In 2012, among providers in related specialties within California, Dr. Maciej Gerard Ossowski, MD performed more diabetes management, lab tests, and preventive care procedures for Medicare patients than 75% of them and he also had a list price for cervical cancer screening, cytology, gynecologic cytology, gynecologic pathology, Pap screening, Pap test, and preventive care that was lower than the list prices billed to Medicare by 75% of them. Actual amounts paid by patients can vary widely depending on a number of factors, including insurance coverage. A lower list price, however, might mean lower fees when paying without insurance.

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. Maciej Gerard Ossowski, MD treated as a family medicine practitioner in Merced, CA during 2012 were lab tests, diabetes management, minor procedures and compression therapy.

Volume of procedures performed by Dr. Maciej Gerard Ossowski, MD for Medicare patients.

compression therapy	320
diabetes management	342
doctor visit	2352
immobilization	320
lab tests	342
minor procedures	329
preventive care	91
removal of lesion (e.g. growth)	15
skin procedures	15
vaccines	91

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Maciej Gerard Ossowski, MD treated as a family medicine practitioner in Merced, CA during 2013 were lab tests, diabetes management, preventive care and vaccines.

Volume of procedures performed by Dr. Maciej Gerard Ossowski, MD for Medicare patients.

diabetes management	275
doctor visit	1344
lab tests	275
preventive care	72
vaccines	60

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Maciej Gerard Ossowski, MD.

**Gender**
Male	93
Female	128

**Ethnicity**
Non-Hispanic White	152
Black	0
Hispanic	44
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	96
From 75 to 84	45
85 and over	22
Less than 65	58

Conditions of Medicare patients treated by Dr. Maciej Gerard Ossowski, MD in 2013

Hypertension	67
High Cholesterol	75
Stroke	0
Ischemic Heart Disease	31
Depression	16
Chronic Kidney Disease	17
Asthma	41
Osteoperosis	7
Atrial Fibrilation	5
Heart Failure	28
Chronic Obstructive Pulmonary Disease	16
Diabetes	40
Dementia	6
Cancer	10

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Maciej Gerard Ossowski, MD treated as a family medicine practitioner in Merced, CA during 2014 were lab tests, diabetes management, preventive care and vaccines.

Volume of procedures performed by Dr. Maciej Gerard Ossowski, MD for Medicare patients.

diabetes management	218
doctor visit	1412
lab tests	218
preventive care	62
vaccines	62

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Maciej Gerard Ossowski, MD.

**Gender**
Male	99
Female	119

**Ethnicity**
Non-Hispanic White	152
Black	0
Hispanic	42
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	97
From 75 to 84	46
85 and over	18
Less than 65	57

Conditions of Medicare patients treated by Dr. Maciej Gerard Ossowski, MD in 2014

Hypertension	58
High Cholesterol	75
Stroke	0
Ischemic Heart Disease	29
Depression	22
Chronic Kidney Disease	16
Asthma	48
Osteoperosis	10
Atrial Fibrilation	5
Heart Failure	29
Chronic Obstructive Pulmonary Disease	16
Diabetes	46
Dementia	8
Cancer	8

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Maciej Gerard Ossowski, MD treated as a family medicine practitioner in Merced, CA during 2015 were lab tests, diabetes management, chronic care and preventive care.

Volume of procedures performed by Dr. Maciej Gerard Ossowski, MD for Medicare patients.

chronic care	40
diabetes management	151
doctor visit	1405
lab tests	151
preventive care	32
vaccines	32

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Maciej Gerard Ossowski, MD.

**Gender**
Male	222
Female	232

**Ethnicity**
Non-Hispanic White	314
Black	0
Hispanic	92
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	198
From 75 to 84	86
85 and over	48
Less than 65	122

Conditions of Medicare patients treated by Dr. Maciej Gerard Ossowski, MD in 2015

Hypertension	67
High Cholesterol	72
Stroke	6
Ischemic Heart Disease	30
Depression	30
Chronic Kidney Disease	19
Asthma	40
Osteoperosis	8
Atrial Fibrilation	7
Heart Failure	24
Chronic Obstructive Pulmonary Disease	22
Diabetes	54
Dementia	10
Cancer	12

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Maciej Gerard Ossowski, MD treated as a family medicine practitioner in Merced, CA during 2016 were lab tests, diabetes management, preventive care and vaccines.

Volume of procedures performed by Dr. Maciej Gerard Ossowski, MD for Medicare patients.

diabetes management	47
doctor visit	1227
lab tests	47
preventive care	26
vaccines	26

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Maciej Gerard Ossowski, MD.

