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Home > TX Providers > Internists & Internal Medicine Doctors

Dr. John M. Willis, DO, MMM

Accepting New Patients

(4 Ratings)

Specializes in: Internal Medicine (Adult Medicine)

Medical College of Georgia (1979)

252 MATLOCK ROAD SUITE 130
MANSFIELD, TX 76063

(682) 242-8990

Dr. John M. Willis, DO, MMM is an internist in MANSFIELD, TX specializing in internal medicine (adult medicine). He graduated from Medical College of Georgia in 1979 and has 47 years of experience. Dr. John M. Willis, DO, MMM is affiliated with Methodist Health System, Baylor Scott & White Health and MEDHEALTH.

Office Locations

252 MATLOCK ROAD SUITE 130
MANSFIELD, TX 76063

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Noteworthy Medicare Patient Procedures Performed by Dr. John M. Willis, DO, MMM in 2023

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

Top 5%

By Affordability:

lab tests

urinalysis

urine tests

In 2023, Dr. John M. Willis, DO, MMM had a list price for lab tests, urinalysis, and urine tests that was lower than the list prices billed to Medicare by 95% of providers in related specialties within Texas. 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:

flu shot

In 2012, Dr. John M. Willis, DO, MMM performed more flu shot procedures for Medicare patients than 75% of providers in related specialties within Texas.

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. John M. Willis, DO, MMM treated as an internist in MANSFIELD, TX during 2012 were blood draw and lab tests.

Volume of procedures performed by Dr. John M. Willis, DO, MMM for Medicare patients.

blood draw	240
doctor visit	1074
lab tests	31

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. John M. Willis, DO, MMM treated as an internist in MANSFIELD, TX during 2013 were hyperbaric oxygen (HBO) therapy, preventive care, vaccines and debridement (removal of unhealthy tissue).

Volume of procedures performed by Dr. John M. Willis, DO, MMM for Medicare patients.

debridement (removal of unhealthy tissue)	27
doctor visit	1100
hyperbaric oxygen (HBO) therapy	165
lab tests	26
preventive care	54
vaccines	54

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. John M. Willis, DO, MMM.

**Gender**
Male	144
Female	144

**Ethnicity**
Non-Hispanic White	226
Black	35
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	101
From 75 to 84	71
85 and over	20
Less than 65	96

Conditions of Medicare patients treated by Dr. John M. Willis, DO, MMM in 2013

Hypertension	59
High Cholesterol	42
Stroke	5
Ischemic Heart Disease	32
Depression	26
Chronic Kidney Disease	17
Asthma	7
Osteoperosis	4
Atrial Fibrilation	9
Heart Failure	19
Chronic Obstructive Pulmonary Disease	13
Diabetes	33
Dementia	9
Cancer	6

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. John M. Willis, DO, MMM treated as an internist in MANSFIELD, TX during 2014 were preventive care, debridement (removal of unhealthy tissue), vaccines and lab tests.

Volume of procedures performed by Dr. John M. Willis, DO, MMM for Medicare patients.

cardiac procedures	20
debridement (removal of unhealthy tissue)	121
doctor visit	984
lab tests	38
preventive care	129
vaccines	109

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. John M. Willis, DO, MMM.

**Gender**
Male	167
Female	166

**Ethnicity**
Non-Hispanic White	260
Black	42
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	140
From 75 to 84	75
85 and over	25
Less than 65	93

Conditions of Medicare patients treated by Dr. John M. Willis, DO, MMM in 2014

Hypertension	59
High Cholesterol	44
Stroke	6
Ischemic Heart Disease	34
Depression	29
Chronic Kidney Disease	21
Asthma	7
Osteoperosis	7
Atrial Fibrilation	9
Heart Failure	20
Chronic Obstructive Pulmonary Disease	13
Diabetes	35
Dementia	12
Cancer	6

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. John M. Willis, DO, MMM treated as an internist in MANSFIELD, TX during 2015 were preventive care, vaccines, debridement (removal of unhealthy tissue) and lab tests.

Volume of procedures performed by Dr. John M. Willis, DO, MMM for Medicare patients.

debridement (removal of unhealthy tissue)	136
diabetes management	30
doctor visit	1120
excision	25
lab tests	64
preventive care	205
vaccines	175

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. John M. Willis, DO, MMM.

