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Dr. Thayer Starr Phelan, MD

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Specializes in: Emergency Medicine

1600 W. Walnut Street
Jacksonville, IL 62650

(217) 788-3030

Dr. Thayer Starr Phelan, MD is an emergency medicine doctor in Jacksonville, IL specializing in emergency medicine. Dr. Thayer Starr Phelan, MD is affiliated with Memorial Health System.

Office Locations

1600 W. Walnut Street
Jacksonville, IL 62650

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Noteworthy Medicare Patient Procedures Performed by Dr. Thayer Starr Phelan, MD in 2023

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

Top 10%

By Affordability:

urinalysis

In 2023, Dr. Thayer Starr Phelan, MD had a list price for urinalysis that was lower than the list prices billed to Medicare by 90% of providers in related specialties within Illinois. 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 25%

By Affordability:

urine tests

In 2012, Dr. Thayer Starr Phelan, MD had a list price for urine tests that was lower than the list prices billed to Medicare by 75% of providers in related specialties within Illinois. 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. Thayer Starr Phelan, MD treated as an emergency medicine doctor in Jacksonville, IL during 2012 were emergency care, outpatient care, hospital care and nosebleed treatment.

Volume of procedures performed by Dr. Thayer Starr Phelan, MD for Medicare patients.

emergency care	984
hospital care	51
nosebleed treatment	16
outpatient care	51

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Thayer Starr Phelan, MD treated as an emergency medicine doctor in Jacksonville, IL during 2013 were emergency care, outpatient care and hospital care.

Volume of procedures performed by Dr. Thayer Starr Phelan, MD for Medicare patients.

emergency care	840
hospital care	34
outpatient care	34

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Thayer Starr Phelan, MD.

**Gender**
Male	318
Female	454

**Ethnicity**
Non-Hispanic White	674
Black	25
Hispanic	60
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	231
From 75 to 84	220
85 and over	140
Less than 65	181

Conditions of Medicare patients treated by Dr. Thayer Starr Phelan, MD in 2013

Hypertension	75
High Cholesterol	48
Stroke	9
Ischemic Heart Disease	40
Depression	38
Chronic Kidney Disease	38
Asthma	11
Osteoperosis	10
Atrial Fibrilation	17
Heart Failure	29
Chronic Obstructive Pulmonary Disease	34
Diabetes	34
Dementia	19
Cancer	12

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Thayer Starr Phelan, MD treated as an emergency medicine doctor in Jacksonville, IL during 2014 were emergency care.

Volume of procedures performed by Dr. Thayer Starr Phelan, MD for Medicare patients.

emergency care	258

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Thayer Starr Phelan, MD.

**Gender**
Male	107
Female	146

**Ethnicity**
Non-Hispanic White	198
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	54
From 75 to 84	56
85 and over	76
Less than 65	67

Conditions of Medicare patients treated by Dr. Thayer Starr Phelan, MD in 2014

Hypertension	75
High Cholesterol	58
Stroke	10
Ischemic Heart Disease	51
Depression	45
Chronic Kidney Disease	41
Asthma	14
Osteoperosis	9
Atrial Fibrilation	20
Heart Failure	42
Chronic Obstructive Pulmonary Disease	28
Diabetes	36
Dementia	24
Cancer	10

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Thayer Starr Phelan, MD treated as an emergency medicine doctor in Jacksonville, IL during 2015 were emergency care.

Volume of procedures performed by Dr. Thayer Starr Phelan, MD for Medicare patients.

emergency care	428

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Thayer Starr Phelan, MD.

**Gender**
Male	382
Female	498

**Ethnicity**
Non-Hispanic White	670
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	226
From 75 to 84	216
85 and over	222
Less than 65	216

Conditions of Medicare patients treated by Dr. Thayer Starr Phelan, MD in 2015

Hypertension	75
High Cholesterol	56
Stroke	10
Ischemic Heart Disease	46
Depression	43
Chronic Kidney Disease	42
Asthma	22
Osteoperosis	11
Atrial Fibrilation	17
Heart Failure	41
Chronic Obstructive Pulmonary Disease	26
Diabetes	40
Dementia	25
Cancer	10

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Thayer Starr Phelan, MD treated as an emergency medicine doctor in Jacksonville, IL during 2016 were emergency care.

Volume of procedures performed by Dr. Thayer Starr Phelan, MD for Medicare patients.

emergency care	228

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Thayer Starr Phelan, MD.

