Quick answers
- Does Mark M. Lensky accept Medicare assignment?
- Yes. Medicare's clinician data says Mark M. Lensky 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 Mark M. Lensky see?
- In 2024, CMS data shows 1,992 Original Medicare patients and 9,355 services for Mark M. Lensky. This counts Original Medicare only and measures volume, not quality.
- What is Mark M. Lensky's NPI number?
- 1558582866. 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 Mark M. Lensky, 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 | 1,992 |
|---|---|
| Services billed to Medicare | 9,355 |
| Different services or procedures | 49 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)2,992 services
- Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)1,605 services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)1,596 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)657 services
- Ultrasound of heart with color-depicted blood flow, rate, direction and valve function (93306)601 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 blood pressure75%
- High cholesterol75%
- Arthritis75%
- Ischemic heart disease70%
- Depression70%
- Diabetes67%
Hospitals where Mark M. Lensky works
Medicare's Facility Affiliation Data lists Mark M. Lensky 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.
- Cedars-Sinai Medical CenterLos Angeles, CA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 050625
- Hollywood Presbyterian Medical CenterLos Angeles, CA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 050063
- Kaiser Foundation Hospital - Los AngelesLos Angeles, CA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: not listed by Medicare · CCN 050138
- Southern California Hospital at HollywoodHollywood, CA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 050135
- Valley Presbyterian HospitalVan Nuys, CA · Acute Care Hospital · Medicare rating: 1 of 5 stars · Emergency services: listed by Medicare · CCN 050126
Practice locations
Addresses where Mark M. Lensky is enrolled with Medicare (CMS data updated October 2, 2026).
- 14411 Hamlin StVan Nuys, CA 91401 (818) 994‑0616
- 7500 Hellman AveRosemead, CA 91770 (626) 288‑1160
Group practices
Medicare enrollment lists Mark M. Lensky as a member of this group (CMS data updated October 2, 2026).
- Ramesh Arora Medical Corp3 clinicians in the group
Specialties
- Cardiac Electrophysiologyprimary
- Internal Medicinealso
Find other Cardiac Electrophysiology doctors in California →
Other cardiac electrophysiologists in California
Clinicians with the same Medicare primary specialty in California — not a recommendation.
Other clinicians in Ramesh Arora Medical Corp
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of California, Irvine, California College Of Medicine |
| Graduation year | 2002 (24 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1558582866 |
| 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