Procedure Volume Patient Data Patient Conditions Reviews General Payments Back to Top

Home > MA Providers > Family Physicians & Family Medicine Specialists

Dr. John Marshall King, MD

(3 Ratings)

Specializes in: Family Medicine

1 Park Way
Haverhill, MA 01830

(978) 521-3200

Dr. John Marshall King, MD is a family medicine practitioner in Haverhill, MA specializing in family medicine.

Office Locations

1 Park Way
Haverhill, MA 01830

(978) 521-3200

(978) 557-8798

open_in_new

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. John Marshall King, MD treated as a family medicine practitioner in Haverhill, MA during 2012 were lab tests, preventive care, blood draw and thyroid function tests.

Volume of procedures performed by Dr. John Marshall King, MD for Medicare patients.

blood draw	263
diabetes management	81
doctor visit	499
lab tests	997
preventive care	268
thyroid function tests	196
vaccines	53

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. John Marshall King, MD treated as a family medicine practitioner in Haverhill, MA during 2013 were lab tests, preventive care, blood draw and thyroid function tests.

Volume of procedures performed by Dr. John Marshall King, MD for Medicare patients.

anorectal procedures	28
blood draw	297
diabetes management	82
doctor visit	460
lab tests	1054
preventive care	346
thyroid function tests	203
vaccines	51

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. John Marshall King, MD.

**Gender**
Male	85
Female	82

**Ethnicity**
Non-Hispanic White	136
Black	12
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	75
From 75 to 84	37
85 and over	13
Less than 65	42

Conditions of Medicare patients treated by Dr. John Marshall King, MD in 2013

Hypertension	65
High Cholesterol	60
Stroke	0
Ischemic Heart Disease	27
Depression	28
Chronic Kidney Disease	28
Asthma	11
Osteoperosis	13
Atrial Fibrilation	7
Heart Failure	13
Chronic Obstructive Pulmonary Disease	17
Diabetes	35
Dementia	9
Cancer	9

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. John Marshall King, MD treated as a family medicine practitioner in Haverhill, MA during 2014 were lab tests, preventive care, blood draw and thyroid function tests.

Volume of procedures performed by Dr. John Marshall King, MD for Medicare patients.

anorectal procedures	24
blood draw	344
diabetes management	96
doctor visit	376
lab tests	1013
preventive care	385
thyroid function tests	221
vaccines	67

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. John Marshall King, MD.

**Gender**
Male	92
Female	80

**Ethnicity**
Non-Hispanic White	133
Black	17
Hispanic	0
Asian	0
Other	0
Native American	0

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

Conditions of Medicare patients treated by Dr. John Marshall King, MD in 2014

Hypertension	69
High Cholesterol	57
Stroke	0
Ischemic Heart Disease	31
Depression	23
Chronic Kidney Disease	27
Asthma	10
Osteoperosis	8
Atrial Fibrilation	9
Heart Failure	13
Chronic Obstructive Pulmonary Disease	18
Diabetes	41
Dementia	8
Cancer	10

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. John Marshall King, MD treated as a family medicine practitioner in Haverhill, MA during 2015 were lab tests, blood draw, preventive care and thyroid function tests.

Volume of procedures performed by Dr. John Marshall King, MD for Medicare patients.

blood draw	330
diabetes management	98
doctor visit	398
lab tests	842
preventive care	309
thyroid function tests	167
vaccines	68

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. John Marshall King, MD.

**Gender**
Male	186
Female	122

**Ethnicity**
Non-Hispanic White	238
Black	28
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	130
From 75 to 84	96
85 and over	24
Less than 65	58

Conditions of Medicare patients treated by Dr. John Marshall King, MD in 2015

Hypertension	65
High Cholesterol	51
Stroke	0
Ischemic Heart Disease	33
Depression	21
Chronic Kidney Disease	23
Asthma	11
Osteoperosis	10
Atrial Fibrilation	10
Heart Failure	16
Chronic Obstructive Pulmonary Disease	17
Diabetes	38
Dementia	10
Cancer	10

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. John Marshall King, MD treated as a family medicine practitioner in Haverhill, MA during 2016 were lab tests, blood draw, preventive care and thyroid function tests.

Volume of procedures performed by Dr. John Marshall King, MD for Medicare patients.

blood draw	320
diabetes management	102
doctor visit	315
lab tests	731
preventive care	266
thyroid function tests	116
vaccines	55

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. John Marshall King, MD.

