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Dr. Gretchen M. Ahrendt, MD

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(Dr. Gretchen Ahrendt, MD)

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Specializes in: General Surgery and Surgical Oncology (Cancer Surgery)

Johns Hopkins University School of Medicine (1990)

Professional interests include: breast-conserving surgery, breast cancer, breast issues

14300 Orchard Parkway
Westminster, CO 80023

(720) 627-4840

Dr. Gretchen M. Ahrendt, MD is a general surgeon in Lakewood, CO specializing in general surgery and surgical oncology (cancer surgery). She graduated from Johns Hopkins University School of Medicine in 1990 and has 36 years of experience. Dr. Gretchen M. Ahrendt, MD is affiliated with CommonSpirit Health - Mountain Region and CATHOLIC HEALTH INITIATIVES COLORADO.

Office Locations

11700 W 2nd Place Mob 2 Suite 210
Lakewood, CO 80228

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500 W 144th Avenue Suite 130
Westminster, CO 80023

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CommonSpirit Health - Mountain Region

14300 Orchard Parkway
Westminster, CO 80023

(720) 627-4840

(720) 627-4841

open_in_new

In The News

“What's more, most women don't know to ask for it, according to Gretchen Ahrendt, the director of Surgical Breast Services at Magee-Women's Hospital at the University of Pittsburgh Medical Center.”—"Here's What Angelina Jolie Didn't Say About Breast Cancer", Huff Post, May 2013

Noteworthy Medicare Patient Procedures Performed by Dr. Gretchen M. Ahrendt, MD in 2023

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

Top 25%

By Volume:

lymph node procedures

In 2012, Dr. Gretchen M. Ahrendt, MD performed more lymph node procedures procedures for Medicare patients than 75% of providers in related specialties within Colorado.

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. Gretchen M. Ahrendt, MD treated as a general surgeon in Lakewood, CO during 2012 were excision, lymph node procedures, breast procedures and cancer surgery.

Volume of procedures performed by Dr. Gretchen M. Ahrendt, MD for Medicare patients.

breast procedures	21
cancer surgery	21
diagnostic procedures	19
doctor visit	54
excision	40
lymph node procedures	37
open surgery	19

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Gretchen M. Ahrendt, MD treated as a general surgeon in Lakewood, CO during 2013 were lymph node procedures, excision, open surgery and diagnostic procedures.

Volume of procedures performed by Dr. Gretchen M. Ahrendt, MD for Medicare patients.

breast procedures	16
cancer surgery	16
diagnostic procedures	21
doctor visit	60
excision	37
lymph node procedures	43
open surgery	21

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Gretchen M. Ahrendt, MD.

**Gender**
Male	0
Female	61

**Ethnicity**
Non-Hispanic White	50
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	34
From 75 to 84	15
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Gretchen M. Ahrendt, MD in 2013

Hypertension	61
High Cholesterol	52
Stroke	0
Ischemic Heart Disease	0
Depression	23
Chronic Kidney Disease	0
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	0
Chronic Obstructive Pulmonary Disease	0
Diabetes	31
Dementia	0
Cancer	75

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Gretchen M. Ahrendt, MD treated as a general surgeon in Lakewood, CO during 2014 were excision, lymph node procedures, breast procedures and open surgery.

Volume of procedures performed by Dr. Gretchen M. Ahrendt, MD for Medicare patients.

breast procedures	24
cancer surgery	24
diagnostic procedures	24
doctor visit	79
excision	48
lymph node procedures	47
open surgery	24

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Gretchen M. Ahrendt, MD.

**Gender**
Male	0
Female	79

**Age**
From 65 to 74	38
From 75 to 84	21
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Gretchen M. Ahrendt, MD in 2014

Hypertension	62
High Cholesterol	51
Stroke	0
Ischemic Heart Disease	24
Depression	22
Chronic Kidney Disease	0
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	0
Chronic Obstructive Pulmonary Disease	0
Diabetes	15
Dementia	0
Cancer	75

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Gretchen M. Ahrendt, MD treated as a general surgeon in Lakewood, CO during 2015 were excision, lymph node procedures, breast procedures and cancer surgery.

Volume of procedures performed by Dr. Gretchen M. Ahrendt, MD for Medicare patients.

breast procedures	51
cancer surgery	51
diagnostic procedures	35
doctor visit	93
excision	86
lymph node procedures	72
open surgery	35

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Gretchen M. Ahrendt, MD.

**Gender**
Male	0
Female	174

**Age**
From 65 to 74	88
From 75 to 84	40
85 and over	24
Less than 65	22

Conditions of Medicare patients treated by Dr. Gretchen M. Ahrendt, MD in 2015

Hypertension	67
High Cholesterol	54
Stroke	0
Ischemic Heart Disease	21
Depression	25
Chronic Kidney Disease	0
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	13
Chronic Obstructive Pulmonary Disease	0
Diabetes	22
Dementia	0
Cancer	75

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Gretchen M. Ahrendt, MD treated as a general surgeon in Lakewood, CO during 2016 were lymph node procedures, excision, breast procedures and cancer surgery.

