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Dr. Michelle A. Petri, MD

Accepting New Patients

(Michelle Petri, MD)

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Specializes in: Rheumatology (Arthritis & Autoimmune Diseases)

601 North Caroline Street Floor 7 Johns Hopkins Outpatient Center
Baltimore, MD 21287

(410) 955-9114

Dr. Michelle A. Petri, MD is a rheumatologist in Baltimore, MD specializing in rheumatology (arthritis & autoimmune diseases). Dr. Michelle A. Petri, MD is affiliated with Levi Watkins, Jr., M.D., Outpatient Center.

Office Locations

601 North Caroline Street Floor 7 Johns Hopkins Outpatient Center
Baltimore, MD 21287

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In The News (see more mentions in the news)

“Among patients with systemic lupus erythematosus (SLE) with levels of 25-hydroxyvitamin D (25-OH-D) -- the vitamin's main circulating form -- below 20 ng/mL when first enrolled in the Hopkins Lupus...”—"Low Vitamin D Hits Hard for Lupus Patients", MedPage Today, November 2025

“On a multivariable analysis, a one-unit increase on the Safety of Estrogens in Lupus Erythematosus National Assessment (SELENA) version of the SLE Disease Activity Index (SLEDAI) was associated...”—"In Lupus, Even Minor Changes in Disease Activity Matter", MedPage Today, April 2021

“Significant reductions also were seen specifically for the most recent blood level measurement, with a rate ratio of 0.87 (95% CI 0.78-0.98, P =0.0249), said Michelle Petri, MD, and colleagues from...”—"Staying Safe in Lupus: Monitor Hydroxychloroquine Levels", MedPage Today, January 2021

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

Volume of procedures performed by Dr. Michelle A. Petri, MD for Medicare patients.

doctor visit	621

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Michelle A. Petri, MD treated as a rheumatologist in Baltimore, MD during 2013 were hospital care and inpatient care.

Volume of procedures performed by Dr. Michelle A. Petri, MD for Medicare patients.

doctor visit	612
hospital care	12
inpatient care	12

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Michelle A. Petri, MD.

**Gender**
Male	30
Female	279

**Ethnicity**
Non-Hispanic White	152
Black	135
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	97
From 75 to 84	0
85 and over	0
Less than 65	188

Conditions of Medicare patients treated by Dr. Michelle A. Petri, MD in 2013

Hypertension	60
High Cholesterol	45
Stroke	9
Ischemic Heart Disease	31
Depression	28
Chronic Kidney Disease	33
Asthma	14
Osteoperosis	11
Atrial Fibrilation	6
Heart Failure	17
Chronic Obstructive Pulmonary Disease	9
Diabetes	20
Dementia	5
Cancer	4

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

Volume of procedures performed by Dr. Michelle A. Petri, MD for Medicare patients.

doctor visit	629

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Michelle A. Petri, MD.

**Gender**
Male	31
Female	272

**Ethnicity**
Non-Hispanic White	151
Black	132
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	103
From 75 to 84	0
85 and over	0
Less than 65	176

Conditions of Medicare patients treated by Dr. Michelle A. Petri, MD in 2014

Hypertension	60
High Cholesterol	44
Stroke	8
Ischemic Heart Disease	28
Depression	23
Chronic Kidney Disease	27
Asthma	12
Osteoperosis	12
Atrial Fibrilation	5
Heart Failure	16
Chronic Obstructive Pulmonary Disease	10
Diabetes	15
Dementia	0
Cancer	5

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

Volume of procedures performed by Dr. Michelle A. Petri, MD for Medicare patients.

doctor visit	620

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Michelle A. Petri, MD.

**Gender**
Male	66
Female	546

**Ethnicity**
Non-Hispanic White	312
Black	264
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	216
From 75 to 84	0
85 and over	0
Less than 65	338

Conditions of Medicare patients treated by Dr. Michelle A. Petri, MD in 2015

Hypertension	61
High Cholesterol	61
Stroke	5
Ischemic Heart Disease	32
Depression	29
Chronic Kidney Disease	30
Asthma	17
Osteoperosis	12
Atrial Fibrilation	7
Heart Failure	16
Chronic Obstructive Pulmonary Disease	11
Diabetes	14
Dementia	0
Cancer	6

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

Volume of procedures performed by Dr. Michelle A. Petri, MD for Medicare patients.

doctor visit	567

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Michelle A. Petri, MD.