**Gender**
Male	100
Female	60

**Ethnicity**
Non-Hispanic White	125
Black	14
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	69
From 75 to 84	50
85 and over	11
Less than 65	30

Conditions of Medicare patients treated by Dr. John Marshall King, MD in 2016

Hypertension	72
High Cholesterol	54
Stroke	0
Ischemic Heart Disease	31
Depression	13
Chronic Kidney Disease	21
Asthma	18
Osteoperosis	0
Atrial Fibrilation	10
Heart Failure	16
Chronic Obstructive Pulmonary Disease	16
Diabetes	35
Dementia	10
Cancer	9

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. John Marshall King, MD treated as a family medicine practitioner in Haverhill, MA during 2017 were lab tests, blood draw, preventive care and diabetes management.

Volume of procedures performed by Dr. John Marshall King, MD for Medicare patients.

blood draw	260
diabetes management	83
doctor visit	257
lab tests	592
preventive care	238
thyroid function tests	75
vaccines	60

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. John Marshall King, MD.

**Gender**
Male	94
Female	49

**Ethnicity**
Non-Hispanic White	112
Black	14
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	59
From 75 to 84	48
85 and over	11
Less than 65	25

Conditions of Medicare patients treated by Dr. John Marshall King, MD in 2017

Hypertension	73
High Cholesterol	42
Stroke	0
Ischemic Heart Disease	27
Depression	15
Chronic Kidney Disease	21
Asthma	0
Osteoperosis	0
Atrial Fibrilation	12
Heart Failure	12
Chronic Obstructive Pulmonary Disease	14
Diabetes	33
Dementia	10
Cancer	9

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. John Marshall King, MD treated as a family medicine practitioner in Haverhill, MA during 2018 were lab tests, blood draw, preventive care and diabetes management.

Volume of procedures performed by Dr. John Marshall King, MD for Medicare patients.

blood draw	73
diabetes management	26
doctor visit	61
lab tests	181
preventive care	67
thyroid function tests	18

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. John Marshall King, MD.

**Gender**
Male	51
Female	23

**Ethnicity**
Non-Hispanic White	53
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	30
From 75 to 84	27
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. John Marshall King, MD in 2018

Hypertension	75
High Cholesterol	74
Stroke	0
Ischemic Heart Disease	36
Depression	27
Chronic Kidney Disease	30
Asthma	0
Osteoperosis	0
Atrial Fibrilation	15
Heart Failure	22
Chronic Obstructive Pulmonary Disease	26
Diabetes	51
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

Volume of procedures performed by Dr. John Marshall King, MD for Medicare patients.

doctor visit	79

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. John Marshall King, MD.

**Gender**
Male	43
Female	35

**Age**
From 65 to 74	26
From 75 to 84	25
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. John Marshall King, MD in 2019

Hypertension	59
High Cholesterol	53
Stroke	0
Ischemic Heart Disease	36
Depression	18
Chronic Kidney Disease	22
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	0
Chronic Obstructive Pulmonary Disease	18
Diabetes	24
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. John Marshall King, MD treated as a family medicine practitioner in Haverhill, MA during 2020 were lab tests.

Volume of procedures performed by Dr. John Marshall King, MD for Medicare patients.

doctor visit	326
lab tests	21

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. John Marshall King, MD.

**Gender**
Male	155
Female	205

**Ethnicity**
Non-Hispanic White	302
Black	0
Hispanic	43
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	143
From 75 to 84	102
85 and over	41
Less than 65	74

Conditions of Medicare patients treated by Dr. John Marshall King, MD in 2020

Hypertension	62
High Cholesterol	56
Stroke	4
Ischemic Heart Disease	33
Depression	28
Chronic Kidney Disease	30
Asthma	12
Osteoperosis	11
Atrial Fibrilation	14
Heart Failure	19
Chronic Obstructive Pulmonary Disease	12
Diabetes	26
Dementia	8
Cancer	13

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. John Marshall King, MD treated as a family medicine practitioner in Haverhill, MA during 2021 were preventive care and vaccines.

Volume of procedures performed by Dr. John Marshall King, MD for Medicare patients.

doctor visit	64
preventive care	15
vaccines	15

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. John Marshall King, MD.

