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Dr. Peter Cawood Butler, MD

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Specializes in: Adult Endocrinology

Professional interests include: diabetes

200 Medical Plaza #365
Los Angeles, CA 90095

(310) 825-7922

Dr. Peter Cawood Butler, MD is an endocrinologist in Los Angeles, CA specializing in adult endocrinology. Dr. Peter Cawood Butler, MD is affiliated with UCLA Health and THE REGENTS OF THE UNIVERSITY OF CALIFORNIA.

Office Locations

200 Medical Plaza #365
Los Angeles, CA 90095

(310) 825-7922

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UCLA Health

862 Aerovista Place Suite 100
San Luis Obispo, CA 93401

(805) 549-8252

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In The News (see more mentions in the news)

“Dr. Peter Butler, a professor of medicine at the University of California, Los Angeles and a consultant to Vertex, said he was awed by the achievement of the Harvard team.”—"People With Severe Diabetes Are Cured in Small Trial of New Drug", New York Times, June 2025

“"It is a remarkable result," Dr. Peter Butler, a diabetes expert at the University of California, Los Angeles, told The New York Times in November.”—"In a new stem cell study, a cure for Type 1 diabetes appears tantalizingly close", Salon, March 2022

“"It is a remarkable result," Dr. Peter Butler, a diabetes expert at the University of California, Los Angeles, said in the report.”—"New testing finds that one man might be the first cured of Type 1 diabetes. What's next for the research?", Desert News, November 2021

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

Volume of procedures performed by Dr. Peter Cawood Butler, MD for Medicare patients.

doctor visit	62

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

Volume of procedures performed by Dr. Peter Cawood Butler, MD for Medicare patients.

doctor visit	82

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Peter Cawood Butler, MD.

**Gender**
Male	29
Female	17

**Age**
From 65 to 74	32
From 75 to 84	0
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Peter Cawood Butler, MD in 2013

Hypertension	54
High Cholesterol	48
Stroke	0
Ischemic Heart Disease	50
Depression	0
Chronic Kidney Disease	28
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	0
Chronic Obstructive Pulmonary Disease	0
Diabetes	75
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

Volume of procedures performed by Dr. Peter Cawood Butler, MD for Medicare patients.

doctor visit	65

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Peter Cawood Butler, MD.

**Gender**
Male	28
Female	19

**Ethnicity**
Non-Hispanic White	32
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	25
From 75 to 84	0
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Peter Cawood Butler, MD in 2014

Hypertension	68
High Cholesterol	53
Stroke	0
Ischemic Heart Disease	53
Depression	0
Chronic Kidney Disease	32
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	0
Chronic Obstructive Pulmonary Disease	0
Diabetes	75
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

Volume of procedures performed by Dr. Peter Cawood Butler, MD for Medicare patients.

doctor visit	65

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Peter Cawood Butler, MD.

**Gender**
Male	70
Female	30

**Ethnicity**
Non-Hispanic White	66
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	56
From 75 to 84	22
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Peter Cawood Butler, MD in 2015

Hypertension	68
High Cholesterol	58
Stroke	0
Ischemic Heart Disease	48
Depression	0
Chronic Kidney Disease	42
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	28
Chronic Obstructive Pulmonary Disease	0
Diabetes	75
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

Volume of procedures performed by Dr. Peter Cawood Butler, MD for Medicare patients.

doctor visit	89

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Peter Cawood Butler, MD.

**Gender**
Male	36
Female	19

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

**Age**
From 65 to 74	27
From 75 to 84	16
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Peter Cawood Butler, MD in 2016

Hypertension	73
High Cholesterol	64
Stroke	0
Ischemic Heart Disease	49
Depression	20
Chronic Kidney Disease	64
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	0
Chronic Obstructive Pulmonary Disease	0
Diabetes	75
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

Volume of procedures performed by Dr. Peter Cawood Butler, MD for Medicare patients.

doctor visit	77

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Peter Cawood Butler, MD.

**Gender**
Male	31
Female	20

**Ethnicity**
Non-Hispanic White	32
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	24
From 75 to 84	0
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Peter Cawood Butler, MD in 2017

Hypertension	75
High Cholesterol	59
Stroke	0
Ischemic Heart Disease	55
Depression	22
Chronic Kidney Disease	61
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	0
Chronic Obstructive Pulmonary Disease	0
Diabetes	75
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

Volume of procedures performed by Dr. Peter Cawood Butler, MD for Medicare patients.

doctor visit	85

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Peter Cawood Butler, MD.

**Gender**
Male	30
Female	18

**Ethnicity**
Non-Hispanic White	32
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	23
From 75 to 84	0
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Peter Cawood Butler, MD in 2018

Hypertension	63
High Cholesterol	58
Stroke	0
Ischemic Heart Disease	52
Depression	0
Chronic Kidney Disease	54
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	0
Chronic Obstructive Pulmonary Disease	0
Diabetes	75
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

Volume of procedures performed by Dr. Peter Cawood Butler, MD for Medicare patients.

doctor visit	76

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Peter Cawood Butler, MD.

