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Home > MO Providers > General Pediatricians

Dr. Gretchen E. Farmer, MD

(Gretchen Elizabeth Farmer, MD)

(58 Ratings)

Specializes in: General Pediatrics and Internal Medicine (Adult Medicine)

St. Louis University School of Medicine

1935 Prairie Dell Road Suite 400 Mercy Clinic Primary Care
Union, MO 63084

(636) 649-3085

Dr. Gretchen E. Farmer, MD is a pediatrician in Union, MO specializing in general pediatrics and internal medicine (adult medicine). She graduated from St. Louis University School of Medicine. Dr. Gretchen E. Farmer, MD is affiliated with Mercy Health System, Mercy Hospital Washington, Mercy Clinic Primary Care - Union and MERCY CLINIC EAST COMMUNITIES.

Office Locations

1935 Prairie Dell Road Suite 400 Mercy Clinic Primary Care
Union, MO 63084

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Noteworthy Medicare Patient Procedures Performed by Dr. Gretchen E. Farmer, MD in 2023

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

Top 5%

By Affordability:

lab tests

urinalysis

urine tests

In 2023, Dr. Gretchen E. Farmer, MD had a list price for lab tests, urinalysis, and urine tests that was lower than the list prices billed to Medicare by 95% of providers in related specialties within Missouri. 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.

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. Gretchen E. Farmer, MD treated as a pediatrician in Union, MO during 2012 were blood draw, lab tests, preventive care and hospital care.

Volume of procedures performed by Dr. Gretchen E. Farmer, MD for Medicare patients.

blood draw	210
diabetes management	17
doctor visit	411
hospital care	82
inpatient care	82
lab tests	192
preventive care	92
thoracic (chest) imaging	24
thyroid function tests	16
vaccines	49
X-rays	24

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Gretchen E. Farmer, MD treated as a pediatrician in Union, MO during 2013 were blood draw, preventive care, vaccines and hospital care.

Volume of procedures performed by Dr. Gretchen E. Farmer, MD for Medicare patients.

blood draw	197
doctor visit	390
hospital care	45
inpatient care	45
lab tests	19
preventive care	58
thoracic (chest) imaging	25
vaccines	58
X-rays	25

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Gretchen E. Farmer, MD.

**Gender**
Male	62
Female	93

**Ethnicity**
Non-Hispanic White	155
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	48
From 75 to 84	0
85 and over	0
Less than 65	55

Conditions of Medicare patients treated by Dr. Gretchen E. Farmer, MD in 2013

Hypertension	62
High Cholesterol	43
Stroke	0
Ischemic Heart Disease	37
Depression	35
Chronic Kidney Disease	26
Asthma	8
Osteoperosis	11
Atrial Fibrilation	10
Heart Failure	21
Chronic Obstructive Pulmonary Disease	28
Diabetes	35
Dementia	8
Cancer	9

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Gretchen E. Farmer, MD treated as a pediatrician in Union, MO during 2014 were blood draw, lab tests, preventive care and vaccines.

Volume of procedures performed by Dr. Gretchen E. Farmer, MD for Medicare patients.

blood draw	234
doctor visit	399
hospital care	50
inpatient care	50
lab tests	123
preventive care	71
thoracic (chest) imaging	13
vaccines	71
X-rays	13

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Gretchen E. Farmer, MD.

**Gender**
Male	67
Female	126

**Age**
From 65 to 74	64
From 75 to 84	0
85 and over	0
Less than 65	69

Conditions of Medicare patients treated by Dr. Gretchen E. Farmer, MD in 2014

Hypertension	61
High Cholesterol	47
Stroke	0
Ischemic Heart Disease	39
Depression	30
Chronic Kidney Disease	22
Asthma	11
Osteoperosis	13
Atrial Fibrilation	14
Heart Failure	21
Chronic Obstructive Pulmonary Disease	25
Diabetes	34
Dementia	7
Cancer	0

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Gretchen E. Farmer, MD treated as a pediatrician in Union, MO during 2015 were blood draw, lab tests, preventive care and vaccines.

Volume of procedures performed by Dr. Gretchen E. Farmer, MD for Medicare patients.

blood draw	225
doctor visit	369
hospital care	50
inpatient care	50
lab tests	114
preventive care	92
thoracic (chest) imaging	22
vaccines	92
X-rays	22

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Gretchen E. Farmer, MD.

