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Home > PA Providers > Family Physicians & Family Medicine Specialists

Dr. John J. Messmer, MD

(481 Ratings)

Specializes in: Family Medicine and Geriatrics (Elderly Care)

Penn State College of Medicine (1977)

941 Park Drive
Palmyra, PA 17078

1-800-243-1455

Dr. John J. Messmer, MD is a family medicine practitioner in Palmyra, PA specializing in family medicine and geriatrics (elderly care). He graduated from Penn State College of Medicine in 1977 and has 49 years of experience. Dr. John J. Messmer, MD is affiliated with Penn State Health.

Office Locations

941 Park Drive
Palmyra, PA 17078

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In The News

“"Early in practice, if I had a clinical question to research, I had to go to the library, pull out multiple years of the Index Medicus, look up the topic, write down the references, go to the...”—"The Top 10 Medical Advances of the Decade", MedPage Today, December 2009

“Physicians also are working harder, using a combination of medication and aggressive treatments to bring the diseases to heel, said Dr. John Messmer, a family practice physician and associate...”—"Death takes a holiday - sort of - in Pennsylvania ** Healthy living helps drive state's mortality rate to lowest point in 15 years.", The Morning Call, June 2006

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

Volume of procedures performed by Dr. John J. Messmer, MD for Medicare patients.

doctor visit	407

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

Volume of procedures performed by Dr. John J. Messmer, MD for Medicare patients.

doctor visit	335

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. John J. Messmer, MD.

**Gender**
Male	79
Female	90

**Age**
From 65 to 74	56
From 75 to 84	60
85 and over	41
Less than 65	12

Conditions of Medicare patients treated by Dr. John J. Messmer, MD in 2013

Hypertension	63
High Cholesterol	75
Stroke	0
Ischemic Heart Disease	31
Depression	14
Chronic Kidney Disease	18
Asthma	0
Osteoperosis	7
Atrial Fibrilation	8
Heart Failure	14
Chronic Obstructive Pulmonary Disease	8
Diabetes	28
Dementia	11
Cancer	7

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. John J. Messmer, MD treated as a family medicine practitioner in Palmyra, PA during 2014 were nursing home care, hospital care and inpatient care.

Volume of procedures performed by Dr. John J. Messmer, MD for Medicare patients.

doctor visit	315
hospital care	12
inpatient care	12
nursing home care	72

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. John J. Messmer, MD.

**Gender**
Male	85
Female	106

**Age**
From 65 to 74	56
From 75 to 84	72
85 and over	47
Less than 65	16

Conditions of Medicare patients treated by Dr. John J. Messmer, MD in 2014

Hypertension	70
High Cholesterol	73
Stroke	0
Ischemic Heart Disease	29
Depression	16
Chronic Kidney Disease	25
Asthma	0
Osteoperosis	8
Atrial Fibrilation	9
Heart Failure	17
Chronic Obstructive Pulmonary Disease	10
Diabetes	27
Dementia	15
Cancer	8

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. John J. Messmer, MD treated as a family medicine practitioner in Palmyra, PA during 2015 were nursing home care.

Volume of procedures performed by Dr. John J. Messmer, MD for Medicare patients.

doctor visit	284
nursing home care	123

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. John J. Messmer, MD.

**Gender**
Male	188
Female	186

**Age**
From 65 to 74	100
From 75 to 84	136
85 and over	102
Less than 65	36

Conditions of Medicare patients treated by Dr. John J. Messmer, MD in 2015

Hypertension	68
High Cholesterol	75
Stroke	0
Ischemic Heart Disease	34
Depression	26
Chronic Kidney Disease	33
Asthma	7
Osteoperosis	12
Atrial Fibrilation	14
Heart Failure	21
Chronic Obstructive Pulmonary Disease	11
Diabetes	32
Dementia	17
Cancer	9

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. John J. Messmer, MD treated as a family medicine practitioner in Palmyra, PA during 2016 were nursing home care.

Volume of procedures performed by Dr. John J. Messmer, MD for Medicare patients.

doctor visit	283
nursing home care	115

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. John J. Messmer, MD.

