Quick answers
- Does Tatyana S. Polyak accept Medicare assignment?
- Yes. Medicare's clinician data says Tatyana S. Polyak 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 Tatyana S. Polyak see?
- In 2024, CMS data shows 245 Original Medicare patients and 1,925 services for Tatyana S. Polyak. This counts Original Medicare only and measures volume, not quality.
- What is Tatyana S. Polyak's NPI number?
- 1124555388. 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 Tatyana S. Polyak, 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 | 245 |
|---|---|
| Services billed to Medicare | 1,925 |
| Different services or procedures | 21 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, 20 minutes or more (99308)995 services
- Removal of muscle and/or tissue, each additional 20.0 sq cm or less (11046)263 services
- Initial nursing facility care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes (99304)152 services
- Removal of muscle and/or tissue, 20.0 sq cm or less (11043)117 services
- Removal of skin and tissue, 20.0 sq cm or less (11042)95 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%
- Diabetes58%
- Arthritis55%
- Depression53%
- Heart failure52%
Practice locations
Addresses where Tatyana S. Polyak is enrolled with Medicare (CMS data updated October 2, 2026).
- 28212 Kelly Johnson Pkwy, Suite 200Valencia, CA 91355 (213) 228‑3538
Group practices
Medicare enrollment lists Tatyana S. Polyak as a member of this group (CMS data updated October 2, 2026).
- Izuchukwu Okpara MD Inc45 clinicians in the group
Specialties
- General Surgeryprimary
Other general surgeons in Valencia
Clinicians with the same Medicare primary specialty in Valencia, CA — not a recommendation.
Other clinicians in Izuchukwu Okpara MD Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2017 (9 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1124555388 |
| 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
- 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