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Home > MD Providers > Sports Medicine Doctors

Dr. John T. Antoniades, MD

(981 Ratings)

Specializes in: Sports Medicine and Adult Orthopedic Reconstructive Surgery

University of Maryland School of Medicine

3449 Wilkens Avenue Suite 305
Baltimore, MD 21229

(410) 368-9992

Dr. John T. Antoniades, MD is a sports medicine doctor in Baltimore, MD specializing in sports medicine and adult orthopedic reconstructive surgery. He graduated from University of Maryland School of Medicine. Dr. John T. Antoniades, MD is affiliated with Ascension.

Office Locations

Ascension

3449 Wilkens Avenue Suite 305
Baltimore, MD 21229

(410) 368-9992

(410) 368-9997

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Noteworthy Medicare Patient Procedures Performed by Dr. John T. Antoniades, MD in 2024

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

Top 5%

By Volume:

arthroscopic knee synovectomy

joint synovectomy

knee arthroscopy

major joint aspiration

major joint injection

By Affordability:

knee arthroscopy

minimally invasive knee surgery

In 2024, among providers in related specialties within Maryland, Dr. John T. Antoniades, MD performed more arthroscopic knee synovectomy, joint synovectomy (joint lining removal), knee arthroscopy, major joint aspiration, and major joint injection procedures for Medicare patients than 95% of them and he also had a list price for knee arthroscopy, and minimally invasive knee surgery 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 Affordability:

lower extremity reconstruction

total joint replacement

total knee replacement

In 2024, Dr. John T. Antoniades, MD had a list price for knee arthroplasty, knee reconstruction, knee replacement, knee surgery, lower extremity reconstruction, total joint replacement, and total knee replacement that was lower than the list prices billed to Medicare by 90% of providers in related specialties within Maryland. 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:

lower extremity surgery

By Affordability:

arthroplasty

arthroscopic meniscectomy

arthroscopic meniscus surgery

joint reconstruction

joint surgery

lower extremity surgery

meniscectomy

meniscus surgery

reconstructive surgery

replacement arthroplasty

total hip replacement

In 2012, among providers in related specialties within Maryland, Dr. John T. Antoniades, MD performed more lower extremity surgery procedures for Medicare patients than 75% of them and he also had a list price for arthroplasty, arthroscopic meniscectomy, arthroscopic meniscus surgery, joint reconstruction, joint surgery, lower extremity surgery, meniscectomy (meniscus removal), meniscus surgery, reconstructive surgery, replacement arthroplasty (joint replacement), and total hip replacement 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. Antoniades, MD treated as a sports medicine doctor in Baltimore, MD during 2012 were aspiration, injections, hospital care and inpatient care.

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

aspiration	68
doctor visit	1123
fracture surgery	16
hospital care	65
injections	68
inpatient care	65
joint surgery	20
lower extremity surgery	36
reconstructive surgery	20

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. John T. Antoniades, MD treated as a sports medicine doctor in Baltimore, MD during 2013 were hospital care, inpatient care, joint surgery and lower extremity surgery.

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

aspiration	24
doctor visit	1097
hospital care	78
injections	24
inpatient care	78
joint surgery	38
lower extremity surgery	38
minimally invasive procedures	11
reconstructive surgery	27

2013 Medicare Patient Data

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

**Gender**
Male	179
Female	399

**Ethnicity**
Non-Hispanic White	398
Black	161
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	212
From 75 to 84	173
85 and over	96
Less than 65	97

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

Hypertension	75
High Cholesterol	68
Stroke	7
Ischemic Heart Disease	40
Depression	23
Chronic Kidney Disease	25
Asthma	8
Osteoperosis	10
Atrial Fibrilation	13
Heart Failure	23
Chronic Obstructive Pulmonary Disease	14
Diabetes	36
Dementia	13
Cancer	10

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. John T. Antoniades, MD treated as a sports medicine doctor in Baltimore, MD during 2014 were aspiration, injections, lower extremity surgery and hospital care.

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

aspiration	509
doctor visit	976
fracture surgery	16
hospital care	67
injections	509
inpatient care	67
joint surgery	65
lower extremity surgery	81
minimally invasive procedures	32
reconstructive surgery	33
synovectomy	17

2014 Medicare Patient Data

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

**Gender**
Male	171
Female	386

**Ethnicity**
Non-Hispanic White	375
Black	169
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	205
From 75 to 84	164
85 and over	97
Less than 65	91

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

Hypertension	75
High Cholesterol	65
Stroke	5
Ischemic Heart Disease	36
Depression	26
Chronic Kidney Disease	28
Asthma	11
Osteoperosis	10
Atrial Fibrilation	13
Heart Failure	20
Chronic Obstructive Pulmonary Disease	19
Diabetes	34
Dementia	14
Cancer	12

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. John T. Antoniades, MD treated as a sports medicine doctor in Baltimore, MD during 2015 were aspiration, injections, hospital care and inpatient care.