**Gender**
Male	78
Female	95

**Age**
From 65 to 74	50
From 75 to 84	64
85 and over	43
Less than 65	16

Conditions of Medicare patients treated by Dr. John J. Messmer, MD in 2016

Hypertension	65
High Cholesterol	72
Stroke	0
Ischemic Heart Disease	29
Depression	16
Chronic Kidney Disease	35
Asthma	10
Osteoperosis	7
Atrial Fibrilation	9
Heart Failure	18
Chronic Obstructive Pulmonary Disease	8
Diabetes	25
Dementia	11
Cancer	8

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. John J. Messmer, MD treated as a family medicine practitioner in Palmyra, PA during 2017 were nursing home care.

Volume of procedures performed by Dr. John J. Messmer, MD for Medicare patients.

doctor visit	302
nursing home care	124

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. John J. Messmer, MD.

**Gender**
Male	85
Female	96

**Age**
From 65 to 74	62
From 75 to 84	66
85 and over	40
Less than 65	13

Conditions of Medicare patients treated by Dr. John J. Messmer, MD in 2017

Hypertension	56
High Cholesterol	35
Stroke	0
Ischemic Heart Disease	25
Depression	17
Chronic Kidney Disease	31
Asthma	0
Osteoperosis	0
Atrial Fibrilation	7
Heart Failure	18
Chronic Obstructive Pulmonary Disease	8
Diabetes	25
Dementia	12
Cancer	8

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. John J. Messmer, MD treated as a family medicine practitioner in Palmyra, PA during 2018 were nursing home care.

Volume of procedures performed by Dr. John J. Messmer, MD for Medicare patients.

doctor visit	303
nursing home care	92

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. John J. Messmer, MD.

**Gender**
Male	82
Female	109

**Ethnicity**
Non-Hispanic White	180
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	69
From 75 to 84	69
85 and over	34
Less than 65	19

Conditions of Medicare patients treated by Dr. John J. Messmer, MD in 2018

Hypertension	65
High Cholesterol	63
Stroke	0
Ischemic Heart Disease	26
Depression	21
Chronic Kidney Disease	30
Asthma	6
Osteoperosis	9
Atrial Fibrilation	10
Heart Failure	19
Chronic Obstructive Pulmonary Disease	9
Diabetes	28
Dementia	14
Cancer	7

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. John J. Messmer, MD treated as a family medicine practitioner in Palmyra, PA during 2019 were nursing home care.

Volume of procedures performed by Dr. John J. Messmer, MD for Medicare patients.

doctor visit	292
nursing home care	59

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. John J. Messmer, MD.

**Gender**
Male	91
Female	95

**Age**
From 65 to 74	70
From 75 to 84	55
85 and over	49
Less than 65	12

Conditions of Medicare patients treated by Dr. John J. Messmer, MD in 2019

Hypertension	70
High Cholesterol	75
Stroke	0
Ischemic Heart Disease	31
Depression	24
Chronic Kidney Disease	33
Asthma	0
Osteoperosis	9
Atrial Fibrilation	15
Heart Failure	20
Chronic Obstructive Pulmonary Disease	9
Diabetes	25
Dementia	16
Cancer	9

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

Volume of procedures performed by Dr. John J. Messmer, MD for Medicare patients.

doctor visit	291

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. John J. Messmer, MD.

**Gender**
Male	86
Female	78

**Age**
From 65 to 74	59
From 75 to 84	56
85 and over	38
Less than 65	11

Conditions of Medicare patients treated by Dr. John J. Messmer, MD in 2020

Hypertension	67
High Cholesterol	72
Stroke	0
Ischemic Heart Disease	27
Depression	15
Chronic Kidney Disease	37
Asthma	0
Osteoperosis	7
Atrial Fibrilation	13
Heart Failure	18
Chronic Obstructive Pulmonary Disease	10
Diabetes	24
Dementia	12
Cancer	0

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

Volume of procedures performed by Dr. John J. Messmer, MD for Medicare patients.

doctor visit	226

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. John J. Messmer, MD.

**Gender**
Male	78
Female	80

**Age**
From 65 to 74	50
From 75 to 84	59
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. John J. Messmer, MD in 2021

Hypertension	70
High Cholesterol	75
Stroke	7
Ischemic Heart Disease	29
Depression	15
Chronic Kidney Disease	37
Asthma	0
Osteoperosis	13
Atrial Fibrilation	15
Heart Failure	18
Chronic Obstructive Pulmonary Disease	8
Diabetes	28
Dementia	8
Cancer	9

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

Volume of procedures performed by Dr. John J. Messmer, MD for Medicare patients.

doctor visit	198

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. John J. Messmer, MD.

