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Dr. Tammy Pei-Hsin Cheng Sievers, MD

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Specializes in: Adult Rheumatology

120 N Ashwood Avenue
Ventura, CA 93003

(805) 658-5800

Dr. Tammy Pei-Hsin Cheng Sievers, MD is a rheumatologist in Ventura, CA specializing in adult rheumatology.

Office Locations

120 N Ashwood Avenue
Ventura, CA 93003

(805) 658-5800

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5855 Olivas Park Drive
Ventura, CA 93003

(805) 667-2801

(805) 667-2865

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Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. Tammy Pei-Hsin Cheng Sievers, MD treated as a rheumatologist in Ventura, CA during 2012 were aspiration and injections.

Volume of procedures performed by Dr. Tammy Pei-Hsin Cheng Sievers, MD for Medicare patients.

aspiration	50
doctor visit	1126
injections	50

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Tammy Pei-Hsin Cheng Sievers, MD treated as a rheumatologist in Ventura, CA during 2013 were aspiration and injections.

Volume of procedures performed by Dr. Tammy Pei-Hsin Cheng Sievers, MD for Medicare patients.

aspiration	59
doctor visit	1299
injections	59

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Tammy Pei-Hsin Cheng Sievers, MD.

**Gender**
Male	89
Female	305

**Ethnicity**
Non-Hispanic White	274
Black	11
Hispanic	89
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	153
From 75 to 84	119
85 and over	37
Less than 65	85

Conditions of Medicare patients treated by Dr. Tammy Pei-Hsin Cheng Sievers, MD in 2013

Hypertension	64
High Cholesterol	57
Stroke	5
Ischemic Heart Disease	33
Depression	29
Chronic Kidney Disease	25
Asthma	14
Osteoperosis	18
Atrial Fibrilation	9
Heart Failure	15
Chronic Obstructive Pulmonary Disease	11
Diabetes	24
Dementia	7
Cancer	7

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Tammy Pei-Hsin Cheng Sievers, MD treated as a rheumatologist in Ventura, CA during 2014 were aspiration and injections.

Volume of procedures performed by Dr. Tammy Pei-Hsin Cheng Sievers, MD for Medicare patients.

aspiration	78
doctor visit	1608
injections	78

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Tammy Pei-Hsin Cheng Sievers, MD.

**Gender**
Male	92
Female	293

**Ethnicity**
Non-Hispanic White	259
Black	0
Hispanic	87
Asian	17
Other	0
Native American	0

**Age**
From 65 to 74	142
From 75 to 84	130
85 and over	36
Less than 65	77

Conditions of Medicare patients treated by Dr. Tammy Pei-Hsin Cheng Sievers, MD in 2014

Hypertension	67
High Cholesterol	52
Stroke	6
Ischemic Heart Disease	34
Depression	28
Chronic Kidney Disease	27
Asthma	13
Osteoperosis	17
Atrial Fibrilation	12
Heart Failure	17
Chronic Obstructive Pulmonary Disease	13
Diabetes	28
Dementia	6
Cancer	6

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Tammy Pei-Hsin Cheng Sievers, MD treated as a rheumatologist in Ventura, CA during 2015 were aspiration and injections.

Volume of procedures performed by Dr. Tammy Pei-Hsin Cheng Sievers, MD for Medicare patients.

aspiration	41
doctor visit	1943
injections	41

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Tammy Pei-Hsin Cheng Sievers, MD.

**Gender**
Male	194
Female	604

**Ethnicity**
Non-Hispanic White	528
Black	0
Hispanic	178
Asian	38
Other	0
Native American	0

**Age**
From 65 to 74	320
From 75 to 84	266
85 and over	74
Less than 65	138

Conditions of Medicare patients treated by Dr. Tammy Pei-Hsin Cheng Sievers, MD in 2015

Hypertension	66
High Cholesterol	53
Stroke	6
Ischemic Heart Disease	32
Depression	29
Chronic Kidney Disease	27
Asthma	14
Osteoperosis	17
Atrial Fibrilation	12
Heart Failure	16
Chronic Obstructive Pulmonary Disease	14
Diabetes	29
Dementia	5
Cancer	7

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Tammy Pei-Hsin Cheng Sievers, MD treated as a rheumatologist in Ventura, CA during 2016 were aspiration and injections.