**Gender**
Male	98
Female	112

**Ethnicity**
Non-Hispanic White	138
Black	0
Hispanic	48
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	96
From 75 to 84	36
85 and over	20
Less than 65	58

Conditions of Medicare patients treated by Dr. Maciej Gerard Ossowski, MD in 2016

Hypertension	75
High Cholesterol	66
Stroke	0
Ischemic Heart Disease	30
Depression	23
Chronic Kidney Disease	26
Asthma	35
Osteoperosis	7
Atrial Fibrilation	0
Heart Failure	22
Chronic Obstructive Pulmonary Disease	21
Diabetes	56
Dementia	8
Cancer	9

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Maciej Gerard Ossowski, MD treated as a family medicine practitioner in Merced, CA during 2017 were lab tests and diabetes management.

Volume of procedures performed by Dr. Maciej Gerard Ossowski, MD for Medicare patients.

diabetes management	86
doctor visit	1299
lab tests	86

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Maciej Gerard Ossowski, MD.

**Gender**
Male	108
Female	116

**Ethnicity**
Non-Hispanic White	145
Black	0
Hispanic	51
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	101
From 75 to 84	45
85 and over	21
Less than 65	57

Conditions of Medicare patients treated by Dr. Maciej Gerard Ossowski, MD in 2017

Hypertension	75
High Cholesterol	59
Stroke	0
Ischemic Heart Disease	44
Depression	27
Chronic Kidney Disease	22
Asthma	21
Osteoperosis	9
Atrial Fibrilation	5
Heart Failure	21
Chronic Obstructive Pulmonary Disease	22
Diabetes	57
Dementia	8
Cancer	8

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Maciej Gerard Ossowski, MD treated as a family medicine practitioner in Merced, CA during 2018 were lab tests, diabetes management, preventive care and vaccines.

Volume of procedures performed by Dr. Maciej Gerard Ossowski, MD for Medicare patients.

diabetes management	73
doctor visit	1175
lab tests	73
preventive care	13
vaccines	13

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Maciej Gerard Ossowski, MD.

**Gender**
Male	98
Female	97

**Ethnicity**
Non-Hispanic White	123
Black	0
Hispanic	44
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	87
From 75 to 84	41
85 and over	18
Less than 65	49

Conditions of Medicare patients treated by Dr. Maciej Gerard Ossowski, MD in 2018

Hypertension	75
High Cholesterol	56
Stroke	0
Ischemic Heart Disease	48
Depression	26
Chronic Kidney Disease	23
Asthma	18
Osteoperosis	7
Atrial Fibrilation	7
Heart Failure	25
Chronic Obstructive Pulmonary Disease	22
Diabetes	66
Dementia	8
Cancer	0

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Maciej Gerard Ossowski, MD treated as a family medicine practitioner in Merced, CA during 2019 were preventive care, lab tests, diabetes management and vaccines.

Volume of procedures performed by Dr. Maciej Gerard Ossowski, MD for Medicare patients.

diabetes management	55
doctor visit	1029
lab tests	55
preventive care	69
vaccines	44

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Maciej Gerard Ossowski, MD.

**Gender**
Male	111
Female	147

**Ethnicity**
Non-Hispanic White	152
Black	24
Hispanic	65
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	113
From 75 to 84	52
85 and over	24
Less than 65	69

Conditions of Medicare patients treated by Dr. Maciej Gerard Ossowski, MD in 2019

Hypertension	75
High Cholesterol	53
Stroke	4
Ischemic Heart Disease	31
Depression	23
Chronic Kidney Disease	23
Asthma	12
Osteoperosis	7
Atrial Fibrilation	7
Heart Failure	26
Chronic Obstructive Pulmonary Disease	20
Diabetes	43
Dementia	7
Cancer	7

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Maciej Gerard Ossowski, MD treated as a family medicine practitioner in Merced, CA during 2020 were lab tests, preventive care, diabetes management and breast exam.

Volume of procedures performed by Dr. Maciej Gerard Ossowski, MD for Medicare patients.

breast exam	11
diabetes management	16
doctor visit	1132
gynecologic procedures	11
lab tests	16
preventive care	16

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Maciej Gerard Ossowski, MD.

