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Dr. Mark H. Gregory, MD, FACP

Accepting New Patients

(Dr. Mark H. Gregory, MD, FACP)

(4 Ratings)

Specializes in: Internal Medicine (Adult Medicine)

University of Vermont College of Medicine (1986)

555 North New Ballas Road Suite 110
Saint Louis, MO 63141

(314) 872-8470

Dr. Mark H. Gregory, MD, FACP is an internist in Saint Louis, MO specializing in internal medicine (adult medicine). He graduated from University of Vermont College of Medicine in 1986 and has 40 years of experience. Dr. Mark H. Gregory, MD, FACP is affiliated with BJC HealthCare.

Office Locations

555 North New Ballas Road Suite 110
Saint Louis, MO 63141

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Noteworthy Medicare Patient Procedures Performed by Dr. Mark H. Gregory, MD, FACP in 2023

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

Top 5%

By Volume:

urinalysis

By Affordability:

blood draw

blood draw for lab tests

phlebotomy for lab tests

In 2023, among providers in related specialties within Missouri, Dr. Mark H. Gregory, MD, FACP performed more urinalysis procedures for Medicare patients than 95% of them and he also had a list price for blood draw, blood draw for lab tests, flu shot, flu vaccine, immunization (preventive vaccines), lab tests, phlebotomy for lab tests, urinalysis, urine tests, vaccines, and venipuncture (phlebotomy) that was lower than the list prices billed to Medicare by 95% of them. 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 10%

By Volume:

blood draw

phlebotomy for lab tests

In 2023, Dr. Mark H. Gregory, MD, FACP performed more blood draw, and phlebotomy for lab tests procedures for Medicare patients than 90% of providers in related specialties within Missouri.

Top 25%

By Volume:

flu shot

In 2012, Dr. Mark H. Gregory, MD, FACP performed more flu shot procedures for Medicare patients than 75% of providers in related specialties within Missouri.

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. Mark H. Gregory, MD, FACP treated as an internist in Saint Louis, MO during 2012 were lab tests, preventive care, blood draw and nursing home care.

Volume of procedures performed by Dr. Mark H. Gregory, MD, FACP for Medicare patients.

blood draw	416
diabetes management	111
doctor visit	866
lab tests	1351
musculoskeletal imaging	13
nursing home care	395
preventive care	445
thoracic (chest) imaging	30
thyroid function tests	288
vaccines	153
X-rays	43

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Mark H. Gregory, MD, FACP treated as an internist in Saint Louis, MO during 2013 were lab tests, blood draw, preventive care and thyroid function tests.

Volume of procedures performed by Dr. Mark H. Gregory, MD, FACP for Medicare patients.

blood draw	473
diabetes management	86
doctor visit	1125
lab tests	1666
musculoskeletal imaging	15
nursing home care	14
preventive care	420
thoracic (chest) imaging	40
thyroid function tests	357
vaccines	137
X-rays	55

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark H. Gregory, MD, FACP.

**Gender**
Male	202
Female	264

**Ethnicity**
Non-Hispanic White	338
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	201
From 75 to 84	129
85 and over	88
Less than 65	48

Conditions of Medicare patients treated by Dr. Mark H. Gregory, MD, FACP in 2013

Hypertension	62
High Cholesterol	30
Stroke	5
Ischemic Heart Disease	33
Depression	19
Chronic Kidney Disease	19
Asthma	6
Osteoperosis	7
Atrial Fibrilation	15
Heart Failure	18
Chronic Obstructive Pulmonary Disease	8
Diabetes	29
Dementia	11
Cancer	15

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Mark H. Gregory, MD, FACP treated as an internist in Saint Louis, MO during 2014 were lab tests, preventive care, blood draw and thyroid function tests.

Volume of procedures performed by Dr. Mark H. Gregory, MD, FACP for Medicare patients.

blood draw	337
diabetes management	118
doctor visit	750
lab tests	1323
musculoskeletal imaging	11
preventive care	375
thoracic (chest) imaging	22
thyroid function tests	300
vaccines	102
X-rays	33

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark H. Gregory, MD, FACP.

