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Dr. Samara Pena, MD

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Specializes in: Adult Endocrinology

University of Puerto Rico School of Medicine

Professional interests include: pituitary disorders, type 2 diabetes, parathyroid disease, and more.

21 Main Street
Maynard, MA 01754

(978) 287-8520

Dr. Samara Pena, MD is an endocrinologist in Ayer, MA specializing in adult endocrinology. She graduated from University of Puerto Rico School of Medicine. Dr. Samara Pena, MD is affiliated with Emerson Health.

Office Locations

200 Groton Road Suite 150
Ayer, MA 01432

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11 NEVINS STREET SUITE 202
BRIGHTON, MA 02135

(617) 779-6700

(617) 779-6771

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Emerson Health

21 Main Street
Maynard, MA 01754

(978) 287-8520

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Some issues Dr. Samara Pena, MD can help you with:

Thyroid Problems

Thyroid problems are a group of conditions that alter hormone regulation and metabolism. The thyroid is a small, butterfly-shaped gland located in the lower neck, just below the Adam's apple (laryngeal prominence) and larynx (voice box). Despite its small size, the thyroid has an outsized effect on the body by regulating hormones that control metabolism. Metabolism is the body's process of converting consumed food into fuel to power the entire body. Heart rate, weight, cholesterol, body temperature, and even physical growth and development are all affected by the metabolism.

When the thyroid malfunctions, the body is unable to properly process and allocate energy. Thyroid problems, such as hyperthyroidism (overactive thyroid) and hypothyroidism (underactive thyroid), cause irregular metabolism. In some cases, the body produces antibodies that attack the thyroid cells for unknown reasons. The damaged thyroid responds by releasing either too little or too much T3 and T4 thyroid hormones. Thyroid malfunctions may also arise from genetic causes or iodine deficiency. Thyroid problems may include:

Hashimoto's thyroiditis, an autoimmune disease that causes hypothyroidism
Graves' disease, an autoimmune disease that causes hyperthyroidism
Goiter
Thyroid nodule
Thyroid cancer

Hashimoto's is the leading cause of hypothyroidism, which is when the thyroid does not produce enough hormones to stimulate adequate metabolism. The condition is diagnosed by blood tests that measure TSH (thyroid stimulating hormone) and detect Hashimoto's antibodies. Symptoms of hypothyroidism include sluggish metabolism, inflammation, fatigue, weight gain, brittle hair, dry skin, and sensitivity to cold. To supplement impaired thyroid function, patients with Hashimoto's are typically prescribed synthetic thyroid hormone pills. Such patients may need to consume synthetic thyroids for the rest of their lives. Other treatments may include dietary changes, such as the avoidance of certain foods and medication to reduce inflammation. Frequent blood tests can inform patients if their TSH levels are within a normal range.

Grave's disease is most frequently the cause of hyperthyroidism, which is when the thyroid produces too many hormones, overstimulating one's metabolism. The condition is also diagnosed by blood tests that measure TSH and detect Grave's antibodies. Elevated heart rate, high blood pressure, sweating, bulging eyes, and weight loss are common symptoms of hyperthyroidism. Treatments for hyperthyroidism include oral radioactive iodine, which slowly shrinks the thyroid, slowing the production of excess thyroid hormone. Other anti-thyroid medications such as methimazole (Tapazole) also reduce the production of thyroid hormones. Blood pressure medications known as beta blockers can ease the increased heart rate caused by hyperthyroidism. If treatments are unsuccessful, patients may be prescribed a thyroidectomy, or surgery to remove part or all of the thyroid. Some patients with hyperthyroidism may require ophthalmological (eye medicine) treatments such as eye drops, prednisone, and surgery to reduce eye swelling and bulging.

Untreated thyroid disorders frequently lead to goiters or thyroid nodules. A thyroid goiter is a large lump that can be felt near the base of the neck and is made of swollen thyroid tissue or nodules (excess cell growth). Nodules and goiters are diagnosed by CT scan or ultrasound. Obstructive goiters can cause pain, coughing, and abnormal breathing. The most common cause of goiters is hyperthyroidism (overactive thyroid). However, Hashimoto's is also known to cause goiters or nodules. Goiters develop from continued damage from antibodies to the thyroid over time. At times, a goiter can result from a cancerous thyroid tumor. Most goiters and nodules are themselves benign.

The exact causes of thyroid cancer are unknown. People who develop thyroid cancer may or may not have another thyroid problem such as Hashimoto's or Grave's disease. Symptoms of thyroid cancer include a nodule that can be felt on the neck, hoarseness, difficulty swallowing, swelling in the neck, and neck and throat pain. CT and MRI scans are used to diagnose thyroid cancer. There are four types of thyroid cancer which vary in intensity. Thyroidectomy (thyroid removal surgery) is usually prescribed to treat thyroid cancer.

Thyroid problems are often long-term conditions that require some form of treatment. With regular monitoring and medication, many people with thyroid problems are able to lead active and fulfilling lives.

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. Samara Pena, MD treated as an endocrinologist in Ayer, MA during 2012 were diabetes management, lab tests, inpatient care and hospital care.

