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Dr. John E. Lahaniatis, MD

Accepting New Patients
Specializes in: Radiation Oncology
MCP Hahnemann School of Medicine (1995)
100 Wellness Way
Milford, DE 19963

Dr. John E. Lahaniatis, MD is a radiation oncologist in Dover, DE specializing in radiation oncology. He graduated from MCP Hahnemann School of Medicine in 1995 and has 31 years of experience. Dr. John E. Lahaniatis, MD is affiliated with Bayhealth and BAYHEALTH MEDICAL CENTER, INC.

View Doctor's Full Profile (302) 430-5303

Office Locations

640 S. State Street 1st Floor
Dover, DE 19901
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Bayhealth

100 Wellness Way
Milford, DE 19963
(302) 430-5303
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Noteworthy Medicare Patient Procedures Performed by Dr. John E. Lahaniatis, MD in 2023

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

Top 5%

By Volume:

inpatient hospital care

In 2023, Dr. John E. Lahaniatis, MD performed more inpatient hospital care (for patient admitted to hospital) procedures for Medicare patients than 95% of providers in related specialties within Delaware.

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. John E. Lahaniatis, MD treated as a radiation oncologist in Dover, DE during 2012 were radiation therapy, hospital care and inpatient care.

Volume of procedures performed by Dr. John E. Lahaniatis, MD for Medicare patients.

doctor visit 1446
hospital care 34
inpatient care 34
radiation therapy 121

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. John E. Lahaniatis, MD treated as a radiation oncologist in Dover, DE during 2013 were radiation therapy, hospital care and inpatient care.

Volume of procedures performed by Dr. John E. Lahaniatis, MD for Medicare patients.

doctor visit 1365
hospital care 20
inpatient care 20
radiation therapy 119

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. John E. Lahaniatis, MD.

Gender
Male 327
Female 252
Ethnicity
Non-Hispanic White 451
Black 107
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 275
From 75 to 84 205
85 and over 44
Less than 65 55

Conditions of Medicare patients treated by Dr. John E. Lahaniatis, MD in 2013

Hypertension 75
High Cholesterol 72
Stroke 7
Ischemic Heart Disease 34
Depression 12
Chronic Kidney Disease 24
Asthma 11
Osteoperosis 7
Atrial Fibrilation 11
Heart Failure 18
Chronic Obstructive Pulmonary Disease 27
Diabetes 41
Dementia 6
Cancer 75

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. John E. Lahaniatis, MD treated as a radiation oncologist in Dover, DE during 2014 were radiation therapy, hospital care and inpatient care.

Volume of procedures performed by Dr. John E. Lahaniatis, MD for Medicare patients.

doctor visit 1255
hospital care 19
inpatient care 19
radiation therapy 112

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. John E. Lahaniatis, MD.

Gender
Male 292
Female 253
Ethnicity
Non-Hispanic White 428
Black 101
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 267
From 75 to 84 190
85 and over 45
Less than 65 43

Conditions of Medicare patients treated by Dr. John E. Lahaniatis, MD in 2014

Hypertension 75
High Cholesterol 75
Stroke 6
Ischemic Heart Disease 37
Depression 15
Chronic Kidney Disease 25
Asthma 8
Osteoperosis 7
Atrial Fibrilation 14
Heart Failure 18
Chronic Obstructive Pulmonary Disease 25
Diabetes 41
Dementia 6
Cancer 75

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. John E. Lahaniatis, MD treated as a radiation oncologist in Dover, DE during 2015 were radiation therapy, hospital care and inpatient care.

Volume of procedures performed by Dr. John E. Lahaniatis, MD for Medicare patients.

doctor visit 1358
hospital care 39
inpatient care 39
radiation therapy 143

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. John E. Lahaniatis, MD.

Gender
Male 562
Female 472
Ethnicity
Non-Hispanic White 794
Black 208
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 490
From 75 to 84 354
85 and over 98
Less than 65 92

Conditions of Medicare patients treated by Dr. John E. Lahaniatis, MD in 2015

Hypertension 75
High Cholesterol 71
Stroke 8
Ischemic Heart Disease 32
Depression 10
Chronic Kidney Disease 29
Asthma 17
Osteoperosis 7
Atrial Fibrilation 13
Heart Failure 14
Chronic Obstructive Pulmonary Disease 23
Diabetes 38
Dementia 7
Cancer 75

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. John E. Lahaniatis, MD treated as a radiation oncologist in Dover, DE during 2016 were radiation therapy, hospital care and inpatient care.

Volume of procedures performed by Dr. John E. Lahaniatis, MD for Medicare patients.

doctor visit 1381
hospital care 29
inpatient care 29
radiation therapy 136

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. John E. Lahaniatis, MD.