**Gender**
Male	336
Female	364

**Ethnicity**
Non-Hispanic White	580
Black	72
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	280
From 75 to 84	172
85 and over	80
Less than 65	168

Conditions of Medicare patients treated by Dr. John M. Willis, DO, MMM in 2015

Hypertension	67
High Cholesterol	50
Stroke	7
Ischemic Heart Disease	38
Depression	25
Chronic Kidney Disease	25
Asthma	12
Osteoperosis	5
Atrial Fibrilation	9
Heart Failure	17
Chronic Obstructive Pulmonary Disease	17
Diabetes	35
Dementia	10
Cancer	7

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. John M. Willis, DO, MMM treated as an internist in MANSFIELD, TX during 2016 were preventive care, vaccines and lab tests.

Volume of procedures performed by Dr. John M. Willis, DO, MMM for Medicare patients.

doctor visit	1140
lab tests	30
preventive care	173
vaccines	173

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. John M. Willis, DO, MMM.

**Gender**
Male	169
Female	236

**Ethnicity**
Non-Hispanic White	328
Black	54
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	182
From 75 to 84	116
85 and over	38
Less than 65	69

Conditions of Medicare patients treated by Dr. John M. Willis, DO, MMM in 2016

Hypertension	65
High Cholesterol	43
Stroke	5
Ischemic Heart Disease	36
Depression	16
Chronic Kidney Disease	23
Asthma	12
Osteoperosis	6
Atrial Fibrilation	8
Heart Failure	14
Chronic Obstructive Pulmonary Disease	13
Diabetes	29
Dementia	11
Cancer	9

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. John M. Willis, DO, MMM treated as an internist in MANSFIELD, TX during 2017 were hyperbaric oxygen (HBO) therapy, preventive care, vaccines and lab tests.

Volume of procedures performed by Dr. John M. Willis, DO, MMM for Medicare patients.

doctor visit	1073
hyperbaric oxygen (HBO) therapy	192
lab tests	43
preventive care	134
vaccines	134

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. John M. Willis, DO, MMM.

**Gender**
Male	151
Female	184

**Ethnicity**
Non-Hispanic White	269
Black	43
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	156
From 75 to 84	81
85 and over	37
Less than 65	61

Conditions of Medicare patients treated by Dr. John M. Willis, DO, MMM in 2017

Hypertension	69
High Cholesterol	41
Stroke	5
Ischemic Heart Disease	33
Depression	20
Chronic Kidney Disease	28
Asthma	6
Osteoperosis	5
Atrial Fibrilation	7
Heart Failure	12
Chronic Obstructive Pulmonary Disease	9
Diabetes	31
Dementia	13
Cancer	10

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. John M. Willis, DO, MMM treated as an internist in MANSFIELD, TX during 2018 were preventive care, vaccines and lab tests.

Volume of procedures performed by Dr. John M. Willis, DO, MMM for Medicare patients.

doctor visit	864
lab tests	33
preventive care	112
vaccines	112

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. John M. Willis, DO, MMM.

**Gender**
Male	126
Female	153

**Ethnicity**
Non-Hispanic White	227
Black	30
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	119
From 75 to 84	82
85 and over	30
Less than 65	48

Conditions of Medicare patients treated by Dr. John M. Willis, DO, MMM in 2018

Hypertension	65
High Cholesterol	43
Stroke	7
Ischemic Heart Disease	31
Depression	16
Chronic Kidney Disease	27
Asthma	7
Osteoperosis	5
Atrial Fibrilation	8
Heart Failure	12
Chronic Obstructive Pulmonary Disease	12
Diabetes	31
Dementia	12
Cancer	8

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. John M. Willis, DO, MMM treated as an internist in MANSFIELD, TX during 2019 were preventive care, vaccines and lab tests.

Volume of procedures performed by Dr. John M. Willis, DO, MMM for Medicare patients.

doctor visit	723
lab tests	38
preventive care	104
vaccines	104

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. John M. Willis, DO, MMM.