Volume of procedures performed by Dr. Gretchen M. Ahrendt, MD for Medicare patients.

breast procedures	33
cancer surgery	33
diagnostic procedures	29
doctor visit	64
excision	62
lymph node procedures	63
open surgery	29

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Gretchen M. Ahrendt, MD.

**Age**
From 65 to 74	47
From 75 to 84	15
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Gretchen M. Ahrendt, MD in 2016

Hypertension	65
High Cholesterol	49
Stroke	0
Ischemic Heart Disease	26
Depression	28
Chronic Kidney Disease	16
Asthma	15
Osteoperosis	16
Atrial Fibrilation	0
Heart Failure	0
Chronic Obstructive Pulmonary Disease	0
Diabetes	22
Dementia	0
Cancer	74

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Gretchen M. Ahrendt, MD treated as a general surgeon in Lakewood, CO during 2017 were excision, lymph node procedures, breast procedures and cancer surgery.

Volume of procedures performed by Dr. Gretchen M. Ahrendt, MD for Medicare patients.

breast procedures	55
cancer surgery	55
diagnostic procedures	32
doctor visit	58
excision	87
lymph node procedures	61
open surgery	32

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Gretchen M. Ahrendt, MD.

**Gender**
Male	0
Female	90

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

**Age**
From 65 to 74	55
From 75 to 84	23
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Gretchen M. Ahrendt, MD in 2017

Hypertension	63
High Cholesterol	36
Stroke	0
Ischemic Heart Disease	26
Depression	32
Chronic Kidney Disease	24
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	13
Chronic Obstructive Pulmonary Disease	0
Diabetes	29
Dementia	0
Cancer	75

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Gretchen M. Ahrendt, MD treated as a general surgeon in Lakewood, CO during 2018 were excision, lymph node procedures, breast procedures and cancer surgery.

Volume of procedures performed by Dr. Gretchen M. Ahrendt, MD for Medicare patients.

breast procedures	46
cancer surgery	46
diagnostic procedures	34
doctor visit	101
excision	80
lymph node procedures	64
open surgery	34

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Gretchen M. Ahrendt, MD.

**Gender**
Male	0
Female	91

**Ethnicity**
Non-Hispanic White	69
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

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

Conditions of Medicare patients treated by Dr. Gretchen M. Ahrendt, MD in 2018

Hypertension	67
High Cholesterol	41
Stroke	0
Ischemic Heart Disease	26
Depression	34
Chronic Kidney Disease	24
Asthma	12
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	14
Chronic Obstructive Pulmonary Disease	18
Diabetes	31
Dementia	0
Cancer	75

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Gretchen M. Ahrendt, MD treated as a general surgeon in Lakewood, CO during 2019 were excision, lymph node procedures, breast procedures and cancer surgery.

Volume of procedures performed by Dr. Gretchen M. Ahrendt, MD for Medicare patients.

breast procedures	25
cancer surgery	25
diagnostic procedures	18
doctor visit	62
excision	43
lymph node procedures	35
open surgery	18

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Gretchen M. Ahrendt, MD.

**Ethnicity**
Non-Hispanic White	59
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	46
From 75 to 84	14
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Gretchen M. Ahrendt, MD in 2019

Hypertension	66
High Cholesterol	49
Stroke	0
Ischemic Heart Disease	25
Depression	44
Chronic Kidney Disease	27
Asthma	20
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	0
Chronic Obstructive Pulmonary Disease	0
Diabetes	24
Dementia	0
Cancer	75

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Gretchen M. Ahrendt, MD treated as a general surgeon in Lakewood, CO during 2020 were excision, lymph node procedures, breast procedures and cancer surgery.

Volume of procedures performed by Dr. Gretchen M. Ahrendt, MD for Medicare patients.

breast procedures	30
cancer surgery	30
diagnostic procedures	19
doctor visit	84
excision	49
lymph node procedures	39
open surgery	19

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Gretchen M. Ahrendt, MD.

**Ethnicity**
Non-Hispanic White	61
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	42
From 75 to 84	19
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Gretchen M. Ahrendt, MD in 2020

Hypertension	61
High Cholesterol	49
Stroke	0
Ischemic Heart Disease	33
Depression	32
Chronic Kidney Disease	32
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	16
Chronic Obstructive Pulmonary Disease	0
Diabetes	15
Dementia	0
Cancer	75

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Gretchen M. Ahrendt, MD treated as a general surgeon in Lakewood, CO during 2021 were excision, lymph node procedures, breast procedures and cancer surgery.

