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Dr. Mark Joseph Fesler, MD

Accepting New Patients

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Specializes in: Medical Oncology, Adult Oncology and Adult Hematology

St. Louis University School of Medicine

232 S. Woods Mill Road Suite 330
Chesterfield, MO 63017

(314) 205-6737

Dr. Mark Joseph Fesler, MD is a medical oncologist in Chesterfield, MO specializing in medical oncology, adult oncology and adult hematology. He graduated from St. Louis University School of Medicine. Dr. Mark Joseph Fesler, MD is affiliated with St. Luke's Hospital, St. Luke's and St. Luke's Medical Group.

Office Locations

St. Luke's Medical Group

232 S. Woods Mill Road Suite 330
Chesterfield, MO 63017

(314) 205-6737

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3655 Vista Avenue
Saint Louis, MO 63110

(314) 977-4340

(314) 773-1167

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Noteworthy Medicare Patient Procedures Performed by Dr. Mark Joseph Fesler, MD in 2023

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

Top 10%

By Volume:

inpatient hospital care

In 2023, Dr. Mark Joseph Fesler, MD performed more inpatient hospital care (for patient admitted to hospital) procedures for Medicare patients than 90% of providers in related specialties within Missouri.

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. Mark Joseph Fesler, MD treated as a medical oncologist in Chesterfield, MO during 2012 were hospital care, inpatient care, minimally invasive procedures and chemotherapy.

Volume of procedures performed by Dr. Mark Joseph Fesler, MD for Medicare patients.

aspiration	27
biological response modifier (BRM) therapy	206
blood draw	50
bone marrow tests	54
chemotherapy	206
diagnostic procedures	27
doctor visit	563
hospital care	663
inpatient care	663
minimally invasive procedures	244
port flush	48

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Mark Joseph Fesler, MD treated as a medical oncologist in Chesterfield, MO during 2013 were minimally invasive procedures, chemotherapy, biological response modifier (BRM) therapy and hospital care.

Volume of procedures performed by Dr. Mark Joseph Fesler, MD for Medicare patients.

biological response modifier (BRM) therapy	118
blood draw	32
chemotherapy	118
doctor visit	381
hospital care	111
inpatient care	111
minimally invasive procedures	174
port flush	85

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark Joseph Fesler, MD.

**Gender**
Male	89
Female	91

**Ethnicity**
Non-Hispanic White	129
Black	38
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	75
From 75 to 84	0
85 and over	0
Less than 65	62

Conditions of Medicare patients treated by Dr. Mark Joseph Fesler, MD in 2013

Hypertension	65
High Cholesterol	45
Stroke	6
Ischemic Heart Disease	47
Depression	31
Chronic Kidney Disease	44
Asthma	9
Osteoperosis	11
Atrial Fibrilation	13
Heart Failure	25
Chronic Obstructive Pulmonary Disease	26
Diabetes	33
Dementia	9
Cancer	12

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Mark Joseph Fesler, MD treated as a medical oncologist in Chesterfield, MO during 2014 were hospital care, inpatient care, chemotherapy and biological response modifier (BRM) therapy.

Volume of procedures performed by Dr. Mark Joseph Fesler, MD for Medicare patients.

biological response modifier (BRM) therapy	43
blood draw	19
bone marrow tests	15
chemotherapy	43
diagnostic procedures	15
doctor visit	432
hospital care	59
inpatient care	59
minimally invasive procedures	43
port flush	20

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark Joseph Fesler, MD.

**Gender**
Male	76
Female	82

**Ethnicity**
Non-Hispanic White	119
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

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

Conditions of Medicare patients treated by Dr. Mark Joseph Fesler, MD in 2014

Hypertension	61
High Cholesterol	47
Stroke	0
Ischemic Heart Disease	41
Depression	34
Chronic Kidney Disease	38
Asthma	9
Osteoperosis	9
Atrial Fibrilation	0
Heart Failure	22
Chronic Obstructive Pulmonary Disease	16
Diabetes	28
Dementia	8
Cancer	12

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

Volume of procedures performed by Dr. Mark Joseph Fesler, MD for Medicare patients.

doctor visit	187

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark Joseph Fesler, MD.

**Gender**
Male	110
Female	110

**Ethnicity**
Non-Hispanic White	182
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	100
From 75 to 84	0
85 and over	0
Less than 65	56

Conditions of Medicare patients treated by Dr. Mark Joseph Fesler, MD in 2015

Hypertension	62
High Cholesterol	45
Stroke	0
Ischemic Heart Disease	42
Depression	30
Chronic Kidney Disease	44
Asthma	10
Osteoperosis	10
Atrial Fibrilation	0
Heart Failure	18
Chronic Obstructive Pulmonary Disease	12
Diabetes	35
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Mark Joseph Fesler, MD treated as a medical oncologist in Chesterfield, MO during 2016 were hospital care and inpatient care.

