Dr. Olga Lyass, M.D.
What this data tells you about Dr. Lyass
Dr. Olga Lyass is a nuclear medicine specialist in Lancaster, CA, with 19 years of NPI registration. Based on federal Medicare data, Dr. Lyass performed 1,719 Medicare services across 1,683 unique beneficiaries.
Between the years covered by Open Payments, Dr. Lyass received a total of $132 from 2 pharmaceutical and/or device companies across 2 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in nuclear medicine. Most payments are for meals and travel — low-value interactions common across virtually all practicing physicians. Patients may wish to discuss these relationships with their provider.
The Data Coverage level for Dr. Lyass is Very High — reflecting how much public federal data is available about this provider. Patients are encouraged to use this data as one of several factors when choosing a healthcare provider.
Medicare Practice Summary
Medicare Utilization ↗Top procedures by volume
Ranked by number of services performed for Medicare patients. Avg. submitted charge is what the provider billed; avg. Medicare payment is what CMS paid.
| Procedure | Volume | Avg. paid | Avg. submitted |
|---|---|---|---|
| Nuclear stress test of heart muscle A nuclear medicine imaging test that evaluates blood flow to the heart muscle at rest and during stress using a special camera. |
836 | $55 | $430 |
| Whole body bone and joint nuclear medicine scan A nuclear medicine imaging test that uses a radioactive tracer to create pictures of the entire skeleton and joints. This scan helps evaluate bone health and detect abnormalities throughout the body. |
170 | $31 | $320 |
| Lung ventilation and perfusion scan A nuclear medicine test that uses radioactive tracers to evaluate both air flow (ventilation) and blood flow (perfusion) in the lungs. |
138 | $37 | $268 |
| Nuclear medicine liver and bile duct scan A nuclear medicine imaging test to evaluate the liver and bile duct system. |
136 | $28 | $239 |
| Nuclear medicine parathyroid study A nuclear medicine imaging test used to evaluate the parathyroid glands. |
53 | $29 | $305 |
| SPECT nuclear medicine scan, 1 area A nuclear medicine imaging test using a single photon emission computed tomography (SPECT) scan to create detailed images of one specific area of the body. |
53 | $39 | $444 |
| Nuclear medicine stomach emptying study A nuclear medicine test used to assess how quickly the stomach empties its contents. |
48 | $31 | $339 |
| Nuclear medicine study to assess blood loss A nuclear medicine test used to evaluate and locate active bleeding within the body. |
34 | $37 | $317 |
| Whole body nuclear medicine scan A diagnostic imaging test that uses a small amount of radioactive material to create pictures of the entire body. It helps doctors evaluate the structure and function of organs and tissues throughout the body. |
34 | $29 | $287 |
| Bone scan with multiple time points A nuclear medicine imaging test that captures images of the bones at various intervals to assess bone health and detect abnormalities. |
33 | $34 | $363 |
| Nuclear medicine kidney study with drug administration A nuclear medicine test that evaluates kidney blood flow and function using a radioactive tracer and drug administration. |
32 | $41 | $425 |
| Injection of radioactive material for lymph node identification A radioactive substance is injected to help locate lymph nodes during imaging procedures. |
27 | $26 | $316 |
| Nuclear medicine liver and bile duct study with drugs A nuclear medicine imaging test to examine the liver and bile duct system using administered drugs. |
26 | $36 | $345 |
| Nuclear medicine lung circulation study A nuclear medicine test that uses a small amount of radioactive material to create images of blood flow through the lungs. |
25 | $26 | $206 |
| Nuclear stress test of heart muscle A nuclear medicine imaging test that evaluates blood flow to the heart muscle while at rest and during stress. The procedure uses special cameras to create images of the heart's function. |
22 | $53 | $362 |
| Nuclear medicine heart pumping function test A nuclear medicine study that labels red blood cells to measure the volume of blood ejected from the heart with each beat over multiple cycles. |
16 | $34 | $275 |
| Lymphatic system nuclear medicine study A nuclear medicine imaging test used to evaluate the structure and function of the lymphatic system. |
12 | $35 | $337 |
| Brain nuclear medicine study with metabolic evaluation A nuclear medicine imaging test that uses radioactive tracers to evaluate brain metabolism. This procedure helps assess how brain tissues are functioning at a metabolic level. |
12 | $1,436 | $6,541 |
| Fluorodeoxyglucose f-18 fdg, diagnostic, per study dose, up to 45 millicuries | 12 | $281 | $563 |
Industry Payment Transparency
Open Payments through 2024 ↗Payment profile
Industry payments classified by relationship type. Not all payments are equal — research and consulting reflect different relationships than speaking programs or meals.
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
Payments by company (2024)
All-time payments by company (2023-2024) ›
Associated products mentioned in payments ›
Most payments (100%) are for meals and travel — low-value interactions that are common across virtually all practicing physicians.
Geographic Context
0.0 mi
Data Sources
| Provider Registry | ✓ NPPES | Weekly updates |
| Medicare Enrollment | ✓ PECOS | Monthly updates |
| Practice Data | ✓ Medicare Util. | Annual (CY lag) |
| Industry Payments | ✓ Open Payments | CY 2024 |
| Disciplinary History | — Not public | N/A |
This provider has data in 4 of 4 available federal datasets, with a Data Coverage level of Very High. This reflects how much public data is available about a provider. How we calculate this →
Summary
Dr. Lyass is a cardiac imaging specialist, with above-average Medicare volume (top 29% in CA), with low-engagement industry engagement, with 19 years of NPI registration.
This summary is auto-generated from federal data, describing data availability and patterns. Read our methodology →
Frequently Asked Questions
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All data on this page is sourced verbatim from public federal records published by the U.S. Centers for Medicare & Medicaid Services (CMS): NPPES ↗, Open Payments ↗, Medicare Provider Utilization ↗, and PECOS. Publication is mandated by the Physician Payments Sunshine Act (§6002 ACA, 42 U.S.C. §1320a-7h) and the Freedom of Information Act.
This page is not medical advice, an endorsement, a recommendation, or a quality rating. Data Coverage reflects data completeness — how much federal information exists for this provider — not clinical performance, patient outcomes, or quality of care. Always verify information directly with the provider and consult a licensed clinician before making medical decisions.
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