**Gender**
Male	171
Female	185

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

**Age**
From 65 to 74	154
From 75 to 84	115
85 and over	57
Less than 65	30

Conditions of Medicare patients treated by Dr. Mark H. Gregory, MD, FACP in 2014

Hypertension	63
High Cholesterol	39
Stroke	6
Ischemic Heart Disease	31
Depression	21
Chronic Kidney Disease	17
Asthma	5
Osteoperosis	7
Atrial Fibrilation	14
Heart Failure	17
Chronic Obstructive Pulmonary Disease	7
Diabetes	29
Dementia	9
Cancer	13

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Mark H. Gregory, MD, FACP treated as an internist in Saint Louis, MO during 2015 were blood draw, hospital care, inpatient care and lab tests.

Volume of procedures performed by Dr. Mark H. Gregory, MD, FACP for Medicare patients.

blood draw	291
diabetes management	58
doctor visit	679
hospital care	282
inpatient care	282
lab tests	163
preventive care	104
vaccines	46

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark H. Gregory, MD, FACP.

**Gender**
Male	278
Female	296

**Ethnicity**
Non-Hispanic White	502
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	236
From 75 to 84	212
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Mark H. Gregory, MD, FACP in 2015

Hypertension	73
High Cholesterol	75
Stroke	12
Ischemic Heart Disease	40
Depression	26
Chronic Kidney Disease	25
Asthma	10
Osteoperosis	9
Atrial Fibrilation	19
Heart Failure	20
Chronic Obstructive Pulmonary Disease	6
Diabetes	28
Dementia	13
Cancer	21

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Mark H. Gregory, MD, FACP treated as an internist in Saint Louis, MO during 2016 were blood draw, preventive care, vaccines and hospital care.

Volume of procedures performed by Dr. Mark H. Gregory, MD, FACP for Medicare patients.

blood draw	584
diabetes management	52
doctor visit	783
hospital care	156
inpatient care	156
lab tests	112
preventive care	255
vaccines	203

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark H. Gregory, MD, FACP.

**Gender**
Male	141
Female	150

**Ethnicity**
Non-Hispanic White	253
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	113
From 75 to 84	120
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Mark H. Gregory, MD, FACP in 2016

Hypertension	66
High Cholesterol	50
Stroke	4
Ischemic Heart Disease	36
Depression	15
Chronic Kidney Disease	23
Asthma	10
Osteoperosis	7
Atrial Fibrilation	13
Heart Failure	17
Chronic Obstructive Pulmonary Disease	7
Diabetes	29
Dementia	11
Cancer	17

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Mark H. Gregory, MD, FACP treated as an internist in Saint Louis, MO during 2017 were blood draw, preventive care, vaccines and hospital care.

Volume of procedures performed by Dr. Mark H. Gregory, MD, FACP for Medicare patients.

blood draw	380
diabetes management	19
doctor visit	649
hospital care	103
inpatient care	103
lab tests	82
preventive care	193
vaccines	174

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark H. Gregory, MD, FACP.

**Gender**
Male	131
Female	142

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

**Age**
From 65 to 74	95
From 75 to 84	110
85 and over	51
Less than 65	17

Conditions of Medicare patients treated by Dr. Mark H. Gregory, MD, FACP in 2017

Hypertension	63
High Cholesterol	35
Stroke	5
Ischemic Heart Disease	31
Depression	16
Chronic Kidney Disease	19
Asthma	6
Osteoperosis	9
Atrial Fibrilation	11
Heart Failure	14
Chronic Obstructive Pulmonary Disease	5
Diabetes	26
Dementia	12
Cancer	17

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Mark H. Gregory, MD, FACP treated as an internist in Saint Louis, MO during 2018 were blood draw, preventive care, vaccines and lab tests.

Volume of procedures performed by Dr. Mark H. Gregory, MD, FACP for Medicare patients.

blood draw	599
doctor visit	729
hospital care	124
inpatient care	124
lab tests	165
preventive care	185
vaccines	185

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark H. Gregory, MD, FACP.

**Gender**
Male	139
Female	146

**Ethnicity**
Non-Hispanic White	253
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	108
From 75 to 84	120
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Mark H. Gregory, MD, FACP in 2018

Hypertension	62
High Cholesterol	41
Stroke	5
Ischemic Heart Disease	32
Depression	15
Chronic Kidney Disease	21
Asthma	5
Osteoperosis	10
Atrial Fibrilation	11
Heart Failure	16
Chronic Obstructive Pulmonary Disease	7
Diabetes	23
Dementia	11
Cancer	15

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Mark H. Gregory, MD, FACP treated as an internist in Saint Louis, MO during 2019 were blood draw, lab tests, preventive care and vaccines.

