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Dr. John R. Barker, MD

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Specializes in: Spine Surgery and Orthopedics/Orthopedic Surgery

University of Oklahoma College of Medicine

Professional interests include: thoracic spine surgery, spinal cord tumor, minimally invasive spine surgery

10103 Ridgegate Parkway
Lone Tree, CO 80124

(303) 225-8120

Dr. John R. Barker, MD is a spine surgeon in Lone Tree, CO specializing in spine surgery and orthopedics/orthopedic surgery. He graduated from University of Oklahoma College of Medicine. Dr. John R. Barker, MD is affiliated with HealthOne and HCA HealthONE Sky Ridge.

Office Locations

10103 Ridgegate Parkway
Lone Tree, CO 80124

(303) 225-8120

(303) 225-8130

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1411 South Potomac Street Suite 250
Aurora, CO 80012

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In The News (see more mentions in the news)

“The Louisville transplant team, on the other hand, led by Dr. John Barker, argued that caution was a form of dawdling.”—"A Stranger in the Mirror: Should Doctors Transplant Faces? (Published 2004)", New York Times, October 2004

“"As for surgical technique, a face transplant could have been done 10 years ago," said Dr. John Barker, director of research for the surgeons' group.”—"The face as frontier", Los Angeles Times, February 2004

“"The human face is you," says Dr. John Barker.”—"'Facing' the future of transplants", NBC News, January 2004

Noteworthy Medicare Patient Procedures Performed by Dr. John R. Barker, MD in 2023

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

Top 25%

By Volume:

spinal procedures

spine X-ray

In 2012, Dr. John R. Barker, MD performed more spinal procedures, and spine X-ray 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. John R. Barker, MD treated as a spine surgeon in Lone Tree, CO during 2012 were spinal procedures, X-rays, nerve procedures and decompression surgery.

Volume of procedures performed by Dr. John R. Barker, MD for Medicare patients.

arthrodesis (bone fusion surgery)	18
decompression surgery	22
doctor visit	362
nerve procedures	22
spinal procedures	312
X-rays	253

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. John R. Barker, MD treated as a spine surgeon in Lone Tree, CO during 2013 were spinal procedures, X-rays, nerve procedures and decompression surgery.

Volume of procedures performed by Dr. John R. Barker, MD for Medicare patients.

arthrodesis (bone fusion surgery)	35
decompression surgery	36
doctor visit	354
neck surgery	12
nerve procedures	36
spinal procedures	241
X-rays	166

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. John R. Barker, MD.

**Gender**
Male	87
Female	125

**Ethnicity**
Non-Hispanic White	189
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	87
From 75 to 84	48
85 and over	20
Less than 65	57

Conditions of Medicare patients treated by Dr. John R. Barker, MD in 2013

Hypertension	62
High Cholesterol	47
Stroke	0
Ischemic Heart Disease	26
Depression	29
Chronic Kidney Disease	18
Asthma	10
Osteoperosis	9
Atrial Fibrilation	8
Heart Failure	10
Chronic Obstructive Pulmonary Disease	12
Diabetes	21
Dementia	6
Cancer	8

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. John R. Barker, MD treated as a spine surgeon in Lone Tree, CO during 2014 were spinal procedures, X-rays, aspiration and bone marrow tests.

Volume of procedures performed by Dr. John R. Barker, MD for Medicare patients.

arthrodesis (bone fusion surgery)	25
aspiration	26
bone marrow tests	26
decompression surgery	23
doctor visit	338
implant removal	12
nerve procedures	23
spinal procedures	256
X-rays	168

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. John R. Barker, MD.

**Gender**
Male	76
Female	142

**Ethnicity**
Non-Hispanic White	185
Black	13
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	102
From 75 to 84	40
85 and over	20
Less than 65	56

Conditions of Medicare patients treated by Dr. John R. Barker, MD in 2014

Hypertension	65
High Cholesterol	46
Stroke	0
Ischemic Heart Disease	31
Depression	32
Chronic Kidney Disease	17
Asthma	9
Osteoperosis	13
Atrial Fibrilation	9
Heart Failure	11
Chronic Obstructive Pulmonary Disease	17
Diabetes	24
Dementia	7
Cancer	6

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. John R. Barker, MD treated as a spine surgeon in Lone Tree, CO during 2015 were spinal procedures, X-rays, nerve procedures and decompression surgery.

