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Dr. Olga Lyass, MD

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Specializes in: Nuclear Medicine and Diagnostic Radiology

1600 W Avenue J
Lancaster, CA 93534

(424) 290-8004

Dr. Olga Lyass, MD is a nuclear medicine specialist in Lancaster, CA specializing in nuclear medicine and diagnostic radiology. Dr. Olga Lyass, MD is affiliated with Valley Presbyterian Hospital .

Office Locations

1600 W Avenue J
Lancaster, CA 93534

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2330 Utah Avenue Suite #200
Simi Valley, CA 90245

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Noteworthy Medicare Patient Procedures Performed by Dr. Olga Lyass, MD in 2024

Click on any procedure below to see further details on volume and pricing among Medicare patients.

Top 5%

By Volume:

gastric emptying study

myocardial perfusion SPECT

nuclear scan

In 2024, Dr. Olga Lyass, MD performed more gastric emptying study, myocardial perfusion SPECT, and nuclear scan procedures for Medicare patients than 95% of providers in related specialties within California.

Top 10%

By Volume:

bone scan

joint scan

In 2024, Dr. Olga Lyass, MD performed more bone scan, and joint scan procedures for Medicare patients than 90% of providers in related specialties within California.

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. Olga Lyass, MD treated as a nuclear medicine specialist in Lancaster, CA during 2012 were nuclear scan, stress testing, cardiac procedures and musculoskeletal imaging.

Volume of procedures performed by Dr. Olga Lyass, MD for Medicare patients.

abdominal imaging	22
cardiac procedures	801
diagnostic imaging	22
endocrine imaging	29
gastrointestinal procedures	22
musculoskeletal imaging	287
nuclear scan	1139
stress testing	801
thyroid function tests	29

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Olga Lyass, MD treated as a nuclear medicine specialist in Lancaster, CA during 2013 were nuclear scan, stress testing, cardiac procedures and musculoskeletal imaging.

Volume of procedures performed by Dr. Olga Lyass, MD for Medicare patients.

abdominal imaging	24
cardiac procedures	741
diagnostic imaging	24
endocrine imaging	24
gastrointestinal procedures	24
musculoskeletal imaging	308
nuclear scan	1097
stress testing	741
thoracic (chest) imaging	13
thyroid function tests	24
X-rays	13

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Olga Lyass, MD.

**Gender**
Male	808
Female	1056

**Ethnicity**
Non-Hispanic White	928
Black	211
Hispanic	428
Asian	258
Other	0
Native American	0

**Age**
From 65 to 74	657
From 75 to 84	607
85 and over	291
Less than 65	309

Conditions of Medicare patients treated by Dr. Olga Lyass, MD in 2013

Hypertension	75
High Cholesterol	70
Stroke	10
Ischemic Heart Disease	69
Depression	32
Chronic Kidney Disease	47
Asthma	14
Osteoperosis	16
Atrial Fibrilation	17
Heart Failure	46
Chronic Obstructive Pulmonary Disease	32
Diabetes	59
Dementia	24
Cancer	25

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Olga Lyass, MD treated as a nuclear medicine specialist in Lancaster, CA during 2014 were nuclear scan, stress testing, cardiac procedures and musculoskeletal imaging.

Volume of procedures performed by Dr. Olga Lyass, MD for Medicare patients.

abdominal imaging	26
cardiac procedures	1152
diagnostic imaging	26
endocrine imaging	28
gastrointestinal procedures	26
musculoskeletal imaging	401
nuclear scan	1607
stress testing	1152
thoracic (chest) imaging	18
thyroid function tests	28
X-rays	18

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Olga Lyass, MD.

