Quick answers
- Does Michael Madievsky accept Medicare assignment?
- Yes. Medicare's clinician data says Michael Madievsky 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 Michael Madievsky see?
- In 2024, CMS data shows 931 Original Medicare patients and 3,721 services for Michael Madievsky. This counts Original Medicare only and measures volume, not quality.
- What is Michael Madievsky's NPI number?
- 1982696613. 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 Michael Madievsky, 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 | 931 |
|---|---|
| Services billed to Medicare | 3,721 |
| Different services or procedures | 40 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)651 services
- Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)607 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)387 services
- Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)284 services
- Biopsy of large bowel using a flexible endoscope (45380)279 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%
- Diabetes60%
- Ischemic heart disease58%
- Depression45%
Hospitals where Michael Madievsky works
Medicare's Facility Affiliation Data lists Michael Madievsky 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.
- Providence Cedars Sinai Tarzana Medical CenterTarzana, CA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 050761
Practice locations
Addresses where Michael Madievsky is enrolled with Medicare (CMS data updated October 2, 2026).
- 5525 Etiwanda Ave, Suite 110Tarzana, CA 91356 (818) 996‑4796
Group practices
Medicare enrollment lists Michael Madievsky as a member of this group (CMS data updated October 2, 2026).
- Genesis Healthcare Partners PC228 clinicians in the group
Specialties
- Gastroenterologyprimary
Other gastroenterologists in Tarzana
Clinicians with the same Medicare primary specialty in Tarzana, CA — not a recommendation.
Other clinicians in Genesis Healthcare Partners PC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1992 (34 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) | 1982696613 |
| 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