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Dr. Geoffrey J. Flattmann, MD, FACS

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Specializes in: General Surgery

Louisiana State University Health Sciences Center

142 Jeff Davis Boulevard Suite A
Natchez, MS 39120

(601) 445-8667

Dr. Geoffrey J. Flattmann, MD, FACS is a general surgeon in Natchez, MS specializing in general surgery. He graduated from Louisiana State University Health Sciences Center. Dr. Geoffrey J. Flattmann, MD, FACS is affiliated with Merit Health.

Office Locations

Merit Health

142 Jeff Davis Boulevard Suite A
Natchez, MS 39120

(601) 445-8667

(601) 445-8767

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In The News (see more mentions in the news)

“It also helped being treated in Natchez, where she had been diagnosed, had a double mastectomy performed by Dr. Geoffrey Flattmann and reconstruction by Dr. David Steckler and post-surgical...”—"Breast friends : Natchez women bond through cancer journeys", The Natchez Democrat, October 2025

“Dr. Geoffrey Flattmann reached a milestone this week, and it's one he's excited to share with the community.”—"Natchez surgeon completes 1000th robotic-assisted surgery", The Natchez Democrat, November 2023

“Those are the top two priorities for Kevin Samrow as CEO of Merit Health... WOODVILLE - Residents are invited to take part in a discussion to shape the future of Downtown Woodville... NATCHEZ...”—"Business", The Natchez Democrat, November 2023

Noteworthy Medicare Patient Procedures Performed by Dr. Geoffrey J. Flattmann, MD, FACS in 2023

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

Top 25%

By Volume:

inpatient hospital care

In 2012, Dr. Geoffrey J. Flattmann, MD, FACS performed more inpatient hospital care (for patient admitted to hospital) procedures for Medicare patients than 75% of providers in related specialties within Mississippi.

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. Geoffrey J. Flattmann, MD, FACS treated as a general surgeon in Natchez, MS during 2012 were inpatient care, hospital care, open surgery and breast procedures.

Volume of procedures performed by Dr. Geoffrey J. Flattmann, MD, FACS for Medicare patients.

abdominal surgery	40
aspiration	34
breast procedures	81
catheterization	38
device removal	11
diagnostic procedures	49
doctor visit	522
excision	49
gastrointestinal procedures	40
hospital care	457
image guided procedures	32
inpatient care	457
lymph node procedures	11
minimally invasive procedures	32
nuclear scan	11
open surgery	89

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Geoffrey J. Flattmann, MD, FACS treated as a general surgeon in Natchez, MS during 2013 were inpatient care, hospital care, open surgery and breast procedures.

Volume of procedures performed by Dr. Geoffrey J. Flattmann, MD, FACS for Medicare patients.

abdominal surgery	36
abscess drainage	14
aspiration	55
breast procedures	81
catheterization	31
device removal	23
diagnostic procedures	72
doctor visit	605
excision	56
gastrointestinal procedures	36
hospital care	419
image guided procedures	52
incision and drainage	14
inpatient care	419
minimally invasive procedures	52
minor procedures	27
open surgery	92
soft tissue surgery	14

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Geoffrey J. Flattmann, MD, FACS.

**Gender**
Male	178
Female	391

**Ethnicity**
Non-Hispanic White	300
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	223
From 75 to 84	152
85 and over	65
Less than 65	129

Conditions of Medicare patients treated by Dr. Geoffrey J. Flattmann, MD, FACS in 2013

Hypertension	75
High Cholesterol	53
Stroke	6
Ischemic Heart Disease	40
Depression	20
Chronic Kidney Disease	19
Asthma	8
Osteoperosis	8
Atrial Fibrilation	7
Heart Failure	29
Chronic Obstructive Pulmonary Disease	19
Diabetes	40
Dementia	13
Cancer	25

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Geoffrey J. Flattmann, MD, FACS treated as a general surgeon in Natchez, MS during 2014 were inpatient care, hospital care, breast procedures and open surgery.

