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Dr. Peter Yi Shen, MD

Accepting New Patients

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Specializes in: Diagnostic Radiology and Neuroradiology

SUNY Downstate Medical Center College of Medicine

Professional interests include: X-rays, fetal MRI, lung cancer screening, and more.

2025 Soquel Avenue 1st Floor
Santa Cruz, CA 95062

(831) 423-4111

Dr. Peter Yi Shen, MD is a diagnostic radiologist in Santa Cruz, CA specializing in diagnostic radiology and neuroradiology. He graduated from SUNY Downstate Medical Center College of Medicine. Dr. Peter Yi Shen, MD is affiliated with Sutter Health.

Office Locations

Sutter Health

2025 Soquel Avenue 1st Floor
Santa Cruz, CA 95062

(831) 423-4111

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Some issues Dr. Peter Yi Shen, MD can help you with:

Joint Injections

A joint is any area of the body where two bones connect. Due to injury or disease, the space between the two bones can sometimes become swollen and inflamed, which leads to pain and a loss of mobility. Injection and aspiration are two tools that physicians use to treat joint pain locally without needing to perform surgery.

Both injection and aspiration are techniques that involve inserting a needle connected to a syringe directly into the joint. Aspiration involves the removal of excess fluid, and injection is the placement of medication directly into the joint space via the needle. Both procedures may be performed at the same time. In both cases a local anesthetic may be used, the skin will be cleaned and disinfected, and then the needle will be inserted. In some cases, especially if the injection or aspiration is in a large and deep joint such as the hip or spine, ultrasound may be used to guide the needle to the exact location desired.

In some cases, irritation to the joint can cause fluid to build up so significantly that the joint hurts and can no longer move well. Aspiration removes some of the excess fluid and relieves the pressure. In addition, aspiration can be used to provide a sample of joint fluid if it needs to be examined microscopically for the presence of white blood cells, bacteria, or crystal formations.

Certain injuries and diseases that affect joints are inflammatory in nature, such as rheumatoid arthritis, tendonitis or gout. These diseases may be helped by the local injection of anti-inflammatory medications directly into the affected joint. In this case, corticosteroids such as methylprednisone are usually used. Relief from the pain may be felt right away and may last for weeks or even months.

In some cases, such as with osteoarthritis, the cartilage buffer between the two bones wears down and pain comes from bones rubbing against each other. In this case, injection of a lubricating agent such as hyaluronic acid may be beneficial. It provides a slippery cushion between the bones to relieve pain that can last for months.

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. Peter Yi Shen, MD treated as a diagnostic radiologist in Santa Cruz, CA during 2012 were spinal procedures, brain imaging (neuroimaging), MRI (magnetic resonance imaging) and CT scan.

Volume of procedures performed by Dr. Peter Yi Shen, MD for Medicare patients.

brain imaging (neuroimaging)	473
CT scan	383
eye procedures	13
MRI (magnetic resonance imaging)	432
neck imaging	69
spinal procedures	634
vascular procedures	99
X-rays	302

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Peter Yi Shen, MD treated as a diagnostic radiologist in Santa Cruz, CA during 2013 were spinal procedures, brain imaging (neuroimaging), CT scan and MRI (magnetic resonance imaging).

Volume of procedures performed by Dr. Peter Yi Shen, MD for Medicare patients.

brain imaging (neuroimaging)	846
CT scan	731
diagnostic procedures	12
MRI (magnetic resonance imaging)	659
neck imaging	109
spinal procedures	930
vascular procedures	186
X-rays	366

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Peter Yi Shen, MD.

