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Dr. Ruth Y. Peng, MD

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Specializes in: Pathology

345 St. Paul Place 7th Floor, Pathology Department
Baltimore, MD 21202

(410) 332-9447

Dr. Ruth Y. Peng, MD is a pathologist in Baltimore, MD specializing in pathology. Dr. Ruth Y. Peng, MD is affiliated with Mercy Hospital.

Office Locations

345 St. Paul Place 7th Floor, Pathology Department
Baltimore, MD 21202

(410) 332-9447

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Noteworthy Medicare Patient Procedures Performed by Dr. Ruth Y. Peng, MD in 2024

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

Top 10%

By Affordability:

in situ hybridization

In 2024, Dr. Ruth Y. Peng, MD had a list price for in situ hybridization 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 Affordability:

genetic testing

molecular genetic testing

In 2012, Dr. Ruth Y. Peng, MD had a list price for genetic testing, and molecular genetic testing that was lower than the list prices billed to Medicare by 75% 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.

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. Ruth Y. Peng, MD treated as a pathologist in Baltimore, MD during 2012 were lab tests, cytology, consultation and second opinions.

Volume of procedures performed by Dr. Ruth Y. Peng, MD for Medicare patients.

consultation	50
cytology	163
lab tests	747
second opinions	12

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Ruth Y. Peng, MD treated as a pathologist in Baltimore, MD during 2013 were lab tests, cytology, consultation and second opinions.

Volume of procedures performed by Dr. Ruth Y. Peng, MD for Medicare patients.

consultation	67
cytology	133
lab tests	1016
second opinions	18

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Ruth Y. Peng, MD.

**Gender**
Male	320
Female	516

**Ethnicity**
Non-Hispanic White	580
Black	227
Hispanic	0
Asian	12
Other	0
Native American	0

**Age**
From 65 to 74	407
From 75 to 84	232
85 and over	68
Less than 65	129

Conditions of Medicare patients treated by Dr. Ruth Y. Peng, MD in 2013

Hypertension	75
High Cholesterol	64
Stroke	4
Ischemic Heart Disease	33
Depression	22
Chronic Kidney Disease	26
Asthma	12
Osteoperosis	9
Atrial Fibrilation	11
Heart Failure	16
Chronic Obstructive Pulmonary Disease	16
Diabetes	35
Dementia	5
Cancer	24

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Ruth Y. Peng, MD treated as a pathologist in Baltimore, MD during 2014 were lab tests, cytology, consultation and second opinions.

Volume of procedures performed by Dr. Ruth Y. Peng, MD for Medicare patients.

consultation	76
cytology	166
lab tests	824
second opinions	32

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Ruth Y. Peng, MD.

**Gender**
Male	367
Female	600

**Ethnicity**
Non-Hispanic White	665
Black	265
Hispanic	0
Asian	18
Other	0
Native American	0

**Age**
From 65 to 74	472
From 75 to 84	259
85 and over	71
Less than 65	165

Conditions of Medicare patients treated by Dr. Ruth Y. Peng, MD in 2014

Hypertension	75
High Cholesterol	64
Stroke	5
Ischemic Heart Disease	30
Depression	21
Chronic Kidney Disease	22
Asthma	11
Osteoperosis	7
Atrial Fibrilation	10
Heart Failure	13
Chronic Obstructive Pulmonary Disease	14
Diabetes	32
Dementia	5
Cancer	23

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Ruth Y. Peng, MD treated as a pathologist in Baltimore, MD during 2015 were lab tests, cytology, consultation and second opinions.

Volume of procedures performed by Dr. Ruth Y. Peng, MD for Medicare patients.

consultation	74
cytology	239
lab tests	662
second opinions	41

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Ruth Y. Peng, MD.

