In 2023, among providers in related specialties within California, Dr. John T. Armstrong JR., MD performed more gynecologic procedures, non-obstetric transvaginal ultrasound, vulvar colposcopy, whole breast ultrasound, and women's imaging procedures for Medicare patients than 95% of them and he also had a list price for breast imaging, breast ultrasound, cervical colposcopy, colposcopy, diagnostic colposcopy, non-obstetric transvaginal ultrasound, transvaginal ultrasound, vulvar colposcopy, whole breast ultrasound, and women's imaging that was lower than the list prices billed to Medicare by 95% 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.

Top 10%

By Volume:

ultrasound

By Affordability:

placement of vaginal support device

In 2023, among providers in related specialties within California, Dr. John T. Armstrong JR., MD performed more ultrasound (sonogram) procedures for Medicare patients than 90% of them and he also had a list price for placement of vaginal support device that was lower than the list prices billed to Medicare by 90% 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.

Top 25%

By Volume:

By Affordability:

cervical cancer screening

cytology

gynecologic cytology

gynecologic pathology

Pap screening

Pap test

urinalysis

In 2012, among providers in related specialties within California, Dr. John T. Armstrong JR., MD performed more breast exam, lab tests, Pap screening, pelvic exam, preventive care, and urinalysis procedures for Medicare patients than 75% of them and he also had a list price for cervical cancer screening, cytology, gynecologic cytology, gynecologic pathology, Pap screening, Pap test, and urinalysis 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 T. Armstrong JR., MD treated as a gynecologist in Napa, CA during 2012 were lab tests, ultrasound (sonogram), women's imaging and gynecologic procedures.

Volume of procedures performed by Dr. John T. Armstrong JR., MD for Medicare patients.

breast exam	131
breast procedures	116
diagnostic procedures	13
doctor visit	641
gynecologic procedures	263
lab tests	366
pelvic imaging	228
ultrasound (sonogram)	344
women's imaging	344

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. John T. Armstrong JR., MD treated as a gynecologist in Napa, CA during 2013 were ultrasound (sonogram), women's imaging, lab tests and pelvic imaging.

Volume of procedures performed by Dr. John T. Armstrong JR., MD for Medicare patients.

breast exam	121
breast procedures	111
cytology	100
doctor visit	584
gynecologic pathology	100
gynecologic procedures	250
lab tests	342
pelvic imaging	250
preventive care	100
ultrasound (sonogram)	361
women's imaging	361

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. John T. Armstrong JR., MD.

**Gender**
Male	0
Female	320

**Ethnicity**
Non-Hispanic White	297
Black	0
Hispanic	12
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	165
From 75 to 84	99
85 and over	30
Less than 65	26

Conditions of Medicare patients treated by Dr. John T. Armstrong JR., MD in 2013

Hypertension	52
High Cholesterol	45
Stroke	0
Ischemic Heart Disease	18
Depression	12
Chronic Kidney Disease	9
Asthma	6
Osteoperosis	14
Atrial Fibrilation	5
Heart Failure	9
Chronic Obstructive Pulmonary Disease	0
Diabetes	13
Dementia	5
Cancer	13

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. John T. Armstrong JR., MD treated as a gynecologist in Napa, CA during 2014 were ultrasound (sonogram), women's imaging, lab tests and gynecologic procedures.

Volume of procedures performed by Dr. John T. Armstrong JR., MD for Medicare patients.

breast exam	125
breast procedures	102
cytology	125
doctor visit	549
gynecologic pathology	125
gynecologic procedures	241
lab tests	264
pelvic imaging	218
preventive care	125
ultrasound (sonogram)	320
women's imaging	320

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. John T. Armstrong JR., MD.

**Gender**
Male	0
Female	312

**Ethnicity**
Non-Hispanic White	291
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	165
From 75 to 84	84
85 and over	40
Less than 65	23

Conditions of Medicare patients treated by Dr. John T. Armstrong JR., MD in 2014

Hypertension	48
High Cholesterol	43
Stroke	0
Ischemic Heart Disease	18
Depression	13
Chronic Kidney Disease	9
Asthma	6
Osteoperosis	11
Atrial Fibrilation	8
Heart Failure	6
Chronic Obstructive Pulmonary Disease	0
Diabetes	13
Dementia	5
Cancer	12

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. John T. Armstrong JR., MD treated as a gynecologist in Napa, CA during 2015 were ultrasound (sonogram), women's imaging, breast procedures and gynecologic procedures.

