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Dr. Royce H. Johnson, MD, FACP

(Dr. Royce Harwood Johnson, MD)

(1 Rating)

Specializes in: Internal Medicine (Adult Medicine) and Infectious Disease

University of California, Irvine, School of Medicine (1970)

2201 Mt Vernon Avenue Suite 211
Bakersfield, CA 93306

(661) 872-7000

Dr. Royce H. Johnson, MD, FACP is an internist in Bakersfield, CA specializing in internal medicine (adult medicine) and infectious disease. He graduated from University of California, Irvine, School of Medicine in 1970 and has 56 years of experience. Dr. Royce H. Johnson, MD, FACP is affiliated with KERN COUNTY HOSPITAL AUTHORITY.

Office Locations

2201 Mt Vernon Avenue Suite 211
Bakersfield, CA 93306

(661) 872-7000

(661) 872-0499

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In The News (see more mentions in the news)

“"There is no question that the number of cases of coccidioidomycosis is enormously higher than before," said Dr. Royce Johnson, chief of the division of infectious disease and director of the...”—"California could face another record-breaking year of Valley fever", NBC News, May 2025

“"One in four Filipinos or Malaysians who inhale the spores will develop serious complications," said Dr. Royce Johnson, chief of infectious disease at Kern Medical Center.”—"Epidemic of Valley Fever Ravaging Kern County : Public health: The disease has exploded tenfold since summer of 1991. Five other counties are also affected.", Los Angeles Times, April 2025

“"If you see a patient with pneumonia, that either lives in the Southwest or has traveled to the Southwest, then Valley fever needs to be in what we call the differential diagnosis, meaning it's one...”—"Valley fever, historically found only in the Southwest, is spreading. It can have devastating consequences.", NBC News, January 2023

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. Royce H. Johnson, MD, FACP treated as an internist in Bakersfield, CA during 2012 were hospital care, inpatient care, spinal procedures and diagnostic procedures.

Volume of procedures performed by Dr. Royce H. Johnson, MD, FACP for Medicare patients.

diagnostic procedures	24
doctor visit	293
hospital care	57
inpatient care	57
spinal procedures	43

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Royce H. Johnson, MD, FACP treated as an internist in Bakersfield, CA during 2013 were hospital care, inpatient care, diagnostic procedures and spinal procedures.

Volume of procedures performed by Dr. Royce H. Johnson, MD, FACP for Medicare patients.

diagnostic procedures	27
doctor visit	233
hospital care	64
inpatient care	64
spinal procedures	27

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Royce H. Johnson, MD, FACP.

**Gender**
Male	69
Female	47

**Ethnicity**
Non-Hispanic White	47
Black	0
Hispanic	52
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	39
From 75 to 84	0
85 and over	0
Less than 65	62

Conditions of Medicare patients treated by Dr. Royce H. Johnson, MD, FACP in 2013

Hypertension	65
High Cholesterol	37
Stroke	0
Ischemic Heart Disease	30
Depression	18
Chronic Kidney Disease	30
Asthma	12
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	21
Chronic Obstructive Pulmonary Disease	17
Diabetes	43
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Royce H. Johnson, MD, FACP treated as an internist in Bakersfield, CA during 2014 were hospital care and inpatient care.

Volume of procedures performed by Dr. Royce H. Johnson, MD, FACP for Medicare patients.

doctor visit	243
hospital care	84
inpatient care	84

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Royce H. Johnson, MD, FACP.

**Gender**
Male	67
Female	49

**Ethnicity**
Non-Hispanic White	48
Black	0
Hispanic	49
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	42
From 75 to 84	0
85 and over	0
Less than 65	59

Conditions of Medicare patients treated by Dr. Royce H. Johnson, MD, FACP in 2014

Hypertension	66
High Cholesterol	37
Stroke	0
Ischemic Heart Disease	27
Depression	19
Chronic Kidney Disease	28
Asthma	9
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	18
Chronic Obstructive Pulmonary Disease	11
Diabetes	41
Dementia	15
Cancer	10

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Royce H. Johnson, MD, FACP treated as an internist in Bakersfield, CA during 2015 were hospital care, inpatient care and spinal procedures.

Volume of procedures performed by Dr. Royce H. Johnson, MD, FACP for Medicare patients.

doctor visit	184
hospital care	80
inpatient care	80
spinal procedures	24

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Royce H. Johnson, MD, FACP.