**Gender**
Male	1063
Female	1351

**Ethnicity**
Non-Hispanic White	1130
Black	314
Hispanic	589
Asian	322
Other	0
Native American	0

**Age**
From 65 to 74	853
From 75 to 84	782
85 and over	388
Less than 65	391

Conditions of Medicare patients treated by Dr. Olga Lyass, MD in 2014

Hypertension	75
High Cholesterol	70
Stroke	11
Ischemic Heart Disease	72
Depression	33
Chronic Kidney Disease	49
Asthma	15
Osteoperosis	16
Atrial Fibrilation	17
Heart Failure	48
Chronic Obstructive Pulmonary Disease	33
Diabetes	58
Dementia	22
Cancer	22

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Olga Lyass, MD treated as a nuclear medicine specialist in Lancaster, CA during 2015 were nuclear scan, stress testing, cardiac procedures and musculoskeletal imaging.

Volume of procedures performed by Dr. Olga Lyass, MD for Medicare patients.

abdominal imaging	47
cardiac procedures	1400
diagnostic imaging	47
endocrine imaging	30
gastrointestinal procedures	47
lymph node procedures	20
musculoskeletal imaging	625
nuclear scan	2122
stress testing	1400
thyroid function tests	30

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Olga Lyass, MD.

**Gender**
Male	2910
Female	3524

**Ethnicity**
Non-Hispanic White	3318
Black	766
Hispanic	1404
Asian	716
Other	0
Native American	0

**Age**
From 65 to 74	2244
From 75 to 84	2114
85 and over	1106
Less than 65	970

Conditions of Medicare patients treated by Dr. Olga Lyass, MD in 2015

Hypertension	75
High Cholesterol	70
Stroke	12
Ischemic Heart Disease	67
Depression	34
Chronic Kidney Disease	52
Asthma	23
Osteoperosis	17
Atrial Fibrilation	17
Heart Failure	46
Chronic Obstructive Pulmonary Disease	31
Diabetes	55
Dementia	23
Cancer	24

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Olga Lyass, MD treated as a nuclear medicine specialist in Lancaster, CA during 2016 were nuclear scan, stress testing, cardiac procedures and musculoskeletal imaging.

Volume of procedures performed by Dr. Olga Lyass, MD for Medicare patients.

abdominal imaging	65
cardiac procedures	1455
diagnostic imaging	65
endocrine imaging	43
gastrointestinal procedures	65
lymph node procedures	25
musculoskeletal imaging	637
nuclear scan	2225
stress testing	1455
thyroid function tests	43

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Olga Lyass, MD.

**Gender**
Male	1478
Female	1785

**Ethnicity**
Non-Hispanic White	1752
Black	381
Hispanic	671
Asian	363
Other	0
Native American	0

**Age**
From 65 to 74	1196
From 75 to 84	1049
85 and over	531
Less than 65	487

Conditions of Medicare patients treated by Dr. Olga Lyass, MD in 2016

Hypertension	75
High Cholesterol	72
Stroke	11
Ischemic Heart Disease	70
Depression	34
Chronic Kidney Disease	58
Asthma	35
Osteoperosis	14
Atrial Fibrilation	18
Heart Failure	48
Chronic Obstructive Pulmonary Disease	32
Diabetes	56
Dementia	25
Cancer	23

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Olga Lyass, MD treated as a nuclear medicine specialist in Lancaster, CA during 2017 were nuclear scan, stress testing, cardiac procedures and musculoskeletal imaging.

Volume of procedures performed by Dr. Olga Lyass, MD for Medicare patients.

abdominal imaging	55
cardiac procedures	1199
diagnostic imaging	55
endocrine imaging	23
gastrointestinal procedures	55
lymph node procedures	13
musculoskeletal imaging	617
nuclear scan	1907
stress testing	1199
thyroid function tests	23

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Olga Lyass, MD.

**Gender**
Male	1407
Female	1538

**Ethnicity**
Non-Hispanic White	1562
Black	340
Hispanic	594
Asian	343
Other	0
Native American	0

**Age**
From 65 to 74	1042
From 75 to 84	982
85 and over	474
Less than 65	447

Conditions of Medicare patients treated by Dr. Olga Lyass, MD in 2017

Hypertension	75
High Cholesterol	69
Stroke	11
Ischemic Heart Disease	68
Depression	34
Chronic Kidney Disease	61
Asthma	12
Osteoperosis	15
Atrial Fibrilation	18
Heart Failure	50
Chronic Obstructive Pulmonary Disease	33
Diabetes	56
Dementia	25
Cancer	24

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Olga Lyass, MD treated as a nuclear medicine specialist in Lancaster, CA during 2018 were nuclear scan, stress testing, cardiac procedures and musculoskeletal imaging.