**Gender**
Male	106
Female	216

**Age**
From 65 to 74	104
From 75 to 84	76
85 and over	28
Less than 65	114

Conditions of Medicare patients treated by Dr. Gretchen E. Farmer, MD in 2015

Hypertension	68
High Cholesterol	47
Stroke	0
Ischemic Heart Disease	37
Depression	39
Chronic Kidney Disease	24
Asthma	14
Osteoperosis	10
Atrial Fibrilation	12
Heart Failure	21
Chronic Obstructive Pulmonary Disease	25
Diabetes	34
Dementia	8
Cancer	8

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Gretchen E. Farmer, MD treated as a pediatrician in Union, MO during 2016 were blood draw, lab tests, preventive care and vaccines.

Volume of procedures performed by Dr. Gretchen E. Farmer, MD for Medicare patients.

blood draw	297
doctor visit	441
lab tests	146
preventive care	90
thoracic (chest) imaging	21
vaccines	90
X-rays	21

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Gretchen E. Farmer, MD.

**Gender**
Male	43
Female	109

**Age**
From 65 to 74	55
From 75 to 84	32
85 and over	12
Less than 65	53

Conditions of Medicare patients treated by Dr. Gretchen E. Farmer, MD in 2016

Hypertension	66
High Cholesterol	45
Stroke	0
Ischemic Heart Disease	34
Depression	32
Chronic Kidney Disease	26
Asthma	17
Osteoperosis	14
Atrial Fibrilation	8
Heart Failure	16
Chronic Obstructive Pulmonary Disease	18
Diabetes	30
Dementia	7
Cancer	0

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Gretchen E. Farmer, MD treated as a pediatrician in Union, MO during 2017 were blood draw, lab tests, preventive care and vaccines.

Volume of procedures performed by Dr. Gretchen E. Farmer, MD for Medicare patients.

blood draw	263
doctor visit	387
lab tests	86
preventive care	70
thoracic (chest) imaging	15
vaccines	70
X-rays	15

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Gretchen E. Farmer, MD.

**Gender**
Male	50
Female	106

**Age**
From 65 to 74	59
From 75 to 84	0
85 and over	0
Less than 65	56

Conditions of Medicare patients treated by Dr. Gretchen E. Farmer, MD in 2017

Hypertension	62
High Cholesterol	46
Stroke	0
Ischemic Heart Disease	30
Depression	29
Chronic Kidney Disease	26
Asthma	0
Osteoperosis	12
Atrial Fibrilation	10
Heart Failure	17
Chronic Obstructive Pulmonary Disease	17
Diabetes	33
Dementia	7
Cancer	7

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Gretchen E. Farmer, MD treated as a pediatrician in Union, MO during 2018 were blood draw, preventive care, vaccines and lab tests.

Volume of procedures performed by Dr. Gretchen E. Farmer, MD for Medicare patients.

blood draw	261
doctor visit	327
lab tests	20
preventive care	82
vaccines	82

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Gretchen E. Farmer, MD.

**Gender**
Male	44
Female	96

**Ethnicity**
Non-Hispanic White	140
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	57
From 75 to 84	0
85 and over	0
Less than 65	45

Conditions of Medicare patients treated by Dr. Gretchen E. Farmer, MD in 2018

Hypertension	53
High Cholesterol	51
Stroke	0
Ischemic Heart Disease	30
Depression	29
Chronic Kidney Disease	23
Asthma	0
Osteoperosis	0
Atrial Fibrilation	10
Heart Failure	16
Chronic Obstructive Pulmonary Disease	16
Diabetes	33
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Gretchen E. Farmer, MD treated as a pediatrician in Union, MO during 2019 were blood draw, preventive care, vaccines and lab tests.

Volume of procedures performed by Dr. Gretchen E. Farmer, MD for Medicare patients.

blood draw	225
doctor visit	272
lab tests	34
preventive care	50
vaccines	50

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Gretchen E. Farmer, MD.

**Gender**
Male	32
Female	86

**Age**
From 65 to 74	52
From 75 to 84	0
85 and over	0
Less than 65	32

Conditions of Medicare patients treated by Dr. Gretchen E. Farmer, MD in 2019

Hypertension	58
High Cholesterol	45
Stroke	0
Ischemic Heart Disease	29
Depression	27
Chronic Kidney Disease	22
Asthma	0
Osteoperosis	13
Atrial Fibrilation	0
Heart Failure	9
Chronic Obstructive Pulmonary Disease	11
Diabetes	33
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Gretchen E. Farmer, MD treated as a pediatrician in Union, MO during 2020 were blood draw, preventive care, vaccines and lab tests.