**Gender**
Male	97
Female	137

**Ethnicity**
Non-Hispanic White	131
Black	21
Hispanic	68
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	109
From 75 to 84	47
85 and over	18
Less than 65	60

Conditions of Medicare patients treated by Dr. Maciej Gerard Ossowski, MD in 2020

Hypertension	72
High Cholesterol	49
Stroke	0
Ischemic Heart Disease	31
Depression	15
Chronic Kidney Disease	25
Asthma	20
Osteoperosis	6
Atrial Fibrilation	6
Heart Failure	27
Chronic Obstructive Pulmonary Disease	19
Diabetes	37
Dementia	6
Cancer	6

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Maciej Gerard Ossowski, MD treated as a family medicine practitioner in Merced, CA during 2021 were lab tests, preventive care and diabetes management.

Volume of procedures performed by Dr. Maciej Gerard Ossowski, MD for Medicare patients.

diabetes management	17
doctor visit	1046
lab tests	17
preventive care	17

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Maciej Gerard Ossowski, MD.

**Gender**
Male	100
Female	156

**Ethnicity**
Non-Hispanic White	143
Black	23
Hispanic	72
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	113
From 75 to 84	68
85 and over	24
Less than 65	51

Conditions of Medicare patients treated by Dr. Maciej Gerard Ossowski, MD in 2021

Hypertension	64
High Cholesterol	51
Stroke	0
Ischemic Heart Disease	29
Depression	8
Chronic Kidney Disease	27
Asthma	16
Osteoperosis	7
Atrial Fibrilation	5
Heart Failure	23
Chronic Obstructive Pulmonary Disease	14
Diabetes	33
Dementia	6
Cancer	4

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Maciej Gerard Ossowski, MD treated as a family medicine practitioner in Merced, CA during 2022 were lab tests, preventive care and diabetes management.

Volume of procedures performed by Dr. Maciej Gerard Ossowski, MD for Medicare patients.

diabetes management	24
doctor visit	1181
lab tests	24
preventive care	24

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Maciej Gerard Ossowski, MD.

**Gender**
Male	92
Female	129

**Ethnicity**
Non-Hispanic White	126
Black	18
Hispanic	59
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	99
From 75 to 84	49
85 and over	23
Less than 65	50

Conditions of Medicare patients treated by Dr. Maciej Gerard Ossowski, MD in 2022

Hypertension	75
High Cholesterol	75
Stroke	0
Ischemic Heart Disease	26
Depression	14
Chronic Kidney Disease	27
Asthma	24
Osteoperosis	10
Atrial Fibrilation	12
Heart Failure	18
Chronic Obstructive Pulmonary Disease	22
Diabetes	34
Dementia	0
Cancer	9

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

The top procedures that Dr. Maciej Gerard Ossowski, MD treated as a family medicine practitioner in Merced, CA during 2023 were lab tests, preventive care and diabetes management.

Volume of procedures performed by Dr. Maciej Gerard Ossowski, MD for Medicare patients.

diabetes management	73
doctor visit	1327
lab tests	97
preventive care	85

2023 Medicare Patient Data

Information about Medicare patients treated by Dr. Maciej Gerard Ossowski, MD.

**Gender**
Male	79
Female	142

**Ethnicity**
Non-Hispanic White	129
Black	15
Hispanic	63
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	106
From 75 to 84	51
85 and over	19
Less than 65	45

Conditions of Medicare patients treated by Dr. Maciej Gerard Ossowski, MD in 2023

Hypertension	75
High Cholesterol	75
Stroke	6
Ischemic Heart Disease	28
Depression	15
Chronic Kidney Disease	25
Asthma	23
Osteoperosis	10
Atrial Fibrilation	15
Heart Failure	18
Chronic Obstructive Pulmonary Disease	22
Diabetes	36
Dementia	0
Cancer	11

Medicare Procedure and Patient Information

2024 Medicare Procedure Volume

The top procedures that Dr. Maciej Gerard Ossowski, MD treated as a family medicine practitioner in Merced, CA during 2024 were lab tests, diabetes management, preventive care and cytology.

Volume of procedures performed by Dr. Maciej Gerard Ossowski, MD for Medicare patients.

cytology	12
diabetes management	125
doctor visit	1139
gynecologic pathology	12
lab tests	147
preventive care	78

2024 Medicare Patient Data

Information about Medicare patients treated by Dr. Maciej Gerard Ossowski, MD.

**Gender**
Male	95
Female	161

**Ethnicity**
Non-Hispanic White	135
Black	21
Hispanic	82
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	121
From 75 to 84	69
85 and over	20
Less than 65	46

Conditions of Medicare patients treated by Dr. Maciej Gerard Ossowski, MD in 2024

Hypertension	75
High Cholesterol	75
Stroke	0
Ischemic Heart Disease	26
Depression	14
Chronic Kidney Disease	21
Asthma	23
Osteoperosis	13
Atrial Fibrilation	14
Heart Failure	20
Chronic Obstructive Pulmonary Disease	25
Diabetes	42
Dementia	5
Cancer	11

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2024

Volume of procedures performed by Dr. Maciej Gerard Ossowski, MD for Medicare patients.