**Gender**
Male	112
Female	132

**Ethnicity**
Non-Hispanic White	197
Black	29
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	111
From 75 to 84	77
85 and over	25
Less than 65	31

Conditions of Medicare patients treated by Dr. John M. Willis, DO, MMM in 2019

Hypertension	74
High Cholesterol	42
Stroke	0
Ischemic Heart Disease	30
Depression	16
Chronic Kidney Disease	23
Asthma	0
Osteoperosis	5
Atrial Fibrilation	7
Heart Failure	9
Chronic Obstructive Pulmonary Disease	11
Diabetes	31
Dementia	12
Cancer	7

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. John M. Willis, DO, MMM treated as an internist in MANSFIELD, TX during 2020 were preventive care, vaccines and lab tests.

Volume of procedures performed by Dr. John M. Willis, DO, MMM for Medicare patients.

doctor visit	705
lab tests	25
preventive care	112
vaccines	112

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. John M. Willis, DO, MMM.

**Gender**
Male	144
Female	166

**Ethnicity**
Non-Hispanic White	254
Black	30
Hispanic	14
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	141
From 75 to 84	109
85 and over	38
Less than 65	22

Conditions of Medicare patients treated by Dr. John M. Willis, DO, MMM in 2020

Hypertension	73
High Cholesterol	48
Stroke	5
Ischemic Heart Disease	32
Depression	15
Chronic Kidney Disease	26
Asthma	5
Osteoperosis	0
Atrial Fibrilation	6
Heart Failure	11
Chronic Obstructive Pulmonary Disease	9
Diabetes	30
Dementia	11
Cancer	10

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. John M. Willis, DO, MMM treated as an internist in MANSFIELD, TX during 2021 were preventive care, vaccines and lab tests.

Volume of procedures performed by Dr. John M. Willis, DO, MMM for Medicare patients.

doctor visit	683
lab tests	12
preventive care	66
vaccines	66

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. John M. Willis, DO, MMM.

**Gender**
Male	138
Female	144

**Ethnicity**
Non-Hispanic White	229
Black	27
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	123
From 75 to 84	108
85 and over	30
Less than 65	21

Conditions of Medicare patients treated by Dr. John M. Willis, DO, MMM in 2021

Hypertension	72
High Cholesterol	53
Stroke	0
Ischemic Heart Disease	29
Depression	12
Chronic Kidney Disease	22
Asthma	6
Osteoperosis	0
Atrial Fibrilation	6
Heart Failure	11
Chronic Obstructive Pulmonary Disease	10
Diabetes	30
Dementia	9
Cancer	11

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. John M. Willis, DO, MMM treated as an internist in MANSFIELD, TX during 2022 were preventive care, vaccines and lab tests.

Volume of procedures performed by Dr. John M. Willis, DO, MMM for Medicare patients.

doctor visit	693
lab tests	14
preventive care	90
vaccines	90

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. John M. Willis, DO, MMM.

**Gender**
Male	132
Female	140

**Ethnicity**
Non-Hispanic White	224
Black	27
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	118
From 75 to 84	100
85 and over	35
Less than 65	19

Conditions of Medicare patients treated by Dr. John M. Willis, DO, MMM in 2022

Hypertension	75
High Cholesterol	67
Stroke	8
Ischemic Heart Disease	25
Depression	12
Chronic Kidney Disease	15
Asthma	7
Osteoperosis	6
Atrial Fibrilation	12
Heart Failure	11
Chronic Obstructive Pulmonary Disease	11
Diabetes	30
Dementia	9
Cancer	15

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. John M. Willis, DO, MMM for Medicare patients.

The highest averages for the top procedures that Dr. John M. Willis, DO, MMM treated as an internist in MANSFIELD, TX were blood draw, preventive care, vaccines and debridement (removal of unhealthy tissue).

blood draw	240
cardiac procedures	20
debridement (removal of unhealthy tissue)	94
diabetes management	30
doctor visit	923
excision	25
lab tests	32
preventive care	117
vaccines	112

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. John M. Willis, DO, MMM.

**Gender**
Male	147
Female	166

**Ethnicity**
Black / African American	35
Asian / Pacific Islander	0
Non-Hispanic White	254
Native American / Alaskan Native	0
Hispanic	1
Other	0

**Age**
75 to 84	90
85 and over	32
Less than 65	57
65 to 74	133

Average of Total of Conditions of Medicare patients treated by Dr. John M. Willis, DO, MMM From 2012 - 2022

The highest averages of the most common conditions of Medicare patients that Dr. John M. Willis, DO, MMM treated were hypertension, high cholesterol, diabetes and ischemic heart disease.