Volume of procedures performed by Dr. Gretchen E. Farmer, MD for Medicare patients.

blood draw	136
doctor visit	205
lab tests	14
preventive care	36
vaccines	36

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Gretchen E. Farmer, MD.

**Gender**
Male	33
Female	66

**Age**
From 65 to 74	42
From 75 to 84	0
85 and over	0
Less than 65	29

Conditions of Medicare patients treated by Dr. Gretchen E. Farmer, MD in 2020

Hypertension	54
High Cholesterol	42
Stroke	0
Ischemic Heart Disease	29
Depression	26
Chronic Kidney Disease	23
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	12
Chronic Obstructive Pulmonary Disease	12
Diabetes	29
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Gretchen E. Farmer, MD treated as a pediatrician in Union, MO during 2021 were blood draw, preventive care, vaccines and lab tests.

Volume of procedures performed by Dr. Gretchen E. Farmer, MD for Medicare patients.

blood draw	118
doctor visit	196
lab tests	15
preventive care	30
vaccines	30

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Gretchen E. Farmer, MD.

**Gender**
Male	31
Female	55

**Age**
From 65 to 74	32
From 75 to 84	0
85 and over	0
Less than 65	27

Conditions of Medicare patients treated by Dr. Gretchen E. Farmer, MD in 2021

Hypertension	56
High Cholesterol	45
Stroke	0
Ischemic Heart Disease	30
Depression	31
Chronic Kidney Disease	27
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	20
Chronic Obstructive Pulmonary Disease	0
Diabetes	30
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Gretchen E. Farmer, MD treated as a pediatrician in Union, MO during 2022 were blood draw, preventive care, vaccines and lab tests.

Volume of procedures performed by Dr. Gretchen E. Farmer, MD for Medicare patients.

blood draw	136
doctor visit	192
lab tests	19
preventive care	24
vaccines	24

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Gretchen E. Farmer, MD.

**Gender**
Male	34
Female	57

**Age**
From 65 to 74	34
From 75 to 84	0
85 and over	0
Less than 65	29

Conditions of Medicare patients treated by Dr. Gretchen E. Farmer, MD in 2022

Hypertension	64
High Cholesterol	62
Stroke	0
Ischemic Heart Disease	24
Depression	25
Chronic Kidney Disease	20
Asthma	0
Osteoperosis	13
Atrial Fibrilation	14
Heart Failure	12
Chronic Obstructive Pulmonary Disease	14
Diabetes	27
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. Gretchen E. Farmer, MD for Medicare patients.

The highest averages for the top procedures that Dr. Gretchen E. Farmer, MD treated as a pediatrician in Union, MO were blood draw, lab tests, preventive care and vaccines.

blood draw	209
diabetes management	17
doctor visit	326
hospital care	56
inpatient care	56
lab tests	71
preventive care	63
thoracic (chest) imaging	20
thyroid function tests	16
vaccines	59
X-rays	20

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. Gretchen E. Farmer, MD.

**Gender**
Male	45
Female	91

**Ethnicity**
Black / African American	0
Asian / Pacific Islander	0
Non-Hispanic White	26
Native American / Alaskan Native	0
Hispanic	0
Other	0

**Age**
75 to 84	9
85 and over	3
Less than 65	46
65 to 74	49

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

The highest averages of the most common conditions of Medicare patients that Dr. Gretchen E. Farmer, MD treated were hypertension, high cholesterol, diabetes and ischemic heart disease.

Hypertension	54
High Cholesterol	43
Stroke	0
Ischemic Heart Disease	29
Depression	27
Chronic Kidney Disease	21
Asthma	4
Osteoporosis	7
Heart Failure	15
Chronic Obstructive Pulmonary Disease	15
Diabetes	28
Atrial Fibrillation	7
Dementia	3
Cancer	2

Education & Training

Dr. Gretchen E. Farmer, MD graduated from St. Louis University School of Medicine. She completed residency at SSM Saint Louis University Hospital-Internal Medicine/Pediatrics. She is certified by the Board Certification: Pediatrics and has a state license in Missouri.