Volume of procedures performed by Dr. Tammy Pei-Hsin Cheng Sievers, MD for Medicare patients.

aspiration	53
doctor visit	1879
injections	53

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Tammy Pei-Hsin Cheng Sievers, MD.

**Gender**
Male	98
Female	336

**Ethnicity**
Non-Hispanic White	259
Black	17
Hispanic	118
Asian	28
Other	0
Native American	0

**Age**
From 65 to 74	176
From 75 to 84	147
85 and over	39
Less than 65	72

Conditions of Medicare patients treated by Dr. Tammy Pei-Hsin Cheng Sievers, MD in 2016

Hypertension	68
High Cholesterol	53
Stroke	6
Ischemic Heart Disease	33
Depression	26
Chronic Kidney Disease	31
Asthma	17
Osteoperosis	19
Atrial Fibrilation	11
Heart Failure	17
Chronic Obstructive Pulmonary Disease	15
Diabetes	28
Dementia	6
Cancer	6

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Tammy Pei-Hsin Cheng Sievers, MD treated as a rheumatologist in Ventura, CA during 2017 were aspiration and injections.

Volume of procedures performed by Dr. Tammy Pei-Hsin Cheng Sievers, MD for Medicare patients.

aspiration	72
doctor visit	1352
injections	72

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Tammy Pei-Hsin Cheng Sievers, MD.

**Gender**
Male	68
Female	242

**Ethnicity**
Non-Hispanic White	186
Black	0
Hispanic	86
Asian	17
Other	0
Native American	0

**Age**
From 65 to 74	128
From 75 to 84	110
85 and over	30
Less than 65	42

Conditions of Medicare patients treated by Dr. Tammy Pei-Hsin Cheng Sievers, MD in 2017

Hypertension	70
High Cholesterol	56
Stroke	5
Ischemic Heart Disease	31
Depression	27
Chronic Kidney Disease	32
Asthma	11
Osteoperosis	22
Atrial Fibrilation	13
Heart Failure	16
Chronic Obstructive Pulmonary Disease	14
Diabetes	27
Dementia	9
Cancer	7

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Tammy Pei-Hsin Cheng Sievers, MD treated as a rheumatologist in Ventura, CA during 2018 were aspiration and injections.

Volume of procedures performed by Dr. Tammy Pei-Hsin Cheng Sievers, MD for Medicare patients.

aspiration	64
doctor visit	1438
injections	64

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Tammy Pei-Hsin Cheng Sievers, MD.

**Gender**
Male	74
Female	226

**Ethnicity**
Non-Hispanic White	181
Black	0
Hispanic	83
Asian	15
Other	0
Native American	0

**Age**
From 65 to 74	123
From 75 to 84	106
85 and over	32
Less than 65	39

Conditions of Medicare patients treated by Dr. Tammy Pei-Hsin Cheng Sievers, MD in 2018

Hypertension	68
High Cholesterol	55
Stroke	5
Ischemic Heart Disease	30
Depression	28
Chronic Kidney Disease	31
Asthma	8
Osteoperosis	24
Atrial Fibrilation	12
Heart Failure	16
Chronic Obstructive Pulmonary Disease	12
Diabetes	29
Dementia	11
Cancer	8

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Tammy Pei-Hsin Cheng Sievers, MD treated as a rheumatologist in Ventura, CA during 2019 were aspiration and injections.

Volume of procedures performed by Dr. Tammy Pei-Hsin Cheng Sievers, MD for Medicare patients.

aspiration	48
doctor visit	1258
injections	48

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Tammy Pei-Hsin Cheng Sievers, MD.