Volume of procedures performed by Dr. Mark Joseph Fesler, MD for Medicare patients.

doctor visit	323
hospital care	45
inpatient care	45

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark Joseph Fesler, MD.

**Gender**
Male	63
Female	57

**Ethnicity**
Non-Hispanic White	102
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	55
From 75 to 84	0
85 and over	0
Less than 65	32

Conditions of Medicare patients treated by Dr. Mark Joseph Fesler, MD in 2016

Hypertension	69
High Cholesterol	43
Stroke	0
Ischemic Heart Disease	34
Depression	33
Chronic Kidney Disease	43
Asthma	23
Osteoperosis	11
Atrial Fibrilation	13
Heart Failure	21
Chronic Obstructive Pulmonary Disease	22
Diabetes	30
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

Volume of procedures performed by Dr. Mark Joseph Fesler, MD for Medicare patients.

doctor visit	269

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark Joseph Fesler, MD.

**Gender**
Male	53
Female	38

**Ethnicity**
Non-Hispanic White	75
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	43
From 75 to 84	0
85 and over	0
Less than 65	26

Conditions of Medicare patients treated by Dr. Mark Joseph Fesler, MD in 2017

Hypertension	69
High Cholesterol	47
Stroke	0
Ischemic Heart Disease	41
Depression	35
Chronic Kidney Disease	56
Asthma	15
Osteoperosis	13
Atrial Fibrilation	12
Heart Failure	37
Chronic Obstructive Pulmonary Disease	27
Diabetes	24
Dementia	19
Cancer	0

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

Volume of procedures performed by Dr. Mark Joseph Fesler, MD for Medicare patients.

doctor visit	283

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark Joseph Fesler, MD.

**Gender**
Male	64
Female	46

**Ethnicity**
Non-Hispanic White	92
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	53
From 75 to 84	0
85 and over	0
Less than 65	32

Conditions of Medicare patients treated by Dr. Mark Joseph Fesler, MD in 2018

Hypertension	62
High Cholesterol	55
Stroke	0
Ischemic Heart Disease	38
Depression	33
Chronic Kidney Disease	54
Asthma	0
Osteoperosis	0
Atrial Fibrilation	10
Heart Failure	36
Chronic Obstructive Pulmonary Disease	23
Diabetes	34
Dementia	13
Cancer	0

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Mark Joseph Fesler, MD treated as a medical oncologist in Chesterfield, MO during 2019 were hospital care and inpatient care.

Volume of procedures performed by Dr. Mark Joseph Fesler, MD for Medicare patients.

doctor visit	202
hospital care	122
inpatient care	122

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark Joseph Fesler, MD.

**Gender**
Male	72
Female	53

**Ethnicity**
Non-Hispanic White	98
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	66
From 75 to 84	0
85 and over	0
Less than 65	32

Conditions of Medicare patients treated by Dr. Mark Joseph Fesler, MD in 2019

Hypertension	66
High Cholesterol	53
Stroke	11
Ischemic Heart Disease	32
Depression	32
Chronic Kidney Disease	50
Asthma	0
Osteoperosis	10
Atrial Fibrilation	12
Heart Failure	34
Chronic Obstructive Pulmonary Disease	20
Diabetes	34
Dementia	17
Cancer	11

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Mark Joseph Fesler, MD treated as a medical oncologist in Chesterfield, MO during 2020 were hospital care and inpatient care.

Volume of procedures performed by Dr. Mark Joseph Fesler, MD for Medicare patients.

doctor visit	169
hospital care	197
inpatient care	197

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark Joseph Fesler, MD.

**Gender**
Male	64
Female	53

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

**Age**
From 65 to 74	60
From 75 to 84	27
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Mark Joseph Fesler, MD in 2020

Hypertension	67
High Cholesterol	45
Stroke	0
Ischemic Heart Disease	36
Depression	27
Chronic Kidney Disease	55
Asthma	0
Osteoperosis	0
Atrial Fibrilation	15
Heart Failure	38
Chronic Obstructive Pulmonary Disease	21
Diabetes	36
Dementia	10
Cancer	15

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Mark Joseph Fesler, MD treated as a medical oncologist in Chesterfield, MO during 2021 were hospital care and inpatient care.

Volume of procedures performed by Dr. Mark Joseph Fesler, MD for Medicare patients.

doctor visit	194
hospital care	136
inpatient care	136

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark Joseph Fesler, MD.

**Gender**
Male	58
Female	50

**Ethnicity**
Non-Hispanic White	91
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	62
From 75 to 84	22
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Mark Joseph Fesler, MD in 2021

Hypertension	61
High Cholesterol	50
Stroke	0
Ischemic Heart Disease	27
Depression	29
Chronic Kidney Disease	48
Asthma	0
Osteoperosis	0
Atrial Fibrilation	16
Heart Failure	37
Chronic Obstructive Pulmonary Disease	19
Diabetes	25
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Mark Joseph Fesler, MD treated as a medical oncologist in Chesterfield, MO during 2022 were hospital care and inpatient care.

