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Dr. Gregory Grimberg, MD

Accepting New Patients

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Specializes in: Bariatric Surgery and General Surgery
SUNY Downstate Medical Center College of Medicine
Professional interests include: robotic surgery, weight loss surgery (bariatric surgery)
4940 Eastern Avenue Room 3933d
Baltimore, MD 21224

Dr. Gregory Grimberg, MD is a bariatric surgeon in Mason City, IA specializing in bariatric surgery and general surgery. He graduated from SUNY Downstate Medical Center College of Medicine. Dr. Gregory Grimberg, MD is affiliated with Mason City Clinic, MercyOne, NORTH IOWA MERCY CLINICS and MASON CITY CLINIC PC.

View Doctor's Full Profile (410) 550-6875

Office Locations

Mason City Clinic

250 S. Crescent Drive
Mason City, IA 50401
(641) 494-5200
(641) 494-5403
open_in_new
4940 Eastern Avenue Room 3933d
Baltimore, MD 21224
(410) 550-6875
(410) 550-1822
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MercyOne

910 N Eisenhower Avenue
Mason City, IA 50401
(641) 428-2400
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Some issues Dr. Gregory Grimberg, MD can help you with:

Robotic Surgery

Robotic surgery is a type of minimally invasive surgery, using a tiny opening to get inside the body instead of making a large cut. It uses small tools attached to a thin robotic arm, which is controlled by the surgeon. Robotic surgery may be referred to by the specific kind of robot that is used. The most advanced robot currently in use is called the da Vinci, and surgery using it is sometimes called da Vinci surgery.

There are many benefits to robotic surgery, both for the patient and the surgeon. Robotic surgery allows for more precise movements and increased control during very delicate surgical procedures. This makes performing surgery accurately much easier for surgeons and reduces fatigue. The smaller 'hand' of the robot can enter the body via a much smaller opening, which reduces the risk of infection and scarring and leads to a faster recovery. The robotic hands also contain tiny moveable cameras among their tools, giving surgeons a much closer view of the procedure than would be possible with traditional surgery.

Weight Loss Surgery (Bariatric Surgery)

Bariatric or weight-loss surgery is a surgical procedure performed to help significantly obese patients lose weight when more traditional methods, such as dieting and exercise, have not helped. Depending on the type, these surgeries change the gastrointestinal tract to limit how much food can be eaten and also change how food is absorbed by the body. Of the various bariatric surgeries available, the most common is gastric bypass.

By far the most common of the gastric bypass surgeries is called Roux-en-Y. During this surgery, part of the stomach and small intestine are detached from the gastrointestinal tract, in order to make the tract smaller. The surgeon divides the stomach into two parts. The working stomach, at the end of the esophagus, is now tiny - only the size of a walnut. This makes patients feel full after eating a small amount of food. Then the small intestine is also divided, and after bypassing a section of the small intestine to reduce food absorption, the intestine is attached to the small stomach pouch. The patient now has a working stomach and intestine like before, only much smaller.

Because gastric bypass is used to treat extreme obesity, it can reduce the risk of some of the problems associated with obesity. Gastric bypass can help treat or reduce the risk for such conditions as heart disease, high blood pressure, sleep apnea, and type 2 diabetes. However, it is a major surgery and also carries risks itself. Any surgery can lead to infection, bleeding, or blood clots, and weight loss surgery in particular carries risks of leaks in the gastrointestinal system, malnutrition, bowel obstructions, and vomiting.

Typically patients are considered candidates for gastric bypass surgery if they have a BMI greater than 40, or sometimes if they have a BMI between 35 and 40 but are suffering from obesity-related illnesses such as diabetes. The outlook is generally good, with most patients losing between 50-75% of their excess weight in 1-2 years. However, patients must follow strict diet guidelines so that the stomach can heal, starting with no food at all, then followed by a liquid diet for some time. For many severely obese patients who have tried strict diets before without success, gastric bypass surgery is the tool that allows them to finally achieve their weight loss and health goals.

Noteworthy Medicare Patient Procedures Performed by Dr. Gregory Grimberg, MD in 2023

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

Top 5%

By Volume:

diagnostic upper endoscopy
EGD with biopsy
EGD with lesion removal
esophageal manometry
gastrointestinal procedures
hernia surgery
laparoscopic paraesophageal hernia repair
minimally invasive procedures
therapeutic upper endoscopy
upper endoscopy
wireless esophageal pH monitoring

By Affordability:

gastrointestinal motility tests
wireless esophageal pH monitoring

In 2023, among providers in related specialties within Iowa, Dr. Gregory Grimberg, MD performed more diagnostic upper endoscopy, EGD with biopsy, EGD with lesion removal, esophageal manometry, gastrointestinal procedures, hernia surgery, laparoscopic paraesophageal hernia repair, minimally invasive procedures, therapeutic upper endoscopy, upper endoscopy, and wireless esophageal pH monitoring (Bravo test) procedures for Medicare patients than 95% of them and he also had a list price for gastrointestinal motility tests, and wireless esophageal pH monitoring (Bravo test) 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:

inpatient hospital care

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

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Gregory Grimberg, MD treated as a bariatric surgeon in Mason City, IA during 2019 were hospital care and inpatient care.