**Gender**
Male	56
Female	216

**Ethnicity**
Non-Hispanic White	162
Black	0
Hispanic	76
Asian	14
Other	0
Native American	0

**Age**
From 65 to 74	117
From 75 to 84	86
85 and over	35
Less than 65	34

Conditions of Medicare patients treated by Dr. Tammy Pei-Hsin Cheng Sievers, MD in 2019

Hypertension	69
High Cholesterol	63
Stroke	5
Ischemic Heart Disease	30
Depression	30
Chronic Kidney Disease	33
Asthma	10
Osteoperosis	25
Atrial Fibrilation	12
Heart Failure	16
Chronic Obstructive Pulmonary Disease	13
Diabetes	31
Dementia	12
Cancer	7

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Tammy Pei-Hsin Cheng Sievers, MD treated as a rheumatologist in Ventura, CA during 2020 were aspiration and injections.

Volume of procedures performed by Dr. Tammy Pei-Hsin Cheng Sievers, MD for Medicare patients.

aspiration	48
doctor visit	972
injections	48

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Tammy Pei-Hsin Cheng Sievers, MD.

**Gender**
Male	63
Female	197

**Ethnicity**
Non-Hispanic White	162
Black	0
Hispanic	68
Asian	12
Other	0
Native American	0

**Age**
From 65 to 74	115
From 75 to 84	84
85 and over	32
Less than 65	29

Conditions of Medicare patients treated by Dr. Tammy Pei-Hsin Cheng Sievers, MD in 2020

Hypertension	68
High Cholesterol	57
Stroke	0
Ischemic Heart Disease	28
Depression	27
Chronic Kidney Disease	32
Asthma	8
Osteoperosis	23
Atrial Fibrilation	11
Heart Failure	16
Chronic Obstructive Pulmonary Disease	13
Diabetes	25
Dementia	8
Cancer	7

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Tammy Pei-Hsin Cheng Sievers, MD treated as a rheumatologist in Ventura, CA during 2021 were aspiration and injections.

Volume of procedures performed by Dr. Tammy Pei-Hsin Cheng Sievers, MD for Medicare patients.

aspiration	56
doctor visit	1160
injections	56

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Tammy Pei-Hsin Cheng Sievers, MD.

**Gender**
Male	70
Female	207

**Ethnicity**
Non-Hispanic White	165
Black	0
Hispanic	80
Asian	14
Other	0
Native American	0

**Age**
From 65 to 74	120
From 75 to 84	91
85 and over	38
Less than 65	28

Conditions of Medicare patients treated by Dr. Tammy Pei-Hsin Cheng Sievers, MD in 2021

Hypertension	67
High Cholesterol	60
Stroke	0
Ischemic Heart Disease	28
Depression	26
Chronic Kidney Disease	31
Asthma	9
Osteoperosis	27
Atrial Fibrilation	10
Heart Failure	16
Chronic Obstructive Pulmonary Disease	12
Diabetes	27
Dementia	8
Cancer	10

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Tammy Pei-Hsin Cheng Sievers, MD treated as a rheumatologist in Ventura, CA during 2022 were aspiration and injections.

Volume of procedures performed by Dr. Tammy Pei-Hsin Cheng Sievers, MD for Medicare patients.

aspiration	40
doctor visit	1126
injections	40

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Tammy Pei-Hsin Cheng Sievers, MD.

**Gender**
Male	72
Female	220

**Ethnicity**
Non-Hispanic White	175
Black	0
Hispanic	79
Asian	19
Other	0
Native American	0

**Age**
From 65 to 74	130
From 75 to 84	95
85 and over	45
Less than 65	22

Conditions of Medicare patients treated by Dr. Tammy Pei-Hsin Cheng Sievers, MD in 2022

Hypertension	75
High Cholesterol	72
Stroke	5
Ischemic Heart Disease	23
Depression	27
Chronic Kidney Disease	26
Asthma	15
Osteoperosis	34
Atrial Fibrilation	18
Heart Failure	14
Chronic Obstructive Pulmonary Disease	15
Diabetes	32
Dementia	7
Cancer	10

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. Tammy Pei-Hsin Cheng Sievers, MD for Medicare patients.