Volume of procedures performed by Dr. Mark Joseph Fesler, MD for Medicare patients.

doctor visit	687
hospital care	232
inpatient care	232

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark Joseph Fesler, MD.

**Gender**
Male	117
Female	89

**Ethnicity**
Non-Hispanic White	188
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	76
From 75 to 84	93
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Mark Joseph Fesler, MD in 2022

Hypertension	75
High Cholesterol	75
Stroke	9
Ischemic Heart Disease	36
Depression	23
Chronic Kidney Disease	31
Asthma	10
Osteoperosis	12
Atrial Fibrilation	26
Heart Failure	27
Chronic Obstructive Pulmonary Disease	20
Diabetes	32
Dementia	9
Cancer	23

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. Mark Joseph Fesler, MD for Medicare patients.

The highest averages for the top procedures that Dr. Mark Joseph Fesler, MD treated as a medical oncologist in Chesterfield, MO were hospital care, inpatient care, minimally invasive procedures and chemotherapy.

aspiration	27
biological response modifier (BRM) therapy	122
blood draw	33
bone marrow tests	34
chemotherapy	122
diagnostic procedures	21
doctor visit	335
hospital care	195
inpatient care	195
minimally invasive procedures	153

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. Mark Joseph Fesler, MD.

**Gender**
Male	69
Female	60

**Ethnicity**
Black / African American	3
Asian / Pacific Islander	0
Non-Hispanic White	106
Native American / Alaskan Native	0
Hispanic	0
Other	0

**Age**
75 to 84	12
85 and over	0
Less than 65	26
65 to 74	59

Average of Total of Conditions of Medicare patients treated by Dr. Mark Joseph Fesler, MD From 2012 - 2022

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

Hypertension	59
High Cholesterol	45
Stroke	2
Ischemic Heart Disease	34
Depression	27
Chronic Kidney Disease	42
Asthma	6
Osteoporosis	6
Heart Failure	26
Chronic Obstructive Pulmonary Disease	18
Diabetes	28
Atrial Fibrillation	10
Dementia	7
Cancer	6

Education & Training

Dr. Mark Joseph Fesler, MD graduated from St. Louis University School of Medicine. He completed residency at University of Colorado Denver Affiliated Hospitals. He has a state license in Missouri.

Medical School: St. Louis University School of Medicine

Residency: University of Colorado Denver Affiliated Hospitals

Licensed In: Missouri

Affiliations & Hospitals

Dr. Mark Joseph Fesler, MD is associated with these hospitals and organizations:

St. Luke's Hospital

St. Luke's

St. Luke's Medical Group

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. Mark Joseph Fesler, MD appears to accept the following insurance providers: Oscar, WellCare, United Healthcare, Aetna, TRICARE, Medicare, Medicaid, Humana, Railroad Medicare, Cigna, Anthem, HealthLink, Private Healthcare Systems (PHCS), Healthy Blue, Allwell, Medica (WellFirst), HomeState, Essence, Ambetter and Ascension.

Insurance Accepted by Provider includes:

According to our sources, Dr. Mark Joseph Fesler, MD accepts the following insurance providers:

Oscar

WellCare

United Healthcare

Aetna

TRICARE

Medicare

Medicaid

Humana

Railroad Medicare

Cigna

Anthem

HealthLink

Private Healthcare Systems (PHCS)

Healthy Blue

Allwell

Medica (WellFirst)

HomeState

Essence

Ambetter

Ascension

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General Payments

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

**Payments by Company**
Incyte Corporation	$118,753 MONJUVI $61,953	JAKAFI $56,625	$175
GENZYME CORPORATION	$106,782 MOZOBIL $44,877	SARCLISA $4,511	$57,393
AbbVie Inc.	$72,059 Venclexta $45,098	EPKINLY $5,307	$21,653
ADC Therapeutics America, Inc.	$35,762 $35,762
BeiGene USA, Inc.	$34,094 BRUKINSA $25,094	$9,000
Other	$148,525 MOZOBIL $20,072	Epkinly $13,488	LUNSUMIO $11,425	CALQUENCE $8,129	Columvi $7,479	Other $87,932

**Types of Payments**
Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program	$354,247
Consulting Fee	$115,500
Travel and Lodging	$31,738
Food and Beverage	$8,454
Honoraria	$5,800
Other	$237

Research Payments

Dr. Mark Joseph Fesler, MD has received 20 research payments totaling $187,915.

Biography

Dr. Mark Fesler specializes in adult hematology, adult oncology, and medical oncology and practices in Saint Louis, MO and Chesterfield, MO. He graduated from St. Louis University School of Medicine. Dr. Fesler's medical residency was performed at a hospital affiliated with the University of Colorado Denver. He appears to be an in-network provider for Anthem, Blue California, Aetna, and more. He is professionally affiliated with St. Luke's. According to St. Luke's, he is currently accepting new patients at his office in Chesterfield, MO.