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Home > MA Providers > Neurosurgeons

Dr. Daniel P. Cahill, MD PHD

(Daniel Cahill, MD)

(94 Ratings)

Specializes in: Neurosurgery and Neuro-Oncology

Johns Hopkins University School of Medicine

Professional interests include: cancer, meningioma, sarcoma (bone and soft tissue cancer), and more.

55 Fruit Street
Boston, MA 02114

(617) 724-0884

Dr. Daniel P. Cahill, MD PHD is a neurosurgeon in Boston, MA specializing in neurosurgery and neuro-oncology. He graduated from Johns Hopkins University School of Medicine. Dr. Daniel P. Cahill, MD PHD is affiliated with Massachusetts General Hospital and Mass General Cancer Center: Neuro-Oncology.

Office Locations

55 Fruit Street
Boston, MA 02114

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Noteworthy Medicare Patient Procedures Performed by Dr. Daniel P. Cahill, MD PHD in 2024

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

Top 5%

By Affordability:

cranial radiosurgery

external beam radiation therapy

stereotactic radiosurgery

In 2024, Dr. Daniel P. Cahill, MD PHD had a list price for cranial radiosurgery, external beam radiation therapy (EBRT), and stereotactic radiosurgery (SRS) that was lower than the list prices billed to Medicare by 95% of providers in related specialties within Massachusetts. 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.

Top 25%

By Volume:

image guided procedures

In 2012, Dr. Daniel P. Cahill, MD PHD performed more image guided procedures procedures for Medicare patients than 75% of providers in related specialties within Massachusetts.

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. Daniel P. Cahill, MD PHD treated as a neurosurgeon in Boston, MA during 2012 were removal of lesion (e.g. growth), cranial surgery and excision.

Volume of procedures performed by Dr. Daniel P. Cahill, MD PHD for Medicare patients.

cranial surgery	30
doctor visit	14
excision	30
removal of lesion (e.g. growth)	30

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Daniel P. Cahill, MD PHD treated as a neurosurgeon in Boston, MA during 2013 were removal of lesion (e.g. growth), cranial surgery and excision.

Volume of procedures performed by Dr. Daniel P. Cahill, MD PHD for Medicare patients.

cranial surgery	16
doctor visit	19
excision	16
removal of lesion (e.g. growth)	16

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Daniel P. Cahill, MD PHD.

**Gender**
Male	31
Female	41

**Age**
From 65 to 74	35
From 75 to 84	19
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Daniel P. Cahill, MD PHD in 2013

Hypertension	64
High Cholesterol	64
Stroke	19
Ischemic Heart Disease	26
Depression	33
Chronic Kidney Disease	26
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	21
Chronic Obstructive Pulmonary Disease	0
Diabetes	19
Dementia	0
Cancer	24

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Daniel P. Cahill, MD PHD treated as a neurosurgeon in Boston, MA during 2014 were removal of lesion (e.g. growth), cranial surgery and excision.

Volume of procedures performed by Dr. Daniel P. Cahill, MD PHD for Medicare patients.

cranial surgery	18
excision	18
removal of lesion (e.g. growth)	18

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Daniel P. Cahill, MD PHD.

**Gender**
Male	30
Female	39

**Age**
From 65 to 74	30
From 75 to 84	23
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Daniel P. Cahill, MD PHD in 2014

Hypertension	75
High Cholesterol	64
Stroke	28
Ischemic Heart Disease	39
Depression	43
Chronic Kidney Disease	33
Asthma	17
Osteoperosis	17
Atrial Fibrilation	0
Heart Failure	0
Chronic Obstructive Pulmonary Disease	17
Diabetes	22
Dementia	0
Cancer	35

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Daniel P. Cahill, MD PHD treated as a neurosurgeon in Boston, MA during 2015 were removal of lesion (e.g. growth), cranial surgery and excision.

Volume of procedures performed by Dr. Daniel P. Cahill, MD PHD for Medicare patients.

cranial surgery	27
doctor visit	26
excision	27
removal of lesion (e.g. growth)	27

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Daniel P. Cahill, MD PHD.

**Gender**
Male	70
Female	74

**Age**
From 65 to 74	86
From 75 to 84	30
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Daniel P. Cahill, MD PHD in 2015

Hypertension	75
High Cholesterol	63
Stroke	31
Ischemic Heart Disease	31
Depression	43
Chronic Kidney Disease	35
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	24
Chronic Obstructive Pulmonary Disease	21
Diabetes	26
Dementia	18
Cancer	32

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Daniel P. Cahill, MD PHD treated as a neurosurgeon in Boston, MA during 2016 were removal of lesion (e.g. growth), cranial surgery, excision and hospital care.

