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Home > CA Providers > Diagnostic Radiologists

Dr. John C. Loh, MD

(No ratings)

Specializes in: Diagnostic Radiology

Washington University in St. Louis School of Medicine

2020 Court Street
Redding, CA 96001

(530) 243-1249

Dr. John C. Loh, MD is a diagnostic radiologist in Redding, CA specializing in diagnostic radiology. He graduated from Washington University in St. Louis School of Medicine. Dr. John C. Loh, MD is affiliated with Mercy Medical Center Redding, Dignity Health, SINGLETON ASSOCIATES PA and SONORAN RADIOLOGY LTD.

Office Locations

Dignity Health

2020 Court Street
Redding, CA 96001

(530) 243-1249

(530) 243-3544

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Noteworthy Medicare Patient Procedures Performed by Dr. John C. Loh, MD in 2023

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

Top 5%

By Volume:

lower extremity venous duplex

musculoskeletal imaging

In 2023, Dr. John C. Loh, MD performed more ankle MRI, hip MRI, knee MRI, knee X-ray, lower extremity venous duplex, and musculoskeletal imaging procedures for Medicare patients than 95% of providers in related specialties within California.

Top 10%

By Volume:

limited abdominal ultrasound

vascular ultrasound

In 2023, Dr. John C. Loh, MD performed more limited abdominal ultrasound, and vascular ultrasound procedures for Medicare patients than 90% of providers in related specialties within California.

Top 25%

By Volume:

MRI

tibia and fibula X-ray

By Affordability:

spine imaging

In 2012, among providers in related specialties within California, Dr. John C. Loh, MD performed more MRI (magnetic resonance imaging), tibia and fibula (lower leg) X-ray, ultrasound (sonogram), vascular procedures, wrist MRI, and X-rays procedures for Medicare patients than 75% of them and he also had a list price for spine imaging that was lower than the list prices billed to Medicare by 75% 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.

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. John C. Loh, MD treated as a diagnostic radiologist in Redding, CA during 2012 were X-rays, thoracic (chest) imaging, CT scan and ultrasound (sonogram).

Volume of procedures performed by Dr. John C. Loh, MD for Medicare patients.

abdominal imaging	614
brain imaging (neuroimaging)	432
CT scan	922
gastrointestinal procedures	38
hip imaging	170
MRI (magnetic resonance imaging)	249
musculoskeletal imaging	499
neck imaging	15
nuclear scan	16
pelvic imaging	400
spinal procedures	382
thoracic (chest) imaging	1725
ultrasound (sonogram)	694
vascular procedures	362
women's imaging	28
X-rays	2405

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. John C. Loh, MD treated as a diagnostic radiologist in Redding, CA during 2013 were X-rays, thoracic (chest) imaging, ultrasound (sonogram) and CT scan.

Volume of procedures performed by Dr. John C. Loh, MD for Medicare patients.

abdominal imaging	762
brain imaging (neuroimaging)	552
breast procedures	13
CT scan	952
gastrointestinal procedures	12
hip imaging	192
MRI (magnetic resonance imaging)	308
musculoskeletal imaging	472
neck imaging	53
nuclear scan	30
pelvic imaging	359
preventive care	13
spinal procedures	423
thoracic (chest) imaging	1573
ultrasound (sonogram)	971
vascular procedures	558
women's imaging	36
X-rays	2238

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. John C. Loh, MD.

**Gender**
Male	1629
Female	2346

**Ethnicity**
Non-Hispanic White	3779
Black	44
Hispanic	84
Asian	0
Other	38
Native American	0

**Age**
From 65 to 74	1283
From 75 to 84	1161
85 and over	651
Less than 65	880

Conditions of Medicare patients treated by Dr. John C. Loh, MD in 2013

Hypertension	72
High Cholesterol	63
Stroke	10
Ischemic Heart Disease	39
Depression	37
Chronic Kidney Disease	32
Asthma	14
Osteoperosis	12
Atrial Fibrilation	18
Heart Failure	26
Chronic Obstructive Pulmonary Disease	28
Diabetes	33
Dementia	17
Cancer	12

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. John C. Loh, MD treated as a diagnostic radiologist in Redding, CA during 2014 were X-rays, thoracic (chest) imaging, ultrasound (sonogram) and CT scan.