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

aspiration	739
closed (non-surgical) treatment of fracture	25
doctor visit	1376
emergency care	17
fracture surgery	20
hospital care	64
injections	739
inpatient care	64
joint surgery	28
lower extremity surgery	48
reconstructive surgery	28

2015 Medicare Patient Data

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

**Gender**
Male	424
Female	852

**Ethnicity**
Non-Hispanic White	848
Black	400
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	492
From 75 to 84	366
85 and over	218
Less than 65	200

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

Hypertension	75
High Cholesterol	69
Stroke	6
Ischemic Heart Disease	36
Depression	25
Chronic Kidney Disease	34
Asthma	15
Osteoperosis	12
Atrial Fibrilation	13
Heart Failure	18
Chronic Obstructive Pulmonary Disease	18
Diabetes	35
Dementia	11
Cancer	12

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. John T. Antoniades, MD treated as a sports medicine doctor in Baltimore, MD during 2016 were aspiration, injections, hospital care and inpatient care.

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

aspiration	830
doctor visit	1484
fracture surgery	14
hospital care	50
injections	830
inpatient care	50
joint surgery	17
lower extremity surgery	31
reconstructive surgery	17

2016 Medicare Patient Data

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

**Gender**
Male	203
Female	423

**Ethnicity**
Non-Hispanic White	389
Black	209
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	240
From 75 to 84	169
85 and over	106
Less than 65	111

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

Hypertension	75
High Cholesterol	71
Stroke	4
Ischemic Heart Disease	35
Depression	22
Chronic Kidney Disease	31
Asthma	20
Osteoperosis	9
Atrial Fibrilation	13
Heart Failure	17
Chronic Obstructive Pulmonary Disease	15
Diabetes	35
Dementia	11
Cancer	11

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. John T. Antoniades, MD treated as a sports medicine doctor in Baltimore, MD during 2017 were aspiration, injections, joint surgery and lower extremity surgery.

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

aspiration	692
doctor visit	1422
injections	692
joint surgery	46
lower extremity surgery	46
minimally invasive procedures	35
reconstructive surgery	11
synovectomy	18

2017 Medicare Patient Data

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

**Gender**
Male	202
Female	372

**Ethnicity**
Non-Hispanic White	368
Black	181
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	233
From 75 to 84	160
85 and over	82
Less than 65	99

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

Hypertension	75
High Cholesterol	66
Stroke	6
Ischemic Heart Disease	36
Depression	27
Chronic Kidney Disease	35
Asthma	9
Osteoperosis	8
Atrial Fibrilation	10
Heart Failure	17
Chronic Obstructive Pulmonary Disease	16
Diabetes	38
Dementia	11
Cancer	11

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. John T. Antoniades, MD treated as a sports medicine doctor in Baltimore, MD during 2018 were aspiration, injections, joint surgery and lower extremity surgery.

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

aspiration	672
doctor visit	1250
injections	672
joint surgery	47
lower extremity surgery	47
minimally invasive procedures	35
reconstructive surgery	12
synovectomy	20

2018 Medicare Patient Data

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

**Gender**
Male	158
Female	368

**Ethnicity**
Non-Hispanic White	343
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	205
From 75 to 84	156
85 and over	75
Less than 65	90

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

Hypertension	75
High Cholesterol	69
Stroke	5
Ischemic Heart Disease	35
Depression	28
Chronic Kidney Disease	33
Asthma	0
Osteoperosis	7
Atrial Fibrilation	11
Heart Failure	17
Chronic Obstructive Pulmonary Disease	15
Diabetes	33
Dementia	10
Cancer	14

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. John T. Antoniades, MD treated as a sports medicine doctor in Baltimore, MD during 2019 were aspiration, injections, joint surgery and lower extremity surgery.

