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Dr. Peter S. Liao, PhD, MD

Accepting New Patients

(83 Ratings)

Specializes in: General Surgery

Thomas Jefferson University, Jefferson Medical College

Professional interests include: spider veins, venous insufficiency, varicose veins, and more.

9110 Philadelphia Road Suite 306
Rosedale, MD 21237

(443) 219-0624

Dr. Peter S. Liao, PhD, MD is a general surgeon in Rosedale, MD specializing in general surgery. He graduated from Thomas Jefferson University, Jefferson Medical College. Dr. Peter S. Liao, PhD, MD is affiliated with Center for Vein Restoration.

Office Locations

9110 Philadelphia Road Suite 306
Rosedale, MD 21237

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1205 York Road Suite 34
Lutherville, MD 21093

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Some issues Dr. Peter S. Liao, PhD, MD can help you with:

Weight Loss Surgery (Bariatric Surgery)

Bariatric or weight-loss surgery is a surgical procedure performed to help significantly obese patients lose weight when more traditional methods, such as dieting and exercise, have not helped. Depending on the type, these surgeries change the gastrointestinal tract to limit how much food can be eaten and also change how food is absorbed by the body. Of the various bariatric surgeries available, the most common is gastric bypass.

By far the most common of the gastric bypass surgeries is called Roux-en-Y. During this surgery, part of the stomach and small intestine are detached from the gastrointestinal tract, in order to make the tract smaller. The surgeon divides the stomach into two parts. The working stomach, at the end of the esophagus, is now tiny - only the size of a walnut. This makes patients feel full after eating a small amount of food. Then the small intestine is also divided, and after bypassing a section of the small intestine to reduce food absorption, the intestine is attached to the small stomach pouch. The patient now has a working stomach and intestine like before, only much smaller.

Because gastric bypass is used to treat extreme obesity, it can reduce the risk of some of the problems associated with obesity. Gastric bypass can help treat or reduce the risk for such conditions as heart disease, high blood pressure, sleep apnea, and type 2 diabetes. However, it is a major surgery and also carries risks itself. Any surgery can lead to infection, bleeding, or blood clots, and weight loss surgery in particular carries risks of leaks in the gastrointestinal system, malnutrition, bowel obstructions, and vomiting.

Typically patients are considered candidates for gastric bypass surgery if they have a BMI greater than 40, or sometimes if they have a BMI between 35 and 40 but are suffering from obesity-related illnesses such as diabetes. The outlook is generally good, with most patients losing between 50-75% of their excess weight in 1-2 years. However, patients must follow strict diet guidelines so that the stomach can heal, starting with no food at all, then followed by a liquid diet for some time. For many severely obese patients who have tried strict diets before without success, gastric bypass surgery is the tool that allows them to finally achieve their weight loss and health goals.

Noteworthy Medicare Patient Procedures Performed by Dr. Peter S. Liao, PhD, MD in 2023

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

Top 5%

By Volume:

ablation

minimally invasive procedures

sclerotherapy for varicose veins

By Affordability:

sclerotherapy

sclerotherapy for varicose veins

vein sclerotherapy

In 2023, among providers in related specialties within Maryland, Dr. Peter S. Liao, PhD, MD performed more ablation, minimally invasive procedures, and sclerotherapy for varicose veins procedures for Medicare patients than 95% of them and he also had a list price for sclerotherapy, sclerotherapy for varicose veins, and vein sclerotherapy 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 25%

By Volume:

lower extremity venous duplex

vascular procedures

vascular ultrasound

In 2012, Dr. Peter S. Liao, PhD, MD performed more lower extremity venous duplex, vascular procedures, and vascular ultrasound procedures for Medicare patients than 75% of providers in related specialties within Maryland.

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. Peter S. Liao, PhD, MD treated as a general surgeon in Rosedale, MD during 2012 were minimally invasive procedures and gastrointestinal procedures.

Volume of procedures performed by Dr. Peter S. Liao, PhD, MD for Medicare patients.

doctor visit	202
gastrointestinal procedures	15
minimally invasive procedures	15

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Peter S. Liao, PhD, MD treated as a general surgeon in Rosedale, MD during 2013 were minimally invasive procedures and gastrointestinal procedures.

Volume of procedures performed by Dr. Peter S. Liao, PhD, MD for Medicare patients.

doctor visit	296
gastrointestinal procedures	18
minimally invasive procedures	18

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Peter S. Liao, PhD, MD.