Hypertension	61
High Cholesterol	43
Stroke	4
Ischemic Heart Disease	29
Depression	17
Chronic Kidney Disease	20
Asthma	6
Osteoporosis	3
Heart Failure	12
Chronic Obstructive Pulmonary Disease	10
Diabetes	28
Atrial Fibrillation	7
Dementia	9
Cancer	8

Education & Training

Dr. John M. Willis, DO, MMM graduated from Medical College of Georgia in 1979. He completed residency at Philadelphia College of Osteopathic Medicine Affiliated Hospitals. He is certified by the Board Certification: American Osteopathic Association - Internal Medicine and Addiction Medicine-Internal Medicine and has a state license in Texas.

Medical School: Medical College of Georgia (1979)

Residency: Philadelphia College of Osteopathic Medicine Affiliated Hospitals

Board Certification: Board Certification: American Osteopathic Association - Internal Medicine and Addiction Medicine-Internal Medicine

Licensed In: Texas

Affiliations & Hospitals

Dr. John M. Willis, DO, MMM is associated with these hospitals and organizations:

Methodist Health System

Baylor Scott & White Health

MEDHEALTH

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. John M. Willis, DO, MMM appears to accept the following insurance providers: Superior Health Plan, TriWest, Medicaid, Cigna, Catalyst Health Group-Catalyst Health - Baylor Scott & White Preferred, Baylor Scott & White Health Plan-HMO Network-Group, Baylor Scott & White Health Plan-BSW Preferred HMO Network - Group, Baylor Scott & White Health Plan-BSW Plus HMO-Individual/Family, Prism Electric-BSW Premier - Prism, Baylor Scott & White Health Plan-Hendrick Health Employee Plan, Baylor Scott & White Health Plan-BSW Plus PPO-Individual/Family, Nebraska Furniture Mart-Emerald, Baylor Scott & White Health Plan-BSW Solutions PPO, Baylor Scott & White Health Plan-PPO Network-Group, Baylor Scott & White Health Plan-McLane Group Network, Baylor Scott & White Health Plan-BSWH Employee Network Premium (PPO)/ HDHP, Baylor Scott & White Health Plan-BSW Plus PPO-Group, Baylor Scott & White Health Plan-BSW Premier HMO-Group, Baylor Scott & White Health Plan-BSW SeniorCare Advantage HMO, Baylor Scott & White Health Plan-BSWH Employee Network (SEQA & EQA), Baylor Scott & White Health Plan-BSW Access PPO, Baylor Scott & White Health Plan-BSW SeniorCare Advantage PPO, Baylor Scott & White Health Plan-Pyco Industries Employee Plan, Nebraska Furniture Mart-Onyx, Nebraska Furniture Mart-Pearl, Baylor Scott & White Health Plan-BSW Plus HMO-Group, Baylor Scott & White Health Plan-BSW Premier PPO, DFW ConnectedCare-American Airlines Employee Benefit Plan, Baylor Scott & White Health Plan-Covenant Preferred HMO, Baylor Scott & White Health Plan-ERS BSW Preferred HMO Network, Baylor Scott & White Health Plan-BSW Preferred HMO - Individual Marketplace, Centivo Network-Centivo Network - Baylor Scott & White Premier, Baylor Scott & White Health Plan-EPO Network-Individual/Family, Baylor Scott & White Health Plan-BSW Preferred PPO Network, Baylor Scott & White Health Plan-BSW Premier HMO-Individual/Family and Baylor Scott & White Health Plan-HMO Network-Individual/Family.