**Gender**
Male	902
Female	1408

**Ethnicity**
Non-Hispanic White	1560
Black	658
Hispanic	0
Asian	40
Other	0
Native American	0

**Age**
From 65 to 74	1200
From 75 to 84	588
85 and over	164
Less than 65	358

Conditions of Medicare patients treated by Dr. Ruth Y. Peng, MD in 2015

Hypertension	74
High Cholesterol	63
Stroke	4
Ischemic Heart Disease	32
Depression	24
Chronic Kidney Disease	23
Asthma	14
Osteoperosis	6
Atrial Fibrilation	10
Heart Failure	14
Chronic Obstructive Pulmonary Disease	14
Diabetes	34
Dementia	5
Cancer	22

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Ruth Y. Peng, MD treated as a pathologist in Baltimore, MD during 2016 were lab tests, cytology, consultation and second opinions.

Volume of procedures performed by Dr. Ruth Y. Peng, MD for Medicare patients.

consultation	99
cytology	260
lab tests	797
second opinions	46

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Ruth Y. Peng, MD.

**Gender**
Male	484
Female	721

**Ethnicity**
Non-Hispanic White	829
Black	316
Hispanic	0
Asian	24
Other	22
Native American	0

**Age**
From 65 to 74	618
From 75 to 84	326
85 and over	95
Less than 65	166

Conditions of Medicare patients treated by Dr. Ruth Y. Peng, MD in 2016

Hypertension	75
High Cholesterol	62
Stroke	5
Ischemic Heart Disease	29
Depression	25
Chronic Kidney Disease	28
Asthma	23
Osteoperosis	7
Atrial Fibrilation	10
Heart Failure	12
Chronic Obstructive Pulmonary Disease	19
Diabetes	32
Dementia	7
Cancer	24

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Ruth Y. Peng, MD treated as a pathologist in Baltimore, MD during 2017 were lab tests, cytology, consultation and second opinions.

Volume of procedures performed by Dr. Ruth Y. Peng, MD for Medicare patients.

consultation	87
cytology	237
lab tests	693
second opinions	48

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Ruth Y. Peng, MD.

**Gender**
Male	411
Female	691

**Ethnicity**
Non-Hispanic White	743
Black	304
Hispanic	0
Asian	27
Other	0
Native American	0

**Age**
From 65 to 74	598
From 75 to 84	279
85 and over	85
Less than 65	140

Conditions of Medicare patients treated by Dr. Ruth Y. Peng, MD in 2017

Hypertension	74
High Cholesterol	57
Stroke	4
Ischemic Heart Disease	30
Depression	23
Chronic Kidney Disease	28
Asthma	9
Osteoperosis	7
Atrial Fibrilation	12
Heart Failure	14
Chronic Obstructive Pulmonary Disease	15
Diabetes	33
Dementia	6
Cancer	25

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Ruth Y. Peng, MD treated as a pathologist in Baltimore, MD during 2018 were lab tests, cytology, consultation and second opinions.

Volume of procedures performed by Dr. Ruth Y. Peng, MD for Medicare patients.

consultation	66
cytology	223
lab tests	587
second opinions	25

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Ruth Y. Peng, MD.

**Gender**
Male	456
Female	694

**Ethnicity**
Non-Hispanic White	761
Black	334
Hispanic	0
Asian	20
Other	24
Native American	0

**Age**
From 65 to 74	573
From 75 to 84	329
85 and over	76
Less than 65	172

Conditions of Medicare patients treated by Dr. Ruth Y. Peng, MD in 2018

Hypertension	75
High Cholesterol	68
Stroke	4
Ischemic Heart Disease	32
Depression	25
Chronic Kidney Disease	30
Asthma	9
Osteoperosis	8
Atrial Fibrilation	10
Heart Failure	13
Chronic Obstructive Pulmonary Disease	15
Diabetes	30
Dementia	7
Cancer	26

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Ruth Y. Peng, MD treated as a pathologist in Baltimore, MD during 2019 were lab tests, cytology, consultation and second opinions.

Volume of procedures performed by Dr. Ruth Y. Peng, MD for Medicare patients.

consultation	85
cytology	197
lab tests	609
second opinions	38

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Ruth Y. Peng, MD.