**Gender**
Male	33
Female	18

**Ethnicity**
Non-Hispanic White	31
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

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

Conditions of Medicare patients treated by Dr. Peter Cawood Butler, MD in 2019

Hypertension	63
High Cholesterol	57
Stroke	0
Ischemic Heart Disease	53
Depression	0
Chronic Kidney Disease	45
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	0
Chronic Obstructive Pulmonary Disease	0
Diabetes	75
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

Volume of procedures performed by Dr. Peter Cawood Butler, MD for Medicare patients.

doctor visit	80

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Peter Cawood Butler, MD.

**Gender**
Male	33
Female	16

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

**Age**
From 65 to 74	0
From 75 to 84	22
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Peter Cawood Butler, MD in 2020

Hypertension	63
High Cholesterol	53
Stroke	0
Ischemic Heart Disease	53
Depression	0
Chronic Kidney Disease	49
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	22
Chronic Obstructive Pulmonary Disease	0
Diabetes	75
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

Volume of procedures performed by Dr. Peter Cawood Butler, MD for Medicare patients.

doctor visit	79

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Peter Cawood Butler, MD.

**Gender**
Male	33
Female	20

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

**Age**
From 65 to 74	23
From 75 to 84	0
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Peter Cawood Butler, MD in 2021

Hypertension	68
High Cholesterol	68
Stroke	0
Ischemic Heart Disease	58
Depression	0
Chronic Kidney Disease	58
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	25
Chronic Obstructive Pulmonary Disease	0
Diabetes	75
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

Volume of procedures performed by Dr. Peter Cawood Butler, MD for Medicare patients.

doctor visit	111

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Peter Cawood Butler, MD.

**Gender**
Male	34
Female	23

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

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

Conditions of Medicare patients treated by Dr. Peter Cawood Butler, MD in 2022

Hypertension	74
High Cholesterol	75
Stroke	0
Ischemic Heart Disease	44
Depression	0
Chronic Kidney Disease	30
Asthma	0
Osteoperosis	0
Atrial Fibrilation	26
Heart Failure	21
Chronic Obstructive Pulmonary Disease	0
Diabetes	75
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. Peter Cawood Butler, MD for Medicare patients.

doctor visit	79

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. Peter Cawood Butler, MD.

**Gender**
Male	32
Female	18

**Ethnicity**
Black / African American	0
Asian / Pacific Islander	0
Non-Hispanic White	28
Hispanic	0
Native American / Alaskan Native	0
Other	0

**Age**
75 to 84	5
85 and over	0
Less than 65	0
65 to 74	23

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

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

Hypertension	60
High Cholesterol	53
Stroke	0
Ischemic Heart Disease	46
Depression	3
Chronic Kidney Disease	42
Asthma	0
Osteoporosis	0
Heart Failure	8
Chronic Obstructive Pulmonary Disease	0
Diabetes	68
Atrial Fibrillation	2
Cancer	0
Dementia	0

Education & Training

He completed residency at Internship: Medicine, Freeman Hospital. He has a state license in California.

Residency: Internship: Medicine, Freeman Hospital (1984)

Licensed In: California

Affiliations & Hospitals

Dr. Peter Cawood Butler, MD is associated with these hospitals and organizations:

UCLA Health

THE REGENTS OF THE UNIVERSITY OF CALIFORNIA

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 Cawood Butler, MD appears to accept the following insurance providers: Private Healthcare Systems (PHCS), TRICARE, Cigna, Aetna, Blue Shield of California, MultiPlan, Anthem, UnitedHealthcare, Medicare Advantage, Prime Health, First Health, HealthSmart, Health Net of California, Centivo and UFCM Health System.

Insurance Accepted by Provider includes:

According to our sources, Dr. Peter Cawood Butler, MD accepts the following insurance providers:

Private Healthcare Systems (PHCS)

TRICARE

Cigna

Aetna

Blue Shield of California

MultiPlan

Anthem

UnitedHealthcare

Medicare Advantage

Prime Health

First Health

HealthSmart

Health Net of California

Centivo

UFCM Health System

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General Payments

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

**Payments by Company**
Vertex Pharmaceuticals Incorporated	$37,199 $37,199
Takeda Development Center Americas, Inc.	$18,767 $18,767
Genentech, Inc.	$500 NonCovered Product $500
Takeda Pharmaceuticals International, Inc.	$172 $172
Novo Nordisk Inc	$16 Victoza $16

**Types of Payments**
Consulting Fee	$46,954
Travel and Lodging	$8,850
Food and Beverage	$850

Biography

Dr. Peter Butler is a medical specialist in adult endocrinology. Clinical interests for Dr. Butler include diabetes. Anthem, UnitedHealthcare, and Blue California are among the insurance carriers that Dr. Butler honors. He has received the following distinctions: Super Doctors Southern California Super doctors, Southern California; Southern California Super Doctors; and Southern California Super Doctors 2008. He is affiliated with UCLA Health. He has an open panel in San Luis Obispo, CA according to UCLA Health.