The highest averages for the top procedures that Dr. Maciej Gerard Ossowski, MD treated as a family medicine practitioner in Merced, CA were minor procedures, compression therapy, immobilization and lab tests.

breast exam	11
chronic care	40
compression therapy	320
cytology	12
diabetes management	115
doctor visit	1312
gynecologic pathology	12
gynecologic procedures	11
immobilization	320
lab tests	119
minor procedures	329
preventive care	48
removal of lesion (e.g. growth)	15
skin procedures	15
vaccines	46

Average Medicare Patient Data From 2012 - 2024

Information about Medicare patients treated by Dr. Maciej Gerard Ossowski, MD.

**Gender**
Female	128
Male	99

**Ethnicity**
Black / African American	9
Asian / Pacific Islander	0
Non-Hispanic White	141
Hispanic	56
Native American / Alaskan Native	0
Other	0

**Age**
85 and over	21
75 to 84	48
Less than 65	55
65 to 74	102

Average of Total of Conditions of Medicare patients treated by Dr. Maciej Gerard Ossowski, MD From 2012 - 2024

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

Hypertension	65
High Cholesterol	60
Stroke	1
Ischemic Heart Disease	29
Depression	17
Chronic Kidney Disease	20
Asthma	24
Osteoporosis	7
Heart Failure	21
Chronic Obstructive Pulmonary Disease	18
Diabetes	41
Atrial Fibrillation	6
Cancer	7
Dementia	5

Education & Training

He has a state license in California.

Licensed In: California

Ratings & Reviews

Dr. Maciej Gerard Ossowski, MD has a high overall rating with an average of 3.88 out of 5 stars based on 13 ratings. We collect ratings and reviews of Dr. Maciej Gerard Ossowski, MD from all over the web to help you find the right in Merced, CA.

3.88

Overall Rating

(13 Ratings)

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General Payments

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

**Payments by Company**
Pfizer Inc.	$342 EUCRISA $209	COLOGUARD $88	PREVNAR - 13 $40	LYRICA $6
Amarin Pharma Inc.	$236 Vascepa $236
Novo Nordisk Inc	$208 Tresiba $105	Victoza $42	Ozempic $40	RYBELSUS $20
Merck Sharp & Dohme LLC	$142 BELSOMRA $127	STEGLATRO $16
Lilly USA, LLC	$133 MOUNJARO $53	EMGALITY $25	TRULICITY $16	HUMALOG $14	TRADJENTA $13	Other $11
Other	$788 UBRELVY $80	REXULTI $50	Otovel $42	MOVANTIK $41	Nuedexta $41	Other $535

**Types of Payments**
Food and Beverage	$1,793
Education	$56

Biography

Dr. Maciej Ossowski specializes in family medicine. Patients gave him an average rating of 3.5 stars (out of 5).

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Dr. Maciej Gerard Ossowski, MD

Office Locations

Noteworthy Medicare Patient Procedures Performed by Dr. Maciej Gerard Ossowski, MD in 2024

By Volume:

By Affordability:

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

2013 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Maciej Gerard Ossowski, MD in 2013

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

2014 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Maciej Gerard Ossowski, MD in 2014

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

2015 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Maciej Gerard Ossowski, MD in 2015

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

2016 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Maciej Gerard Ossowski, MD in 2016

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

2017 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Maciej Gerard Ossowski, MD in 2017

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

2018 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Maciej Gerard Ossowski, MD in 2018

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

2019 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Maciej Gerard Ossowski, MD in 2019

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

2020 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Maciej Gerard Ossowski, MD in 2020

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

2021 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Maciej Gerard Ossowski, MD in 2021

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

2022 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Maciej Gerard Ossowski, MD in 2022

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

2023 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Maciej Gerard Ossowski, MD in 2023

Medicare Procedure and Patient Information

2024 Medicare Procedure Volume

2024 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Maciej Gerard Ossowski, MD in 2024

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2024

Average Medicare Patient Data From 2012 - 2024

Average of Total of Conditions of Medicare patients treated by Dr. Maciej Gerard Ossowski, MD From 2012 - 2024

Education & Training

Ratings & Reviews

General Payments

Biography

Family Physicians & Family Medicine Specialists in Nearby Locations

Other Providers in Merced, CA