**Gender**
Male	648
Female	757

**Ethnicity**
Non-Hispanic White	994
Black	165
Hispanic	123
Asian	96
Other	12
Native American	15

**Age**
From 65 to 74	567
From 75 to 84	321
85 and over	135
Less than 65	382

Conditions of Medicare patients treated by Dr. Peter Yi Shen, MD in 2013

Hypertension	67
High Cholesterol	48
Stroke	12
Ischemic Heart Disease	37
Depression	31
Chronic Kidney Disease	28
Asthma	12
Osteoperosis	10
Atrial Fibrilation	12
Heart Failure	23
Chronic Obstructive Pulmonary Disease	17
Diabetes	32
Dementia	14
Cancer	10

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Peter Yi Shen, MD treated as a diagnostic radiologist in Santa Cruz, CA during 2014 were brain imaging (neuroimaging), spinal procedures, CT scan and MRI (magnetic resonance imaging).

Volume of procedures performed by Dr. Peter Yi Shen, MD for Medicare patients.

brain imaging (neuroimaging)	926
CT scan	761
diagnostic procedures	13
MRI (magnetic resonance imaging)	685
neck imaging	94
spinal procedures	824
vascular procedures	180
X-rays	263

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Peter Yi Shen, MD.

**Gender**
Male	620
Female	787

**Ethnicity**
Non-Hispanic White	971
Black	154
Hispanic	144
Asian	104
Other	0
Native American	0

**Age**
From 65 to 74	556
From 75 to 84	342
85 and over	135
Less than 65	374

Conditions of Medicare patients treated by Dr. Peter Yi Shen, MD in 2014

Hypertension	68
High Cholesterol	50
Stroke	15
Ischemic Heart Disease	40
Depression	34
Chronic Kidney Disease	31
Asthma	12
Osteoperosis	9
Atrial Fibrilation	13
Heart Failure	25
Chronic Obstructive Pulmonary Disease	18
Diabetes	31
Dementia	15
Cancer	13

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Peter Yi Shen, MD treated as a diagnostic radiologist in Santa Cruz, CA during 2015 were brain imaging (neuroimaging), CT scan, MRI (magnetic resonance imaging) and spinal procedures.

Volume of procedures performed by Dr. Peter Yi Shen, MD for Medicare patients.

brain imaging (neuroimaging)	739
CT scan	632
MRI (magnetic resonance imaging)	551
neck imaging	84
spinal procedures	517
vascular procedures	131
X-rays	66

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Peter Yi Shen, MD.

**Gender**
Male	982
Female	1104

**Ethnicity**
Non-Hispanic White	1458
Black	196
Hispanic	188
Asian	196
Other	0
Native American	0

**Age**
From 65 to 74	824
From 75 to 84	482
85 and over	242
Less than 65	538

Conditions of Medicare patients treated by Dr. Peter Yi Shen, MD in 2015

Hypertension	71
High Cholesterol	55
Stroke	17
Ischemic Heart Disease	40
Depression	32
Chronic Kidney Disease	33
Asthma	14
Osteoperosis	10
Atrial Fibrilation	12
Heart Failure	26
Chronic Obstructive Pulmonary Disease	18
Diabetes	35
Dementia	17
Cancer	13

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Peter Yi Shen, MD treated as a diagnostic radiologist in Santa Cruz, CA during 2016 were brain imaging (neuroimaging), X-rays, thoracic (chest) imaging and CT scan.

Volume of procedures performed by Dr. Peter Yi Shen, MD for Medicare patients.

brain imaging (neuroimaging)	27
CT scan	16
MRI (magnetic resonance imaging)	11
thoracic (chest) imaging	26
X-rays	26

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Peter Yi Shen, MD.

**Gender**
Male	54
Female	59

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

**Age**
From 65 to 74	39
From 75 to 84	24
85 and over	17
Less than 65	33

Conditions of Medicare patients treated by Dr. Peter Yi Shen, MD in 2016

Hypertension	62
High Cholesterol	50
Stroke	11
Ischemic Heart Disease	39
Depression	25
Chronic Kidney Disease	31
Asthma	21
Osteoperosis	0
Atrial Fibrilation	11
Heart Failure	27
Chronic Obstructive Pulmonary Disease	19
Diabetes	40
Dementia	15
Cancer	16

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Peter Yi Shen, MD treated as a diagnostic radiologist in Santa Cruz, CA during 2017 were brain imaging (neuroimaging), X-rays, thoracic (chest) imaging and CT scan.