**Gender**
Male	26
Female	109

**Ethnicity**
Non-Hispanic White	85
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	0
From 75 to 84	0
85 and over	0
Less than 65	71

Conditions of Medicare patients treated by Dr. Peter S. Liao, PhD, MD in 2013

Hypertension	75
High Cholesterol	61
Stroke	0
Ischemic Heart Disease	20
Depression	53
Chronic Kidney Disease	12
Asthma	19
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	9
Chronic Obstructive Pulmonary Disease	0
Diabetes	67
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

Volume of procedures performed by Dr. Peter S. Liao, PhD, MD for Medicare patients.

doctor visit	134

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Peter S. Liao, PhD, MD.

**Gender**
Male	17
Female	59

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

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

Conditions of Medicare patients treated by Dr. Peter S. Liao, PhD, MD in 2014

Hypertension	72
High Cholesterol	64
Stroke	0
Ischemic Heart Disease	24
Depression	45
Chronic Kidney Disease	0
Asthma	14
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	0
Chronic Obstructive Pulmonary Disease	0
Diabetes	71
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Peter S. Liao, PhD, MD treated as a general surgeon in Rosedale, MD during 2015 were vascular procedures, ultrasound (sonogram), minimally invasive procedures and ablation.

Volume of procedures performed by Dr. Peter S. Liao, PhD, MD for Medicare patients.

ablation	112
doctor visit	196
injections	23
minimally invasive procedures	201
ultrasound (sonogram)	232
vascular procedures	344

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Peter S. Liao, PhD, MD.

**Gender**
Male	36
Female	224

**Ethnicity**
Non-Hispanic White	218
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	176
From 75 to 84	48
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Peter S. Liao, PhD, MD in 2015

Hypertension	45
High Cholesterol	49
Stroke	0
Ischemic Heart Disease	9
Depression	17
Chronic Kidney Disease	0
Asthma	0
Osteoperosis	10
Atrial Fibrilation	0
Heart Failure	0
Chronic Obstructive Pulmonary Disease	0
Diabetes	21
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Peter S. Liao, PhD, MD treated as a general surgeon in Rosedale, MD during 2016 were vascular procedures, ultrasound (sonogram), minimally invasive procedures and ablation.

Volume of procedures performed by Dr. Peter S. Liao, PhD, MD for Medicare patients.

ablation	155
doctor visit	267
injections	45
minimally invasive procedures	265
ultrasound (sonogram)	323
vascular procedures	478

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Peter S. Liao, PhD, MD.

**Gender**
Male	28
Female	134

**Ethnicity**
Non-Hispanic White	141
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	105
From 75 to 84	41
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Peter S. Liao, PhD, MD in 2016

Hypertension	55
High Cholesterol	44
Stroke	0
Ischemic Heart Disease	18
Depression	13
Chronic Kidney Disease	14
Asthma	7
Osteoperosis	7
Atrial Fibrilation	0
Heart Failure	7
Chronic Obstructive Pulmonary Disease	0
Diabetes	17
Dementia	0
Cancer	8

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Peter S. Liao, PhD, MD treated as a general surgeon in Rosedale, MD during 2017 were vascular procedures, minimally invasive procedures, ultrasound (sonogram) and ablation.

Volume of procedures performed by Dr. Peter S. Liao, PhD, MD for Medicare patients.

ablation	162
doctor visit	190
injections	52
minimally invasive procedures	272
ultrasound (sonogram)	247
vascular procedures	409

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Peter S. Liao, PhD, MD.

**Gender**
Male	23
Female	89

**Ethnicity**
Non-Hispanic White	93
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

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

Conditions of Medicare patients treated by Dr. Peter S. Liao, PhD, MD in 2017

Hypertension	50
High Cholesterol	42
Stroke	0
Ischemic Heart Disease	20
Depression	20
Chronic Kidney Disease	14
Asthma	0
Osteoperosis	14
Atrial Fibrilation	12
Heart Failure	0
Chronic Obstructive Pulmonary Disease	0
Diabetes	16
Dementia	0
Cancer	11

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Peter S. Liao, PhD, MD treated as a general surgeon in Rosedale, MD during 2018 were vascular procedures, ultrasound (sonogram), minimally invasive procedures and ablation.

