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Dr. John Frederick Deeken, MD

Accepting New Patients

(3 Ratings)

Specializes in: Medical Oncology, Adult Oncology and Adult Hematology

8081 Innovation Park Drive 4th Floor
Fairfax, VA 22031

(571) 472-1380

Dr. John Frederick Deeken, MD is a medical oncologist in Fairfax, VA specializing in medical oncology, adult oncology and adult hematology.

Office Locations

8081 Innovation Park Drive 4th Floor
Fairfax, VA 22031

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In The News

“"We're seeing high rates of head and neck cancer, lung cancer, kidney cancer, liver cancer and anal cancer," said John Deeken, director of head and neck oncology at Georgetown University Medical...”—"HIV-positive patients see higher cancer risk", Twin Cities Pioneer Press, May 2010

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

Volume of procedures performed by Dr. John Frederick Deeken, MD for Medicare patients.

doctor visit	227

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

Volume of procedures performed by Dr. John Frederick Deeken, MD for Medicare patients.

doctor visit	112

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. John Frederick Deeken, MD.

**Gender**
Male	31
Female	17

**Ethnicity**
Non-Hispanic White	35
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	21
From 75 to 84	15
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. John Frederick Deeken, MD in 2013

Hypertension	56
High Cholesterol	42
Stroke	0
Ischemic Heart Disease	35
Depression	0
Chronic Kidney Disease	25
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	27
Chronic Obstructive Pulmonary Disease	23
Diabetes	0
Dementia	0
Cancer	38

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

Volume of procedures performed by Dr. John Frederick Deeken, MD for Medicare patients.

doctor visit	122

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. John Frederick Deeken, MD.

**Gender**
Male	32
Female	28

**Age**
From 65 to 74	36
From 75 to 84	0
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. John Frederick Deeken, MD in 2015

Hypertension	57
High Cholesterol	67
Stroke	0
Ischemic Heart Disease	0
Depression	0
Chronic Kidney Disease	0
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	0
Chronic Obstructive Pulmonary Disease	0
Diabetes	0
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

Volume of procedures performed by Dr. John Frederick Deeken, MD for Medicare patients.

doctor visit	163

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. John Frederick Deeken, MD.

**Gender**
Male	22
Female	13

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

Conditions of Medicare patients treated by Dr. John Frederick Deeken, MD in 2016

Hypertension	46
High Cholesterol	63
Stroke	0
Ischemic Heart Disease	0
Depression	0
Chronic Kidney Disease	31
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	0
Chronic Obstructive Pulmonary Disease	0
Diabetes	31
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. John Frederick Deeken, MD treated as a medical oncologist in Fairfax, VA during 2017 were lab tests.

Volume of procedures performed by Dr. John Frederick Deeken, MD for Medicare patients.

doctor visit	140
lab tests	28

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. John Frederick Deeken, MD.

**Gender**
Male	32
Female	14

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

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

Conditions of Medicare patients treated by Dr. John Frederick Deeken, MD in 2017

Hypertension	63
High Cholesterol	50
Stroke	0
Ischemic Heart Disease	28
Depression	30
Chronic Kidney Disease	30
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	0
Chronic Obstructive Pulmonary Disease	0
Diabetes	33
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. John Frederick Deeken, MD treated as a medical oncologist in Fairfax, VA during 2018 were lab tests, hospital care and inpatient care.

Volume of procedures performed by Dr. John Frederick Deeken, MD for Medicare patients.

doctor visit	204
hospital care	55
inpatient care	55
lab tests	88

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. John Frederick Deeken, MD.