Volume of procedures performed by Dr. Geoffrey J. Flattmann, MD, FACS for Medicare patients.

abdominal surgery	30
abscess drainage	16
aspiration	47
breast procedures	75
cancer surgery	18
catheterization	33
device removal	21
diagnostic procedures	51
doctor visit	529
excision	57
gastrointestinal procedures	30
hospital care	417
image guided procedures	30
incision and drainage	16
inpatient care	417
lymph node procedures	14
minimally invasive procedures	30
minor procedures	12
nuclear scan	14
open surgery	69
soft tissue surgery	16

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Geoffrey J. Flattmann, MD, FACS.

**Gender**
Male	194
Female	326

**Ethnicity**
Non-Hispanic White	265
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	201
From 75 to 84	153
85 and over	50
Less than 65	116

Conditions of Medicare patients treated by Dr. Geoffrey J. Flattmann, MD, FACS in 2014

Hypertension	75
High Cholesterol	52
Stroke	7
Ischemic Heart Disease	44
Depression	21
Chronic Kidney Disease	21
Asthma	6
Osteoperosis	8
Atrial Fibrilation	8
Heart Failure	29
Chronic Obstructive Pulmonary Disease	17
Diabetes	41
Dementia	13
Cancer	26

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Geoffrey J. Flattmann, MD, FACS treated as a general surgeon in Natchez, MS during 2015 were inpatient care, hospital care, breast procedures and open surgery.

Volume of procedures performed by Dr. Geoffrey J. Flattmann, MD, FACS for Medicare patients.

abdominal surgery	20
aspiration	37
breast procedures	123
catheterization	28
debridement (removal of unhealthy tissue)	14
device removal	15
diagnostic procedures	76
doctor visit	570
excision	90
gastrointestinal procedures	20
hospital care	306
image guided procedures	47
inpatient care	306
minimally invasive procedures	47
open surgery	96

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Geoffrey J. Flattmann, MD, FACS.

**Gender**
Male	330
Female	708

**Ethnicity**
Non-Hispanic White	568
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	432
From 75 to 84	292
85 and over	106
Less than 65	208

Conditions of Medicare patients treated by Dr. Geoffrey J. Flattmann, MD, FACS in 2015

Hypertension	75
High Cholesterol	45
Stroke	9
Ischemic Heart Disease	40
Depression	24
Chronic Kidney Disease	26
Asthma	11
Osteoperosis	9
Atrial Fibrilation	9
Heart Failure	26
Chronic Obstructive Pulmonary Disease	15
Diabetes	38
Dementia	13
Cancer	26

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Geoffrey J. Flattmann, MD, FACS treated as a general surgeon in Natchez, MS during 2016 were inpatient care, hospital care, breast procedures and open surgery.

Volume of procedures performed by Dr. Geoffrey J. Flattmann, MD, FACS for Medicare patients.

abdominal surgery	15
aspiration	17
breast procedures	110
catheterization	33
device removal	15
diagnostic procedures	65
doctor visit	650
excision	65
gastrointestinal procedures	15
hospital care	294
image guided procedures	45
inpatient care	294
lymph node procedures	11
minimally invasive procedures	60
nuclear scan	11
open surgery	65

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Geoffrey J. Flattmann, MD, FACS.

**Gender**
Male	166
Female	399

**Ethnicity**
Non-Hispanic White	298
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	239
From 75 to 84	157
85 and over	53
Less than 65	116

Conditions of Medicare patients treated by Dr. Geoffrey J. Flattmann, MD, FACS in 2016

Hypertension	75
High Cholesterol	52
Stroke	7
Ischemic Heart Disease	40
Depression	21
Chronic Kidney Disease	31
Asthma	20
Osteoperosis	10
Atrial Fibrilation	8
Heart Failure	30
Chronic Obstructive Pulmonary Disease	18
Diabetes	38
Dementia	15
Cancer	24

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Geoffrey J. Flattmann, MD, FACS treated as a general surgeon in Natchez, MS during 2017 were inpatient care, hospital care, breast procedures and excision.