**Gender**
Male	32
Female	269

**Ethnicity**
Non-Hispanic White	155
Black	129
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	106
From 75 to 84	0
85 and over	0
Less than 65	165

Conditions of Medicare patients treated by Dr. Michelle A. Petri, MD in 2016

Hypertension	67
High Cholesterol	75
Stroke	9
Ischemic Heart Disease	35
Depression	28
Chronic Kidney Disease	37
Asthma	17
Osteoperosis	15
Atrial Fibrilation	7
Heart Failure	16
Chronic Obstructive Pulmonary Disease	11
Diabetes	15
Dementia	4
Cancer	7

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

Volume of procedures performed by Dr. Michelle A. Petri, MD for Medicare patients.

doctor visit	455

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Michelle A. Petri, MD.

**Gender**
Male	26
Female	216

**Ethnicity**
Non-Hispanic White	120
Black	101
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	95
From 75 to 84	0
85 and over	0
Less than 65	122

Conditions of Medicare patients treated by Dr. Michelle A. Petri, MD in 2017

Hypertension	71
High Cholesterol	72
Stroke	7
Ischemic Heart Disease	38
Depression	31
Chronic Kidney Disease	48
Asthma	13
Osteoperosis	13
Atrial Fibrilation	7
Heart Failure	19
Chronic Obstructive Pulmonary Disease	12
Diabetes	19
Dementia	6
Cancer	6

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

Volume of procedures performed by Dr. Michelle A. Petri, MD for Medicare patients.

doctor visit	458

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Michelle A. Petri, MD.

**Gender**
Male	31
Female	207

**Ethnicity**
Non-Hispanic White	129
Black	91
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	102
From 75 to 84	0
85 and over	0
Less than 65	105

Conditions of Medicare patients treated by Dr. Michelle A. Petri, MD in 2018

Hypertension	66
High Cholesterol	75
Stroke	11
Ischemic Heart Disease	37
Depression	26
Chronic Kidney Disease	45
Asthma	14
Osteoperosis	13
Atrial Fibrilation	6
Heart Failure	18
Chronic Obstructive Pulmonary Disease	12
Diabetes	18
Dementia	8
Cancer	6

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

Volume of procedures performed by Dr. Michelle A. Petri, MD for Medicare patients.

doctor visit	475

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Michelle A. Petri, MD.

**Gender**
Male	32
Female	211

**Ethnicity**
Non-Hispanic White	133
Black	89
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	109
From 75 to 84	0
85 and over	0
Less than 65	101

Conditions of Medicare patients treated by Dr. Michelle A. Petri, MD in 2019

Hypertension	69
High Cholesterol	75
Stroke	12
Ischemic Heart Disease	39
Depression	29
Chronic Kidney Disease	46
Asthma	13
Osteoperosis	20
Atrial Fibrilation	8
Heart Failure	16
Chronic Obstructive Pulmonary Disease	9
Diabetes	17
Dementia	6
Cancer	6

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

Volume of procedures performed by Dr. Michelle A. Petri, MD for Medicare patients.

doctor visit	425

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Michelle A. Petri, MD.

**Gender**
Male	36
Female	219

**Ethnicity**
Non-Hispanic White	142
Black	89
Hispanic	11
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	111
From 75 to 84	0
85 and over	0
Less than 65	101

Conditions of Medicare patients treated by Dr. Michelle A. Petri, MD in 2020

Hypertension	67
High Cholesterol	75
Stroke	6
Ischemic Heart Disease	39
Depression	24
Chronic Kidney Disease	48
Asthma	15
Osteoperosis	20
Atrial Fibrilation	9
Heart Failure	18
Chronic Obstructive Pulmonary Disease	9
Diabetes	18
Dementia	5
Cancer	6

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

Volume of procedures performed by Dr. Michelle A. Petri, MD for Medicare patients.

doctor visit	515

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Michelle A. Petri, MD.