Volume of procedures performed by Dr. John T. Armstrong JR., MD for Medicare patients.

breast exam	125
breast procedures	268
cytology	106
doctor visit	545
gynecologic pathology	106
gynecologic procedures	262
lab tests	187
pelvic imaging	220
preventive care	106
ultrasound (sonogram)	488
women's imaging	488

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. John T. Armstrong JR., MD.

**Gender**
Male	0
Female	604

**Ethnicity**
Non-Hispanic White	564
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	316
From 75 to 84	176
85 and over	72
Less than 65	40

Conditions of Medicare patients treated by Dr. John T. Armstrong JR., MD in 2015

Hypertension	47
High Cholesterol	42
Stroke	0
Ischemic Heart Disease	16
Depression	13
Chronic Kidney Disease	8
Asthma	7
Osteoperosis	13
Atrial Fibrilation	7
Heart Failure	9
Chronic Obstructive Pulmonary Disease	4
Diabetes	11
Dementia	5
Cancer	10

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. John T. Armstrong JR., MD treated as a gynecologist in Napa, CA during 2016 were ultrasound (sonogram), women's imaging, breast procedures and pelvic imaging.

Volume of procedures performed by Dr. John T. Armstrong JR., MD for Medicare patients.

breast exam	96
breast procedures	484
cytology	116
doctor visit	577
gynecologic pathology	116
gynecologic procedures	225
lab tests	189
pelvic imaging	235
preventive care	116
ultrasound (sonogram)	719
women's imaging	719

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. John T. Armstrong JR., MD.

**Gender**
Male	0
Female	313

**Ethnicity**
Non-Hispanic White	293
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	167
From 75 to 84	85
85 and over	37
Less than 65	24

Conditions of Medicare patients treated by Dr. John T. Armstrong JR., MD in 2016

Hypertension	49
High Cholesterol	47
Stroke	0
Ischemic Heart Disease	20
Depression	12
Chronic Kidney Disease	9
Asthma	8
Osteoperosis	15
Atrial Fibrilation	7
Heart Failure	9
Chronic Obstructive Pulmonary Disease	4
Diabetes	9
Dementia	5
Cancer	7

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. John T. Armstrong JR., MD treated as a gynecologist in Napa, CA during 2017 were ultrasound (sonogram), women's imaging, breast procedures and lab tests.

Volume of procedures performed by Dr. John T. Armstrong JR., MD for Medicare patients.

breast exam	102
breast procedures	592
catheterization	27
cytology	80
diagnostic procedures	18
doctor visit	548
gynecologic pathology	80
gynecologic procedures	222
lab tests	265
pelvic imaging	218
preventive care	80
ultrasound (sonogram)	810
urologic procedures	27
women's imaging	810

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. John T. Armstrong JR., MD.

**Gender**
Male	0
Female	305

**Ethnicity**
Non-Hispanic White	289
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	153
From 75 to 84	99
85 and over	32
Less than 65	21

Conditions of Medicare patients treated by Dr. John T. Armstrong JR., MD in 2017

Hypertension	45
High Cholesterol	45
Stroke	0
Ischemic Heart Disease	17
Depression	13
Chronic Kidney Disease	10
Asthma	9
Osteoperosis	15
Atrial Fibrilation	7
Heart Failure	8
Chronic Obstructive Pulmonary Disease	4
Diabetes	9
Dementia	5
Cancer	10

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. John T. Armstrong JR., MD treated as a gynecologist in Napa, CA during 2018 were ultrasound (sonogram), women's imaging, breast procedures and gynecologic procedures.

Volume of procedures performed by Dr. John T. Armstrong JR., MD for Medicare patients.

breast exam	128
breast procedures	482
cytology	93
doctor visit	445
gynecologic pathology	93
gynecologic procedures	266
lab tests	109
pelvic imaging	227
preventive care	93
ultrasound (sonogram)	709
women's imaging	709

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. John T. Armstrong JR., MD.

**Gender**
Male	0
Female	300

**Ethnicity**
Non-Hispanic White	277
Black	0
Hispanic	11
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	152
From 75 to 84	99
85 and over	30
Less than 65	19

Conditions of Medicare patients treated by Dr. John T. Armstrong JR., MD in 2018

Hypertension	48
High Cholesterol	51
Stroke	0
Ischemic Heart Disease	17
Depression	17
Chronic Kidney Disease	9
Asthma	7
Osteoperosis	17
Atrial Fibrilation	7
Heart Failure	8
Chronic Obstructive Pulmonary Disease	4
Diabetes	8
Dementia	5
Cancer	8

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. John T. Armstrong JR., MD treated as a gynecologist in Napa, CA during 2019 were ultrasound (sonogram), women's imaging, breast procedures and gynecologic procedures.