Volume of procedures performed by Dr. John R. Barker, MD for Medicare patients.

arthrodesis (bone fusion surgery)	22
aspiration	25
bone marrow tests	25
decompression surgery	33
doctor visit	405
nerve procedures	33
spinal procedures	264
X-rays	174

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. John R. Barker, MD.

**Gender**
Male	166
Female	292

**Ethnicity**
Non-Hispanic White	396
Black	0
Hispanic	28
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	208
From 75 to 84	112
85 and over	44
Less than 65	94

Conditions of Medicare patients treated by Dr. John R. Barker, MD in 2015

Hypertension	62
High Cholesterol	48
Stroke	6
Ischemic Heart Disease	25
Depression	28
Chronic Kidney Disease	19
Asthma	11
Osteoperosis	9
Atrial Fibrilation	11
Heart Failure	14
Chronic Obstructive Pulmonary Disease	14
Diabetes	28
Dementia	0
Cancer	7

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. John R. Barker, MD treated as a spine surgeon in Lone Tree, CO during 2016 were spinal procedures, X-rays, aspiration and bone marrow tests.

Volume of procedures performed by Dr. John R. Barker, MD for Medicare patients.

arthrodesis (bone fusion surgery)	25
aspiration	39
bone marrow tests	39
decompression surgery	24
doctor visit	480
nerve procedures	24
spinal procedures	227
X-rays	149

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. John R. Barker, MD.

**Gender**
Male	108
Female	166

**Ethnicity**
Non-Hispanic White	228
Black	0
Hispanic	21
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	138
From 75 to 84	60
85 and over	18
Less than 65	58

Conditions of Medicare patients treated by Dr. John R. Barker, MD in 2016

Hypertension	62
High Cholesterol	51
Stroke	0
Ischemic Heart Disease	26
Depression	26
Chronic Kidney Disease	26
Asthma	19
Osteoperosis	6
Atrial Fibrilation	6
Heart Failure	13
Chronic Obstructive Pulmonary Disease	17
Diabetes	23
Dementia	7
Cancer	9

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. John R. Barker, MD treated as a spine surgeon in Lone Tree, CO during 2017 were spinal procedures, X-rays, arthrodesis (bone fusion surgery) and nerve procedures.

Volume of procedures performed by Dr. John R. Barker, MD for Medicare patients.

arthrodesis (bone fusion surgery)	43
aspiration	37
bone marrow tests	37
decompression surgery	40
doctor visit	468
neck surgery	11
nerve procedures	40
spinal procedures	218
X-rays	120

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. John R. Barker, MD.

**Gender**
Male	103
Female	155

**Ethnicity**
Non-Hispanic White	214
Black	0
Hispanic	20
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	126
From 75 to 84	64
85 and over	22
Less than 65	46

Conditions of Medicare patients treated by Dr. John R. Barker, MD in 2017

Hypertension	62
High Cholesterol	47
Stroke	0
Ischemic Heart Disease	33
Depression	31
Chronic Kidney Disease	27
Asthma	10
Osteoperosis	9
Atrial Fibrilation	9
Heart Failure	15
Chronic Obstructive Pulmonary Disease	17
Diabetes	24
Dementia	9
Cancer	7

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. John R. Barker, MD treated as a spine surgeon in Lone Tree, CO during 2018 were spinal procedures, X-rays, nerve procedures and decompression surgery.

Volume of procedures performed by Dr. John R. Barker, MD for Medicare patients.

arthrodesis (bone fusion surgery)	34
decompression surgery	38
doctor visit	522
nerve procedures	38
spinal procedures	225
X-rays	130

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. John R. Barker, MD.