Volume of procedures performed by Dr. Peter Yi Shen, MD for Medicare patients.

brain imaging (neuroimaging)	22
CT scan	11
MRI (magnetic resonance imaging)	11
thoracic (chest) imaging	15
X-rays	15

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Peter Yi Shen, MD.

**Gender**
Male	36
Female	44

**Ethnicity**
Non-Hispanic White	29
Black	0
Hispanic	16
Asian	22
Other	0
Native American	0

**Age**
From 65 to 74	24
From 75 to 84	12
85 and over	12
Less than 65	32

Conditions of Medicare patients treated by Dr. Peter Yi Shen, MD in 2017

Hypertension	71
High Cholesterol	61
Stroke	21
Ischemic Heart Disease	34
Depression	31
Chronic Kidney Disease	51
Asthma	14
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	26
Chronic Obstructive Pulmonary Disease	14
Diabetes	44
Dementia	18
Cancer	0

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Peter Yi Shen, MD treated as a diagnostic radiologist in Santa Cruz, CA during 2018 were MRI (magnetic resonance imaging) and brain imaging (neuroimaging).

Volume of procedures performed by Dr. Peter Yi Shen, MD for Medicare patients.

brain imaging (neuroimaging)	13
MRI (magnetic resonance imaging)	13

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Peter Yi Shen, MD.

**Gender**
Male	48
Female	51

**Ethnicity**
Non-Hispanic White	37
Black	0
Hispanic	23
Asian	26
Other	0
Native American	0

**Age**
From 65 to 74	35
From 75 to 84	0
85 and over	0
Less than 65	34

Conditions of Medicare patients treated by Dr. Peter Yi Shen, MD in 2018

Hypertension	66
High Cholesterol	53
Stroke	12
Ischemic Heart Disease	40
Depression	35
Chronic Kidney Disease	51
Asthma	14
Osteoperosis	11
Atrial Fibrilation	0
Heart Failure	24
Chronic Obstructive Pulmonary Disease	15
Diabetes	42
Dementia	15
Cancer	11

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Peter Yi Shen, MD treated as a diagnostic radiologist in Santa Cruz, CA during 2019 were MRI (magnetic resonance imaging), brain imaging (neuroimaging), CT scan and neck imaging.

Volume of procedures performed by Dr. Peter Yi Shen, MD for Medicare patients.

brain imaging (neuroimaging)	14
CT scan	11
MRI (magnetic resonance imaging)	14
neck imaging	11

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Peter Yi Shen, MD.

**Gender**
Male	25
Female	42

**Ethnicity**
Non-Hispanic White	30
Black	0
Hispanic	15
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	19
From 75 to 84	0
85 and over	0
Less than 65	28

Conditions of Medicare patients treated by Dr. Peter Yi Shen, MD in 2019

Hypertension	67
High Cholesterol	66
Stroke	30
Ischemic Heart Disease	43
Depression	27
Chronic Kidney Disease	48
Asthma	0
Osteoperosis	0
Atrial Fibrilation	18
Heart Failure	34
Chronic Obstructive Pulmonary Disease	16
Diabetes	46
Dementia	22
Cancer	0

Medicare Procedure and Patient Information

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Peter Yi Shen, MD.

**Gender**
Male	24
Female	19

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

**Age**
From 65 to 74	21
From 75 to 84	0
85 and over	0
Less than 65	11

Conditions of Medicare patients treated by Dr. Peter Yi Shen, MD in 2020

Hypertension	67
High Cholesterol	56
Stroke	0
Ischemic Heart Disease	42
Depression	0
Chronic Kidney Disease	53
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	33
Chronic Obstructive Pulmonary Disease	0
Diabetes	51
Dementia	26
Cancer	0

Medicare Procedure and Patient Information

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Peter Yi Shen, MD.