**Gender**
Male	132
Female	78

**Ethnicity**
Non-Hispanic White	90
Black	0
Hispanic	82
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	72
From 75 to 84	0
85 and over	0
Less than 65	112

Conditions of Medicare patients treated by Dr. Royce H. Johnson, MD, FACP in 2015

Hypertension	66
High Cholesterol	44
Stroke	0
Ischemic Heart Disease	25
Depression	22
Chronic Kidney Disease	34
Asthma	13
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	20
Chronic Obstructive Pulmonary Disease	12
Diabetes	41
Dementia	18
Cancer	0

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Royce H. Johnson, MD, FACP treated as an internist in Bakersfield, CA during 2016 were hospital care and inpatient care.

Volume of procedures performed by Dr. Royce H. Johnson, MD, FACP for Medicare patients.

doctor visit	159
hospital care	159
inpatient care	159

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Royce H. Johnson, MD, FACP.

**Gender**
Male	63
Female	53

**Ethnicity**
Non-Hispanic White	50
Black	0
Hispanic	36
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	47
From 75 to 84	0
85 and over	0
Less than 65	54

Conditions of Medicare patients treated by Dr. Royce H. Johnson, MD, FACP in 2016

Hypertension	71
High Cholesterol	47
Stroke	0
Ischemic Heart Disease	33
Depression	28
Chronic Kidney Disease	41
Asthma	21
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	24
Chronic Obstructive Pulmonary Disease	17
Diabetes	41
Dementia	17
Cancer	0

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Royce H. Johnson, MD, FACP treated as an internist in Bakersfield, CA during 2017 were hospital care and inpatient care.

Volume of procedures performed by Dr. Royce H. Johnson, MD, FACP for Medicare patients.

doctor visit	176
hospital care	143
inpatient care	143

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Royce H. Johnson, MD, FACP.

**Gender**
Male	73
Female	59

**Ethnicity**
Non-Hispanic White	60
Black	0
Hispanic	58
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	53
From 75 to 84	0
85 and over	0
Less than 65	60

Conditions of Medicare patients treated by Dr. Royce H. Johnson, MD, FACP in 2017

Hypertension	75
High Cholesterol	56
Stroke	11
Ischemic Heart Disease	40
Depression	35
Chronic Kidney Disease	57
Asthma	12
Osteoperosis	8
Atrial Fibrilation	0
Heart Failure	32
Chronic Obstructive Pulmonary Disease	23
Diabetes	49
Dementia	18
Cancer	8

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

Volume of procedures performed by Dr. Royce H. Johnson, MD, FACP for Medicare patients.

doctor visit	143

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Royce H. Johnson, MD, FACP.

**Gender**
Male	46
Female	34

**Ethnicity**
Non-Hispanic White	34
Black	0
Hispanic	33
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	34
From 75 to 84	0
85 and over	0
Less than 65	32

Conditions of Medicare patients treated by Dr. Royce H. Johnson, MD, FACP in 2018

Hypertension	71
High Cholesterol	53
Stroke	0
Ischemic Heart Disease	33
Depression	29
Chronic Kidney Disease	45
Asthma	0
Osteoperosis	14
Atrial Fibrilation	0
Heart Failure	28
Chronic Obstructive Pulmonary Disease	15
Diabetes	30
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Royce H. Johnson, MD, FACP treated as an internist in Bakersfield, CA during 2019 were hospital care and inpatient care.

Volume of procedures performed by Dr. Royce H. Johnson, MD, FACP for Medicare patients.

doctor visit	144
hospital care	24
inpatient care	24

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Royce H. Johnson, MD, FACP.

**Gender**
Male	52
Female	30

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

**Age**
From 65 to 74	40
From 75 to 84	0
85 and over	0
Less than 65	30

Conditions of Medicare patients treated by Dr. Royce H. Johnson, MD, FACP in 2019

Hypertension	70
High Cholesterol	55
Stroke	0
Ischemic Heart Disease	27
Depression	17
Chronic Kidney Disease	45
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	32
Chronic Obstructive Pulmonary Disease	0
Diabetes	35
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

Volume of procedures performed by Dr. Royce H. Johnson, MD, FACP for Medicare patients.

doctor visit	138

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Royce H. Johnson, MD, FACP.

**Gender**
Male	50
Female	30

**Ethnicity**
Non-Hispanic White	32
Black	0
Hispanic	37
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	41
From 75 to 84	0
85 and over	0
Less than 65	27

Conditions of Medicare patients treated by Dr. Royce H. Johnson, MD, FACP in 2020

Hypertension	73
High Cholesterol	54
Stroke	0
Ischemic Heart Disease	39
Depression	15
Chronic Kidney Disease	48
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	23
Chronic Obstructive Pulmonary Disease	15
Diabetes	44
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

Volume of procedures performed by Dr. Royce H. Johnson, MD, FACP for Medicare patients.

doctor visit	158

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Royce H. Johnson, MD, FACP.

