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Dr. Andrew Havens Ramsey Singleton, MD

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Specializes in: General Surgery and Critical Care (Intensive Care Medicine)

Thomas Jefferson University, Jefferson Medical College (2009)

1044 S Fair Oaks Avenue Suite 101
Pasadena, CA 91105

(626) 449-4859

Dr. Andrew Havens Ramsey Singleton, MD is a general surgeon in Pasadena, CA specializing in general surgery and critical care (intensive care medicine). He graduated from Thomas Jefferson University, Jefferson Medical College in 2009 and has 16 years of experience. Dr. Andrew Havens Ramsey Singleton, MD is affiliated with St. Francis Medical Center and DESERT TRAUMA SURGEONS INC.

Office Locations

1044 S Fair Oaks Avenue Suite 101
Pasadena, CA 91105

(626) 449-4859

(626) 403-0321

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St. Francis Medical Center

3628 E. Imperial Highway Suite 408
Lynwood, CA 90262

(310) 554-4127

(310) 554-4197

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1450 San Pablo Street Suite 6200
Los Angeles, CA 90033

(323) 409-7761

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Noteworthy Medicare Patient Procedures Performed by Dr. Andrew Havens Ramsey Singleton, MD in 2023

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

Top 10%

By Volume:

inpatient hospital care

In 2023, Dr. Andrew Havens Ramsey Singleton, MD performed more inpatient hospital care (for patient admitted to hospital) procedures for Medicare patients than 90% of providers in related specialties within California.

Top 25%

By Volume:

abdominal ultrasound

transthoracic echocardiography

ultrasound

In 2013, Dr. Andrew Havens Ramsey Singleton, MD performed more abdominal ultrasound, transthoracic echocardiography (TTE), and ultrasound (sonogram) procedures for Medicare patients than 75% of providers in related specialties within California.

Medicare Procedure and Patient Information

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Andrew Havens Ramsey Singleton, MD.

**Gender**
Male	15
Female	11

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

Conditions of Medicare patients treated by Dr. Andrew Havens Ramsey Singleton, MD in 2017

The most common conditions of Medicare patients that Dr. Andrew Havens Ramsey Singleton, MD treated during 2017 were hypertension, chronic kidney disease, depression and diabetes.

Hypertension	75
High Cholesterol	54
Stroke	0
Ischemic Heart Disease	42
Depression	54
Chronic Kidney Disease	58
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	42
Chronic Obstructive Pulmonary Disease	0
Diabetes	54
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Andrew Havens Ramsey Singleton, MD treated as a general surgeon in Pasadena, CA during 2018 were hospital care and inpatient care.

Volume of procedures performed by Dr. Andrew Havens Ramsey Singleton, MD for Medicare patients.

hospital care	54
inpatient care	54

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Andrew Havens Ramsey Singleton, MD.

**Gender**
Male	73
Female	43

**Ethnicity**
Non-Hispanic White	34
Black	0
Hispanic	52
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	40
From 75 to 84	32
85 and over	18
Less than 65	26

Conditions of Medicare patients treated by Dr. Andrew Havens Ramsey Singleton, MD in 2018

The most common conditions of Medicare patients that Dr. Andrew Havens Ramsey Singleton, MD treated during 2018 were hypertension, chronic kidney disease, ischemic heart disease and high cholesterol.

Hypertension	75
High Cholesterol	54
Stroke	25
Ischemic Heart Disease	55
Depression	25
Chronic Kidney Disease	63
Asthma	0
Osteoperosis	11
Atrial Fibrilation	11
Heart Failure	53
Chronic Obstructive Pulmonary Disease	24
Diabetes	53
Dementia	34
Cancer	11

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Andrew Havens Ramsey Singleton, MD treated as a general surgeon in Pasadena, CA during 2019 were hospital care, inpatient care, ultrasound (sonogram) and thoracic (chest) imaging.

Volume of procedures performed by Dr. Andrew Havens Ramsey Singleton, MD for Medicare patients.

abdominal imaging	14
hospital care	58
inpatient care	58
thoracic (chest) imaging	14
ultrasound (sonogram)	28

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Andrew Havens Ramsey Singleton, MD.

**Gender**
Male	47
Female	41

**Ethnicity**
Non-Hispanic White	36
Black	0
Hispanic	29
Asian	12
Other	0
Native American	0

**Age**
From 65 to 74	26
From 75 to 84	26
85 and over	23
Less than 65	13

Conditions of Medicare patients treated by Dr. Andrew Havens Ramsey Singleton, MD in 2019

The most common conditions of Medicare patients that Dr. Andrew Havens Ramsey Singleton, MD treated during 2019 were hypertension, high cholesterol, ischemic heart disease and chronic kidney disease.