Medical School: St. Louis University School of Medicine

Residency: SSM Saint Louis University Hospital-Internal Medicine/Pediatrics

Board Certification: Board Certification: Pediatrics

Licensed In: Missouri

Affiliations & Hospitals

Dr. Gretchen E. Farmer, MD is associated with these hospitals and organizations:

Mercy Health System

Mercy Hospital Washington

Mercy Clinic Primary Care - Union

MERCY CLINIC EAST COMMUNITIES

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. Gretchen E. Farmer, MD appears to accept the following insurance providers: WellCare Medicare Advantage, United Healthcare, Aetna, Humana, Cigna, Anthem BlueCross BlueShield, HealthLink, Health Net Federal Services, HFN, Inc., MultiPlan/PHCS, Home State Health, Medica, Healthy Blue (formerly Missouri Care), NHC Advantage, Live360 (Health Choices Network), Sterling Medicare, Essence, PPHP (Provider Partners Health Plan) and Ascension Smart Health.

Insurance Accepted by Provider includes:

According to our sources, Dr. Gretchen E. Farmer, MD accepts the following insurance providers:

WellCare Medicare Advantage

United Healthcare

Aetna

Humana

Cigna

Anthem BlueCross BlueShield

HealthLink

Health Net Federal Services

HFN, Inc.

MultiPlan/PHCS

Home State Health

Medica

Healthy Blue (formerly Missouri Care)

NHC Advantage

Live360 (Health Choices Network)

Sterling Medicare

Essence

PPHP (Provider Partners Health Plan)

Ascension Smart Health

Ratings & Reviews

Dr. Gretchen E. Farmer, MD has an exceptional overall rating with an average of 4.95 out of 5 stars based on 58 ratings. We collect ratings and reviews of Dr. Gretchen E. Farmer, MD from all over the web to help you find the right in Union, MO.

4.95

Overall Rating

(58 Ratings)

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General Payments

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

**Payments by Company**
Novo Nordisk Inc	$1,206 Victoza $221	Ozempic $194	Tresiba $190	RYBELSUS $169	Saxenda $124	Other $307
AbbVie Inc.	$829 UBRELVY $490	QULIPTA $221	VRAYLAR $117
AstraZeneca Pharmaceuticals LP	$803 FARXIGA $379	SYMBICORT $161	BYDUREON PEN $86	BREZTRI $58	DALIRESP $45	Other $73
Pfizer Inc.	$763 ELIQUIS $285	COLOGUARD $100	LYRICA $93	QUILLIVANT XR $89	COLOGUARD DNA CAPTURE REAGENTS $54	Other $143
Boehringer Ingelheim Pharmaceuticals, Inc.	$678 SPIRIVA RESPIMAT $233	JARDIANCE $102	TRADJENTA $66	STIOLTO RESPIMAT $46	Spiriva $43	Other $189
Other	$4,350 BREO $259	QELBREE $214	Vesicare $204	TOUJEO $148	JANUMET XR $147	Other $3,378

**Types of Payments**
Food and Beverage	$8,629

Biography

Dr. Gretchen Farmer is an Union, MO physician who specializes in general pediatrics. The average patient rating for Dr. Farmer is 5.0 stars (out of 5). She takes Anthem, Blue California, and HFN, in addition to other insurance carriers. Dr. Farmer attended medical school at St. Louis University School of Medicine. Dr. Farmer is professionally affiliated with Mercy Hospital Washington. According to Yext, she is not acceping new patients at this time.

Select Year:

Dr. Gretchen E. Farmer, MD

Office Locations

Noteworthy Medicare Patient Procedures Performed by Dr. Gretchen E. Farmer, MD in 2023

By Affordability:

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. Gretchen E. Farmer, MD in 2013

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

2014 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Gretchen E. Farmer, MD in 2014

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

2015 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Gretchen E. Farmer, MD in 2015

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

2016 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Gretchen E. Farmer, MD in 2016

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

2017 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Gretchen E. Farmer, MD in 2017

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

2018 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Gretchen E. Farmer, MD in 2018

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

2019 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Gretchen E. Farmer, MD in 2019

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

2020 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Gretchen E. Farmer, MD in 2020

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

2021 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Gretchen E. Farmer, MD in 2021

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

2022 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Gretchen E. Farmer, MD 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. Gretchen E. Farmer, MD From 2012 - 2022

Education & Training

Affiliations & Hospitals

Insurance Information

Ratings & Reviews

General Payments

Biography

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Other Providers in Union, MO