**Gender**
Male	100
Female	134

**Ethnicity**
Non-Hispanic White	177
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	63
From 75 to 84	59
85 and over	42
Less than 65	70

Conditions of Medicare patients treated by Dr. Thayer Starr Phelan, MD in 2016

Hypertension	74
High Cholesterol	48
Stroke	10
Ischemic Heart Disease	44
Depression	42
Chronic Kidney Disease	47
Asthma	30
Osteoperosis	10
Atrial Fibrilation	18
Heart Failure	38
Chronic Obstructive Pulmonary Disease	26
Diabetes	42
Dementia	19
Cancer	10

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Thayer Starr Phelan, MD treated as an emergency medicine doctor in Jacksonville, IL during 2017 were emergency care.

Volume of procedures performed by Dr. Thayer Starr Phelan, MD for Medicare patients.

emergency care	341

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Thayer Starr Phelan, MD.

**Gender**
Male	156
Female	184

**Ethnicity**
Non-Hispanic White	290
Black	0
Hispanic	38
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	98
From 75 to 84	96
85 and over	72
Less than 65	74

Conditions of Medicare patients treated by Dr. Thayer Starr Phelan, MD in 2017

Hypertension	72
High Cholesterol	41
Stroke	7
Ischemic Heart Disease	43
Depression	39
Chronic Kidney Disease	41
Asthma	11
Osteoperosis	9
Atrial Fibrilation	14
Heart Failure	30
Chronic Obstructive Pulmonary Disease	23
Diabetes	30
Dementia	20
Cancer	13

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Thayer Starr Phelan, MD treated as an emergency medicine doctor in Jacksonville, IL during 2018 were emergency care.

Volume of procedures performed by Dr. Thayer Starr Phelan, MD for Medicare patients.

emergency care	273

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Thayer Starr Phelan, MD.

**Gender**
Male	123
Female	163

**Ethnicity**
Non-Hispanic White	258
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	87
From 75 to 84	83
85 and over	73
Less than 65	43

Conditions of Medicare patients treated by Dr. Thayer Starr Phelan, MD in 2018

Hypertension	73
High Cholesterol	51
Stroke	11
Ischemic Heart Disease	41
Depression	36
Chronic Kidney Disease	38
Asthma	7
Osteoperosis	8
Atrial Fibrilation	15
Heart Failure	32
Chronic Obstructive Pulmonary Disease	23
Diabetes	26
Dementia	23
Cancer	10

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Thayer Starr Phelan, MD treated as an emergency medicine doctor in Jacksonville, IL during 2019 were emergency care.

Volume of procedures performed by Dr. Thayer Starr Phelan, MD for Medicare patients.

emergency care	282

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Thayer Starr Phelan, MD.

**Gender**
Male	130
Female	177

**Ethnicity**
Non-Hispanic White	280
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	108
From 75 to 84	79
85 and over	59
Less than 65	61

Conditions of Medicare patients treated by Dr. Thayer Starr Phelan, MD in 2019

Hypertension	65
High Cholesterol	52
Stroke	8
Ischemic Heart Disease	38
Depression	36
Chronic Kidney Disease	39
Asthma	11
Osteoperosis	6
Atrial Fibrilation	13
Heart Failure	29
Chronic Obstructive Pulmonary Disease	28
Diabetes	29
Dementia	17
Cancer	12

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Thayer Starr Phelan, MD treated as an emergency medicine doctor in Jacksonville, IL during 2020 were emergency care.

Volume of procedures performed by Dr. Thayer Starr Phelan, MD for Medicare patients.

emergency care	235

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Thayer Starr Phelan, MD.

**Gender**
Male	104
Female	148

**Ethnicity**
Non-Hispanic White	226
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	89
From 75 to 84	66
85 and over	48
Less than 65	49

Conditions of Medicare patients treated by Dr. Thayer Starr Phelan, MD in 2020

Hypertension	66
High Cholesterol	52
Stroke	6
Ischemic Heart Disease	37
Depression	36
Chronic Kidney Disease	51
Asthma	11
Osteoperosis	8
Atrial Fibrilation	15
Heart Failure	33
Chronic Obstructive Pulmonary Disease	21
Diabetes	33
Dementia	26
Cancer	12

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Thayer Starr Phelan, MD treated as an emergency medicine doctor in Jacksonville, IL during 2021 were emergency care.

Volume of procedures performed by Dr. Thayer Starr Phelan, MD for Medicare patients.

emergency care	290

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Thayer Starr Phelan, MD.

