Quick answers
- Does Lakshmanan Sivasundaram accept Medicare assignment?
- Yes. Medicare's clinician data says Lakshmanan Sivasundaram accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Lakshmanan Sivasundaram see?
- In 2024, CMS data shows 445 Original Medicare patients and 5,463 services for Lakshmanan Sivasundaram. This counts Original Medicare only and measures volume, not quality.
- What is Lakshmanan Sivasundaram's NPI number?
- 1245694462. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Lakshmanan Sivasundaram, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 445 |
|---|---|
| Services billed to Medicare | 5,463 |
| Different services or procedures | 131 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Injection, triamcinolone acetonide, not otherwise specified, 10 mg (J3301)1,699 services
- Hyaluronan or derivative, durolane, for intra-articular injection, 1 mg (J7318)1,440 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)280 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)229 services
- Aspiration and/or injection of fluid from large joint (20610)228 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High cholesterol75%
- High blood pressure73%
- Arthritis70%
- Ischemic heart disease33%
- Diabetes29%
- Anxiety29%
Hospitals where Lakshmanan Sivasundaram works
Medicare's Facility Affiliation Data lists Lakshmanan Sivasundaram at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Adventist Health Simi ValleySimi Valley, CA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 050236
- Los Robles Hospital & Medical CenterThousand Oaks, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050549
Practice locations
Addresses where Lakshmanan Sivasundaram is enrolled with Medicare (CMS data updated October 2, 2026).
- 137 E Thousand Oaks BlvdThousand Oaks, CA 91360 (805) 379‑4574
- 2525 Erringer RdSimi Valley, CA 93065 (805) 527‑1404
Group practices
Medicare enrollment lists Lakshmanan Sivasundaram as a member of this group (CMS data updated October 2, 2026).
- Ventura Orthopedics Medical Group Inc72 clinicians in the group
Specialties
- Sports Medicineprimary
Other sports medicine doctors in California
Clinicians with the same Medicare primary specialty in California — not a recommendation.
Other clinicians in Ventura Orthopedics Medical Group Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Graduation year | 2016 (10 years since medical school) |
|---|---|
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1245694462 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians