Lekshmi Vallyathan, MD
Internal Medicine Physician · Merced, CA
Lekshmi Vallyathan, MD is an internal medicine physician with a practice address in Merced, California, and NPI 1487842894, issued on Oct 10, 2007. Check the license (California A118521, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Lekshmi Vallyathan
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- A118521 CA
MT191774 PA
Self-reported in NPPES; status is on the state search - Practice location
- 315 Mercy Ave, Merced, CA 95340
- Phone
- (209) 564-3713
- Enumerated
- Oct 10, 2007
- Record last updated
- Feb 11, 2022
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 315 Mercy Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Lekshmi Vallyathan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A118521Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2% fewer Medicare Part D claims than the average internal medicine physician in 2024
3,104 Medicare Part D claims for 386 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 7% of claims. 121 claims were for opioids.
Most prescribed
- Atorvastatin Calcium262 claims
- Losartan Potassium183 claims
- Lisinopril120 claims
- Levothyroxine Sodium116 claims
- Amlodipine Besylate102 claims
- Tizanidine Hcl76 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: $27.11
1 payment: food and beverage; the largest payer was Dexcom, Inc. The 50,334 providers of this specialty with any payment received $1,303.06 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.
Lekshmi Vallyathan among 17,696 internal medicine physician records in California
Lekshmi Vallyathan, MD is one of 17,696 internal medicine physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 44% of them.
- NPI issued2007 · 44% of these records are older, 44% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileNo · 63% of these records are
- Record last updated2022 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Internal Medicine Physician providers in California
There are 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Merced → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Mark Altchek, M.D.Merced, CA 953401154503670
- Michelle Barbosa, D.O.Merced, CA 953401306182464
- Maristela Carreon, M.D.Merced, CA 953401376693952
- Teresita Enad, M.D.Merced, CA 953401639103898
- Leland Fife, MDMerced, CA 953401285745521
- Jaideep Misra, MDMerced, CA 953401861965386
- James Reid, M.D.Merced, CA 953401083607022
- Jelili Apalara, MD, MPH, FACP, CPHQ.Merced, CA 953411609067719
Common questions
What is Lekshmi Vallyathan, MD's NPI number?
Lekshmi Vallyathan, MD's National Provider Identifier (NPI) is 1487842894, issued on Oct 10, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Lekshmi Vallyathan, MD located?
The NPPES record lists a practice address at 315 Mercy Ave, Merced, CA, 95340. Phone: (209) 564-3713. Providers update this record themselves, so call before visiting.
How can I verify Lekshmi Vallyathan, MD's license?
NPPES lists California license number A118521, 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 Lekshmi Vallyathan, MD prescribe under Medicare Part D?
In 2024, Lekshmi Vallyathan, MD had 3,104 Medicare Part D claims for 386 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.