**Gender**
Male	126
Female	182

**Ethnicity**
Non-Hispanic White	286
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	103
From 75 to 84	90
85 and over	71
Less than 65	44

Conditions of Medicare patients treated by Dr. Thayer Starr Phelan, MD in 2021

Hypertension	69
High Cholesterol	56
Stroke	9
Ischemic Heart Disease	41
Depression	29
Chronic Kidney Disease	43
Asthma	11
Osteoperosis	8
Atrial Fibrilation	20
Heart Failure	29
Chronic Obstructive Pulmonary Disease	23
Diabetes	28
Dementia	25
Cancer	11

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Thayer Starr Phelan, MD treated as an emergency medicine doctor in Jacksonville, IL during 2022 were emergency care and lab tests.

Volume of procedures performed by Dr. Thayer Starr Phelan, MD for Medicare patients.

doctor visit	167
emergency care	95
lab tests	63

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Thayer Starr Phelan, MD.

**Gender**
Male	121
Female	167

**Ethnicity**
Non-Hispanic White	267
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	120
From 75 to 84	84
85 and over	59
Less than 65	25

Conditions of Medicare patients treated by Dr. Thayer Starr Phelan, MD in 2022

Hypertension	68
High Cholesterol	64
Stroke	7
Ischemic Heart Disease	27
Depression	26
Chronic Kidney Disease	23
Asthma	10
Osteoperosis	17
Atrial Fibrilation	22
Heart Failure	21
Chronic Obstructive Pulmonary Disease	23
Diabetes	24
Dementia	8
Cancer	17

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. Thayer Starr Phelan, MD for Medicare patients.

The highest averages for the top procedures that Dr. Thayer Starr Phelan, MD treated as an emergency medicine doctor in Jacksonville, IL were emergency care, lab tests, hospital care and outpatient care.

doctor visit	167
emergency care	386
hospital care	42
lab tests	63
nosebleed treatment	16
outpatient care	42

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. Thayer Starr Phelan, MD.

**Gender**
Male	151
Female	204

**Ethnicity**
Black / African American	2
Asian / Pacific Islander	0
Non-Hispanic White	302
Native American / Alaskan Native	0
Hispanic	8
Other	0

**Age**
75 to 84	95
85 and over	78
Less than 65	75
65 to 74	107

Average of Total of Conditions of Medicare patients treated by Dr. Thayer Starr Phelan, MD From 2012 - 2022

The highest averages of the most common conditions of Medicare patients that Dr. Thayer Starr Phelan, MD treated were hypertension, high cholesterol, ischemic heart disease and chronic kidney disease.

Hypertension	64
High Cholesterol	47
Stroke	7
Ischemic Heart Disease	37
Depression	33
Chronic Kidney Disease	36
Asthma	12
Osteoporosis	8
Heart Failure	29
Chronic Obstructive Pulmonary Disease	23
Diabetes	29
Atrial Fibrillation	15
Dementia	18
Cancer	10

Education & Training

She has a state license in Arizona.

Licensed In: Arizona

Affiliations & Hospitals

Dr. Thayer Starr Phelan, MD is associated with these hospitals and organizations:

Memorial Health System

Ratings & Reviews

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General Payments

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

**Payments by Company**
Actavis Pharma Inc	$19 TEFLARO $19

**Types of Payments**
Food and Beverage	$19

Biography

Dr. Thayer Phelan's specialty is emergency medicine. Her areas of expertise include the following: urgent care and emergency care. She is professionally affiliated with Memorial Health System.

Select Year:

Dr. Thayer Starr Phelan, MD

Office Locations

Noteworthy Medicare Patient Procedures Performed by Dr. Thayer Starr Phelan, MD in 2023

By Affordability:

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. Thayer Starr Phelan, MD in 2013

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

2014 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Thayer Starr Phelan, MD in 2014

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

2015 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Thayer Starr Phelan, MD in 2015

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

2016 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Thayer Starr Phelan, MD in 2016

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

2017 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Thayer Starr Phelan, MD in 2017

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

2018 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Thayer Starr Phelan, MD in 2018

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

2019 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Thayer Starr Phelan, MD in 2019

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

2020 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Thayer Starr Phelan, MD in 2020

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

2021 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Thayer Starr Phelan, MD in 2021

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

2022 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Thayer Starr Phelan, 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. Thayer Starr Phelan, MD From 2012 - 2022

Education & Training

Affiliations & Hospitals

Ratings & Reviews

General Payments

Biography

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