Volume of procedures performed by Dr. John C. Loh, MD for Medicare patients.

abdominal imaging	731
brain imaging (neuroimaging)	417
CT scan	738
dialysis access procedures	11
gastrointestinal procedures	20
hip imaging	145
MRI (magnetic resonance imaging)	322
musculoskeletal imaging	408
neck imaging	62
nuclear scan	42
pelvic imaging	288
spinal procedures	379
thoracic (chest) imaging	1456
ultrasound (sonogram)	1110
vascular procedures	557
women's imaging	25
X-rays	1996

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. John C. Loh, MD.

**Gender**
Male	1499
Female	2119

**Ethnicity**
Non-Hispanic White	3417
Black	41
Hispanic	81
Asian	0
Other	60
Native American	0

**Age**
From 65 to 74	1243
From 75 to 84	993
85 and over	586
Less than 65	796

Conditions of Medicare patients treated by Dr. John C. Loh, MD in 2014

Hypertension	74
High Cholesterol	64
Stroke	9
Ischemic Heart Disease	40
Depression	40
Chronic Kidney Disease	34
Asthma	17
Osteoperosis	12
Atrial Fibrilation	17
Heart Failure	27
Chronic Obstructive Pulmonary Disease	28
Diabetes	34
Dementia	16
Cancer	14

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. John C. Loh, MD treated as a diagnostic radiologist in Redding, CA during 2015 were X-rays, thoracic (chest) imaging, CT scan and ultrasound (sonogram).

Volume of procedures performed by Dr. John C. Loh, MD for Medicare patients.

abdominal imaging	820
brain imaging (neuroimaging)	600
CT scan	1126
gastrointestinal procedures	27
hip imaging	240
MRI (magnetic resonance imaging)	382
musculoskeletal imaging	661
neck imaging	87
nuclear scan	24
pelvic imaging	511
spinal procedures	432
thoracic (chest) imaging	1980
ultrasound (sonogram)	1092
vascular procedures	593
women's imaging	29
X-rays	2770

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. John C. Loh, MD.

**Gender**
Male	3618
Female	4960

**Ethnicity**
Non-Hispanic White	8178
Black	70
Hispanic	168
Asian	0
Other	112
Native American	0

**Age**
From 65 to 74	3038
From 75 to 84	2332
85 and over	1448
Less than 65	1760

Conditions of Medicare patients treated by Dr. John C. Loh, MD in 2015

Hypertension	73
High Cholesterol	65
Stroke	10
Ischemic Heart Disease	41
Depression	38
Chronic Kidney Disease	36
Asthma	23
Osteoperosis	11
Atrial Fibrilation	19
Heart Failure	29
Chronic Obstructive Pulmonary Disease	28
Diabetes	33
Dementia	16
Cancer	13

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. John C. Loh, MD treated as a diagnostic radiologist in Redding, CA during 2016 were X-rays, thoracic (chest) imaging, CT scan and ultrasound (sonogram).

Volume of procedures performed by Dr. John C. Loh, MD for Medicare patients.

abdominal imaging	799
brain imaging (neuroimaging)	626
CT scan	1283
gastrointestinal procedures	20
hip imaging	96
MRI (magnetic resonance imaging)	483
musculoskeletal imaging	509
neck imaging	58
nuclear scan	18
pelvic imaging	452
spinal procedures	445
thoracic (chest) imaging	1813
ultrasound (sonogram)	960
vascular procedures	555
women's imaging	16
X-rays	2161

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. John C. Loh, MD.