**Gender**
Male	428
Female	722

**Ethnicity**
Non-Hispanic White	825
Black	276
Hispanic	0
Asian	0
Other	23
Native American	0

**Age**
From 65 to 74	0
From 75 to 84	343
85 and over	105
Less than 65	121

Conditions of Medicare patients treated by Dr. Ruth Y. Peng, MD in 2019

Hypertension	74
High Cholesterol	69
Stroke	4
Ischemic Heart Disease	33
Depression	25
Chronic Kidney Disease	30
Asthma	11
Osteoperosis	0
Atrial Fibrilation	9
Heart Failure	13
Chronic Obstructive Pulmonary Disease	16
Diabetes	33
Dementia	7
Cancer	27

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Ruth Y. Peng, MD treated as a pathologist in Baltimore, MD during 2020 were lab tests, cytology, consultation and second opinions.

Volume of procedures performed by Dr. Ruth Y. Peng, MD for Medicare patients.

consultation	92
cytology	155
lab tests	456
second opinions	21

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Ruth Y. Peng, MD.

**Gender**
Male	325
Female	554

**Ethnicity**
Non-Hispanic White	602
Black	240
Hispanic	0
Asian	0
Other	19
Native American	0

**Age**
From 65 to 74	427
From 75 to 84	281
85 and over	57
Less than 65	114

Conditions of Medicare patients treated by Dr. Ruth Y. Peng, MD in 2020

Hypertension	75
High Cholesterol	67
Stroke	4
Ischemic Heart Disease	32
Depression	23
Chronic Kidney Disease	32
Asthma	11
Osteoperosis	8
Atrial Fibrilation	10
Heart Failure	13
Chronic Obstructive Pulmonary Disease	14
Diabetes	31
Dementia	6
Cancer	27

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Ruth Y. Peng, MD treated as a pathologist in Baltimore, MD during 2021 were lab tests, cytology, consultation and second opinions.

Volume of procedures performed by Dr. Ruth Y. Peng, MD for Medicare patients.

consultation	53
cytology	119
lab tests	466
second opinions	16

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Ruth Y. Peng, MD.

**Gender**
Male	294
Female	622

**Ethnicity**
Non-Hispanic White	623
Black	251
Hispanic	0
Asian	0
Other	22
Native American	0

**Age**
From 65 to 74	478
From 75 to 84	254
85 and over	71
Less than 65	113

Conditions of Medicare patients treated by Dr. Ruth Y. Peng, MD in 2021

Hypertension	75
High Cholesterol	69
Stroke	4
Ischemic Heart Disease	32
Depression	24
Chronic Kidney Disease	32
Asthma	10
Osteoperosis	8
Atrial Fibrilation	10
Heart Failure	13
Chronic Obstructive Pulmonary Disease	14
Diabetes	33
Dementia	6
Cancer	24

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Ruth Y. Peng, MD treated as a pathologist in Baltimore, MD during 2022 were lab tests, cytology, consultation and second opinions.

Volume of procedures performed by Dr. Ruth Y. Peng, MD for Medicare patients.

consultation	68
cytology	126
lab tests	488
second opinions	22

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Ruth Y. Peng, MD.

**Gender**
Male	384
Female	629

**Ethnicity**
Non-Hispanic White	743
Black	197
Hispanic	0
Asian	0
Other	44
Native American	0

**Age**
From 65 to 74	526
From 75 to 84	309
85 and over	74
Less than 65	104

Conditions of Medicare patients treated by Dr. Ruth Y. Peng, MD in 2022

Hypertension	75
High Cholesterol	75
Stroke	7
Ischemic Heart Disease	25
Depression	23
Chronic Kidney Disease	20
Asthma	13
Osteoperosis	13
Atrial Fibrilation	12
Heart Failure	11
Chronic Obstructive Pulmonary Disease	15
Diabetes	30
Dementia	4
Cancer	25

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

The top procedures that Dr. Ruth Y. Peng, MD treated as a pathologist in Baltimore, MD during 2023 were lab tests, consultation, cytology and second opinions.