**Gender**
Male	56
Female	43

**Ethnicity**
Non-Hispanic White	63
Black	11
Hispanic	0
Asian	11
Other	0
Native American	0

**Age**
From 65 to 74	46
From 75 to 84	38
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. John Frederick Deeken, MD in 2018

Hypertension	72
High Cholesterol	54
Stroke	0
Ischemic Heart Disease	37
Depression	27
Chronic Kidney Disease	51
Asthma	0
Osteoperosis	0
Atrial Fibrilation	22
Heart Failure	19
Chronic Obstructive Pulmonary Disease	19
Diabetes	36
Dementia	14
Cancer	32

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. John Frederick Deeken, MD treated as a medical oncologist in Fairfax, VA during 2019 were hospital care, inpatient care and lab tests.

Volume of procedures performed by Dr. John Frederick Deeken, MD for Medicare patients.

doctor visit	248
hospital care	43
inpatient care	43
lab tests	38

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. John Frederick Deeken, MD.

**Gender**
Male	63
Female	46

**Ethnicity**
Non-Hispanic White	78
Black	0
Hispanic	0
Asian	12
Other	0
Native American	0

**Age**
From 65 to 74	56
From 75 to 84	39
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. John Frederick Deeken, MD in 2019

Hypertension	67
High Cholesterol	66
Stroke	0
Ischemic Heart Disease	43
Depression	28
Chronic Kidney Disease	44
Asthma	10
Osteoperosis	0
Atrial Fibrilation	11
Heart Failure	14
Chronic Obstructive Pulmonary Disease	12
Diabetes	35
Dementia	16
Cancer	39

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

Volume of procedures performed by Dr. John Frederick Deeken, MD for Medicare patients.

doctor visit	227

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. John Frederick Deeken, MD.

**Gender**
Male	52
Female	22

**Ethnicity**
Non-Hispanic White	61
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

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

Conditions of Medicare patients treated by Dr. John Frederick Deeken, MD in 2020

Hypertension	59
High Cholesterol	54
Stroke	0
Ischemic Heart Disease	42
Depression	18
Chronic Kidney Disease	39
Asthma	0
Osteoperosis	0
Atrial Fibrilation	15
Heart Failure	19
Chronic Obstructive Pulmonary Disease	18
Diabetes	28
Dementia	15
Cancer	20

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

Volume of procedures performed by Dr. John Frederick Deeken, MD for Medicare patients.

doctor visit	249

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. John Frederick Deeken, MD.

**Gender**
Male	45
Female	17

**Ethnicity**
Non-Hispanic White	49
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

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

Conditions of Medicare patients treated by Dr. John Frederick Deeken, MD in 2021

Hypertension	63
High Cholesterol	56
Stroke	0
Ischemic Heart Disease	37
Depression	0
Chronic Kidney Disease	35
Asthma	0
Osteoperosis	0
Atrial Fibrilation	18
Heart Failure	0
Chronic Obstructive Pulmonary Disease	0
Diabetes	21
Dementia	0
Cancer	23

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

Volume of procedures performed by Dr. John Frederick Deeken, MD for Medicare patients.

doctor visit	250

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. John Frederick Deeken, MD.

**Gender**
Male	56
Female	18

**Ethnicity**
Non-Hispanic White	56
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

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

Conditions of Medicare patients treated by Dr. John Frederick Deeken, MD in 2022

Hypertension	66
High Cholesterol	70
Stroke	0
Ischemic Heart Disease	26
Depression	19
Chronic Kidney Disease	15
Asthma	0
Osteoperosis	0
Atrial Fibrilation	26
Heart Failure	15
Chronic Obstructive Pulmonary Disease	22
Diabetes	23
Dementia	0
Cancer	26

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. John Frederick Deeken, MD for Medicare patients.

The highest averages for the top procedures that Dr. John Frederick Deeken, MD treated as a medical oncologist in Fairfax, VA were lab tests, hospital care and inpatient care.

doctor visit	194
hospital care	49
inpatient care	49
lab tests	51

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. John Frederick Deeken, MD.