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

aspiration	685
doctor visit	1355
injections	685
joint surgery	55
lower extremity surgery	55
minimally invasive procedures	36
reconstructive surgery	19
synovectomy	19

2019 Medicare Patient Data

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

**Gender**
Male	158
Female	380

**Ethnicity**
Non-Hispanic White	316
Black	206
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	221
From 75 to 84	163
85 and over	62
Less than 65	92

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

Hypertension	75
High Cholesterol	74
Stroke	3
Ischemic Heart Disease	33
Depression	28
Chronic Kidney Disease	37
Asthma	10
Osteoperosis	7
Atrial Fibrilation	10
Heart Failure	15
Chronic Obstructive Pulmonary Disease	14
Diabetes	37
Dementia	10
Cancer	13

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. John T. Antoniades, MD treated as a sports medicine doctor in Baltimore, MD during 2020 were aspiration, injections, reconstructive surgery and joint surgery.

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

aspiration	588
doctor visit	1152
injections	588
joint surgery	13
lower extremity surgery	13
reconstructive surgery	13

2020 Medicare Patient Data

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

**Gender**
Male	154
Female	347

**Ethnicity**
Non-Hispanic White	281
Black	199
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	228
From 75 to 84	138
85 and over	54
Less than 65	81

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

Hypertension	75
High Cholesterol	67
Stroke	5
Ischemic Heart Disease	25
Depression	25
Chronic Kidney Disease	33
Asthma	9
Osteoperosis	8
Atrial Fibrilation	7
Heart Failure	12
Chronic Obstructive Pulmonary Disease	11
Diabetes	31
Dementia	7
Cancer	12

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. John T. Antoniades, MD treated as a sports medicine doctor in Baltimore, MD during 2021 were aspiration, injections, joint surgery and lower extremity surgery.

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

aspiration	724
doctor visit	1498
injections	724
joint surgery	46
lower extremity surgery	46
minimally invasive procedures	18
reconstructive surgery	28
synovectomy	18

2021 Medicare Patient Data

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

**Gender**
Male	192
Female	420

**Ethnicity**
Non-Hispanic White	357
Black	230
Hispanic	0
Asian	0
Other	11
Native American	0

**Age**
From 65 to 74	284
From 75 to 84	177
85 and over	66
Less than 65	85

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

Hypertension	75
High Cholesterol	71
Stroke	5
Ischemic Heart Disease	30
Depression	25
Chronic Kidney Disease	32
Asthma	11
Osteoperosis	8
Atrial Fibrilation	8
Heart Failure	14
Chronic Obstructive Pulmonary Disease	13
Diabetes	36
Dementia	9
Cancer	12

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. John T. Antoniades, MD treated as a sports medicine doctor in Baltimore, MD during 2022 were aspiration, injections, joint surgery and lower extremity surgery.

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

aspiration	842
doctor visit	1664
injections	842
joint surgery	37
lower extremity surgery	37
minimally invasive procedures	24
reconstructive surgery	13
synovectomy	11

2022 Medicare Patient Data

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

**Gender**
Male	202
Female	478

**Ethnicity**
Non-Hispanic White	375
Black	259
Hispanic	12
Asian	16
Other	18
Native American	0

**Age**
From 65 to 74	305
From 75 to 84	207
85 and over	84
Less than 65	84

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

Hypertension	75
High Cholesterol	75
Stroke	8
Ischemic Heart Disease	24
Depression	23
Chronic Kidney Disease	23
Asthma	16
Osteoperosis	11
Atrial Fibrilation	13
Heart Failure	13
Chronic Obstructive Pulmonary Disease	14
Diabetes	36
Dementia	6
Cancer	13

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

The top procedures that Dr. John T. Antoniades, MD treated as a sports medicine doctor in Baltimore, MD during 2023 were aspiration, injections, joint surgery and lower extremity surgery.

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

aspiration	805
doctor visit	1615
injections	805
joint surgery	47
lower extremity surgery	47
minimally invasive procedures	11
reconstructive surgery	36
synovectomy	11

2023 Medicare Patient Data

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

**Gender**
Male	187
Female	471

**Ethnicity**
Non-Hispanic White	382
Black	236
Hispanic	0
Asian	0
Other	21
Native American	0

**Age**
From 65 to 74	285
From 75 to 84	230
85 and over	83
Less than 65	60

Conditions of Medicare patients treated by Dr. John T. Antoniades, MD in 2023

Hypertension	75
High Cholesterol	75
Stroke	7
Ischemic Heart Disease	23
Depression	21
Chronic Kidney Disease	25
Asthma	12
Osteoperosis	11
Atrial Fibrilation	12
Heart Failure	13
Chronic Obstructive Pulmonary Disease	16
Diabetes	36
Dementia	5
Cancer	14

Medicare Procedure and Patient Information

2024 Medicare Procedure Volume

The top procedures that Dr. John T. Antoniades, MD treated as a sports medicine doctor in Baltimore, MD during 2024 were aspiration, injections, joint surgery and lower extremity surgery.