Hypertension	75
High Cholesterol	67
Stroke	28
Ischemic Heart Disease	58
Depression	36
Chronic Kidney Disease	51
Asthma	0
Osteoperosis	0
Atrial Fibrilation	18
Heart Failure	42
Chronic Obstructive Pulmonary Disease	30
Diabetes	51
Dementia	40
Cancer	14

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Andrew Havens Ramsey Singleton, MD treated as a general surgeon in Pasadena, CA during 2020 were hospital care, inpatient care, ultrasound (sonogram) and abdominal imaging.

Volume of procedures performed by Dr. Andrew Havens Ramsey Singleton, MD for Medicare patients.

abdominal imaging	48
hospital care	99
inpatient care	99
thoracic (chest) imaging	24
ultrasound (sonogram)	72

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Andrew Havens Ramsey Singleton, MD.

**Gender**
Male	73
Female	49

**Ethnicity**
Non-Hispanic White	79
Black	0
Hispanic	12
Asian	20
Other	0
Native American	0

**Age**
From 65 to 74	41
From 75 to 84	0
85 and over	38
Less than 65	0

Conditions of Medicare patients treated by Dr. Andrew Havens Ramsey Singleton, MD in 2020

The most common conditions of Medicare patients that Dr. Andrew Havens Ramsey Singleton, MD treated during 2020 were hypertension, high cholesterol, ischemic heart disease and chronic kidney disease.

Hypertension	75
High Cholesterol	66
Stroke	14
Ischemic Heart Disease	61
Depression	43
Chronic Kidney Disease	54
Asthma	12
Osteoperosis	16
Atrial Fibrilation	30
Heart Failure	41
Chronic Obstructive Pulmonary Disease	25
Diabetes	42
Dementia	47
Cancer	19

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Andrew Havens Ramsey Singleton, MD treated as a general surgeon in Pasadena, CA during 2021 were hospital care, inpatient care, ultrasound (sonogram) and abdominal imaging.

Volume of procedures performed by Dr. Andrew Havens Ramsey Singleton, MD for Medicare patients.

abdominal imaging	28
cardiac procedures	13
hospital care	219
inpatient care	219
ultrasound (sonogram)	41

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Andrew Havens Ramsey Singleton, MD.

**Gender**
Male	96
Female	103

**Ethnicity**
Non-Hispanic White	124
Black	0
Hispanic	22
Asian	37
Other	0
Native American	0

**Age**
From 65 to 74	0
From 75 to 84	69
85 and over	80
Less than 65	0

Conditions of Medicare patients treated by Dr. Andrew Havens Ramsey Singleton, MD in 2021

The most common conditions of Medicare patients that Dr. Andrew Havens Ramsey Singleton, MD treated during 2021 were hypertension, high cholesterol, chronic kidney disease and ischemic heart disease.

Hypertension	75
High Cholesterol	71
Stroke	23
Ischemic Heart Disease	57
Depression	33
Chronic Kidney Disease	59
Asthma	0
Osteoperosis	18
Atrial Fibrilation	30
Heart Failure	46
Chronic Obstructive Pulmonary Disease	22
Diabetes	42
Dementia	46
Cancer	15

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Andrew Havens Ramsey Singleton, MD treated as a general surgeon in Pasadena, CA during 2022 were hospital care, inpatient care, ultrasound (sonogram) and abdominal imaging.

Volume of procedures performed by Dr. Andrew Havens Ramsey Singleton, MD for Medicare patients.

abdominal imaging	58
cardiac procedures	34
hospital care	297
inpatient care	297
ultrasound (sonogram)	92

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Andrew Havens Ramsey Singleton, MD.

**Gender**
Male	133
Female	134

**Ethnicity**
Non-Hispanic White	139
Black	20
Hispanic	51
Asian	43
Other	14
Native American	0

**Age**
From 65 to 74	76
From 75 to 84	82
85 and over	85
Less than 65	24

Conditions of Medicare patients treated by Dr. Andrew Havens Ramsey Singleton, MD in 2022

The most common conditions of Medicare patients that Dr. Andrew Havens Ramsey Singleton, MD treated during 2022 were high cholesterol, hypertension, ischemic heart disease and diabetes.

