NPPES file of Aug 9, 2026

Kanagaratnam Sivalingam, M.D.

Geriatric Medicine (Internal Medicine) Physician · Lancaster, CA

Kanagaratnam Sivalingam, M.D. is a geriatric medicine (internal medicine) physician with a practice address in Lancaster, California, and NPI 1578578365, issued on Jul 30, 2006. Check the license (California A30091, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1578578365
Name
Kanagaratnam Sivalingam
Credential
M.D.
Primary taxonomy
Geriatric Medicine (Internal Medicine) Physician 207RG0300X
License number
A30091 CA
Self-reported in NPPES; status is on the state search
Practice location
44725 N. 10TH St. West, Lancaster, CA 93534
Phone
(661) 726-3724
Enumerated
Jul 30, 2006
Record last updated
Dec 18, 2014 (not updated in 12 years: call before relying on the address or phone)
Fax
(661) 726-3063
Medicare enrollment
Enrolled (PECOS I20101130000788); accepts Medicare assignment
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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8 nearest geriatric medicine (internal medicine) physician records → All 532 in California → Look up another NPI →

Verify Kanagaratnam Sivalingam in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A30091    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the California license search

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20% fewer Medicare Part D claims than the average geriatric medicine (internal medicine) physician in 2024

3,400 Medicare Part D claims for 370 beneficiaries, against an average of 4,246 among the 3,116 providers of this specialty who prescribed in Part D. Brand-name drugs were 16% of claims. 307 claims were for opioids.

  1. Kanagaratnam Sivalingam3,400
  2. Specialty average4,246

Most prescribed

  1. Atorvastatin Calcium171 claims
  2. Rosuvastatin Calcium115 claims
  3. Albuterol Sulfate Hfa106 claims
  4. Amlodipine Besylate102 claims
  5. Levothyroxine Sodium94 claims
  6. Hydrocodone-Acetaminophen91 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: $562.00

26 payments; by number, the most common kind was food and beverage; the largest payer was Boehringer Ingelheim Pharmaceuticals, Inc. The 1,004 providers of this specialty with any payment received $1,720.82 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Kanagaratnam Sivalingam$562.00
  2. Specialty average$1,720.82

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

  1. Sivalingam Medical Corporation, Inc.Lancaster, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Kanagaratnam Sivalingam among 532 geriatric medicine (internal medicine) physician records in California

Kanagaratnam Sivalingam, M.D. is one of 532 geriatric medicine (internal medicine) physician records with a practice address in California. 77% 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 7% of them.

  • NPI issued2006 · 7% of these records are older, 46% newer
  • In a Medicare fileYes · 77% of these records are
  • In the CMS Doctors and Clinicians fileYes · 51% of these records are
  • Graduated1967 · median 1999 among the 271 with a school on file
  • Record last updated2014 · 62% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0300X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Geriatric Medicine (Internal Medicine) Physician providers in California

There are 532 geriatric medicine (internal medicine) physician records in California.

All 532 in California → Every provider in Lancaster → Geriatric Medicine (Internal Medicine) Physician nationwide →

The 8 geriatric medicine (internal medicine) physician records with the nearest ZIP codes

  1. Kyriacos Charalambides, M.D.Lancaster, CA 935341255589420
  2. Sara Dhamija, M.D.Lancaster, CA 935341275643405
  3. Vincent Ho, M.D.Lancaster, CA 935341124138359
  4. Gilbert Bourjeily, M.D.Tehachapi, CA 935611285882373
  5. Michael Kazak, MDSanta Maria, CA 934581285732636
  6. Glenn Kissinger, MDDinuba, CA 936181013123892
  7. Wallace Schwam, M.D.Pismo Beach, CA 934491902144694
  8. Christine Barber, M.D.San Luis Obispo, CA 934091407047475

Common questions

What is Kanagaratnam Sivalingam, M.D.'s NPI number?

Kanagaratnam Sivalingam, M.D.'s National Provider Identifier (NPI) is 1578578365, issued on Jul 30, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Kanagaratnam Sivalingam, M.D. located?

The NPPES record lists a practice address at 44725 N. 10TH St. West, Lancaster, CA, 93534. Phone: (661) 726-3724. Providers update this record themselves, so call before visiting.

How can I verify Kanagaratnam Sivalingam, M.D.'s license?

NPPES lists California license number A30091, 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 Kanagaratnam Sivalingam, M.D. prescribe under Medicare Part D?

In 2024, Kanagaratnam Sivalingam, M.D. had 3,400 Medicare Part D claims for 370 beneficiaries; the average among geriatric medicine (internal medicine) physician prescribers was 4,246. 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.