**Gender**
Male	125
Female	150

**Ethnicity**
Non-Hispanic White	234
Black	12
Hispanic	15
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	143
From 75 to 84	72
85 and over	16
Less than 65	44

Conditions of Medicare patients treated by Dr. John R. Barker, MD in 2018

Hypertension	65
High Cholesterol	48
Stroke	0
Ischemic Heart Disease	30
Depression	27
Chronic Kidney Disease	24
Asthma	9
Osteoperosis	8
Atrial Fibrilation	8
Heart Failure	14
Chronic Obstructive Pulmonary Disease	18
Diabetes	21
Dementia	8
Cancer	11

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. John R. Barker, MD treated as a spine surgeon in Lone Tree, CO during 2019 were spinal procedures, X-rays, arthrodesis (bone fusion surgery) and nerve procedures.

Volume of procedures performed by Dr. John R. Barker, MD for Medicare patients.

arthrodesis (bone fusion surgery)	40
decompression surgery	33
doctor visit	459
neck surgery	22
nerve procedures	33
spinal procedures	180
X-rays	103

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. John R. Barker, MD.

**Gender**
Male	107
Female	151

**Ethnicity**
Non-Hispanic White	225
Black	0
Hispanic	16
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	125
From 75 to 84	65
85 and over	21
Less than 65	47

Conditions of Medicare patients treated by Dr. John R. Barker, MD in 2019

Hypertension	64
High Cholesterol	53
Stroke	0
Ischemic Heart Disease	29
Depression	33
Chronic Kidney Disease	30
Asthma	7
Osteoperosis	9
Atrial Fibrilation	8
Heart Failure	16
Chronic Obstructive Pulmonary Disease	21
Diabetes	23
Dementia	7
Cancer	7

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. John R. Barker, MD treated as a spine surgeon in Lone Tree, CO during 2020 were spinal procedures, X-rays, arthrodesis (bone fusion surgery) and nerve procedures.

Volume of procedures performed by Dr. John R. Barker, MD for Medicare patients.

arthrodesis (bone fusion surgery)	43
decompression surgery	31
doctor visit	396
joint surgery	15
minimally invasive procedures	15
nerve procedures	31
pelvic surgery	15
spinal procedures	166
X-rays	63

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. John R. Barker, MD.

**Gender**
Male	95
Female	142

**Ethnicity**
Non-Hispanic White	212
Black	11
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	113
From 75 to 84	78
85 and over	15
Less than 65	31

Conditions of Medicare patients treated by Dr. John R. Barker, MD in 2020

Hypertension	59
High Cholesterol	51
Stroke	5
Ischemic Heart Disease	31
Depression	29
Chronic Kidney Disease	32
Asthma	6
Osteoperosis	11
Atrial Fibrilation	9
Heart Failure	17
Chronic Obstructive Pulmonary Disease	14
Diabetes	27
Dementia	8
Cancer	10

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. John R. Barker, MD treated as a spine surgeon in Lone Tree, CO during 2021 were spinal procedures, X-rays, nerve procedures and decompression surgery.

Volume of procedures performed by Dr. John R. Barker, MD for Medicare patients.

arthrodesis (bone fusion surgery)	22
decompression surgery	31
doctor visit	416
nerve procedures	31
spinal procedures	191
X-rays	124

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. John R. Barker, MD.

**Gender**
Male	88
Female	138

**Ethnicity**
Non-Hispanic White	195
Black	0
Hispanic	13
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	109
From 75 to 84	71
85 and over	18
Less than 65	28

Conditions of Medicare patients treated by Dr. John R. Barker, MD in 2021

Hypertension	64
High Cholesterol	60
Stroke	5
Ischemic Heart Disease	30
Depression	29
Chronic Kidney Disease	33
Asthma	10
Osteoperosis	13
Atrial Fibrilation	7
Heart Failure	17
Chronic Obstructive Pulmonary Disease	15
Diabetes	27
Dementia	12
Cancer	10

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. John R. Barker, MD treated as a spine surgeon in Lone Tree, CO during 2022 were spinal procedures, X-rays and arthrodesis (bone fusion surgery).

Volume of procedures performed by Dr. John R. Barker, MD for Medicare patients.

arthrodesis (bone fusion surgery)	22
doctor visit	424
spinal procedures	146
X-rays	124

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. John R. Barker, MD.