Gender
Male 259
Female 243
Ethnicity
Non-Hispanic White 393
Black 91
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 231
From 75 to 84 155
85 and over 56
Less than 65 60

Conditions of Medicare patients treated by Dr. John E. Lahaniatis, MD in 2016

Hypertension 75
High Cholesterol 70
Stroke 6
Ischemic Heart Disease 36
Depression 15
Chronic Kidney Disease 37
Asthma 27
Osteoperosis 7
Atrial Fibrilation 12
Heart Failure 14
Chronic Obstructive Pulmonary Disease 27
Diabetes 39
Dementia 9
Cancer 74

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. John E. Lahaniatis, MD treated as a radiation oncologist in Dover, DE during 2017 were radiation therapy, hospital care and inpatient care.

Volume of procedures performed by Dr. John E. Lahaniatis, MD for Medicare patients.

doctor visit 1431
hospital care 35
inpatient care 35
radiation therapy 133

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. John E. Lahaniatis, MD.

Gender
Male 260
Female 247
Ethnicity
Non-Hispanic White 403
Black 87
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 230
From 75 to 84 164
85 and over 51
Less than 65 62

Conditions of Medicare patients treated by Dr. John E. Lahaniatis, MD in 2017

Hypertension 75
High Cholesterol 67
Stroke 8
Ischemic Heart Disease 40
Depression 18
Chronic Kidney Disease 41
Asthma 7
Osteoperosis 8
Atrial Fibrilation 17
Heart Failure 17
Chronic Obstructive Pulmonary Disease 29
Diabetes 36
Dementia 10
Cancer 73

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. John E. Lahaniatis, MD treated as a radiation oncologist in Dover, DE during 2018 were radiation therapy, hospital care and inpatient care.

Volume of procedures performed by Dr. John E. Lahaniatis, MD for Medicare patients.

doctor visit 1263
hospital care 33
inpatient care 33
radiation therapy 108

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. John E. Lahaniatis, MD.

Gender
Male 241
Female 239
Ethnicity
Non-Hispanic White 365
Black 99
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 213
From 75 to 84 173
85 and over 46
Less than 65 48

Conditions of Medicare patients treated by Dr. John E. Lahaniatis, MD in 2018

Hypertension 75
High Cholesterol 69
Stroke 7
Ischemic Heart Disease 34
Depression 19
Chronic Kidney Disease 41
Asthma 5
Osteoperosis 9
Atrial Fibrilation 13
Heart Failure 16
Chronic Obstructive Pulmonary Disease 25
Diabetes 36
Dementia 10
Cancer 72

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. John E. Lahaniatis, MD treated as a radiation oncologist in Dover, DE during 2019 were radiation therapy, hospital care and inpatient care.

Volume of procedures performed by Dr. John E. Lahaniatis, MD for Medicare patients.

doctor visit 1239
hospital care 43
inpatient care 43
radiation therapy 88

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. John E. Lahaniatis, MD.

Gender
Male 264
Female 226
Ethnicity
Non-Hispanic White 385
Black 83
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 228
From 75 to 84 171
85 and over 55
Less than 65 36

Conditions of Medicare patients treated by Dr. John E. Lahaniatis, MD in 2019

Hypertension 75
High Cholesterol 74
Stroke 6
Ischemic Heart Disease 37
Depression 16
Chronic Kidney Disease 42
Asthma 7
Osteoperosis 10
Atrial Fibrilation 13
Heart Failure 16
Chronic Obstructive Pulmonary Disease 26
Diabetes 39
Dementia 9
Cancer 74

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. John E. Lahaniatis, MD treated as a radiation oncologist in Dover, DE during 2020 were radiation therapy.

Volume of procedures performed by Dr. John E. Lahaniatis, MD for Medicare patients.

doctor visit 655
radiation therapy 31

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. John E. Lahaniatis, MD.

Gender
Male 228
Female 206
Ethnicity
Non-Hispanic White 343
Black 69
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 228
From 75 to 84 140
85 and over 40
Less than 65 26

Conditions of Medicare patients treated by Dr. John E. Lahaniatis, MD in 2020

Hypertension 75
High Cholesterol 72
Stroke 7
Ischemic Heart Disease 40
Depression 19
Chronic Kidney Disease 42
Asthma 6
Osteoperosis 11
Atrial Fibrilation 12
Heart Failure 11
Chronic Obstructive Pulmonary Disease 25
Diabetes 35
Dementia 6
Cancer 75

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. John E. Lahaniatis, MD treated as a radiation oncologist in Dover, DE during 2021 were radiation therapy, hospital care and inpatient care.

Volume of procedures performed by Dr. John E. Lahaniatis, MD for Medicare patients.

doctor visit 837
hospital care 21
inpatient care 21
radiation therapy 37

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. John E. Lahaniatis, MD.