Volume of procedures performed by Dr. Gretchen M. Ahrendt, MD for Medicare patients.

breast procedures	44
cancer surgery	44
diagnostic procedures	21
doctor visit	89
excision	65
lymph node procedures	45
open surgery	21

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Gretchen M. Ahrendt, MD.

**Age**
From 65 to 74	54
From 75 to 84	0
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Gretchen M. Ahrendt, MD in 2021

Hypertension	54
High Cholesterol	42
Stroke	0
Ischemic Heart Disease	22
Depression	23
Chronic Kidney Disease	22
Asthma	0
Osteoperosis	18
Atrial Fibrilation	0
Heart Failure	0
Chronic Obstructive Pulmonary Disease	0
Diabetes	14
Dementia	0
Cancer	75

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Gretchen M. Ahrendt, MD treated as a general surgeon in Lakewood, CO during 2022 were excision, lymph node procedures, breast procedures and cancer surgery.

Volume of procedures performed by Dr. Gretchen M. Ahrendt, MD for Medicare patients.

breast procedures	22
cancer surgery	22
diagnostic procedures	20
doctor visit	27
excision	42
lymph node procedures	32
open surgery	20

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Gretchen M. Ahrendt, MD.

**Gender**
Male	0
Female	69

**Ethnicity**
Non-Hispanic White	58
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	35
From 75 to 84	20
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Gretchen M. Ahrendt, MD in 2022

Hypertension	51
High Cholesterol	54
Stroke	0
Ischemic Heart Disease	16
Depression	17
Chronic Kidney Disease	0
Asthma	17
Osteoperosis	26
Atrial Fibrilation	0
Heart Failure	0
Chronic Obstructive Pulmonary Disease	0
Diabetes	16
Dementia	0
Cancer	75

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. Gretchen M. Ahrendt, MD for Medicare patients.

The highest averages for the top procedures that Dr. Gretchen M. Ahrendt, MD treated as a general surgeon in Lakewood, CO were excision, lymph node procedures, breast procedures and cancer surgery.

breast procedures	33
cancer surgery	33
diagnostic procedures	24
doctor visit	70
excision	58
lymph node procedures	48
open surgery	24

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. Gretchen M. Ahrendt, MD.

**Gender**
Male	0
Female	51

**Ethnicity**
Black / African American	0
Asian / Pacific Islander	0
Non-Hispanic White	33
Native American / Alaskan Native	0
Hispanic	0
Other	0

**Age**
75 to 84	15
85 and over	2
Less than 65	2
65 to 74	45

Average of Total of Conditions of Medicare patients treated by Dr. Gretchen M. Ahrendt, MD From 2012 - 2022

The highest averages of the most common conditions of Medicare patients that Dr. Gretchen M. Ahrendt, MD treated were cancer, hypertension, high cholesterol and depression.

Hypertension	56
High Cholesterol	43
Stroke	0
Ischemic Heart Disease	19
Depression	25
Chronic Kidney Disease	13
Asthma	5
Osteoporosis	5
Heart Failure	5
Chronic Obstructive Pulmonary Disease	1
Diabetes	19
Atrial Fibrillation	0
Dementia	0
Cancer	68

Education & Training

Dr. Gretchen M. Ahrendt, MD graduated from Johns Hopkins University School of Medicine in 1990. She completed residency at Johns Hopkins University Affiliated Hospitals. She is certified by the American Board of Surgery and has a state license in Pennsylvania.

Medical School: Johns Hopkins University School of Medicine (1990)

Residency: Johns Hopkins University Affiliated Hospitals

Board Certification: American Board of Surgery

Licensed In: Pennsylvania

Affiliations & Hospitals

Dr. Gretchen M. Ahrendt, MD is associated with these hospitals and organizations:

CommonSpirit Health - Mountain Region

CATHOLIC HEALTH INITIATIVES COLORADO

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General Payments

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

**Payments by Company**
Endomagnetics Ltd	$4,188 $4,188
iCAD, Inc	$696 Axxent Controller $696
Elucent Medical	$27 $27
Musculoskeletal Transplant Foundation Inc.	$10 $10

**Types of Payments**
Travel and Lodging	$3,275
Food and Beverage	$1,368
Entertainment	$279

Biography

Dr. Gretchen Ahrendt, who practices in Aurora, CO, Westminster, CO, and Lakewood, CO, is a medical specialist in general surgery and surgical oncology (cancer surgery). Her clinical interests include breast cancer and breast-conserving surgery. She attended Johns Hopkins University School of Medicine and then went on to complete her residency at a hospital affiliated with Johns Hopkins University. Dr. Ahrendt is affiliated with CommonSpirit Health - Mountain Region. She has an open panel in Westminster, CO according to Doctor.com.