Volume of procedures performed by Dr. Peter S. Liao, PhD, MD for Medicare patients.

ablation	66
doctor visit	144
minimally invasive procedures	132
ultrasound (sonogram)	168
vascular procedures	234

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Peter S. Liao, PhD, MD.

**Gender**
Male	14
Female	50

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

Conditions of Medicare patients treated by Dr. Peter S. Liao, PhD, MD in 2018

Hypertension	47
High Cholesterol	50
Stroke	0
Ischemic Heart Disease	23
Depression	20
Chronic Kidney Disease	0
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	0
Chronic Obstructive Pulmonary Disease	0
Diabetes	19
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Peter S. Liao, PhD, MD treated as a general surgeon in Rosedale, MD during 2019 were vascular procedures, ultrasound (sonogram), minimally invasive procedures and ablation.

Volume of procedures performed by Dr. Peter S. Liao, PhD, MD for Medicare patients.

ablation	66
doctor visit	127
injections	23
minimally invasive procedures	109
ultrasound (sonogram)	157
vascular procedures	223

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Peter S. Liao, PhD, MD.

**Gender**
Male	16
Female	59

**Ethnicity**
Non-Hispanic White	63
Black	0
Hispanic	0
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	0

Conditions of Medicare patients treated by Dr. Peter S. Liao, PhD, MD in 2019

Hypertension	61
High Cholesterol	52
Stroke	0
Ischemic Heart Disease	21
Depression	23
Chronic Kidney Disease	21
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	0
Chronic Obstructive Pulmonary Disease	0
Diabetes	29
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Peter S. Liao, PhD, MD treated as a general surgeon in Rosedale, MD during 2020 were minimally invasive procedures, vascular procedures, ablation and injections.

Volume of procedures performed by Dr. Peter S. Liao, PhD, MD for Medicare patients.

ablation	89
doctor visit	183
injections	47
minimally invasive procedures	131
ultrasound (sonogram)	11
vascular procedures	100

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Peter S. Liao, PhD, MD.

**Gender**
Male	47
Female	136

**Ethnicity**
Non-Hispanic White	124
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	102
From 75 to 84	43
85 and over	13
Less than 65	25

Conditions of Medicare patients treated by Dr. Peter S. Liao, PhD, MD in 2020

Hypertension	69
High Cholesterol	53
Stroke	0
Ischemic Heart Disease	31
Depression	19
Chronic Kidney Disease	30
Asthma	8
Osteoperosis	9
Atrial Fibrilation	11
Heart Failure	13
Chronic Obstructive Pulmonary Disease	15
Diabetes	37
Dementia	0
Cancer	11

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Peter S. Liao, PhD, MD treated as a general surgeon in Rosedale, MD during 2021 were minimally invasive procedures, ablation, vascular procedures and injections.

Volume of procedures performed by Dr. Peter S. Liao, PhD, MD for Medicare patients.

ablation	156
doctor visit	327
injections	83
minimally invasive procedures	229
vascular procedures	156

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Peter S. Liao, PhD, MD.

**Gender**
Male	59
Female	186

**Ethnicity**
Non-Hispanic White	166
Black	67
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	124
From 75 to 84	65
85 and over	16
Less than 65	40

Conditions of Medicare patients treated by Dr. Peter S. Liao, PhD, MD in 2021

Hypertension	73
High Cholesterol	64
Stroke	0
Ischemic Heart Disease	26
Depression	23
Chronic Kidney Disease	27
Asthma	10
Osteoperosis	11
Atrial Fibrilation	7
Heart Failure	13
Chronic Obstructive Pulmonary Disease	13
Diabetes	33
Dementia	7
Cancer	11

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Peter S. Liao, PhD, MD treated as a general surgeon in Rosedale, MD during 2022 were vascular procedures, ultrasound (sonogram), minimally invasive procedures and ablation.

Volume of procedures performed by Dr. Peter S. Liao, PhD, MD for Medicare patients.

ablation	124
doctor visit	287
injections	68
minimally invasive procedures	180
ultrasound (sonogram)	371
vascular procedures	495

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Peter S. Liao, PhD, MD.