Volume of procedures performed by Dr. Olga Lyass, MD for Medicare patients.

abdominal imaging	69
cardiac procedures	1180
diagnostic imaging	69
endocrine imaging	37
gastrointestinal procedures	69
lymph node procedures	17
musculoskeletal imaging	499
nuclear scan	1802
stress testing	1180
thyroid function tests	37

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Olga Lyass, MD.

**Gender**
Male	1235
Female	1363

**Ethnicity**
Non-Hispanic White	1277
Black	322
Hispanic	597
Asian	288
Other	0
Native American	0

**Age**
From 65 to 74	969
From 75 to 84	872
85 and over	377
Less than 65	380

Conditions of Medicare patients treated by Dr. Olga Lyass, MD in 2018

Hypertension	75
High Cholesterol	74
Stroke	12
Ischemic Heart Disease	71
Depression	37
Chronic Kidney Disease	62
Asthma	12
Osteoperosis	15
Atrial Fibrilation	18
Heart Failure	51
Chronic Obstructive Pulmonary Disease	32
Diabetes	58
Dementia	27
Cancer	23

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Olga Lyass, MD treated as a nuclear medicine specialist in Lancaster, CA during 2019 were nuclear scan, stress testing, cardiac procedures and musculoskeletal imaging.

Volume of procedures performed by Dr. Olga Lyass, MD for Medicare patients.

abdominal imaging	64
cardiac procedures	1496
diagnostic imaging	64
endocrine imaging	38
gastrointestinal procedures	64
lymph node procedures	23
musculoskeletal imaging	472
nuclear scan	2093
stress testing	1496
thyroid function tests	38

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Olga Lyass, MD.

**Gender**
Male	1325
Female	1431

**Ethnicity**
Non-Hispanic White	1263
Black	373
Hispanic	661
Asian	344
Other	0
Native American	0

**Age**
From 65 to 74	1038
From 75 to 84	883
85 and over	431
Less than 65	404

Conditions of Medicare patients treated by Dr. Olga Lyass, MD in 2019

Hypertension	75
High Cholesterol	75
Stroke	12
Ischemic Heart Disease	74
Depression	38
Chronic Kidney Disease	63
Asthma	14
Osteoperosis	15
Atrial Fibrilation	19
Heart Failure	54
Chronic Obstructive Pulmonary Disease	34
Diabetes	60
Dementia	30
Cancer	20

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Olga Lyass, MD treated as a nuclear medicine specialist in Lancaster, CA during 2020 were nuclear scan, stress testing, cardiac procedures and musculoskeletal imaging.

Volume of procedures performed by Dr. Olga Lyass, MD for Medicare patients.

abdominal imaging	52
cardiac procedures	974
diagnostic imaging	52
endocrine imaging	18
gastrointestinal procedures	52
lymph node procedures	19
musculoskeletal imaging	395
nuclear scan	1458
stress testing	974
thyroid function tests	18

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Olga Lyass, MD.

**Gender**
Male	1048
Female	1089

**Ethnicity**
Non-Hispanic White	924
Black	292
Hispanic	524
Asian	286
Other	0
Native American	0

**Age**
From 65 to 74	826
From 75 to 84	680
85 and over	320
Less than 65	311

Conditions of Medicare patients treated by Dr. Olga Lyass, MD in 2020

Hypertension	75
High Cholesterol	75
Stroke	13
Ischemic Heart Disease	73
Depression	39
Chronic Kidney Disease	65
Asthma	13
Osteoperosis	14
Atrial Fibrilation	20
Heart Failure	54
Chronic Obstructive Pulmonary Disease	30
Diabetes	60
Dementia	31
Cancer	22

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Olga Lyass, MD treated as a nuclear medicine specialist in Lancaster, CA during 2021 were nuclear scan, stress testing, cardiac procedures and musculoskeletal imaging.