Volume of procedures performed by Dr. Mark H. Gregory, MD, FACP for Medicare patients.

blood draw	537
doctor visit	697
hospital care	109
inpatient care	109
lab tests	167
preventive care	151
vaccines	151

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark H. Gregory, MD, FACP.

**Gender**
Male	141
Female	144

**Ethnicity**
Non-Hispanic White	253
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	100
From 75 to 84	125
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Mark H. Gregory, MD, FACP in 2019

Hypertension	62
High Cholesterol	40
Stroke	4
Ischemic Heart Disease	34
Depression	14
Chronic Kidney Disease	21
Asthma	6
Osteoperosis	9
Atrial Fibrilation	15
Heart Failure	17
Chronic Obstructive Pulmonary Disease	9
Diabetes	20
Dementia	10
Cancer	18

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Mark H. Gregory, MD, FACP treated as an internist in Saint Louis, MO during 2020 were blood draw, lab tests, hospital care and inpatient care.

Volume of procedures performed by Dr. Mark H. Gregory, MD, FACP for Medicare patients.

blood draw	437
doctor visit	528
hospital care	64
inpatient care	64
lab tests	171
preventive care	21
vaccines	21

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark H. Gregory, MD, FACP.

**Gender**
Male	140
Female	139

**Ethnicity**
Non-Hispanic White	245
Black	21
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	108
From 75 to 84	112
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Mark H. Gregory, MD, FACP in 2020

Hypertension	62
High Cholesterol	44
Stroke	0
Ischemic Heart Disease	33
Depression	12
Chronic Kidney Disease	19
Asthma	7
Osteoperosis	7
Atrial Fibrilation	14
Heart Failure	15
Chronic Obstructive Pulmonary Disease	8
Diabetes	17
Dementia	12
Cancer	14

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Mark H. Gregory, MD, FACP treated as an internist in Saint Louis, MO during 2021 were blood draw, lab tests, hospital care and inpatient care.

Volume of procedures performed by Dr. Mark H. Gregory, MD, FACP for Medicare patients.

blood draw	495
doctor visit	548
hospital care	48
inpatient care	48
lab tests	236
preventive care	28
vaccines	28

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark H. Gregory, MD, FACP.

**Gender**
Male	130
Female	139

**Ethnicity**
Non-Hispanic White	234
Black	24
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	96
From 75 to 84	111
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Mark H. Gregory, MD, FACP in 2021

Hypertension	70
High Cholesterol	38
Stroke	0
Ischemic Heart Disease	32
Depression	11
Chronic Kidney Disease	19
Asthma	6
Osteoperosis	9
Atrial Fibrilation	13
Heart Failure	15
Chronic Obstructive Pulmonary Disease	8
Diabetes	17
Dementia	11
Cancer	14

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Mark H. Gregory, MD, FACP treated as an internist in Saint Louis, MO during 2022 were blood draw, lab tests, preventive care and vaccines.

Volume of procedures performed by Dr. Mark H. Gregory, MD, FACP for Medicare patients.

blood draw	449
doctor visit	514
hospital care	32
inpatient care	32
lab tests	220
preventive care	115
vaccines	115

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark H. Gregory, MD, FACP.

**Gender**
Male	132
Female	133

**Ethnicity**
Non-Hispanic White	233
Black	18
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	94
From 75 to 84	116
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Mark H. Gregory, MD, FACP in 2022

Hypertension	75
High Cholesterol	62
Stroke	11
Ischemic Heart Disease	32
Depression	14
Chronic Kidney Disease	16
Asthma	9
Osteoperosis	12
Atrial Fibrilation	21
Heart Failure	13
Chronic Obstructive Pulmonary Disease	9
Diabetes	15
Dementia	7
Cancer	20

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. Mark H. Gregory, MD, FACP for Medicare patients.

The highest averages for the top procedures that Dr. Mark H. Gregory, MD, FACP treated as an internist in Saint Louis, MO were lab tests, blood draw, thyroid function tests and preventive care.

blood draw	454
diabetes management	74
doctor visit	715
hospital care	114
inpatient care	114
lab tests	514
musculoskeletal imaging	13
nursing home care	204
preventive care	208
thoracic (chest) imaging	30
thyroid function tests	315
vaccines	119
X-rays	43

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. Mark H. Gregory, MD, FACP.