**Gender**
Male	38
Female	30

**Ethnicity**
Non-Hispanic White	37
Black	0
Hispanic	0
Asian	14
Other	0
Native American	0

**Age**
From 65 to 74	28
From 75 to 84	0
85 and over	0
Less than 65	20

Conditions of Medicare patients treated by Dr. Peter Yi Shen, MD in 2021

Hypertension	69
High Cholesterol	54
Stroke	24
Ischemic Heart Disease	56
Depression	26
Chronic Kidney Disease	54
Asthma	0
Osteoperosis	0
Atrial Fibrilation	18
Heart Failure	37
Chronic Obstructive Pulmonary Disease	16
Diabetes	41
Dementia	18
Cancer	0

Medicare Procedure and Patient Information

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Peter Yi Shen, MD.

**Gender**
Male	45
Female	55

**Ethnicity**
Non-Hispanic White	43
Black	0
Hispanic	19
Asian	23
Other	0
Native American	0

**Age**
From 65 to 74	46
From 75 to 84	0
85 and over	0
Less than 65	26

Conditions of Medicare patients treated by Dr. Peter Yi Shen, MD in 2022

Hypertension	70
High Cholesterol	54
Stroke	22
Ischemic Heart Disease	35
Depression	26
Chronic Kidney Disease	25
Asthma	22
Osteoperosis	16
Atrial Fibrilation	15
Heart Failure	23
Chronic Obstructive Pulmonary Disease	11
Diabetes	40
Dementia	12
Cancer	0

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. Peter Yi Shen, MD for Medicare patients.

The highest averages for the top procedures that Dr. Peter Yi Shen, MD treated as a diagnostic radiologist in Santa Cruz, CA were spinal procedures, brain imaging (neuroimaging), CT scan and MRI (magnetic resonance imaging).

brain imaging (neuroimaging)	382
CT scan	363
diagnostic procedures	12
eye procedures	13
MRI (magnetic resonance imaging)	297
neck imaging	73
spinal procedures	726
thoracic (chest) imaging	20
vascular procedures	149
X-rays	173

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. Peter Yi Shen, MD.

**Gender**
Male	229
Female	268

**Ethnicity**
Black / African American	46
Asian / Pacific Islander	43
Non-Hispanic White	335
Native American / Alaskan Native	1
Hispanic	49
Other	1

**Age**
75 to 84	107
85 and over	49
Less than 65	134
65 to 74	196

Average of Total of Conditions of Medicare patients treated by Dr. Peter Yi Shen, MD From 2012 - 2022

The highest averages of the most common conditions of Medicare patients that Dr. Peter Yi Shen, MD treated were hypertension, high cholesterol, chronic kidney disease and diabetes.

Hypertension	61
High Cholesterol	49
Stroke	14
Ischemic Heart Disease	36
Depression	24
Chronic Kidney Disease	36
Asthma	9
Osteoporosis	5
Heart Failure	25
Chronic Obstructive Pulmonary Disease	13
Diabetes	36
Atrial Fibrillation	9
Dementia	15
Cancer	5

Education & Training

Dr. Peter Yi Shen, MD graduated from SUNY Downstate Medical Center College of Medicine. He completed residency at SUNY Downstate Medical Center and Affiliated Hospitals. He is certified by the Board Certification: Radiology and has a state license in California.

Medical School: SUNY Downstate Medical Center College of Medicine

Residency: SUNY Downstate Medical Center and Affiliated Hospitals

Board Certification: Board Certification: Radiology

Licensed In: California

Affiliations & Hospitals

Dr. Peter Yi Shen, MD is associated with these hospitals and organizations:

Sutter Health

Insurance Information

Please note: Insurance information may change at any time, and the provider may accept your insurance plan even if it is not listed below. Please contact the provider's office to confirm that your insurance is accepted.