**Gender**
Male	55
Female	44

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

**Age**
From 65 to 74	43
From 75 to 84	24
85 and over	12
Less than 65	20

Conditions of Medicare patients treated by Dr. John Marshall King, MD in 2021

Hypertension	60
High Cholesterol	48
Stroke	0
Ischemic Heart Disease	29
Depression	23
Chronic Kidney Disease	21
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	11
Chronic Obstructive Pulmonary Disease	0
Diabetes	20
Dementia	0
Cancer	17

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

Volume of procedures performed by Dr. John Marshall King, MD for Medicare patients.

doctor visit	120

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. John Marshall King, MD.

**Gender**
Male	56
Female	62

**Ethnicity**
Non-Hispanic White	97
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	49
From 75 to 84	33
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. John Marshall King, MD in 2022

Hypertension	58
High Cholesterol	64
Stroke	11
Ischemic Heart Disease	21
Depression	27
Chronic Kidney Disease	17
Asthma	0
Osteoperosis	0
Atrial Fibrilation	10
Heart Failure	0
Chronic Obstructive Pulmonary Disease	9
Diabetes	21
Dementia	0
Cancer	20

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. John Marshall King, MD for Medicare patients.

The highest averages for the top procedures that Dr. John Marshall King, MD treated as a family medicine practitioner in Haverhill, MA were lab tests, blood draw, preventive care and thyroid function tests.

anorectal procedures	26
blood draw	269
diabetes management	81
doctor visit	268
lab tests	678
preventive care	236
thyroid function tests	142
vaccines	52

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. John Marshall King, MD.

**Gender**
Male	83
Female	69

**Ethnicity**
Black / African American	7
Asian / Pacific Islander	0
Non-Hispanic White	115
Native American / Alaskan Native	0
Hispanic	3
Other	0

**Age**
75 to 84	44
85 and over	10
Less than 65	22
65 to 74	63

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

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

Hypertension	59
High Cholesterol	50
Stroke	1
Ischemic Heart Disease	27
Depression	20
Chronic Kidney Disease	21
Asthma	5
Osteoporosis	3
Heart Failure	11
Chronic Obstructive Pulmonary Disease	13
Diabetes	29
Atrial Fibrillation	7
Dementia	5
Cancer	8

Education & Training

He has a state license in Massachusetts.

Licensed In: Massachusetts

Ratings & Reviews

Dr. John Marshall King, MD has an exceptional overall rating with an average of 4.5 out of 5 stars based on 3 ratings. We collect ratings and reviews of Dr. John Marshall King, MD from all over the web to help you find the right in Haverhill, MA.

4.5

Overall Rating

(3 Ratings)

Leave a Review

General Payments

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

**Payments by Company**
Novo Nordisk Inc	$47 Ozempic $26	Wegovy $20
Phathom Pharmaceuticals, Inc.	$22 VOQUEZNA $22
Amgen Inc.	$17 Enbrel $17
AstraZeneca Pharmaceuticals LP	$17 AIRSUPRA $17
Pfizer Inc.	$15 ELIQUIS $15
Other	$12 Mitigare $12

**Types of Payments**
Food and Beverage	$129

Biography

Dr. John King is a physician who specializes in family medicine. Patient reviews placed Dr. King at an average of 4.5 stars (out of 5).

Select Year:

Dr. John Marshall King, MD

Office Locations

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 Marshall King, MD in 2013

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

2014 Medicare Patient Data

Conditions of Medicare patients treated by Dr. John Marshall King, MD in 2014

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

2015 Medicare Patient Data

Conditions of Medicare patients treated by Dr. John Marshall King, MD in 2015

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

2016 Medicare Patient Data

Conditions of Medicare patients treated by Dr. John Marshall King, MD in 2016

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

2017 Medicare Patient Data

Conditions of Medicare patients treated by Dr. John Marshall King, MD in 2017

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

2018 Medicare Patient Data

Conditions of Medicare patients treated by Dr. John Marshall King, MD in 2018

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

2019 Medicare Patient Data

Conditions of Medicare patients treated by Dr. John Marshall King, MD in 2019

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

2020 Medicare Patient Data

Conditions of Medicare patients treated by Dr. John Marshall King, MD in 2020

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

2021 Medicare Patient Data

Conditions of Medicare patients treated by Dr. John Marshall King, MD in 2021

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

2022 Medicare Patient Data

Conditions of Medicare patients treated by Dr. John Marshall King, 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 Marshall King, MD From 2012 - 2022

Education & Training

Ratings & Reviews

General Payments

Biography

Family Physicians & Family Medicine Specialists in Nearby Locations

Other Providers in Haverhill, MA