Volume of procedures performed by Dr. Daniel P. Cahill, MD PHD for Medicare patients.

cranial surgery	28
doctor visit	13
excision	28
hospital care	14
inpatient care	14
removal of lesion (e.g. growth)	28

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Daniel P. Cahill, MD PHD.

**Gender**
Male	35
Female	36

**Age**
From 65 to 74	39
From 75 to 84	19
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Daniel P. Cahill, MD PHD in 2016

Hypertension	75
High Cholesterol	61
Stroke	35
Ischemic Heart Disease	39
Depression	41
Chronic Kidney Disease	32
Asthma	21
Osteoperosis	15
Atrial Fibrilation	0
Heart Failure	23
Chronic Obstructive Pulmonary Disease	0
Diabetes	15
Dementia	18
Cancer	27

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Daniel P. Cahill, MD PHD treated as a neurosurgeon in Boston, MA during 2017 were hospital care, inpatient care, removal of lesion (e.g. growth) and cranial surgery.

Volume of procedures performed by Dr. Daniel P. Cahill, MD PHD for Medicare patients.

cranial surgery	17
excision	17
hospital care	27
inpatient care	27
removal of lesion (e.g. growth)	17

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Daniel P. Cahill, MD PHD.

**Gender**
Male	44
Female	41

**Age**
From 65 to 74	39
From 75 to 84	25
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Daniel P. Cahill, MD PHD in 2017

Hypertension	75
High Cholesterol	54
Stroke	27
Ischemic Heart Disease	39
Depression	41
Chronic Kidney Disease	36
Asthma	0
Osteoperosis	0
Atrial Fibrilation	15
Heart Failure	16
Chronic Obstructive Pulmonary Disease	18
Diabetes	24
Dementia	22
Cancer	35

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Daniel P. Cahill, MD PHD treated as a neurosurgeon in Boston, MA during 2018 were hospital care, inpatient care, removal of lesion (e.g. growth) and cranial surgery.

Volume of procedures performed by Dr. Daniel P. Cahill, MD PHD for Medicare patients.

cranial surgery	25
doctor visit	17
excision	25
hospital care	27
inpatient care	27
removal of lesion (e.g. growth)	25

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Daniel P. Cahill, MD PHD.

**Gender**
Male	44
Female	47

**Age**
From 65 to 74	31
From 75 to 84	32
85 and over	11
Less than 65	17

Conditions of Medicare patients treated by Dr. Daniel P. Cahill, MD PHD in 2018

Hypertension	75
High Cholesterol	73
Stroke	37
Ischemic Heart Disease	51
Depression	41
Chronic Kidney Disease	44
Asthma	0
Osteoperosis	0
Atrial Fibrilation	15
Heart Failure	25
Chronic Obstructive Pulmonary Disease	14
Diabetes	20
Dementia	35
Cancer	34

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Daniel P. Cahill, MD PHD treated as a neurosurgeon in Boston, MA during 2019 were removal of lesion (e.g. growth), hospital care, cranial surgery and inpatient care.

Volume of procedures performed by Dr. Daniel P. Cahill, MD PHD for Medicare patients.

cranial surgery	12
excision	12
hospital care	12
inpatient care	12
removal of lesion (e.g. growth)	12

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Daniel P. Cahill, MD PHD.

**Gender**
Male	26
Female	29

**Age**
From 65 to 74	30
From 75 to 84	12
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Daniel P. Cahill, MD PHD in 2019

Hypertension	71
High Cholesterol	51
Stroke	25
Ischemic Heart Disease	33
Depression	40
Chronic Kidney Disease	31
Asthma	0
Osteoperosis	0
Atrial Fibrilation	25
Heart Failure	0
Chronic Obstructive Pulmonary Disease	0
Diabetes	0
Dementia	20
Cancer	40

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Daniel P. Cahill, MD PHD treated as a neurosurgeon in Boston, MA during 2020 were radiation therapy, image guided procedures, hospital care and inpatient care.

Volume of procedures performed by Dr. Daniel P. Cahill, MD PHD for Medicare patients.

cranial surgery	15
excision	15
hospital care	19
image guided procedures	53
inpatient care	19
radiation therapy	53
removal of lesion (e.g. growth)	15

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Daniel P. Cahill, MD PHD.

**Gender**
Male	34
Female	45

**Age**
From 65 to 74	51
From 75 to 84	0
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Daniel P. Cahill, MD PHD in 2020

Hypertension	65
High Cholesterol	48
Stroke	20
Ischemic Heart Disease	42
Depression	28
Chronic Kidney Disease	35
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	14
Chronic Obstructive Pulmonary Disease	18
Diabetes	27
Dementia	0
Cancer	48

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Daniel P. Cahill, MD PHD treated as a neurosurgeon in Boston, MA during 2021 were radiation therapy, image guided procedures, removal of lesion (e.g. growth) and cranial surgery.