Volume of procedures performed by Dr. Ruth Y. Peng, MD for Medicare patients.

consultation	74
cytology	72
lab tests	527
second opinions	25

2023 Medicare Patient Data

Information about Medicare patients treated by Dr. Ruth Y. Peng, MD.

**Gender**
Male	389
Female	734

**Ethnicity**
Non-Hispanic White	788
Black	240
Hispanic	15
Asian	27
Other	53
Native American	0

**Age**
From 65 to 74	574
From 75 to 84	377
85 and over	58
Less than 65	114

Conditions of Medicare patients treated by Dr. Ruth Y. Peng, MD in 2023

Hypertension	73
High Cholesterol	75
Stroke	7
Ischemic Heart Disease	24
Depression	22
Chronic Kidney Disease	20
Asthma	13
Osteoperosis	15
Atrial Fibrilation	13
Heart Failure	10
Chronic Obstructive Pulmonary Disease	16
Diabetes	30
Dementia	3
Cancer	29

Medicare Procedure and Patient Information

2024 Medicare Procedure Volume

The top procedures that Dr. Ruth Y. Peng, MD treated as a pathologist in Baltimore, MD during 2024 were lab tests, cytology, consultation and second opinions.

Volume of procedures performed by Dr. Ruth Y. Peng, MD for Medicare patients.

consultation	66
cytology	146
lab tests	417
second opinions	17

2024 Medicare Patient Data

Information about Medicare patients treated by Dr. Ruth Y. Peng, MD.

**Gender**
Male	380
Female	628

**Ethnicity**
Non-Hispanic White	720
Black	220
Hispanic	18
Asian	17
Other	33
Native American	0

**Age**
From 65 to 74	543
From 75 to 84	314
85 and over	66
Less than 65	85

Conditions of Medicare patients treated by Dr. Ruth Y. Peng, MD in 2024

Hypertension	75
High Cholesterol	75
Stroke	7
Ischemic Heart Disease	25
Depression	22
Chronic Kidney Disease	23
Asthma	14
Osteoperosis	15
Atrial Fibrilation	14
Heart Failure	11
Chronic Obstructive Pulmonary Disease	17
Diabetes	33
Dementia	3
Cancer	32

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2024

Volume of procedures performed by Dr. Ruth Y. Peng, MD for Medicare patients.

The highest averages for the top procedures that Dr. Ruth Y. Peng, MD treated as a pathologist in Baltimore, MD were lab tests, cytology, consultation and second opinions.

consultation	73
cytology	172
lab tests	637
second opinions	27

Average Medicare Patient Data From 2012 - 2024

Information about Medicare patients treated by Dr. Ruth Y. Peng, MD.

**Gender**
Male	395
Female	655

**Ethnicity**
Black / African American	271
Asian / Pacific Islander	14
Non-Hispanic White	726
Hispanic	2
Native American / Alaskan Native	0
Other	18

**Age**
75 to 84	299
85 and over	76
Less than 65	137
65 to 74	493

Average of Total of Conditions of Medicare patients treated by Dr. Ruth Y. Peng, MD From 2012 - 2024

The highest averages of the most common conditions of Medicare patients that Dr. Ruth Y. Peng, MD treated were hypertension, high cholesterol, diabetes and ischemic heart disease.

Hypertension	68
High Cholesterol	62
Stroke	4
Ischemic Heart Disease	27
Depression	21
Chronic Kidney Disease	24
Asthma	11
Osteoporosis	7
Heart Failure	11
Chronic Obstructive Pulmonary Disease	14
Diabetes	29
Atrial Fibrillation	10
Dementia	4
Cancer	23

Education & Training

She has a state license in Wisconsin.

Licensed In: Wisconsin

Ratings & Reviews

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General Payments

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

**Payments by Company**
Roche Diagnostics Corporation	$41 INFORM HER2 Dual ISH DNA Probe Cocktail $24	TD VENTANA Digital Pathology Products $16
Siemens Medical Solutions USA, Inc.	$13 Automated Blood Coagulation Analyzer CS-2500 $13
Foundation Medicine, Inc.	$10 FOUNDATIONONE HEME $10
Genentech USA, Inc.	$10 $10