**Gender**
Male	100
Female	119

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

**Age**
From 65 to 74	108
From 75 to 84	76
85 and over	14
Less than 65	21

Conditions of Medicare patients treated by Dr. John R. Barker, MD in 2022

Hypertension	69
High Cholesterol	74
Stroke	8
Ischemic Heart Disease	22
Depression	26
Chronic Kidney Disease	19
Asthma	12
Osteoperosis	12
Atrial Fibrilation	17
Heart Failure	15
Chronic Obstructive Pulmonary Disease	19
Diabetes	27
Dementia	0
Cancer	14

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. John R. Barker, MD for Medicare patients.

The highest averages for the top procedures that Dr. John R. Barker, MD treated as a spine surgeon in Lone Tree, CO were spinal procedures, X-rays, nerve procedures and aspiration.

arthrodesis (bone fusion surgery)	29
aspiration	31
bone marrow tests	31
decompression surgery	31
doctor visit	420
implant removal	12
joint surgery	15
minimally invasive procedures	15
neck surgery	15
nerve procedures	31
pelvic surgery	15
spinal procedures	220
X-rays	143

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. John R. Barker, MD.

**Gender**
Female	143
Male	95

**Ethnicity**
Black / African American	3
Asian / Pacific Islander	0
Non-Hispanic White	206
Native American / Alaskan Native	0
Hispanic	10
Other	0

**Age**
85 and over	18
75 to 84	62
Less than 65	43
65 to 74	114

Average of Total of Conditions of Medicare patients treated by Dr. John R. Barker, MD From 2012 - 2022

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

Hypertension	57
High Cholesterol	47
Stroke	2
Ischemic Heart Disease	25
Depression	26
Chronic Kidney Disease	22
Asthma	9
Osteoporosis	9
Heart Failure	12
Chronic Obstructive Pulmonary Disease	14
Diabetes	22
Atrial Fibrillation	8
Dementia	5
Cancer	8

Education & Training

Dr. John R. Barker, MD graduated from University of Oklahoma College of Medicine. He completed residency at Southern Illinois University Affiliated Hospitals. He has a state license in Colorado.

Medical School: University of Oklahoma College of Medicine

Residency: Southern Illinois University Affiliated Hospitals

Licensed In: Colorado

Affiliations & Hospitals

Dr. John R. Barker, MD is associated with these hospitals and organizations:

HealthOne

HCA HealthONE Sky Ridge

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General Payments

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

**Payments by Company**
Medacta USA, Inc.	$22,414 MySpine $21,389	MUST $766	MectaLif $259
Surgalign Spine Technologies, Inc.	$11,753 Simmetry $11,000	SlMMETRY $559	SIMMETRY IMPLANT, 12.5MM X 50MM $194
BIOVENTUS LLC	$9,893 OsteoAMP $7,776	BoneScalpel $107	NeXus $42	$1,967
SI-Bone, Inc.	$9,351 iFuse Implant $8,262	IFUSE IMPLANT SYSTEM $500	$590
RTI Surgical, Inc.	$8,391 SlMMETRY $7,400	Allograft $976	Allograft * $15
Other	$13,106 Spine $3,142	BSBHT - SPINE $1,800	Silhouette Mineralized Collagen Strip $1,145	Biologics Therapies $977	Product Portfolio $310	Other $5,732

**Types of Payments**
Consulting Fee	$42,519
Travel and Lodging	$18,769
Food and Beverage	$9,607
Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program	$3,906
Education	$57
Other	$50

Research Payments

Dr. John R. Barker, MD has received 11 research payments totaling $19,528.

Biography

Dr. John Barker's areas of specialization are spine surgery and orthopedics/orthopedic surgery. Dr. Barker has a special interest in spinal cord tumor, minimally invasive spine surgery, and thoracic spine surgery. He is professionally affiliated with HealthOne. Before completing his residency at a hospital affiliated with Southern Illinois University, Dr. Barker attended medical school at Southern Illinois University School of Medicine and the University of Oklahoma College of Medicine.