**Gender**
Male	145
Female	158

**Ethnicity**
Black / African American	5
Asian / Pacific Islander	0
Non-Hispanic White	255
Hispanic	0
Native American / Alaskan Native	0
Other	0

**Age**
75 to 84	115
85 and over	17
Less than 65	8
65 to 74	118

Average of Total of Conditions of Medicare patients treated by Dr. Mark H. Gregory, MD, FACP From 2012 - 2022

The highest averages of the most common conditions of Medicare patients that Dr. Mark H. Gregory, MD, FACP treated were hypertension, high cholesterol, ischemic heart disease and diabetes.

Hypertension	59
High Cholesterol	41
Stroke	4
Ischemic Heart Disease	30
Depression	14
Chronic Kidney Disease	18
Asthma	6
Osteoporosis	7
Heart Failure	14
Chronic Obstructive Pulmonary Disease	6
Diabetes	21
Atrial Fibrillation	13
Cancer	14
Dementia	9

Education & Training

Dr. Mark H. Gregory, MD, FACP graduated from University of Vermont College of Medicine in 1986. He completed residency at West Suburban Medical Center. He is certified by the Board Certification: Internal Medicine and has a state license in Missouri.

Medical School: University of Vermont College of Medicine (1986)

Residency: West Suburban Medical Center (1989)

Board Certification: Board Certification: Internal Medicine

Licensed In: Missouri

Affiliations & Hospitals

Dr. Mark H. Gregory, MD, FACP is associated with these hospitals and organizations:

BJC HealthCare

Ratings & Reviews

Dr. Mark H. Gregory, MD, FACP has an exceptional overall rating with an average of 5.0 out of 5 stars based on 4 ratings. We collect ratings and reviews of Dr. Mark H. Gregory, MD, FACP from all over the web to help you find the right in Saint Louis, MO.

Overall Rating

(4 Ratings)

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General Payments

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

**Payments by Company**
Boston Scientific Corporation	$2,609 WATCHMAN $2,542	Watchman Device $47	WATCHMAN Access System $21
AstraZeneca Pharmaceuticals LP	$2,158 FARXIGA $817	SYMBICORT $210	BYDUREON $199	BYDUREON PEN $173	BYDUREON WEEKLY $166	Other $593
Janssen Pharmaceuticals, Inc	$1,076 INVOKANA $590	XARELTO $452	INVOKAMET $12	$22
Novo Nordisk Inc	$959 Victoza $387	Levemir $191	Tresiba $116	Xultophy 100/3.6 $60	RYBELSUS $46	Other $158
Pfizer Inc.	$829 ELIQUIS $283	VIAGRA $142	LYRICA $117	EUCRISA $54	PAXLOVID $53	Other $180
Other	$5,656 Repatha $435	Vascepa $410	JARDIANCE $400	TOUJEO $369	ELIQUIS $316	Other $3,726

**Types of Payments**
Food and Beverage	$11,293
Travel and Lodging	$1,870
Education	$124

Biography

Dr. Mark Gregory's average patient rating is 5.0 stars (out of 5). He obtained his medical school training at the University of Vermont College of Medicine and performed his residency at West Suburban Medical Center. Dr. Gregory's distinctions include: Best Doctors in America and United States Air Force Achievement Medal for Expeditionary Medical Support. His professional affiliations include Missouri Baptist Medical Center and Barnes-Jewish Hospital. According to Yext, new patients are welcome to contact his office in Saint Louis, MO.

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Dr. Mark H. Gregory, MD, FACP

Office Locations

Noteworthy Medicare Patient Procedures Performed by Dr. Mark H. Gregory, MD, FACP in 2023

By Volume:

By Affordability:

By Volume:

By Volume:

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. Mark H. Gregory, MD, FACP in 2013

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

2014 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Mark H. Gregory, MD, FACP in 2014

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

2015 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Mark H. Gregory, MD, FACP in 2015

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

2016 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Mark H. Gregory, MD, FACP in 2016

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

2017 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Mark H. Gregory, MD, FACP in 2017

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

2018 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Mark H. Gregory, MD, FACP in 2018

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

2019 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Mark H. Gregory, MD, FACP in 2019

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

2020 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Mark H. Gregory, MD, FACP in 2020

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

2021 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Mark H. Gregory, MD, FACP in 2021

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

2022 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Mark H. Gregory, MD, FACP 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. Mark H. Gregory, MD, FACP From 2012 - 2022

Education & Training

Affiliations & Hospitals

Ratings & Reviews

General Payments

Biography

Other Providers in Saint Louis, MO