Hypertension	75
High Cholesterol	75
Stroke	32
Ischemic Heart Disease	51
Depression	39
Chronic Kidney Disease	40
Asthma	13
Osteoperosis	22
Atrial Fibrilation	36
Heart Failure	41
Chronic Obstructive Pulmonary Disease	22
Diabetes	48
Dementia	31
Cancer	18

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

The top procedures that Dr. Andrew Havens Ramsey Singleton, MD treated as a general surgeon in Pasadena, CA during 2023 were hospital care, inpatient care, ultrasound (sonogram) and abdominal imaging.

Volume of procedures performed by Dr. Andrew Havens Ramsey Singleton, MD for Medicare patients.

abdominal imaging	87
cardiac procedures	44
emergency care	16
hospital care	314
inpatient care	314
ultrasound (sonogram)	131

2023 Medicare Patient Data

Information about Medicare patients treated by Dr. Andrew Havens Ramsey Singleton, MD.

**Gender**
Male	157
Female	156

**Ethnicity**
Non-Hispanic White	162
Black	26
Hispanic	65
Asian	48
Other	12
Native American	0

**Age**
From 65 to 74	73
From 75 to 84	101
85 and over	108
Less than 65	31

Conditions of Medicare patients treated by Dr. Andrew Havens Ramsey Singleton, MD in 2023

The most common conditions of Medicare patients that Dr. Andrew Havens Ramsey Singleton, MD treated during 2023 were high cholesterol, hypertension, ischemic heart disease and diabetes.

Hypertension	75
High Cholesterol	75
Stroke	35
Ischemic Heart Disease	53
Depression	38
Chronic Kidney Disease	40
Asthma	9
Osteoperosis	24
Atrial Fibrilation	40
Heart Failure	42
Chronic Obstructive Pulmonary Disease	26
Diabetes	52
Dementia	36
Cancer	18

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2017 - 2023

Volume of procedures performed by Dr. Andrew Havens Ramsey Singleton, MD for Medicare patients.

The highest averages for the top procedures that Dr. Andrew Havens Ramsey Singleton, MD treated as a general surgeon in Pasadena, CA were hospital care, inpatient care, ultrasound (sonogram) and abdominal imaging.

abdominal imaging	47
cardiac procedures	30
emergency care	16
hospital care	173
inpatient care	173
thoracic (chest) imaging	19
ultrasound (sonogram)	72

Average Medicare Patient Data From 2017 - 2023

Information about Medicare patients treated by Dr. Andrew Havens Ramsey Singleton, MD.

**Gender**
Male	84
Female	76

**Ethnicity**
Black / African American	6
Asian / Pacific Islander	22
Non-Hispanic White	83
Native American / Alaskan Native	0
Hispanic	33
Other	3

**Age**
75 to 84	44
85 and over	50
Less than 65	13
65 to 74	36

Average of Total of Conditions of Medicare patients treated by Dr. Andrew Havens Ramsey Singleton, MD From 2017 - 2023

The highest averages of the most common conditions of Medicare patients that Dr. Andrew Havens Ramsey Singleton, MD treated were hypertension, high cholesterol, ischemic heart disease and chronic kidney disease.

Hypertension	75
High Cholesterol	66
Stroke	22
Ischemic Heart Disease	53
Depression	38
Chronic Kidney Disease	52
Asthma	4
Osteoporosis	13
Heart Failure	43
Chronic Obstructive Pulmonary Disease	21
Diabetes	48
Atrial Fibrillation	23
Cancer	13
Dementia	33

Education & Training

Dr. Andrew Havens Ramsey Singleton, MD graduated from Thomas Jefferson University, Jefferson Medical College in 2009. He has a state license in California.

Medical School: Thomas Jefferson University, Jefferson Medical College (2009)

Licensed In: California

Affiliations & Hospitals

Dr. Andrew Havens Ramsey Singleton, MD is associated with these hospitals and organizations:

St. Francis Medical Center

DESERT TRAUMA SURGEONS INC

Ratings & Reviews

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General Payments

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

**Payments by Company**
Covidien LP	$29 Situate $29

**Types of Payments**
Food and Beverage	$29

Biography

Dr. Andrew Singleton's areas of specialization are general surgery and critical care (intensive care medicine); he sees patients in Pasadena, CA, Los Angeles, CA, and Lynwood, CA. He is professionally affiliated with St. Francis Medical Center. Dr. Singleton attended medical school at Thomas Jefferson University, Jefferson Medical College.