The highest averages for the top procedures that Dr. Tammy Pei-Hsin Cheng Sievers, MD treated as a rheumatologist in Ventura, CA were aspiration and injections.

aspiration	55
doctor visit	1378
injections	55

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. Tammy Pei-Hsin Cheng Sievers, MD.

**Gender**
Male	79
Female	258

**Ethnicity**
Black / African American	2
Asian / Pacific Islander	15
Non-Hispanic White	213
Native American / Alaskan Native	0
Hispanic	85
Other	0

**Age**
75 to 84	112
85 and over	36
Less than 65	51
65 to 74	138

Average of Total of Conditions of Medicare patients treated by Dr. Tammy Pei-Hsin Cheng Sievers, MD From 2012 - 2022

The highest averages of the most common conditions of Medicare patients that Dr. Tammy Pei-Hsin Cheng Sievers, MD treated were hypertension, high cholesterol, ischemic heart disease and chronic kidney disease.

Hypertension	62
High Cholesterol	52
Stroke	3
Ischemic Heart Disease	27
Depression	25
Chronic Kidney Disease	26
Asthma	10
Osteoporosis	20
Heart Failure	14
Chronic Obstructive Pulmonary Disease	12
Diabetes	25
Atrial Fibrillation	10
Dementia	7
Cancer	6

Education & Training

She has a state license in California.

Licensed In: California

Ratings & Reviews

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General Payments

These charts describe general payments received by Dr. Tammy Pei-Hsin Cheng Sievers, MD. Doctors may receive payments for a number of reasons, including meal compensation, travel compensation, and consulting.

**Payments by Company**
UCB, Inc.	$1,432 Cimzia $1,432
Amgen Inc.	$1,073 Prolia $521	Enbrel $421	Tavneos $73	Otezla $30	Repatha $16	Other $12
Janssen Biotech, Inc.	$165 SIMPONI $64	SIMPONI ARIA $51	Tremfya $40	STELARA $10
Questcor Pharmaceuticals	$164 ACTHAR $164
Pfizer Inc.	$150 XELJANZ $127	LYRICA $12	CELEBREX $11
Other	$831 Actemra $130	COSENTYX $85	KRYSTEXXA $77	RAYOS $52	Humira $50	Other $438

**Types of Payments**
Food and Beverage	$3,765
Education	$50

Biography

Dr. Tammy Sievers' area of specialization is adult rheumatology. She is a graduate of Washington University in St. Louis School of Medicine.

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Dr. Tammy Pei-Hsin Cheng Sievers, MD

Office Locations

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. Tammy Pei-Hsin Cheng Sievers, MD in 2013

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

2014 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Tammy Pei-Hsin Cheng Sievers, MD in 2014

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

2015 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Tammy Pei-Hsin Cheng Sievers, MD in 2015

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

2016 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Tammy Pei-Hsin Cheng Sievers, MD in 2016

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

2017 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Tammy Pei-Hsin Cheng Sievers, MD in 2017

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

2018 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Tammy Pei-Hsin Cheng Sievers, MD in 2018

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

2019 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Tammy Pei-Hsin Cheng Sievers, MD in 2019

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

2020 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Tammy Pei-Hsin Cheng Sievers, MD in 2020

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

2021 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Tammy Pei-Hsin Cheng Sievers, MD in 2021

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

2022 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Tammy Pei-Hsin Cheng Sievers, MD in 2022

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Average Medicare Patient Data From 2012 - 2022

Average of Total of Conditions of Medicare patients treated by Dr. Tammy Pei-Hsin Cheng Sievers, MD From 2012 - 2022

Education & Training

Ratings & Reviews

General Payments

Biography

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