Volume of procedures performed by Dr. Geoffrey J. Flattmann, MD, FACS for Medicare patients.

abdominal surgery	13
aspiration	40
breast procedures	84
cancer surgery	14
catheterization	28
device removal	18
diagnostic procedures	44
doctor visit	595
excision	58
gastrointestinal procedures	25
hospital care	200
image guided procedures	26
inpatient care	200
minimally invasive procedures	51
open surgery	44

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Geoffrey J. Flattmann, MD, FACS.

**Gender**
Male	161
Female	317

**Ethnicity**
Non-Hispanic White	240
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	219
From 75 to 84	112
85 and over	47
Less than 65	100

Conditions of Medicare patients treated by Dr. Geoffrey J. Flattmann, MD, FACS in 2017

Hypertension	75
High Cholesterol	50
Stroke	8
Ischemic Heart Disease	42
Depression	24
Chronic Kidney Disease	29
Asthma	6
Osteoperosis	8
Atrial Fibrilation	6
Heart Failure	30
Chronic Obstructive Pulmonary Disease	17
Diabetes	42
Dementia	13
Cancer	25

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Geoffrey J. Flattmann, MD, FACS treated as a general surgeon in Natchez, MS during 2018 were inpatient care, hospital care, breast procedures and minimally invasive procedures.

Volume of procedures performed by Dr. Geoffrey J. Flattmann, MD, FACS for Medicare patients.

abdominal surgery	12
aspiration	22
breast procedures	44
catheterization	24
device removal	13
diagnostic procedures	24
doctor visit	618
excision	24
gastrointestinal procedures	12
hospital care	281
image guided procedures	20
inpatient care	281
minimally invasive procedures	32
open surgery	24

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Geoffrey J. Flattmann, MD, FACS.

**Gender**
Male	168
Female	337

**Ethnicity**
Non-Hispanic White	271
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	223
From 75 to 84	135
85 and over	62
Less than 65	85

Conditions of Medicare patients treated by Dr. Geoffrey J. Flattmann, MD, FACS in 2018

Hypertension	75
High Cholesterol	65
Stroke	9
Ischemic Heart Disease	48
Depression	20
Chronic Kidney Disease	33
Asthma	8
Osteoperosis	7
Atrial Fibrilation	9
Heart Failure	33
Chronic Obstructive Pulmonary Disease	16
Diabetes	38
Dementia	16
Cancer	25

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Geoffrey J. Flattmann, MD, FACS treated as a general surgeon in Natchez, MS during 2019 were inpatient care, hospital care, breast procedures and minimally invasive procedures.

Volume of procedures performed by Dr. Geoffrey J. Flattmann, MD, FACS for Medicare patients.

abdominal surgery	16
aspiration	27
breast procedures	84
cancer surgery	15
catheterization	36
device removal	13
diagnostic procedures	40
doctor visit	645
excision	55
gastrointestinal procedures	29
hospital care	274
image guided procedures	29
inpatient care	274
lymph node procedures	12
minimally invasive procedures	58
open surgery	40

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Geoffrey J. Flattmann, MD, FACS.

**Gender**
Male	189
Female	360

**Ethnicity**
Non-Hispanic White	275
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	247
From 75 to 84	149
85 and over	57
Less than 65	96

Conditions of Medicare patients treated by Dr. Geoffrey J. Flattmann, MD, FACS in 2019

Hypertension	75
High Cholesterol	59
Stroke	8
Ischemic Heart Disease	50
Depression	25
Chronic Kidney Disease	38
Asthma	5
Osteoperosis	7
Atrial Fibrilation	9
Heart Failure	33
Chronic Obstructive Pulmonary Disease	15
Diabetes	40
Dementia	17
Cancer	24

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Geoffrey J. Flattmann, MD, FACS treated as a general surgeon in Natchez, MS during 2020 were inpatient care, hospital care, catheterization and minimally invasive procedures.