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

aspiration	626
doctor visit	1247
injections	626
joint surgery	63
lower extremity surgery	63
minimally invasive procedures	30
reconstructive surgery	33
synovectomy	16

2024 Medicare Patient Data

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

**Gender**
Male	164
Female	390

**Ethnicity**
Non-Hispanic White	319
Black	210
Hispanic	0
Asian	0
Other	11
Native American	0

**Age**
From 65 to 74	241
From 75 to 84	185
85 and over	82
Less than 65	46

Conditions of Medicare patients treated by Dr. John T. Antoniades, MD in 2024

Hypertension	75
High Cholesterol	75
Stroke	5
Ischemic Heart Disease	19
Depression	22
Chronic Kidney Disease	28
Asthma	14
Osteoperosis	12
Atrial Fibrilation	12
Heart Failure	12
Chronic Obstructive Pulmonary Disease	13
Diabetes	33
Dementia	5
Cancer	14

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2024

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

The highest averages for the top procedures that Dr. John T. Antoniades, MD treated as a sports medicine doctor in Baltimore, MD were aspiration, injections, hospital care and inpatient care.

aspiration	600
closed (non-surgical) treatment of fracture	25
doctor visit	1327
emergency care	17
fracture surgery	16
hospital care	64
injections	600
inpatient care	64
joint surgery	40
lower extremity surgery	45
minimally invasive procedures	25
reconstructive surgery	22
synovectomy	16

Average Medicare Patient Data From 2012 - 2024

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

**Gender**
Female	406
Male	184

**Ethnicity**
Black / African American	189
Asian / Pacific Islander	1
Non-Hispanic White	365
Native American / Alaskan Native	0
Hispanic	0
Other	4

**Age**
75 to 84	176
85 and over	85
Less than 65	87
65 to 74	242

Average of Total of Conditions of Medicare patients treated by Dr. John T. Antoniades, MD From 2012 - 2024

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

Hypertension	69
High Cholesterol	65
Stroke	5
Ischemic Heart Disease	28
Depression	22
Chronic Kidney Disease	28
Asthma	10
Osteoporosis	8
Heart Failure	14
Chronic Obstructive Pulmonary Disease	13
Diabetes	32
Atrial Fibrillation	10
Dementia	8
Cancer	11

Education & Training

Dr. John T. Antoniades, MD graduated from University of Maryland School of Medicine. He completed residency at University of Maryland Medical Center. He is certified by the Certifications: The American Board of Orthopaedic Surgery - Orthopaedic Surgery and has a state license in Maryland.

Medical School: University of Maryland School of Medicine

Residency: University of Maryland Medical Center

Board Certification: Certifications: The American Board of Orthopaedic Surgery - Orthopaedic Surgery

Licensed In: Maryland

Ratings & Reviews

Dr. John T. Antoniades, MD has an exceptional overall rating with an average of 4.9 out of 5 stars based on 981 ratings. We collect ratings and reviews of Dr. John T. Antoniades, MD from all over the web to help you find the right in Baltimore, MD.

4.9

Overall Rating

(981 Ratings)

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General Payments

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

**Payments by Company**
DePuy Synthes Sales Inc.	$224 Velys $110	ORTHOVISC $53	CORAIL $50	Early Intervention $11
Stryker Corporation	$204 CASCADIA Interbody System $122	ACCOLADE $28	TRIATHLON $27	KNEES $27
Exactech, Inc.	$52 Optetrak $52
Horizon Pharma plc	$49 Duexis $35	VIMOVO $14
Zimmer Biomet Holdings, Inc.	$40 ROSA-Knee $40
Other	$129 Durolane $35	SPECTRA WAVEWRITER (REFURBISHED) $27	PERIFIX Epidural Anesthesia Catheter, Needle, or Filter $26	JOURNAVX $17	REBOUND. CTi, UNLOADER, ASPEN, TITAN WRIST $13	Other $11

**Types of Payments**
Food and Beverage	$685
Education	$14

Biography

Dr. John Antoniades specializes in adult orthopedic reconstructive surgery and sports medicine. Patient ratings for Dr. Antoniades average 5.0 stars (out of 5). He is affiliated with Ascension. He attended the University of Maryland School of Medicine and then went on to complete his residency at the University of Maryland Medical Center. In addition to English, he speaks Greek.