**Gender**
Male	1790
Female	2425

**Ethnicity**
Non-Hispanic White	3992
Black	37
Hispanic	95
Asian	0
Other	65
Native American	0

**Age**
From 65 to 74	1430
From 75 to 84	1160
85 and over	711
Less than 65	914

Conditions of Medicare patients treated by Dr. John C. Loh, MD in 2016

Hypertension	73
High Cholesterol	64
Stroke	9
Ischemic Heart Disease	43
Depression	36
Chronic Kidney Disease	39
Asthma	33
Osteoperosis	11
Atrial Fibrilation	19
Heart Failure	29
Chronic Obstructive Pulmonary Disease	27
Diabetes	35
Dementia	18
Cancer	13

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. John C. Loh, MD treated as a diagnostic radiologist in Redding, CA during 2017 were X-rays, thoracic (chest) imaging, CT scan and MRI (magnetic resonance imaging).

Volume of procedures performed by Dr. John C. Loh, MD for Medicare patients.

abdominal imaging	520
brain imaging (neuroimaging)	397
CT scan	870
gastrointestinal procedures	16
hip imaging	119
MRI (magnetic resonance imaging)	531
musculoskeletal imaging	433
neck imaging	25
pelvic imaging	311
spinal procedures	390
thoracic (chest) imaging	1372
ultrasound (sonogram)	415
vascular procedures	266
X-rays	1637

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. John C. Loh, MD.

**Gender**
Male	1375
Female	1937

**Ethnicity**
Non-Hispanic White	3139
Black	28
Hispanic	61
Asian	0
Other	61
Native American	0

**Age**
From 65 to 74	1121
From 75 to 84	928
85 and over	561
Less than 65	702

Conditions of Medicare patients treated by Dr. John C. Loh, MD in 2017

Hypertension	74
High Cholesterol	57
Stroke	9
Ischemic Heart Disease	43
Depression	37
Chronic Kidney Disease	43
Asthma	15
Osteoperosis	12
Atrial Fibrilation	21
Heart Failure	31
Chronic Obstructive Pulmonary Disease	29
Diabetes	33
Dementia	20
Cancer	13

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. John C. Loh, MD treated as a diagnostic radiologist in Redding, CA during 2018 were CT scan, musculoskeletal imaging, MRI (magnetic resonance imaging) and X-rays.

Volume of procedures performed by Dr. John C. Loh, MD for Medicare patients.

abdominal imaging	515
brain imaging (neuroimaging)	354
cardiac procedures	46
CT scan	1010
gastrointestinal procedures	22
hip imaging	195
MRI (magnetic resonance imaging)	675
musculoskeletal imaging	834
neck imaging	17
nuclear scan	46
pelvic imaging	348
spinal procedures	478
stress testing	46
thoracic (chest) imaging	233
ultrasound (sonogram)	326
urologic procedures	22
vascular procedures	81
X-rays	571

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. John C. Loh, MD.

**Gender**
Male	1849
Female	2572

**Ethnicity**
Non-Hispanic White	4016
Black	44
Hispanic	165
Asian	56
Other	60
Native American	80

**Age**
From 65 to 74	1766
From 75 to 84	1227
85 and over	593
Less than 65	835

Conditions of Medicare patients treated by Dr. John C. Loh, MD in 2018

Hypertension	71
High Cholesterol	58
Stroke	8
Ischemic Heart Disease	40
Depression	32
Chronic Kidney Disease	42
Asthma	10
Osteoperosis	8
Atrial Fibrilation	18
Heart Failure	30
Chronic Obstructive Pulmonary Disease	29
Diabetes	35
Dementia	16
Cancer	12

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. John C. Loh, MD treated as a diagnostic radiologist in Redding, CA during 2019 were CT scan, musculoskeletal imaging, X-rays and abdominal imaging.

Volume of procedures performed by Dr. John C. Loh, MD for Medicare patients.

abdominal imaging	619
brain imaging (neuroimaging)	324
cardiac procedures	100
CT scan	1008
gastrointestinal procedures	33
hip imaging	196
MRI (magnetic resonance imaging)	609
musculoskeletal imaging	997
neck imaging	24
nuclear scan	100
pelvic imaging	442
spinal procedures	567
stress testing	100
thoracic (chest) imaging	253
ultrasound (sonogram)	365
urologic procedures	19
vascular procedures	79
X-rays	927

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. John C. Loh, MD.