Volume of procedures performed by Dr. Geoffrey J. Flattmann, MD, FACS for Medicare patients.

abdominal surgery	12
breast procedures	28
catheterization	50
debridement (removal of unhealthy tissue)	12
device removal	12
diagnostic procedures	14
doctor visit	452
excision	26
gastrointestinal procedures	25
hospital care	300
image guided procedures	14
inpatient care	300
minimally invasive procedures	39
open surgery	14
tracheal (windpipe) procedures	23

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Geoffrey J. Flattmann, MD, FACS.

**Gender**
Male	161
Female	292

**Ethnicity**
Non-Hispanic White	251
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	210
From 75 to 84	134
85 and over	45
Less than 65	64

Conditions of Medicare patients treated by Dr. Geoffrey J. Flattmann, MD, FACS in 2020

Hypertension	75
High Cholesterol	58
Stroke	6
Ischemic Heart Disease	46
Depression	25
Chronic Kidney Disease	41
Asthma	6
Osteoperosis	9
Atrial Fibrilation	9
Heart Failure	27
Chronic Obstructive Pulmonary Disease	16
Diabetes	42
Dementia	16
Cancer	21

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Geoffrey J. Flattmann, MD, FACS treated as a general surgeon in Natchez, MS during 2021 were hospital care, inpatient care, breast procedures and catheterization.

Volume of procedures performed by Dr. Geoffrey J. Flattmann, MD, FACS for Medicare patients.

aspiration	25
breast procedures	45
catheterization	25
diagnostic procedures	23
doctor visit	445
excision	23
hospital care	173
image guided procedures	22
inpatient care	173
minimally invasive procedures	22
open surgery	23

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Geoffrey J. Flattmann, MD, FACS.

**Gender**
Male	132
Female	273

**Ethnicity**
Non-Hispanic White	214
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	187
From 75 to 84	112
85 and over	35
Less than 65	71

Conditions of Medicare patients treated by Dr. Geoffrey J. Flattmann, MD, FACS in 2021

Hypertension	75
High Cholesterol	60
Stroke	6
Ischemic Heart Disease	41
Depression	26
Chronic Kidney Disease	38
Asthma	6
Osteoperosis	7
Atrial Fibrilation	10
Heart Failure	25
Chronic Obstructive Pulmonary Disease	12
Diabetes	40
Dementia	15
Cancer	21

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Geoffrey J. Flattmann, MD, FACS treated as a general surgeon in Natchez, MS during 2022 were hospital care, inpatient care, catheterization and minimally invasive procedures.

Volume of procedures performed by Dr. Geoffrey J. Flattmann, MD, FACS for Medicare patients.

abdominal surgery	12
catheterization	21
doctor visit	330
gastrointestinal procedures	12
hospital care	164
inpatient care	164
lymph node procedures	12
minimally invasive procedures	12

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Geoffrey J. Flattmann, MD, FACS.

**Gender**
Male	108
Female	224

**Ethnicity**
Non-Hispanic White	181
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	148
From 75 to 84	110
85 and over	30
Less than 65	44

Conditions of Medicare patients treated by Dr. Geoffrey J. Flattmann, MD, FACS in 2022

Hypertension	75
High Cholesterol	72
Stroke	9
Ischemic Heart Disease	34
Depression	26
Chronic Kidney Disease	24
Asthma	5
Osteoperosis	9
Atrial Fibrilation	17
Heart Failure	20
Chronic Obstructive Pulmonary Disease	16
Diabetes	35
Dementia	9
Cancer	30

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. Geoffrey J. Flattmann, MD, FACS for Medicare patients.

The highest averages for the top procedures that Dr. Geoffrey J. Flattmann, MD, FACS treated as a general surgeon in Natchez, MS were inpatient care, hospital care, breast procedures and open surgery.

abdominal surgery	20
abscess drainage	15
aspiration	33
breast procedures	75
cancer surgery	15
catheterization	31
debridement (removal of unhealthy tissue)	13
device removal	15
diagnostic procedures	45
doctor visit	541
excision	50
gastrointestinal procedures	24
hospital care	298
image guided procedures	31
incision and drainage	15
inpatient care	298
lymph node procedures	12
minimally invasive procedures	39
minor procedures	19
nuclear scan	12
open surgery	55
soft tissue surgery	15
tracheal (windpipe) procedures	23

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. Geoffrey J. Flattmann, MD, FACS.