**Gender**
Male	30
Female	228

**Ethnicity**
Non-Hispanic White	144
Black	92
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	125
From 75 to 84	0
85 and over	0
Less than 65	96

Conditions of Medicare patients treated by Dr. Michelle A. Petri, MD in 2021

Hypertension	69
High Cholesterol	75
Stroke	10
Ischemic Heart Disease	41
Depression	25
Chronic Kidney Disease	49
Asthma	15
Osteoperosis	19
Atrial Fibrilation	4
Heart Failure	14
Chronic Obstructive Pulmonary Disease	11
Diabetes	18
Dementia	4
Cancer	7

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

Volume of procedures performed by Dr. Michelle A. Petri, MD for Medicare patients.

doctor visit	477

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Michelle A. Petri, MD.

**Gender**
Male	25
Female	231

**Ethnicity**
Non-Hispanic White	144
Black	88
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	124
From 75 to 84	0
85 and over	0
Less than 65	88

Conditions of Medicare patients treated by Dr. Michelle A. Petri, MD in 2022

Hypertension	75
High Cholesterol	75
Stroke	13
Ischemic Heart Disease	32
Depression	24
Chronic Kidney Disease	43
Asthma	19
Osteoperosis	29
Atrial Fibrilation	13
Heart Failure	16
Chronic Obstructive Pulmonary Disease	13
Diabetes	21
Dementia	0
Cancer	10

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. Michelle A. Petri, MD for Medicare patients.

The highest averages for the top procedures that Dr. Michelle A. Petri, MD treated as a rheumatologist in Baltimore, MD were hospital care and inpatient care.

doctor visit	532
hospital care	12
inpatient care	12

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. Michelle A. Petri, MD.

**Gender**
Male	30
Female	243

**Ethnicity**
Black / African American	110
Asian / Pacific Islander	0
Non-Hispanic White	143
Native American / Alaskan Native	0
Hispanic	1
Other	0

**Age**
75 to 84	0
85 and over	0
Less than 65	134
65 to 74	108

Average of Total of Conditions of Medicare patients treated by Dr. Michelle A. Petri, MD From 2012 - 2022

The highest averages of the most common conditions of Medicare patients that Dr. Michelle A. Petri, MD treated were high cholesterol, hypertension, chronic kidney disease and ischemic heart disease.

Hypertension	60
High Cholesterol	61
Stroke	8
Ischemic Heart Disease	32
Depression	24
Chronic Kidney Disease	36
Asthma	13
Osteoporosis	14
Heart Failure	15
Chronic Obstructive Pulmonary Disease	9
Diabetes	15
Atrial Fibrillation	6
Dementia	3
Cancer	5

Education & Training

She has a state license in Maryland.

Licensed In: Maryland

Affiliations & Hospitals

Dr. Michelle A. Petri, MD is associated with these hospitals and organizations:

Levi Watkins, Jr., M.D., Outpatient Center

Ratings & Reviews

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General Payments

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

**Payments by Company**
Eli Lilly and Company	$67,178 $67,178
GlaxoSmithKline, LLC.	$64,778 BENLYSTA $47,936	$16,842
SANOFI-AVENTIS U.S. LLC	$57,529 NO PRODUCT DISCUSSED $50,802	SYNVISC $4,279	$2,448
UCB SA	$51,843 $51,843
Aurinia Pharma U.S., Inc.	$49,072 LUPKYNIS $2,000	$47,072
Other	$157,431 STELARA $12,905	ORENCIA $5,761	ABT 199 $5,160	Ilaris $5,134	NON-PRODUCT $4,942	Other $123,529

**Types of Payments**
Consulting Fee	$262,452
Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program	$92,666
Travel and Lodging	$75,532
Honoraria	$7,700
Food and Beverage	$5,460
Other	$4,020

Research Payments

Dr. Michelle A. Petri, MD has received 155 research payments totaling $1,618,388.

Ownership and Interest Payments

This table describes ownership payments received by Dr. Michelle A. Petri, MD.

United Rheumatology	2017	$15,000.00	Physician Covered Recipient	The physician covered recipient owns 6 unit(s) valued at $2,500 per unit
United Rheumatology	2016	$15,000.00	Physician Covered Recipient	The Physician Covered Recipient holds 6 units with an Equity Stake equal to 0.150%

Biography

Dr. Michelle Petri is a physician who specializes in rheumatology (arthritis & autoimmune diseases). She graduated from Harvard Medical School. Dr. Petri is professionally affiliated with Johns Hopkins University. Her practice in Baltimore, MD is open to new patients as reported by Yext.