**Gender**
Male	38
Female	21

**Ethnicity**
Black / African American	1
Asian / Pacific Islander	2
Non-Hispanic White	37
Native American / Alaskan Native	0
Hispanic	0
Other	0

**Age**
75 to 84	9
85 and over	0
Less than 65	0
65 to 74	32

Average of Total of Conditions of Medicare patients treated by Dr. John Frederick Deeken, MD From 2012 - 2022

The highest averages of the most common conditions of Medicare patients that Dr. John Frederick Deeken, MD treated were hypertension, high cholesterol, chronic kidney disease and ischemic heart disease.

Hypertension	54
High Cholesterol	52
Stroke	0
Ischemic Heart Disease	24
Depression	12
Chronic Kidney Disease	27
Asthma	1
Osteoporosis	0
Heart Failure	9
Chronic Obstructive Pulmonary Disease	9
Diabetes	20
Atrial Fibrillation	9
Cancer	17
Dementia	4

Education & Training

He has a state license in District of Columbia.

Licensed In: District of Columbia

Ratings & Reviews

Dr. John Frederick Deeken, MD has an exceptional overall rating with an average of 5.0 out of 5 stars based on 3 ratings. We collect ratings and reviews of Dr. John Frederick Deeken, MD from all over the web to help you find the right in Fairfax, VA.

Overall Rating

(3 Ratings)

Leave a Review

Reviews From Around The Web

Overall Rating: 5.0 2025-11-19

Patient verified via Press Ganey

Dr Deekin is the BEST! He & Dr Bajaj and their entire team at INOVA are my heroes! They saved my life..you and I are lucky they are there!

Overall Rating: 5.0 2026-01-17

Patient verified via Press Ganey

Dr. Deeken has provided superior care across all categories for the entire year I've been under his care.

Overall Rating: 5.0 2025-05-12

Patient verified via Press Ganey

Wonderful experience!

General Payments

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

**Payments by Company**
Merck Sharp & Dohme Corporation	$1,117 KEYTRUDA $1,117
Philips Electronics North America Corporation	$197 Oncology $197
Incyte Corporation	$180 $180
Sirtex Medical Inc	$132 SIR-Spheres microspheres $132
Boston Scientific Corporation	$14 LUX DX $14

**Types of Payments**
Travel and Lodging	$840
Food and Beverage	$621
Education	$180

Research Payments

Dr. John Frederick Deeken, MD has received 238 research payments totaling $1,440,979.

Biography

Dr. John Deeken practices adult hematology, adult oncology, and medical oncology. He graduated from Georgetown University School of Medicine. Patients gave Dr. Deeken an average rating of 5.0 stars (out of 5). He welcomes new patients at his office inFairfax, VA as reported by Doctor.com.

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Dr. John Frederick Deeken, MD

Office Locations

In The News

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. John Frederick Deeken, MD in 2013

Medicare Procedure and Patient Information

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

2015 Medicare Patient Data

Conditions of Medicare patients treated by Dr. John Frederick Deeken, MD in 2015

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

2016 Medicare Patient Data

Conditions of Medicare patients treated by Dr. John Frederick Deeken, MD in 2016

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

2017 Medicare Patient Data

Conditions of Medicare patients treated by Dr. John Frederick Deeken, MD in 2017

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

2018 Medicare Patient Data

Conditions of Medicare patients treated by Dr. John Frederick Deeken, MD in 2018

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

2019 Medicare Patient Data

Conditions of Medicare patients treated by Dr. John Frederick Deeken, MD in 2019

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

2020 Medicare Patient Data

Conditions of Medicare patients treated by Dr. John Frederick Deeken, MD in 2020

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

2021 Medicare Patient Data

Conditions of Medicare patients treated by Dr. John Frederick Deeken, MD in 2021

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

2022 Medicare Patient Data

Conditions of Medicare patients treated by Dr. John Frederick Deeken, 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. John Frederick Deeken, MD From 2012 - 2022

Education & Training

Ratings & Reviews

General Payments

Research Payments

Biography

Other Providers in Fairfax, VA