National Provider Identifier (NPI) is 1689785545, issued on Aug 31, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Jayalakshmi Udayasankar, MD located?
The NPPES record lists a practice address at 701 E. EL Camino Real, Mountain View, CA, 94040. Phone: (650) 934-7500. Providers update this record themselves, so call before visiting.
How can I verify Jayalakshmi Udayasankar, MD's license?
NPPES lists California license number C142851, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Jayalakshmi Udayasankar, MD prescribe under Medicare Part D?
In 2024, Jayalakshmi Udayasankar, MD had 2,039 Medicare Part D claims for 237 beneficiaries; the average among endocrinology, diabetes & metabolism physician prescribers was 2,630. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.