**Gender**
Male	74
Female	79

**Age**
From 65 to 74	57
From 75 to 84	49
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. John J. Messmer, MD in 2022

Hypertension	75
High Cholesterol	75
Stroke	8
Ischemic Heart Disease	26
Depression	14
Chronic Kidney Disease	18
Asthma	0
Osteoperosis	12
Atrial Fibrilation	18
Heart Failure	14
Chronic Obstructive Pulmonary Disease	7
Diabetes	27
Dementia	0
Cancer	13

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

Volume of procedures performed by Dr. John J. Messmer, MD for Medicare patients.

doctor visit	288

2023 Medicare Patient Data

Information about Medicare patients treated by Dr. John J. Messmer, MD.

**Gender**
Male	88
Female	82

**Ethnicity**
Non-Hispanic White	158
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	67
From 75 to 84	63
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. John J. Messmer, MD in 2023

Hypertension	75
High Cholesterol	75
Stroke	6
Ischemic Heart Disease	23
Depression	12
Chronic Kidney Disease	21
Asthma	0
Osteoperosis	15
Atrial Fibrilation	19
Heart Failure	14
Chronic Obstructive Pulmonary Disease	0
Diabetes	33
Dementia	0
Cancer	10

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2023

Volume of procedures performed by Dr. John J. Messmer, MD for Medicare patients.

The highest averages for the top procedures that Dr. John J. Messmer, MD treated as a family medicine practitioner in Palmyra, PA were nursing home care, hospital care and inpatient care.

doctor visit	293
hospital care	12
inpatient care	12
nursing home care	97

Average Medicare Patient Data From 2012 - 2023

Information about Medicare patients treated by Dr. John J. Messmer, MD.

**Gender**
Male	84
Female	91

**Ethnicity**
Black / African American	0
Asian / Pacific Islander	0
Non-Hispanic White	28
Hispanic	0
Native American / Alaskan Native	0
Other	0

**Age**
75 to 84	62
85 and over	32
Less than 65	11
65 to 74	58

Average of Total of Conditions of Medicare patients treated by Dr. John J. Messmer, MD From 2012 - 2023

The highest averages of the most common conditions of Medicare patients that Dr. John J. Messmer, MD treated were high cholesterol, hypertension, chronic kidney disease and diabetes.

Hypertension	62
High Cholesterol	63
Stroke	1
Ischemic Heart Disease	25
Depression	15
Chronic Kidney Disease	26
Asthma	1
Osteoporosis	8
Heart Failure	15
Chronic Obstructive Pulmonary Disease	7
Diabetes	25
Atrial Fibrillation	11
Cancer	7
Dementia	9

Education & Training

Dr. John J. Messmer, MD graduated from Penn State College of Medicine in 1977. He completed residency at Naval Hospital Charleston. He has a state license in Pennsylvania.

Medical School: Penn State College of Medicine (1977)

Residency: Naval Hospital Charleston (1984)

Licensed In: Pennsylvania

Affiliations & Hospitals

Dr. John J. Messmer, MD is associated with these hospitals and organizations:

Penn State Health

Ratings & Reviews

Dr. John J. Messmer, MD has an exceptional overall rating with an average of 4.9 out of 5 stars based on 481 ratings. We collect ratings and reviews of Dr. John J. Messmer, MD from all over the web to help you find the right in Palmyra, PA.

4.9

Overall Rating

(481 Ratings)

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General Payments

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

**Payments by Company**
E.R. Squibb & Sons, L.L.C.	$522 ELIQUIS $522
Paratek Pharmaceuticals, Inc.	$427 NUZYRA $427
AstraZeneca Pharmaceuticals LP	$317 SYMBICORT $190	BYDUREON $105	BREZTRI $23
FOREST PHARMACEUTICALS, INC.	$264 DALIRESP $264
Merck Sharp & Dohme Corporation	$218 KEYTRUDA $191	NON-PRODUCT $14	NEXPLANON $13
Other	$1,402 XARELTO $142	t-slim insulin pump $107	Baxdela $105	MONJUVI $102	EVENITY $100	Other $846

**Types of Payments**
Food and Beverage	$2,963
Education	$188

Biography

Dr. John Messmer's areas of specialization are family medicine and geriatrics (elderly care); he sees patients in Palmyra, PA. The average patient rating for Dr. Messmer is 5.0 stars (out of 5). Dr. Messmer is a graduate of Penn State College of Medicine. He completed his residency training at Naval Hospital Charleston. Dr. Messmer is professionally affiliated with Penn State Health.