Volume of procedures performed by Dr. John T. Armstrong JR., MD for Medicare patients.

application of medication for vaginal infection	14
breast exam	112
breast procedures	496
cytology	115
doctor visit	516
gynecologic pathology	115
gynecologic procedures	248
lab tests	129
pelvic imaging	221
preventive care	115
ultrasound (sonogram)	717
vaginal irrigation (douche)	14
women's imaging	717

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. John T. Armstrong JR., MD.

**Gender**
Male	0
Female	287

**Ethnicity**
Non-Hispanic White	268
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	146
From 75 to 84	103
85 and over	27
Less than 65	11

Conditions of Medicare patients treated by Dr. John T. Armstrong JR., MD in 2019

Hypertension	49
High Cholesterol	53
Stroke	0
Ischemic Heart Disease	16
Depression	17
Chronic Kidney Disease	12
Asthma	8
Osteoperosis	18
Atrial Fibrilation	7
Heart Failure	10
Chronic Obstructive Pulmonary Disease	0
Diabetes	10
Dementia	4
Cancer	9

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. John T. Armstrong JR., MD treated as a gynecologist in Napa, CA during 2020 were ultrasound (sonogram), women's imaging, breast procedures and pelvic imaging.

Volume of procedures performed by Dr. John T. Armstrong JR., MD for Medicare patients.

abdominal imaging	21
breast exam	40
breast procedures	800
cytology	43
doctor visit	560
gynecologic pathology	43
gynecologic procedures	131
lab tests	75
pelvic imaging	242
placement of vaginal support device	37
preventive care	43
ultrasound (sonogram)	1042
vascular procedures	21
women's imaging	1021

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. John T. Armstrong JR., MD.

**Gender**
Male	0
Female	272

**Ethnicity**
Non-Hispanic White	257
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	136
From 75 to 84	97
85 and over	27
Less than 65	12

Conditions of Medicare patients treated by Dr. John T. Armstrong JR., MD in 2020

Hypertension	44
High Cholesterol	45
Stroke	0
Ischemic Heart Disease	15
Depression	18
Chronic Kidney Disease	11
Asthma	8
Osteoperosis	18
Atrial Fibrilation	6
Heart Failure	9
Chronic Obstructive Pulmonary Disease	0
Diabetes	7
Dementia	5
Cancer	6

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. John T. Armstrong JR., MD treated as a gynecologist in Napa, CA during 2021 were ultrasound (sonogram), women's imaging, breast procedures and gynecologic procedures.

Volume of procedures performed by Dr. John T. Armstrong JR., MD for Medicare patients.

application of medication for vaginal infection	48
breast exam	90
breast procedures	792
cytology	102
diagnostic procedures	14
doctor visit	575
gynecologic pathology	102
gynecologic procedures	285
lab tests	78
pelvic imaging	193
placement of vaginal support device	56
preventive care	102
ultrasound (sonogram)	985
vaginal irrigation (douche)	48
women's imaging	985

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. John T. Armstrong JR., MD.

**Gender**
Male	0
Female	240

**Ethnicity**
Non-Hispanic White	223
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	109
From 75 to 84	98
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. John T. Armstrong JR., MD in 2021

Hypertension	45
High Cholesterol	52
Stroke	0
Ischemic Heart Disease	15
Depression	15
Chronic Kidney Disease	11
Asthma	8
Osteoperosis	24
Atrial Fibrilation	8
Heart Failure	7
Chronic Obstructive Pulmonary Disease	0
Diabetes	8
Dementia	5
Cancer	10

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. John T. Armstrong JR., MD treated as a gynecologist in Napa, CA during 2022 were ultrasound (sonogram), women's imaging, breast procedures and gynecologic procedures.

Volume of procedures performed by Dr. John T. Armstrong JR., MD for Medicare patients.

application of medication for vaginal infection	43
breast exam	92
breast procedures	568
cytology	93
diagnostic procedures	14
doctor visit	638
gynecologic pathology	93
gynecologic procedures	350
lab tests	98
pelvic imaging	186
preventive care	93
ultrasound (sonogram)	754
vaginal irrigation (douche)	43
women's imaging	754

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. John T. Armstrong JR., MD.

**Gender**
Male	0
Female	228

**Ethnicity**
Non-Hispanic White	215
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	113
From 75 to 84	85
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. John T. Armstrong JR., MD in 2022

Hypertension	51
High Cholesterol	64
Stroke	5
Ischemic Heart Disease	9
Depression	12
Chronic Kidney Disease	8
Asthma	10
Osteoperosis	31
Atrial Fibrilation	11
Heart Failure	0
Chronic Obstructive Pulmonary Disease	5
Diabetes	10
Dementia	0
Cancer	12

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. John T. Armstrong JR., MD for Medicare patients.