Insurance Accepted by Provider includes:

According to our sources, Dr. John M. Willis, DO, MMM accepts the following insurance providers:

Superior Health Plan

TriWest

Medicaid

Cigna

Catalyst Health Group-Catalyst Health - Baylor Scott & White Preferred

Baylor Scott & White Health Plan-HMO Network-Group

Baylor Scott & White Health Plan-BSW Preferred HMO Network - Group

Baylor Scott & White Health Plan-BSW Plus HMO-Individual/Family

Prism Electric-BSW Premier - Prism

Baylor Scott & White Health Plan-Hendrick Health Employee Plan

Baylor Scott & White Health Plan-BSW Plus PPO-Individual/Family

Nebraska Furniture Mart-Emerald

Baylor Scott & White Health Plan-BSW Solutions PPO

Baylor Scott & White Health Plan-PPO Network-Group

Baylor Scott & White Health Plan-McLane Group Network

Baylor Scott & White Health Plan-BSWH Employee Network Premium (PPO)/ HDHP

Baylor Scott & White Health Plan-BSW Plus PPO-Group

Baylor Scott & White Health Plan-BSW Premier HMO-Group

Baylor Scott & White Health Plan-BSW SeniorCare Advantage HMO

Baylor Scott & White Health Plan-BSWH Employee Network (SEQA & EQA)

Baylor Scott & White Health Plan-BSW Access PPO

Baylor Scott & White Health Plan-BSW SeniorCare Advantage PPO

Baylor Scott & White Health Plan-Pyco Industries Employee Plan

Nebraska Furniture Mart-Onyx

Nebraska Furniture Mart-Pearl

Baylor Scott & White Health Plan-BSW Plus HMO-Group

Baylor Scott & White Health Plan-BSW Premier PPO

DFW ConnectedCare-American Airlines Employee Benefit Plan

Baylor Scott & White Health Plan-Covenant Preferred HMO

Baylor Scott & White Health Plan-ERS BSW Preferred HMO Network

Baylor Scott & White Health Plan-BSW Preferred HMO - Individual Marketplace

Centivo Network-Centivo Network - Baylor Scott & White Premier

Baylor Scott & White Health Plan-EPO Network-Individual/Family

Baylor Scott & White Health Plan-BSW Preferred PPO Network

Baylor Scott & White Health Plan-BSW Premier HMO-Individual/Family

Baylor Scott & White Health Plan-HMO Network-Individual/Family

Ratings & Reviews

Dr. John M. Willis, DO, MMM has an average of 2.25 out of 5 stars based on 4 ratings. We collect ratings and reviews of Dr. John M. Willis, DO, MMM from all over the web to help you find the right in MANSFIELD, TX.

2.25

Overall Rating

(4 Ratings)

Leave a Review

General Payments

These charts describe general payments received by Dr. John M. Willis, DO, MMM. Doctors may receive payments for a number of reasons, including meal compensation, travel compensation, and consulting.

**Payments by Company**
Novo Nordisk Inc	$1,086 Victoza $215	NovoLog $189	Saxenda $164	Tresiba $146	Ozempic $75	Other $297
SANOFI PASTEUR INC.	$1,035 NO PRODUCT DISCUSSED $983	FLUBLOK QUADRIVALENT $29	FLUZONE QUADRIVALENT $12	FLUZONE HIGH-DOSE $11
Lilly USA, LLC	$646 BASAGLAR $276	JARDIANCE $125	TRULICITY $87	GLYXAMBI $47	EMGALITY $47	Other $64
AstraZeneca Pharmaceuticals LP	$546 FARXIGA $191	SAPHNELO $186	SYMBICORT $55	BYDUREON WEEKLY $47	ONGLYZA $34	Other $32
SANOFI-AVENTIS U.S. LLC	$295 LANTUS $196	TOUJEO $49	SOLIQUA $38	APIDRA $12
Other	$4,005 Repatha $232	Vascepa $193	LATUDA $133	FreeStyle Libre blood glucose Flash Monitoring System $131	SUBOXONE SUBLINGUAL FILM $124	Other $3,193

**Types of Payments**
Food and Beverage	$6,571
Gift	$929
Education	$113

Biography

Dr. John Willis is conversant in Spanish. He is professionally affiliated with Baylor Scott & White Health and Methodist Health System. Dr. Willis obtained his medical school training at the University of North Texas Health Science Center, Texas College of Osteopathic Medicine and Medical College of Georgia and performed his residency at Osteopathic Medical Center of Texas, Greenville Health System, and a hospital affiliated with Philadelphia College of Osteopathic Medicine. The average patient rating for Dr. Willis is 2.0 stars (out of 5). He accepts Superior Health Plan, Cigna, and Medicaid, in addition to other insurance carriers. According to Doctor.com, new patients are welcome to contact Dr. Willis's office in MANSFIELD, TX.