NPPES file of Aug 9, 2026

Janardan Sai Sivapalan

Internal Medicine Physician · Riverside, CA

Janardan Sai Sivapalan is an internal medicine physician with a practice address in Riverside, California, and NPI 1891430393, issued on Apr 29, 2022. Check the license (California A201730, 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
1891430393
Name
Janardan Sai Sivapalan
Primary taxonomy
Internal Medicine Physician 207R00000X
License numbers
A201730 CA
R79508 AZ
Self-reported in NPPES; status is on the state search
Practice location
10800 Magnolia Ave, Riverside, CA 92505
Phone
(951) 353-4226
Enumerated
Apr 29, 2022
Record last updated
May 28, 2025
Fax
(951) 353-4396
Medicare enrollment
Enrolled (PECOS I20251201000602); accepts Medicare assignment
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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Also registered at 10800 Magnolia Ave

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Joseph Abapo, MDPediatrics Physician1841348786
  2. Hussein Abdulrassoul, MDOrthopaedic Surgery Physician1972123891
  3. Kimberly Adams, PA-CMedical Physician Assistant1053522870
  4. Alfredo Aguiar, PAPhysician Assistant1043368970
  5. Michael Aguinaldo, M.D.Pediatrics Physician1851531487
  6. Maria Aguirre, MDPediatrics Physician1295806255

Verify Janardan Sai Sivapalan in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A201730
    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

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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90% fewer Medicare Part D claims than the average internal medicine physician in 2024

318 Medicare Part D claims for 96 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 15% of claims.

  1. Janardan Sivapalan318
  2. Specialty average3,176

Most prescribed

  1. Atorvastatin Calcium30 claims
  2. Amlodipine Besylate23 claims
  3. Losartan Potassium13 claims
  4. Levothyroxine Sodium12 claims
  5. Lisinopril12 claims
  6. Metformin Hcl12 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.

Bills Medicare through one group practice

  1. Southern California Permanente Medical GroupRiverside, CA

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

Janardan Sai Sivapalan among 17,696 internal medicine physician records in California

Janardan Sai Sivapalan 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 2022, is newer than 95% of them.

  • NPI issued2022 · 95% of these records are older, 2% newer
  • In a Medicare fileYes · 79% of these records are
  • In the CMS Doctors and Clinicians fileYes · 63% of these records are
  • Graduated2022 · median 2004 among the 11,065 with a school on file
  • Record last updated2025 · 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).

187 internal medicine physician records list a practice address in Riverside

They are 187 of the 13,893 NPPES records with a practice address in Riverside, and 17,696 internal medicine physician records in California.

The 8 internal medicine physician records with the nearest ZIP codes

  1. Susan Diethelm, MDRiverside, CA 925051023185857
  2. Kathleen Fanning, MDRiverside, CA 925051427125335
  3. Thanh Hoang, MDRiverside, CA 925051174690994
  4. Ricardo Lim, MDRiverside, CA 925051336216159
  5. Iwan Ong, MDRiverside, CA 925051265416739
  6. Humera Rana, M.D.Riverside, CA 925051801982632
  7. Terence Shum, MDRiverside, CA 925051124195946
  8. Harneet Singh, MDRiverside, CA 925051114094943

Common questions

What is Janardan Sai Sivapalan's NPI number?

Janardan Sai Sivapalan's National Provider Identifier (NPI) is 1891430393, issued on Apr 29, 2022. An NPI identifies a provider in billing; it is not a license.

Where is Janardan Sai Sivapalan located?

The NPPES record lists a practice address at 10800 Magnolia Ave, Riverside, CA, 92505. Phone: (951) 353-4226. Providers update this record themselves, so call before visiting.

How can I verify Janardan Sai Sivapalan's license?

NPPES lists California license number A201730, 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 Janardan Sai Sivapalan prescribe under Medicare Part D?

In 2024, Janardan Sai Sivapalan had 318 Medicare Part D claims for 96 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.