Volume of procedures performed by Dr. Gregory Grimberg, MD for Medicare patients.

hospital care 13
inpatient care 13

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Gregory Grimberg, MD.

Ethnicity
Non-Hispanic White 0
Black 13
Hispanic 0
Asian 0
Other 0
Native American 0

Conditions of Medicare patients treated by Dr. Gregory Grimberg, MD in 2019

The most common conditions of Medicare patients that Dr. Gregory Grimberg, MD treated during 2019 were hypertension, depression, high cholesterol and ischemic heart disease.

Hypertension 75
High Cholesterol 63
Stroke 0
Ischemic Heart Disease 56
Depression 74
Chronic Kidney Disease 52
Asthma 0
Osteoperosis 0
Atrial Fibrilation 0
Heart Failure 0
Chronic Obstructive Pulmonary Disease 0
Diabetes 0
Dementia 0
Cancer 0

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Gregory Grimberg, MD treated as a bariatric surgeon in Mason City, IA during 2020 were hospital care and inpatient care.

Volume of procedures performed by Dr. Gregory Grimberg, MD for Medicare patients.

doctor visit 11
hospital care 24
inpatient care 24

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Gregory Grimberg, MD.

Gender
Male 24
Female 48
Age
From 65 to 74 29
From 75 to 84 0
85 and over 0
Less than 65 19

Conditions of Medicare patients treated by Dr. Gregory Grimberg, MD in 2020

The most common conditions of Medicare patients that Dr. Gregory Grimberg, MD treated during 2020 were hypertension, high cholesterol, chronic kidney disease and depression.

Hypertension 72
High Cholesterol 63
Stroke 0
Ischemic Heart Disease 42
Depression 42
Chronic Kidney Disease 46
Asthma 0
Osteoperosis 0
Atrial Fibrilation 21
Heart Failure 31
Chronic Obstructive Pulmonary Disease 19
Diabetes 32
Dementia 0
Cancer 0

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Gregory Grimberg, MD treated as a bariatric surgeon in Mason City, IA during 2021 were hospital care, inpatient care, gastrointestinal procedures and minimally invasive procedures.

Volume of procedures performed by Dr. Gregory Grimberg, MD for Medicare patients.

diagnostic procedures 43
doctor visit 134
gastrointestinal procedures 107
hospital care 133
inpatient care 133
manometry 18
minimally invasive procedures 67
removal of lesion (e.g. growth) 43

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Gregory Grimberg, MD.

Gender
Male 89
Female 112
Age
From 65 to 74 84
From 75 to 84 56
85 and over 26
Less than 65 35

Conditions of Medicare patients treated by Dr. Gregory Grimberg, MD in 2021

The most common conditions of Medicare patients that Dr. Gregory Grimberg, MD treated during 2021 were hypertension, high cholesterol, ischemic heart disease and depression.

Hypertension 75
High Cholesterol 68
Stroke 0
Ischemic Heart Disease 47
Depression 44
Chronic Kidney Disease 43
Asthma 11
Osteoperosis 12
Atrial Fibrilation 16
Heart Failure 30
Chronic Obstructive Pulmonary Disease 17
Diabetes 34
Dementia 15
Cancer 17

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Gregory Grimberg, MD treated as a bariatric surgeon in Mason City, IA during 2022 were gastrointestinal procedures, hospital care, inpatient care and minimally invasive procedures.

Volume of procedures performed by Dr. Gregory Grimberg, MD for Medicare patients.

diagnostic procedures 85
doctor visit 170
gastrointestinal procedures 186
hospital care 125
inpatient care 125
manometry 34
minimally invasive procedures 118
removal of lesion (e.g. growth) 74

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Gregory Grimberg, MD.

Gender
Male 76
Female 95
Age
From 65 to 74 70
From 75 to 84 55
85 and over 18
Less than 65 28

Conditions of Medicare patients treated by Dr. Gregory Grimberg, MD in 2022

The most common conditions of Medicare patients that Dr. Gregory Grimberg, MD treated during 2022 were high cholesterol, hypertension, diabetes and atrial fibrilation.

Hypertension 75
High Cholesterol 75
Stroke 8
Ischemic Heart Disease 36
Depression 36
Chronic Kidney Disease 32
Asthma 17
Osteoperosis 15
Atrial Fibrilation 36
Heart Failure 35
Chronic Obstructive Pulmonary Disease 28
Diabetes 37
Dementia 8
Cancer 22

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

The top procedures that Dr. Gregory Grimberg, MD treated as a bariatric surgeon in Mason City, IA during 2023 were hospital care, inpatient care, gastrointestinal procedures and minimally invasive procedures.