**Gender**
Male	69
Female	219

**Ethnicity**
Non-Hispanic White	205
Black	63
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	143
From 75 to 84	91
85 and over	16
Less than 65	38

Conditions of Medicare patients treated by Dr. Peter S. Liao, PhD, MD in 2022

Hypertension	75
High Cholesterol	74
Stroke	5
Ischemic Heart Disease	17
Depression	21
Chronic Kidney Disease	19
Asthma	11
Osteoperosis	16
Atrial Fibrilation	12
Heart Failure	8
Chronic Obstructive Pulmonary Disease	9
Diabetes	34
Dementia	4
Cancer	14

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. Peter S. Liao, PhD, MD for Medicare patients.

The highest averages for the top procedures that Dr. Peter S. Liao, PhD, MD treated as a general surgeon in Rosedale, MD were vascular procedures, ultrasound (sonogram), minimally invasive procedures and ablation.

ablation	116
doctor visit	213
gastrointestinal procedures	16
injections	48
minimally invasive procedures	155
ultrasound (sonogram)	215
vascular procedures	304

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. Peter S. Liao, PhD, MD.

**Gender**
Male	30
Female	115

**Ethnicity**
Black / African American	11
Asian / Pacific Islander	0
Non-Hispanic White	103
Native American / Alaskan Native	0
Hispanic	0
Other	0

**Age**
75 to 84	26
85 and over	4
Less than 65	19
65 to 74	74

Average of Total of Conditions of Medicare patients treated by Dr. Peter S. Liao, PhD, MD From 2012 - 2022

The highest averages of the most common conditions of Medicare patients that Dr. Peter S. Liao, PhD, MD treated were hypertension, high cholesterol, diabetes and depression.

Hypertension	56
High Cholesterol	50
Stroke	0
Ischemic Heart Disease	19
Depression	23
Chronic Kidney Disease	12
Asthma	6
Osteoporosis	6
Heart Failure	4
Chronic Obstructive Pulmonary Disease	3
Diabetes	31
Atrial Fibrillation	3
Dementia	1
Cancer	5

Education & Training

Dr. Peter S. Liao, PhD, MD graduated from Thomas Jefferson University, Jefferson Medical College. He completed residency at University of Maryland Medical Center. He is certified by the American Board of Surgery and has a state license in Maryland.

Medical School: Thomas Jefferson University, Jefferson Medical College

Residency: University of Maryland Medical Center

Board Certification: American Board of Surgery

Licensed In: Maryland

Affiliations & Hospitals

Dr. Peter S. Liao, PhD, MD is associated with these hospitals and organizations:

Center for Vein Restoration

Ratings & Reviews

Dr. Peter S. Liao, PhD, MD has an exceptional overall rating with an average of 4.98 out of 5 stars based on 83 ratings. We collect ratings and reviews of Dr. Peter S. Liao, PhD, MD from all over the web to help you find the right in Rosedale, MD.

4.98

Overall Rating

(83 Ratings)

Leave a Review

General Payments

These charts describe general payments received by Dr. Peter S. Liao, PhD, MD. Doctors may receive payments for a number of reasons, including meal compensation, travel compensation, and consulting.

**Payments by Company**
Medtronic Vascular, Inc.	$959 VenaSeal $875	ClosureFast $84
W. L. Gore & Associates, Inc.	$151 BIO A Tissue Reinforcement $137	SEAMGUARD Bioabsorbable Staple $14
Covidien Sales LLC	$129 Endo Stapling $123	Vessel Sealing $6
Boston Scientific Corporation	$125 VARITHENA $108	GENERAL - VASCULAR ACCESS $17
Tactile Systems Technology Inc	$113 ENTRE $93	ENTRE PLUS $20
Other	$339 VenaSeal $80	NASCOBAL CYANOCOBALAMIN, USP $61	BioSurgery - PERI-STRIPS $35	Energy Enseal $31	Puraply Antimicrobial $30	Other $102

**Types of Payments**
Food and Beverage	$1,403
Travel and Lodging	$414

Biography

Dr. Peter Liao sees patients in Columbia, MD, Rosedale, MD, and Lutherville, MD. His medical specialty is general surgery. His average rating from his patients is 5.0 stars (out of 5). These areas are among Dr. Liao's clinical interests: spider veins, varicose veins, and minimally invasive procedures. He is professionally affiliated with Center for Vein Restoration. According to Doctor.com, new patients are welcome to contact his office in Rosedale, MD. He is a graduate of Thomas Jefferson University, Jefferson Medical College. Dr. Liao completed his residency training at the University of Maryland Medical Center. He has received the following distinction: 3rd Annual Laparoscopic Skills Invitational Competition, 3rd Place Overall.