**Gender**
Male	47
Female	21

**Ethnicity**
Non-Hispanic White	35
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	31
From 75 to 84	0
85 and over	0
Less than 65	24

Conditions of Medicare patients treated by Dr. Royce H. Johnson, MD, FACP in 2021

Hypertension	68
High Cholesterol	49
Stroke	0
Ischemic Heart Disease	31
Depression	0
Chronic Kidney Disease	49
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	0
Chronic Obstructive Pulmonary Disease	19
Diabetes	32
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Royce H. Johnson, MD, FACP treated as an internist in Bakersfield, CA during 2022 were hospital care and inpatient care.

Volume of procedures performed by Dr. Royce H. Johnson, MD, FACP for Medicare patients.

doctor visit	119
hospital care	15
inpatient care	15

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Royce H. Johnson, MD, FACP.

**Gender**
Male	60
Female	31

**Ethnicity**
Non-Hispanic White	37
Black	0
Hispanic	41
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	42
From 75 to 84	0
85 and over	0
Less than 65	37

Conditions of Medicare patients treated by Dr. Royce H. Johnson, MD, FACP in 2022

Hypertension	74
High Cholesterol	66
Stroke	15
Ischemic Heart Disease	27
Depression	15
Chronic Kidney Disease	37
Asthma	0
Osteoperosis	0
Atrial Fibrilation	16
Heart Failure	23
Chronic Obstructive Pulmonary Disease	20
Diabetes	44
Dementia	0
Cancer	13

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. Royce H. Johnson, MD, FACP for Medicare patients.

The highest averages for the top procedures that Dr. Royce H. Johnson, MD, FACP treated as an internist in Bakersfield, CA were hospital care, inpatient care, spinal procedures and diagnostic procedures.

diagnostic procedures	25
doctor visit	180
hospital care	78
inpatient care	78
spinal procedures	31

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. Royce H. Johnson, MD, FACP.

**Gender**
Male	59
Female	39

**Ethnicity**
Black / African American	0
Asian / Pacific Islander	0
Non-Hispanic White	39
Hispanic	38
Native American / Alaskan Native	0
Other	0

**Age**
75 to 84	0
85 and over	0
Less than 65	45
65 to 74	40

Average of Total of Conditions of Medicare patients treated by Dr. Royce H. Johnson, MD, FACP From 2012 - 2022

The highest averages of the most common conditions of Medicare patients that Dr. Royce H. Johnson, MD, FACP treated were hypertension, high cholesterol, chronic kidney disease and diabetes.

Hypertension	63
High Cholesterol	45
Stroke	2
Ischemic Heart Disease	28
Depression	18
Chronic Kidney Disease	37
Asthma	6
Osteoporosis	2
Heart Failure	20
Chronic Obstructive Pulmonary Disease	13
Diabetes	36
Atrial Fibrillation	1
Cancer	2
Dementia	6

Education & Training

Dr. Royce H. Johnson, MD, FACP graduated from University of California, Irvine, School of Medicine in 1970. He has a state license in California.

Medical School: University of California, Irvine, School of Medicine (1970)

Licensed In: California

Affiliations & Hospitals

Dr. Royce H. Johnson, MD, FACP is associated with these hospitals and organizations:

KERN COUNTY HOSPITAL AUTHORITY

Ratings & Reviews

Dr. Royce H. Johnson, MD, FACP has an exceptional overall rating with an average of 5.0 out of 5 stars based on 1 ratings. We collect ratings and reviews of Dr. Royce H. Johnson, MD, FACP from all over the web to help you find the right in Bakersfield, CA.

Overall Rating

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General Payments

These charts describe general payments received by Dr. Royce H. Johnson, MD, FACP. Doctors may receive payments for a number of reasons, including meal compensation, travel compensation, and consulting.

**Payments by Company**
Astellas Pharma US Inc	$29,424 Cresemba $9,439	MYCAMINE $8,824	AmBisome $6,755	Lexiscan $15	$4,391
Horizon Therapeutics plc	$4,130 Actimmune $4,130
Allergan Inc.	$2,522 TEFLARO $1,878	DALVANCE $345	AVYCAZ $299
Actavis Pharma Inc	$2,461 DALVANCE $2,283	AVYCAZ $136	TEFLARO $37	DELZICOL $5
Nielsen BioSciences, Inc.	$2,000 Spherusol $2,000
Other	$4,300 ZERBAXA $476	ELIQUIS $432	XARELTO $426	ISENTRESS $277	TEFLARO $263	Other $2,426

**Types of Payments**
Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program	$22,550
Food and Beverage	$7,386
Consulting Fee	$6,200
Honoraria	$4,215
Travel and Lodging	$2,247
Other	$2,239

Biography

Dr. Royce Johnson is an infectious disease and general practice specialist in Bakersfield, CA. He studied medicine at the University of California, Irvine, School of Medicine.