**Gender**
Male	2322
Female	3002

**Ethnicity**
Non-Hispanic White	4774
Black	49
Hispanic	249
Asian	59
Other	55
Native American	138

**Age**
From 65 to 74	2144
From 75 to 84	1587
85 and over	618
Less than 65	975

Conditions of Medicare patients treated by Dr. John C. Loh, MD in 2019

Hypertension	69
High Cholesterol	55
Stroke	8
Ischemic Heart Disease	39
Depression	30
Chronic Kidney Disease	38
Asthma	7
Osteoperosis	7
Atrial Fibrilation	15
Heart Failure	28
Chronic Obstructive Pulmonary Disease	27
Diabetes	34
Dementia	13
Cancer	12

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. John C. Loh, MD treated as a diagnostic radiologist in Redding, CA during 2020 were CT scan, musculoskeletal imaging, MRI (magnetic resonance imaging) and spinal procedures.

Volume of procedures performed by Dr. John C. Loh, MD for Medicare patients.

abdominal imaging	593
brain imaging (neuroimaging)	433
cardiac procedures	106
CT scan	1402
hip imaging	218
MRI (magnetic resonance imaging)	736
musculoskeletal imaging	821
neck imaging	18
nuclear scan	106
pelvic imaging	472
spinal procedures	706
stress testing	106
thoracic (chest) imaging	277
ultrasound (sonogram)	227
urologic procedures	15
vascular procedures	40
X-rays	579

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. John C. Loh, MD.

**Gender**
Male	2056
Female	2530

**Ethnicity**
Non-Hispanic White	4118
Black	50
Hispanic	216
Asian	55
Other	55
Native American	92

**Age**
From 65 to 74	1873
From 75 to 84	1370
85 and over	557
Less than 65	786

Conditions of Medicare patients treated by Dr. John C. Loh, MD in 2020

Hypertension	70
High Cholesterol	57
Stroke	8
Ischemic Heart Disease	41
Depression	30
Chronic Kidney Disease	43
Asthma	7
Osteoperosis	8
Atrial Fibrilation	16
Heart Failure	30
Chronic Obstructive Pulmonary Disease	28
Diabetes	35
Dementia	15
Cancer	13

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. John C. Loh, MD treated as a diagnostic radiologist in Redding, CA during 2021 were musculoskeletal imaging, MRI (magnetic resonance imaging), ultrasound (sonogram) and hip imaging.

Volume of procedures performed by Dr. John C. Loh, MD for Medicare patients.

abdominal imaging	183
brain imaging (neuroimaging)	43
cardiac procedures	12
CT scan	129
hip imaging	338
MRI (magnetic resonance imaging)	553
musculoskeletal imaging	624
nuclear scan	12
pelvic imaging	39
spinal procedures	87
stress testing	12
thoracic (chest) imaging	12
ultrasound (sonogram)	426
vascular procedures	282
X-rays	123

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. John C. Loh, MD.

**Gender**
Male	752
Female	1104

**Ethnicity**
Non-Hispanic White	1365
Black	202
Hispanic	190
Asian	50
Other	0
Native American	0

**Age**
From 65 to 74	911
From 75 to 84	548
85 and over	177
Less than 65	220

Conditions of Medicare patients treated by Dr. John C. Loh, MD in 2021

Hypertension	75
High Cholesterol	68
Stroke	8
Ischemic Heart Disease	44
Depression	29
Chronic Kidney Disease	45
Asthma	10
Osteoperosis	13
Atrial Fibrilation	15
Heart Failure	28
Chronic Obstructive Pulmonary Disease	19
Diabetes	38
Dementia	17
Cancer	12

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. John C. Loh, MD treated as a diagnostic radiologist in Redding, CA during 2022 were ultrasound (sonogram), musculoskeletal imaging, vascular procedures and MRI (magnetic resonance imaging).

Volume of procedures performed by Dr. John C. Loh, MD for Medicare patients.

abdominal imaging	192
CT scan	82
hip imaging	259
MRI (magnetic resonance imaging)	389
musculoskeletal imaging	609
pelvic imaging	25
spinal procedures	13
ultrasound (sonogram)	739
vascular procedures	509
women's imaging	12
X-rays	151

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. John C. Loh, MD.