Volume of procedures performed by Dr. Gregory Grimberg, MD for Medicare patients.

diagnostic procedures 84
doctor visit 148
gastrointestinal procedures 190
hospital care 223
inpatient care 223
manometry 33
minimally invasive procedures 124
removal of lesion (e.g. growth) 84

2023 Medicare Patient Data

Information about Medicare patients treated by Dr. Gregory Grimberg, MD.

Gender
Male 61
Female 85
Age
From 65 to 74 56
From 75 to 84 45
85 and over 21
Less than 65 24

Conditions of Medicare patients treated by Dr. Gregory Grimberg, MD in 2023

The most common conditions of Medicare patients that Dr. Gregory Grimberg, MD treated during 2023 were high cholesterol, hypertension, depression and ischemic heart disease.

Hypertension 75
High Cholesterol 75
Stroke 15
Ischemic Heart Disease 41
Depression 49
Chronic Kidney Disease 31
Asthma 16
Osteoperosis 14
Atrial Fibrilation 36
Heart Failure 38
Chronic Obstructive Pulmonary Disease 23
Diabetes 35
Dementia 8
Cancer 21

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2019 - 2023

Volume of procedures performed by Dr. Gregory Grimberg, MD for Medicare patients.

The highest averages for the top procedures that Dr. Gregory Grimberg, MD treated as a bariatric surgeon in Mason City, IA were gastrointestinal procedures, minimally invasive procedures, hospital care and inpatient care.

diagnostic procedures 70
doctor visit 115
gastrointestinal procedures 161
hospital care 103
inpatient care 103
manometry 28
minimally invasive procedures 103
removal of lesion (e.g. growth) 67

Average Medicare Patient Data From 2019 - 2023

Information about Medicare patients treated by Dr. Gregory Grimberg, MD.

Gender
Male 50
Female 68
Ethnicity
Black / African American 2
Asian / Pacific Islander 0
Non-Hispanic White 0
Hispanic 0
Native American / Alaskan Native 0
Other 0
Age
75 to 84 31
85 and over 13
Less than 65 21
65 to 74 47

Average of Total of Conditions of Medicare patients treated by Dr. Gregory Grimberg, MD From 2019 - 2023

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

Hypertension 74
High Cholesterol 68
Stroke 4
Ischemic Heart Disease 44
Depression 49
Chronic Kidney Disease 40
Asthma 8
Osteoporosis 8
Heart Failure 26
Chronic Obstructive Pulmonary Disease 17
Diabetes 27
Atrial Fibrillation 21
Dementia 6
Cancer 12

Education & Training

Dr. Gregory Grimberg, MD graduated from SUNY Downstate Medical Center College of Medicine. He completed residency at UMDNJ-Robert Wood Johnson Medical School Affiliated Hospitals. He is certified by the General Surgery, American Board of Surgery and has a state license in Maryland.

Medical School: SUNY Downstate Medical Center College of Medicine

Residency: UMDNJ-Robert Wood Johnson Medical School Affiliated Hospitals

Board Certification: General Surgery, American Board of Surgery

Licensed In: Maryland

Affiliations & Hospitals

Dr. Gregory Grimberg, MD is associated with these hospitals and organizations:

Mason City Clinic
MercyOne
NORTH IOWA MERCY CLINICS
MASON CITY CLINIC PC

Ratings & Reviews

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General Payments

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

Payments by Company
Intuitive Surgical, Inc. $2,409 Da Vinci Surgical System
$2,409
Medtronic, Inc. $151 Sonicision
$109 		V-Loc 180
$25 		PillCam
$17
Ethicon US, LLC $133 LINX Reflux Management System
$107
$26
Bayer HealthCare Pharmaceuticals Inc. $125 Kerendia
$125
Zimmer Biomet Holdings, Inc. $86 AdvantageRib
$86
Other $221 Aeon Endostapler
$55 		SPYGLASS
$30 		GATTEX
$29 		SPY-PHI SYSTEM
$23 		NeXus
$22 		Other
$63
Types of Payments
Education $2,000
Food and Beverage $1,125

Biography

Dr. Gregory Grimberg is a specialist in general surgery and bariatric surgery. Dr. Grimberg's clinical interests include stomach problems, gallbladder removal surgery (cholecystectomy), and upper endoscopy. His hospital/clinic affiliations include MercyOne and Mason City Clinic. He studied medicine at SUNY Downstate Medical Center College of Medicine. He trained at a hospital affiliated with UMDNJ-New Jersey Medical School and a hospital affiliated with UMDNJ-Robert Wood Johnson Medical School for residency. According to MercyOne, new patients are welcome to contact Dr. Grimberg's office in Mason City, IA.

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