Gender
Male 278
Female 229
Ethnicity
Non-Hispanic White 393
Black 89
Hispanic 11
Asian 0
Other 0
Native American 0
Age
From 65 to 74 242
From 75 to 84 187
85 and over 44
Less than 65 34

Conditions of Medicare patients treated by Dr. John E. Lahaniatis, MD in 2021

Hypertension 75
High Cholesterol 75
Stroke 8
Ischemic Heart Disease 45
Depression 19
Chronic Kidney Disease 44
Asthma 6
Osteoperosis 12
Atrial Fibrilation 12
Heart Failure 14
Chronic Obstructive Pulmonary Disease 24
Diabetes 37
Dementia 7
Cancer 75

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. John E. Lahaniatis, MD treated as a radiation oncologist in Dover, DE during 2022 were radiation therapy, hospital care and inpatient care.

Volume of procedures performed by Dr. John E. Lahaniatis, MD for Medicare patients.

doctor visit 639
hospital care 16
inpatient care 16
radiation therapy 29

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. John E. Lahaniatis, MD.

Gender
Male 265
Female 190
Ethnicity
Non-Hispanic White 369
Black 70
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 205
From 75 to 84 185
85 and over 46
Less than 65 19

Conditions of Medicare patients treated by Dr. John E. Lahaniatis, MD in 2022

Hypertension 75
High Cholesterol 75
Stroke 7
Ischemic Heart Disease 38
Depression 18
Chronic Kidney Disease 32
Asthma 9
Osteoperosis 12
Atrial Fibrilation 19
Heart Failure 14
Chronic Obstructive Pulmonary Disease 28
Diabetes 38
Dementia 5
Cancer 75

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. John E. Lahaniatis, MD for Medicare patients.

The highest averages for the top procedures that Dr. John E. Lahaniatis, MD treated as a radiation oncologist in Dover, DE were radiation therapy, hospital care and inpatient care.

doctor visit 1169
hospital care 28
inpatient care 28
radiation therapy 96

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. John E. Lahaniatis, MD.

Gender
Male 270
Female 232
Ethnicity
Black / African American 91
Asian / Pacific Islander 0
Non-Hispanic White 393
Hispanic 1
Native American / Alaskan Native 0
Other 0
Age
75 to 84 174
85 and over 47
Less than 65 43
65 to 74 237

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

The highest averages of the most common conditions of Medicare patients that Dr. John E. Lahaniatis, MD treated were hypertension, cancer, high cholesterol and diabetes.

Hypertension 68
High Cholesterol 65
Stroke 6
Ischemic Heart Disease 33
Depression 14
Chronic Kidney Disease 32
Asthma 9
Osteoporosis 8
Heart Failure 13
Chronic Obstructive Pulmonary Disease 23
Diabetes 34
Atrial Fibrillation 12
Cancer 67
Dementia 6

Education & Training

Dr. John E. Lahaniatis, MD graduated from MCP Hahnemann School of Medicine in 1995. He completed residency at MCP Hahnemann School of Medicine, Allegheny University Affiliated Hospitals. He is certified by the American Board of Radiology/Radiation Oncology and has a state license in Delaware.

Medical School: MCP Hahnemann School of Medicine (1995)

Residency: MCP Hahnemann School of Medicine, Allegheny University Affiliated Hospitals

Board Certification: American Board of Radiology/Radiation Oncology

Licensed In: Delaware

Affiliations & Hospitals

Dr. John E. Lahaniatis, MD is associated with these hospitals and organizations:

Bayhealth
BAYHEALTH MEDICAL CENTER, INC

Ratings & Reviews

Dr. John E. Lahaniatis, MD has an exceptional overall rating with an average of 4.91 out of 5 stars based on 186 ratings. We collect ratings and reviews of Dr. John E. Lahaniatis, MD from all over the web to help you find the right in Dover, DE. 

4.91
Overall Rating
Leave a Review
Reviews From Around The Web
Overall Rating: 4.0 2024-07-22
Patient verified via Press Ganey
I always feel at ease talking to to my provider.
Overall Rating: 5.0 2025-07-16
Patient verified via Press Ganey
Love Dr. John - he's the best.
Overall Rating: 5.0 2025-06-26
Patient verified via Press Ganey
Awesome experience
Overall Rating: 5.0 2025-05-02
Patient verified via Press Ganey
Dr John is great

General Payments

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

Payments by Company
Bayer HealthCare Pharmaceuticals Inc. $83 Xofigo
$83
HOLOGIC INC $77 Myosure
$77
Siemens Medical Solutions USA, Inc. $42 ARIA Radiation Therapy Management Software
$42
Novocure Inc. $33 Oncology
$33
Accuray Incorporated $20 TomoTherapy System
$20
Other $13 PLUVICTO
$13
Types of Payments
Food and Beverage $268

Biography

Dr. John Lahaniatis practices radiation oncology. Dr. Lahaniatis is rated 5.0 stars (out of 5) by his patients. He is a graduate of MCP Hahnemann School of Medicine. His residency was performed at Hahnemann University Hospital and a hospital affiliated with MCP Hahnemann School of Medicine, Allegheny University. He is professionally affiliated with Bayhealth. Doctor.com reports that Dr. Lahaniatis is accepting new patients at his office in Dover, DE.

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