Volume of procedures performed by Dr. Daniel P. Cahill, MD PHD for Medicare patients.

cranial surgery	31
excision	31
hospital care	27
image guided procedures	54
inpatient care	27
radiation therapy	54
removal of lesion (e.g. growth)	31

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Daniel P. Cahill, MD PHD.

**Gender**
Male	57
Female	57

**Ethnicity**
Non-Hispanic White	100
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	56
From 75 to 84	41
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Daniel P. Cahill, MD PHD in 2021

Hypertension	69
High Cholesterol	58
Stroke	28
Ischemic Heart Disease	26
Depression	29
Chronic Kidney Disease	34
Asthma	11
Osteoperosis	14
Atrial Fibrilation	15
Heart Failure	18
Chronic Obstructive Pulmonary Disease	21
Diabetes	18
Dementia	17
Cancer	55

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Daniel P. Cahill, MD PHD treated as a neurosurgeon in Boston, MA during 2022 were radiation therapy, image guided procedures, removal of lesion (e.g. growth) and cranial surgery.

Volume of procedures performed by Dr. Daniel P. Cahill, MD PHD for Medicare patients.

cranial surgery	18
doctor visit	13
excision	18
image guided procedures	35
radiation therapy	35
removal of lesion (e.g. growth)	18

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Daniel P. Cahill, MD PHD.

**Gender**
Male	30
Female	53

**Age**
From 65 to 74	41
From 75 to 84	28
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Daniel P. Cahill, MD PHD in 2022

Hypertension	65
High Cholesterol	65
Stroke	33
Ischemic Heart Disease	18
Depression	29
Chronic Kidney Disease	17
Asthma	0
Osteoperosis	19
Atrial Fibrilation	17
Heart Failure	16
Chronic Obstructive Pulmonary Disease	22
Diabetes	18
Dementia	0
Cancer	57

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

The top procedures that Dr. Daniel P. Cahill, MD PHD treated as a neurosurgeon in Boston, MA during 2023 were radiation therapy, image guided procedures, hospital care and inpatient care.

Volume of procedures performed by Dr. Daniel P. Cahill, MD PHD for Medicare patients.

cranial surgery	16
doctor visit	22
excision	16
hospital care	18
image guided procedures	26
inpatient care	18
radiation therapy	26
removal of lesion (e.g. growth)	16

2023 Medicare Patient Data

Information about Medicare patients treated by Dr. Daniel P. Cahill, MD PHD.

**Gender**
Male	45
Female	45

**Age**
From 65 to 74	53
From 75 to 84	0
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Daniel P. Cahill, MD PHD in 2023

Hypertension	75
High Cholesterol	74
Stroke	36
Ischemic Heart Disease	29
Depression	32
Chronic Kidney Disease	32
Asthma	0
Osteoperosis	28
Atrial Fibrilation	20
Heart Failure	16
Chronic Obstructive Pulmonary Disease	20
Diabetes	30
Dementia	0
Cancer	47

Medicare Procedure and Patient Information

2024 Medicare Procedure Volume

The top procedures that Dr. Daniel P. Cahill, MD PHD treated as a neurosurgeon in Boston, MA during 2024 were radiation therapy, image guided procedures, removal of lesion (e.g. growth) and cranial surgery.

Volume of procedures performed by Dr. Daniel P. Cahill, MD PHD for Medicare patients.

cranial surgery	12
doctor visit	12
excision	12
hospital care	11
image guided procedures	32
inpatient care	11
radiation therapy	32
removal of lesion (e.g. growth)	12

2024 Medicare Patient Data

Information about Medicare patients treated by Dr. Daniel P. Cahill, MD PHD.

**Gender**
Male	38
Female	50

**Age**
From 65 to 74	43
From 75 to 84	31
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Daniel P. Cahill, MD PHD in 2024

Hypertension	74
High Cholesterol	75
Stroke	35
Ischemic Heart Disease	22
Depression	32
Chronic Kidney Disease	25
Asthma	0
Osteoperosis	18
Atrial Fibrilation	20
Heart Failure	0
Chronic Obstructive Pulmonary Disease	16
Diabetes	23
Dementia	0
Cancer	50

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2024

Volume of procedures performed by Dr. Daniel P. Cahill, MD PHD for Medicare patients.

The highest averages for the top procedures that Dr. Daniel P. Cahill, MD PHD treated as a neurosurgeon in Boston, MA were radiation therapy, image guided procedures, removal of lesion (e.g. growth) and cranial surgery.

cranial surgery	20
doctor visit	17
excision	20
hospital care	19
image guided procedures	40
inpatient care	19
radiation therapy	40
removal of lesion (e.g. growth)	20

Average Medicare Patient Data From 2012 - 2024

Information about Medicare patients treated by Dr. Daniel P. Cahill, MD PHD.