Volume of procedures performed by Dr. Olga Lyass, MD for Medicare patients.

abdominal imaging	59
cardiac procedures	940
diagnostic imaging	59
endocrine imaging	21
gastrointestinal procedures	59
musculoskeletal imaging	397
nuclear scan	1417
stress testing	940
thyroid function tests	21

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Olga Lyass, MD.

**Gender**
Male	1016
Female	1033

**Ethnicity**
Non-Hispanic White	987
Black	240
Hispanic	447
Asian	262
Other	0
Native American	0

**Age**
From 65 to 74	805
From 75 to 84	663
85 and over	297
Less than 65	284

Conditions of Medicare patients treated by Dr. Olga Lyass, MD in 2021

Hypertension	75
High Cholesterol	75
Stroke	12
Ischemic Heart Disease	72
Depression	38
Chronic Kidney Disease	66
Asthma	13
Osteoperosis	16
Atrial Fibrilation	19
Heart Failure	53
Chronic Obstructive Pulmonary Disease	29
Diabetes	60
Dementia	27
Cancer	22

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Olga Lyass, MD treated as a nuclear medicine specialist in Lancaster, CA during 2022 were nuclear scan, stress testing, cardiac procedures and musculoskeletal imaging.

Volume of procedures performed by Dr. Olga Lyass, MD for Medicare patients.

abdominal imaging	52
cardiac procedures	778
diagnostic imaging	52
gastrointestinal procedures	52
lymph node procedures	19
musculoskeletal imaging	252
nuclear scan	1101
stress testing	778

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Olga Lyass, MD.

**Gender**
Male	819
Female	924

**Ethnicity**
Non-Hispanic White	885
Black	170
Hispanic	351
Asian	223
Other	0
Native American	0

**Age**
From 65 to 74	702
From 75 to 84	577
85 and over	291
Less than 65	173

Conditions of Medicare patients treated by Dr. Olga Lyass, MD in 2022

Hypertension	75
High Cholesterol	75
Stroke	19
Ischemic Heart Disease	59
Depression	33
Chronic Kidney Disease	49
Asthma	15
Osteoperosis	20
Atrial Fibrilation	31
Heart Failure	48
Chronic Obstructive Pulmonary Disease	31
Diabetes	60
Dementia	19
Cancer	26

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

The top procedures that Dr. Olga Lyass, MD treated as a nuclear medicine specialist in Lancaster, CA during 2023 were nuclear scan, stress testing, cardiac procedures and musculoskeletal imaging.

Volume of procedures performed by Dr. Olga Lyass, MD for Medicare patients.

abdominal imaging	48
cardiac procedures	858
diagnostic imaging	48
gastrointestinal procedures	48
lymph node procedures	12
musculoskeletal imaging	203
nuclear scan	1121
stress testing	858

2023 Medicare Patient Data

Information about Medicare patients treated by Dr. Olga Lyass, MD.

**Gender**
Male	796
Female	893

**Ethnicity**
Non-Hispanic White	817
Black	153
Hispanic	402
Asian	198
Other	119
Native American	0

**Age**
From 65 to 74	703
From 75 to 84	560
85 and over	229
Less than 65	197

Conditions of Medicare patients treated by Dr. Olga Lyass, MD in 2023

Hypertension	75
High Cholesterol	75
Stroke	19
Ischemic Heart Disease	60
Depression	35
Chronic Kidney Disease	47
Asthma	16
Osteoperosis	21
Atrial Fibrilation	31
Heart Failure	46
Chronic Obstructive Pulmonary Disease	31
Diabetes	60
Dementia	18
Cancer	24

Medicare Procedure and Patient Information

2024 Medicare Procedure Volume

The top procedures that Dr. Olga Lyass, MD treated as a nuclear medicine specialist in Lancaster, CA during 2024 were nuclear scan, stress testing, cardiac procedures and musculoskeletal imaging.