The highest averages for the top procedures that Dr. John T. Armstrong JR., MD treated as a gynecologist in Napa, CA were ultrasound (sonogram), women's imaging, breast procedures and gynecologic procedures.

abdominal imaging	21
application of medication for vaginal infection	35
breast exam	105
breast procedures	437
catheterization	27
cytology	97
diagnostic procedures	14
doctor visit	561
gynecologic pathology	97
gynecologic procedures	249
lab tests	191
pelvic imaging	221
preventive care	97
ultrasound (sonogram)	659
urologic procedures	27
vaginal irrigation (douche)	35
vascular procedures	21
women's imaging	657

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. John T. Armstrong JR., MD.

**Gender**
Male	0
Female	289

**Ethnicity**
Black / African American	0
Asian / Pacific Islander	0
Non-Hispanic White	270
Native American / Alaskan Native	0
Hispanic	2
Other	0

**Age**
75 to 84	93
85 and over	26
Less than 65	16
65 to 74	147

Average of Total of Conditions of Medicare patients treated by Dr. John T. Armstrong JR., MD From 2012 - 2022

The highest averages of the most common conditions of Medicare patients that Dr. John T. Armstrong JR., MD treated were high cholesterol, hypertension, osteoperosis and ischemic heart disease.

Hypertension	43
High Cholesterol	44
Stroke	0
Ischemic Heart Disease	14
Depression	12
Chronic Kidney Disease	8
Asthma	7
Osteoporosis	16
Heart Failure	6
Chronic Obstructive Pulmonary Disease	1
Diabetes	8
Atrial Fibrillation	6
Dementia	4
Cancer	8

Education & Training

He has a state license in California.

Licensed In: California

Ratings & Reviews

Dr. John T. Armstrong JR., MD has a high overall rating with an average of 4.2 out of 5 stars based on 5 ratings. We collect ratings and reviews of Dr. John T. Armstrong JR., MD from all over the web to help you find the right in Napa, CA.

4.2

Overall Rating

(5 Ratings)

Leave a Review

General Payments

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

**Payments by Company**
Radius Health, Inc.	$726 Tymlos $726
Amgen Inc.	$342 Prolia $234	EVENITY $108
Pfizer Inc.	$273 ESTRING $85	NURTEC ODT $60	COLOGUARD $36	MYFEMBREE $36	PREMARIN ORALS $17	Other $38
Bard Peripheral Vascular, Inc.	$242 Vascular $242
AbbVie, Inc.	$136 Orilissa $136
Other	$1,260 Osphena $154	LYNPARZA $134	GYN $130	OFIRMEV $125	Macroplastique $124	Other $595

**Types of Payments**
Food and Beverage	$2,905
Education	$69
Gift	$4

Biography

Dr. John Armstrong works as a gynecology. Patients rated Dr. Armstrong highly, giving him an average of 4.0 stars (out of 5). He is a graduate of Texas Tech University Health Sciences Center, Paul L. Foster School of Medicine.

Select Year:

Dr. John T. Armstrong JR., MD

Office Locations

Noteworthy Medicare Patient Procedures Performed by Dr. John T. Armstrong JR., MD in 2023

By Volume:

By Affordability:

By Volume:

By Affordability:

By Volume:

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. John T. Armstrong JR., MD in 2013

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

2014 Medicare Patient Data

Conditions of Medicare patients treated by Dr. John T. Armstrong JR., MD in 2014

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

2015 Medicare Patient Data

Conditions of Medicare patients treated by Dr. John T. Armstrong JR., MD in 2015

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

2016 Medicare Patient Data

Conditions of Medicare patients treated by Dr. John T. Armstrong JR., MD in 2016

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

2017 Medicare Patient Data

Conditions of Medicare patients treated by Dr. John T. Armstrong JR., MD in 2017

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

2018 Medicare Patient Data

Conditions of Medicare patients treated by Dr. John T. Armstrong JR., MD in 2018

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

2019 Medicare Patient Data

Conditions of Medicare patients treated by Dr. John T. Armstrong JR., MD in 2019

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

2020 Medicare Patient Data

Conditions of Medicare patients treated by Dr. John T. Armstrong JR., MD in 2020

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

2021 Medicare Patient Data

Conditions of Medicare patients treated by Dr. John T. Armstrong JR., MD in 2021

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

2022 Medicare Patient Data

Conditions of Medicare patients treated by Dr. John T. Armstrong JR., 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. John T. Armstrong JR., MD From 2012 - 2022

Education & Training

Ratings & Reviews

General Payments

Biography

Other Providers in Napa, CA