**Gender**
Male	37
Female	42

**Ethnicity**
Black / African American	0
Asian / Pacific Islander	0
Non-Hispanic White	7
Native American / Alaskan Native	0
Hispanic	0
Other	0

**Age**
75 to 84	20
85 and over	0
Less than 65	1
65 to 74	41

Average of Total of Conditions of Medicare patients treated by Dr. Daniel P. Cahill, MD PHD From 2012 - 2024

The highest averages of the most common conditions of Medicare patients that Dr. Daniel P. Cahill, MD PHD treated were hypertension, high cholesterol, cancer and depression.

Hypertension	66
High Cholesterol	57
Stroke	27
Ischemic Heart Disease	30
Depression	33
Chronic Kidney Disease	29
Asthma	3
Osteoporosis	8
Heart Failure	13
Chronic Obstructive Pulmonary Disease	12
Diabetes	18
Atrial Fibrillation	9
Cancer	37
Dementia	10

Education & Training

Dr. Daniel P. Cahill, MD PHD graduated from Johns Hopkins University School of Medicine. He completed residency at Massachusetts General Hospital. He is certified by the Neurological Surgery, American Board of Neurological Surgery and has a state license in Massachusetts.

Medical School: Johns Hopkins University School of Medicine

Residency: Massachusetts General Hospital

Board Certification: Neurological Surgery, American Board of Neurological Surgery

Licensed In: Massachusetts

Affiliations & Hospitals

Dr. Daniel P. Cahill, MD PHD is associated with these hospitals and organizations:

Massachusetts General Hospital

Mass General Cancer Center: Neuro-Oncology

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. Daniel P. Cahill, MD PHD appears to accept the following insurance providers: Harvard Pilgrim Health Care, MultiPlan, United Healthcare, Tufts Health Plan, Aetna, TRICARE, Medicare, Medicaid, Humana, Railroad Medicare, Coventry, Cigna, Blue California, Beech Street, WellPoint, WellSense, Senior Whole Health, Fallon Health, Commonwealth Care Alliance, Blue Cross Blue Shield Medicare, Maine Community Health Options, Mass General Brigham Health Plan, MassHealth and WellSense NH.

Insurance Accepted by Provider includes:

According to our sources, Dr. Daniel P. Cahill, MD PHD accepts the following insurance providers:

Harvard Pilgrim Health Care

MultiPlan

United Healthcare

Tufts Health Plan

Aetna

TRICARE

Medicare

Medicaid

Humana

Railroad Medicare

Coventry

Cigna

Blue California

Beech Street

WellPoint

WellSense

Senior Whole Health

Fallon Health

Commonwealth Care Alliance

Blue Cross Blue Shield Medicare

Maine Community Health Options

Mass General Brigham Health Plan

MassHealth

WellSense NH

Ratings & Reviews

Dr. Daniel P. Cahill, MD PHD has an exceptional overall rating with an average of 4.97 out of 5 stars based on 94 ratings. We collect ratings and reviews of Dr. Daniel P. Cahill, MD PHD from all over the web to help you find the right in Boston, MA.

4.97

Overall Rating

(94 Ratings)

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General Payments

These charts describe general payments received by Dr. Daniel P. Cahill, MD PHD. Doctors may receive payments for a number of reasons, including meal compensation, travel compensation, and consulting.

**Payments by Company**
Merck Sharp & Dohme Corporation	$25,059 NON-PRODUCT $13,948	TEMODAR $521	$10,590
Servier Pharmaceuticals LLC	$10,327 $10,327
Eli Lilly and Company	$6,358 $6,358
Boston Scientific Corporation	$5,100 $5,100
GlaxoSmithKline, LLC.	$2,600 $2,600
Other	$89 NON BRAND $73	ZEJULA $16

**Types of Payments**
Consulting Fee	$24,314
Travel and Lodging	$13,536
Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program	$11,375
Food and Beverage	$308

Biography

Dr. Daniel Cahill sees patients in Boston, MA. His medical specialties are neurosurgery and neuro-oncology. He is a graduate of Johns Hopkins University School of Medicine. For his professional training, Dr. Cahill completed a residency program at Massachusetts General Hospital. In Dr. Cahill's practice, he is particularly interested in connective tissue disorders, sarcoma (bone and soft tissue cancer), and meningioma. His patients gave him an average rating of 5.0 stars (out of 5). He accepts Blue California, Coventry, and Viant, in addition to other insurance carriers. Dr. Cahill is affiliated with Massachusetts General Hospital.