Volume of procedures performed by Dr. Olga Lyass, MD for Medicare patients.

abdominal imaging	56
cardiac procedures	685
diagnostic imaging	56
gastrointestinal procedures	56
musculoskeletal imaging	134
nuclear scan	875
stress testing	685

2024 Medicare Patient Data

Information about Medicare patients treated by Dr. Olga Lyass, MD.

**Gender**
Male	664
Female	726

**Ethnicity**
Non-Hispanic White	663
Black	130
Hispanic	352
Asian	154
Other	0
Native American	0

**Age**
From 65 to 74	569
From 75 to 84	479
85 and over	185
Less than 65	157

Conditions of Medicare patients treated by Dr. Olga Lyass, MD in 2024

Hypertension	75
High Cholesterol	75
Stroke	20
Ischemic Heart Disease	63
Depression	39
Chronic Kidney Disease	48
Asthma	18
Osteoperosis	19
Atrial Fibrilation	30
Heart Failure	45
Chronic Obstructive Pulmonary Disease	29
Diabetes	62
Dementia	22
Cancer	22

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2024

Volume of procedures performed by Dr. Olga Lyass, MD for Medicare patients.

The highest averages for the top procedures that Dr. Olga Lyass, MD treated as a nuclear medicine specialist in Lancaster, CA were nuclear scan, stress testing, cardiac procedures and musculoskeletal imaging.

abdominal imaging	49
cardiac procedures	1050
diagnostic imaging	49
endocrine imaging	29
gastrointestinal procedures	49
lymph node procedures	18
musculoskeletal imaging	402
nuclear scan	1535
stress testing	1050
thoracic (chest) imaging	15
thyroid function tests	29
X-rays	15

Average Medicare Patient Data From 2012 - 2024

Information about Medicare patients treated by Dr. Olga Lyass, MD.

**Gender**
Female	1285
Male	1120

**Ethnicity**
Black / African American	284
Asian / Pacific Islander	289
Non-Hispanic White	1192
Hispanic	540
Native American / Alaskan Native	0
Other	9

**Age**
85 and over	378
75 to 84	788
Less than 65	346
65 to 74	892

Average of Total of Conditions of Medicare patients treated by Dr. Olga Lyass, MD From 2012 - 2024

The highest averages of the most common conditions of Medicare patients that Dr. Olga Lyass, MD treated were hypertension, high cholesterol, ischemic heart disease and diabetes.

Hypertension	69
High Cholesterol	67
Stroke	12
Ischemic Heart Disease	62
Depression	32
Chronic Kidney Disease	51
Asthma	15
Osteoporosis	15
Heart Failure	45
Chronic Obstructive Pulmonary Disease	29
Diabetes	54
Atrial Fibrillation	19
Cancer	21
Dementia	22

Education & Training

She has a state license in California.

Licensed In: California

Affiliations & Hospitals

Dr. Olga Lyass, MD is associated with these hospitals and organizations:

Valley Presbyterian Hospital

Ratings & Reviews

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General Payments

These charts describe general payments received by Dr. Olga Lyass, MD. Doctors may receive payments for a number of reasons, including meal compensation, travel compensation, and consulting.

**Payments by Company**
Pfizer Inc.	$114 VYNDAQEL $114
Astellas Pharma US Inc	$25 Vesicare $25
Teleflex LLC	$17 Solesta $17

**Types of Payments**
Food and Beverage	$156

Biography

Dr. Olga Lyass is a specialist in nuclear medicine, nuclear radiology, and diagnostic radiology. Dr. Lyass (or staff) speaks the following foreign languages: Hebrew and Russian. Dr. Lyass's hospital/clinic affiliations include Valley Presbyterian Hospital and Dignity Health. She is a graduate of I.M. Sechenov Moscow Medical Academy. Unfortunately, according to Dignity Health, Dr. Lyass is not currently accepting new patients.