**Gender**
Male	162
Female	329

**Ethnicity**
Black / African American	0
Asian / Pacific Islander	0
Non-Hispanic White	260
Native American / Alaskan Native	0
Hispanic	0
Other	0

**Age**
75 to 84	136
85 and over	50
Less than 65	93
65 to 74	211

Average of Total of Conditions of Medicare patients treated by Dr. Geoffrey J. Flattmann, MD, FACS From 2012 - 2022

The highest averages of the most common conditions of Medicare patients that Dr. Geoffrey J. Flattmann, MD, FACS treated were hypertension, high cholesterol, ischemic heart disease and diabetes.

Hypertension	68
High Cholesterol	51
Stroke	6
Ischemic Heart Disease	38
Depression	21
Chronic Kidney Disease	27
Asthma	7
Osteoporosis	7
Heart Failure	25
Chronic Obstructive Pulmonary Disease	14
Diabetes	35
Atrial Fibrillation	8
Dementia	12
Cancer	22

Education & Training

Dr. Geoffrey J. Flattmann, MD, FACS graduated from Louisiana State University Health Sciences Center. He completed residency at Louisiana State University Affiliated Hospitals. He is certified by the American Board of Surgery- General Surgery - General and has a state license in Mississippi.

Medical School: Louisiana State University Health Sciences Center

Residency: Louisiana State University Affiliated Hospitals

Board Certification: American Board of Surgery- General Surgery - General

Licensed In: Mississippi

Affiliations & Hospitals

Dr. Geoffrey J. Flattmann, MD, FACS is associated with these hospitals and organizations:

Merit Health

Ratings & Reviews

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General Payments

These charts describe general payments received by Dr. Geoffrey J. Flattmann, MD, FACS. Doctors may receive payments for a number of reasons, including meal compensation, travel compensation, and consulting.

**Payments by Company**
Intuitive Surgical, Inc.	$7,357 Da Vinci Surgical System $7,357
Pacira Pharmaceuticals Incorporated	$16 Exparel $16
Asensus Surgical, Inc.	$16 Senhance $16

**Types of Payments**
Education	$4,000
Travel and Lodging	$2,715
Food and Beverage	$632
Gift	$42

Biography

Dr. Geoffrey Flattmann's area of specialization is general surgery. He is professionally affiliated with Merit Health. Dr. Flattmann graduated from Louisiana State University School of Medicine in New Orleans. For his professional training, Dr. Flattmann completed a residency program at a hospital affiliated with Louisiana State University.

Select Year:

Dr. Geoffrey J. Flattmann, MD, FACS

Office Locations

In The News (see more mentions in the news)

Noteworthy Medicare Patient Procedures Performed by Dr. Geoffrey J. Flattmann, MD, FACS in 2023

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. Geoffrey J. Flattmann, MD, FACS in 2013

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

2014 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Geoffrey J. Flattmann, MD, FACS in 2014

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

2015 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Geoffrey J. Flattmann, MD, FACS in 2015

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

2016 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Geoffrey J. Flattmann, MD, FACS in 2016

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

2017 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Geoffrey J. Flattmann, MD, FACS in 2017

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

2018 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Geoffrey J. Flattmann, MD, FACS in 2018

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

2019 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Geoffrey J. Flattmann, MD, FACS in 2019

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

2020 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Geoffrey J. Flattmann, MD, FACS in 2020

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

2021 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Geoffrey J. Flattmann, MD, FACS in 2021

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

2022 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Geoffrey J. Flattmann, MD, FACS 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. Geoffrey J. Flattmann, MD, FACS From 2012 - 2022

Education & Training

Affiliations & Hospitals

Ratings & Reviews

General Payments

Biography

Other Providers in Natchez, MS