Dr. Peter Yi Shen, MD appears to accept the following insurance providers: Blue Shield of California, Medicare Advantage, HealthSmart, MultiPlan, United Healthcare, TRICARE, Cigna, Alliance PPO, Anthem Blue Cross of California, Private Healthcare Systems (PHCS), Accepted Valley Health Plan Plans: Classic Commercial HMO Plan only, Accepted Central California Alliance for Health Plans: TotalCare (HMO D-SNP), Accepted SCAN Plans: SCAN Compass (HMO), Accepted Santa Clara Family Health Plan Plans: DualConnect (HMO D-SNP), Accepted Provider Networks of America Plans: PPO, Accepted Sutter Health Plan Plans: Individual and Family Plan HMO: Large and Small Group HMO, Accepted Chinese Community Health Plan Plans: Active Choice- PPO Silver: Amber 50 HMO Silver: American Indian/Alaskan Native (Covered CA for Individual & Families): Bronze 60 HDHP HMO (including... and Accepted Aetna Plans: Aetna Choice POS II: Aetna Select EPO: Aetna Select Open Access: Aetna Signature Administrators (ASA): Aetna Student Health Program: Health Fund HMO (aka HMO/HRA): Health Fund....

Insurance Accepted by Provider includes:

According to our sources, Dr. Peter Yi Shen, MD accepts the following insurance providers:

Blue Shield of California

Medicare Advantage

HealthSmart

MultiPlan

United Healthcare

TRICARE

Cigna

Alliance PPO

Anthem Blue Cross of California

Private Healthcare Systems (PHCS)

Accepted Valley Health Plan Plans: Classic Commercial HMO Plan only

Accepted Central California Alliance for Health Plans: TotalCare (HMO D-SNP)

Accepted SCAN Plans: SCAN Compass (HMO)

Accepted Santa Clara Family Health Plan Plans: DualConnect (HMO D-SNP)

Accepted Provider Networks of America Plans: PPO

Accepted Sutter Health Plan Plans: Individual and Family Plan HMO: Large and Small Group HMO

Accepted Chinese Community Health Plan Plans: Active Choice- PPO Silver: Amber 50 HMO Silver: American Indian/Alaskan Native (Covered CA for Individual & Families): Bronze 60 HDHP HMO (including...

Accepted Aetna Plans: Aetna Choice POS II: Aetna Select EPO: Aetna Select Open Access: Aetna Signature Administrators (ASA): Aetna Student Health Program: Health Fund HMO (aka HMO/HRA): Health Fund...

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Biography

Dr. Peter Shen is a specialist in neuroradiology and diagnostic radiology. These areas are among his clinical interests: hepatocellular carcinoma (HCC), hysterosalpingography, and nuclear scan. Anthem, Blue California, and HealthSmart are among the insurance carriers that Dr. Shen honors. Before performing his residency at a hospital affiliated with SUNY Downstate Medical Center, Dr. Shen attended SUNY Downstate Medical Center College of Medicine for medical school. He is professionally affiliated with Sutter Health. According to Sutter Health, Dr. Shen is currently accepting new patients at his office in Santa Cruz, CA.

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Dr. Peter Yi Shen, MD

Office Locations

Some issues Dr. Peter Yi Shen, MD can help you with:

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. Peter Yi Shen, MD in 2013

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

2014 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Peter Yi Shen, MD in 2014

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

2015 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Peter Yi Shen, MD in 2015

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

2016 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Peter Yi Shen, MD in 2016

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

2017 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Peter Yi Shen, MD in 2017

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

2018 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Peter Yi Shen, MD in 2018

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

2019 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Peter Yi Shen, MD in 2019

Medicare Procedure and Patient Information

2020 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Peter Yi Shen, MD in 2020

Medicare Procedure and Patient Information

2021 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Peter Yi Shen, MD in 2021

Medicare Procedure and Patient Information

2022 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Peter Yi Shen, 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. Peter Yi Shen, MD From 2012 - 2022

Education & Training

Affiliations & Hospitals

Insurance Information

Ratings & Reviews

Biography

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