**Gender**
Male	714
Female	1085

**Ethnicity**
Non-Hispanic White	1247
Black	251
Hispanic	185
Asian	61
Other	0
Native American	0

**Age**
From 65 to 74	832
From 75 to 84	555
85 and over	219
Less than 65	193

Conditions of Medicare patients treated by Dr. John C. Loh, MD in 2022

Hypertension	75
High Cholesterol	75
Stroke	16
Ischemic Heart Disease	36
Depression	29
Chronic Kidney Disease	35
Asthma	13
Osteoperosis	18
Atrial Fibrilation	25
Heart Failure	28
Chronic Obstructive Pulmonary Disease	21
Diabetes	41
Dementia	14
Cancer	15

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. John C. Loh, MD for Medicare patients.

The highest averages for the top procedures that Dr. John C. Loh, MD treated as a diagnostic radiologist in Redding, CA were X-rays, thoracic (chest) imaging, CT scan and ultrasound (sonogram).

abdominal imaging	577
brain imaging (neuroimaging)	417
breast procedures	13
cardiac procedures	66
CT scan	865
dialysis access procedures	11
gastrointestinal procedures	23
hip imaging	197
MRI (magnetic resonance imaging)	476
musculoskeletal imaging	624
neck imaging	39
nuclear scan	43
pelvic imaging	331
preventive care	13
spinal procedures	391
stress testing	66
thoracic (chest) imaging	1069
ultrasound (sonogram)	665
urologic procedures	18
vascular procedures	352
women's imaging	24
X-rays	1414

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. John C. Loh, MD.

**Gender**
Male	1600
Female	2189

**Ethnicity**
Black / African American	74
Asian / Pacific Islander	25
Non-Hispanic White	3456
Hispanic	135
Native American / Alaskan Native	28
Other	46

**Age**
75 to 84	1078
85 and over	556
Less than 65	732
65 to 74	1421

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

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

Hypertension	66
High Cholesterol	56
Stroke	8
Ischemic Heart Disease	36
Depression	30
Chronic Kidney Disease	35
Asthma	13
Osteoporosis	10
Heart Failure	26
Chronic Obstructive Pulmonary Disease	24
Diabetes	31
Atrial Fibrillation	16
Cancer	11
Dementia	14

Education & Training

Dr. John C. Loh, MD graduated from Washington University in St. Louis School of Medicine. He completed residency at Mallinckrodt Institute of Radiology. He is certified by the Radiology Diagnostic Radiology and has a state license in Missouri.

Medical School: Washington University in St. Louis School of Medicine

Residency: Mallinckrodt Institute of Radiology

Board Certification: Radiology Diagnostic Radiology

Licensed In: Missouri

Affiliations & Hospitals

Dr. John C. Loh, MD is associated with these hospitals and organizations:

Mercy Medical Center Redding

Dignity Health

SINGLETON ASSOCIATES PA

SONORAN RADIOLOGY LTD

Ratings & Reviews

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General Payments

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

**Payments by Company**
Allergan Inc.	$144 VRAYLAR $80	BYSTOLIC $50	NAMZARIC $14
Medtronic USA, Inc.	$128 KYPHON Balloon Kyphoplasty $128
Pharmacyclics LLC, An AbbVie Company	$25 EPKINLY $25
Zealand Pharma US, Inc.	$16 V-GO DISPOSABLE INSULIN DELIVERY $16
Novartis Pharmaceuticals Corporation	$15 ZYKADIA $15
Other	$13 SPRYCEL $13

**Types of Payments**
Food and Beverage	$341

Biography

Dr. John Loh is a medical specialist in diagnostic radiology. Dr. Loh graduated from Washington University in St. Louis School of Medicine and then he performed his residency at Mallinckrodt Institute of Radiology. He is professionally affiliated with Mercy Medical Center Redding. Dignity Health reports that he is not accepting new patients.