Volume of procedures performed by Dr. Samara Pena, MD for Medicare patients.

aspiration	18
diabetes management	279
diagnostic procedures	18
doctor visit	467
hospital care	148
image guided procedures	18
inpatient care	148
lab tests	279
minimally invasive procedures	18
minor procedures	18
musculoskeletal imaging	70
neck imaging	78
preventive care	109
ultrasound (sonogram)	78
X-rays	70

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Samara Pena, MD treated as an endocrinologist in Ayer, MA during 2013 were lab tests, diabetes management, hospital care and inpatient care.

Volume of procedures performed by Dr. Samara Pena, MD for Medicare patients.

diabetes management	255
doctor visit	329
hospital care	164
inpatient care	164
lab tests	255
musculoskeletal imaging	11
neck imaging	102
preventive care	121
ultrasound (sonogram)	102
vaccines	13
X-rays	11

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Samara Pena, MD.

**Gender**
Male	109
Female	231

**Ethnicity**
Non-Hispanic White	253
Black	17
Hispanic	26
Asian	13
Other	31
Native American	0

**Age**
From 65 to 74	118
From 75 to 84	113
85 and over	42
Less than 65	67

Conditions of Medicare patients treated by Dr. Samara Pena, MD in 2013

Hypertension	75
High Cholesterol	69
Stroke	6
Ischemic Heart Disease	42
Depression	30
Chronic Kidney Disease	33
Asthma	9
Osteoperosis	16
Atrial Fibrilation	16
Heart Failure	27
Chronic Obstructive Pulmonary Disease	14
Diabetes	57
Dementia	14
Cancer	11

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Samara Pena, MD treated as an endocrinologist in Ayer, MA during 2014 were diabetes management, lab tests, inpatient care and hospital care.

Volume of procedures performed by Dr. Samara Pena, MD for Medicare patients.

aspiration	17
diabetes management	350
diagnostic procedures	17
doctor visit	445
hospital care	146
image guided procedures	17
inpatient care	146
lab tests	350
minimally invasive procedures	17
minor procedures	17
neck imaging	115
preventive care	144
ultrasound (sonogram)	115
vaccines	11

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Samara Pena, MD.

**Gender**
Male	121
Female	207

**Ethnicity**
Non-Hispanic White	238
Black	21
Hispanic	26
Asian	0
Other	28
Native American	0

**Age**
From 65 to 74	129
From 75 to 84	84
85 and over	47
Less than 65	68

Conditions of Medicare patients treated by Dr. Samara Pena, MD in 2014

Hypertension	75
High Cholesterol	68
Stroke	5
Ischemic Heart Disease	44
Depression	31
Chronic Kidney Disease	35
Asthma	8
Osteoperosis	14
Atrial Fibrilation	12
Heart Failure	23
Chronic Obstructive Pulmonary Disease	14
Diabetes	57
Dementia	13
Cancer	11

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Samara Pena, MD treated as an endocrinologist in Ayer, MA during 2015 were lab tests, diabetes management, preventive care and hospital care.

Volume of procedures performed by Dr. Samara Pena, MD for Medicare patients.

diabetes management	424
doctor visit	520
hospital care	115
inpatient care	115
lab tests	451
neck imaging	105
preventive care	190
ultrasound (sonogram)	105
vaccines	12

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Samara Pena, MD.

**Gender**
Male	236
Female	438

**Ethnicity**
Non-Hispanic White	480
Black	34
Hispanic	56
Asian	0
Other	70
Native American	0

**Age**
From 65 to 74	216
From 75 to 84	228
85 and over	78
Less than 65	152

Conditions of Medicare patients treated by Dr. Samara Pena, MD in 2015

Hypertension	75
High Cholesterol	68
Stroke	4
Ischemic Heart Disease	42
Depression	27
Chronic Kidney Disease	36
Asthma	12
Osteoperosis	15
Atrial Fibrilation	12
Heart Failure	22
Chronic Obstructive Pulmonary Disease	12
Diabetes	58
Dementia	10
Cancer	11

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Samara Pena, MD treated as an endocrinologist in Ayer, MA during 2016 were lab tests, diabetes management, preventive care and hospital care.

Volume of procedures performed by Dr. Samara Pena, MD for Medicare patients.

diabetes management	422
doctor visit	520
hospital care	118
inpatient care	118
lab tests	469
neck imaging	111
preventive care	205
ultrasound (sonogram)	111
vaccines	11

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Samara Pena, MD.

**Gender**
Male	124
Female	215

**Ethnicity**
Non-Hispanic White	260
Black	0
Hispanic	28
Asian	0
Other	30
Native American	0

**Age**
From 65 to 74	124
From 75 to 84	110
85 and over	43
Less than 65	62

Conditions of Medicare patients treated by Dr. Samara Pena, MD in 2016

Hypertension	75
High Cholesterol	69
Stroke	0
Ischemic Heart Disease	41
Depression	29
Chronic Kidney Disease	54
Asthma	17
Osteoperosis	20
Atrial Fibrilation	15
Heart Failure	25
Chronic Obstructive Pulmonary Disease	13
Diabetes	57
Dementia	10
Cancer	11

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Samara Pena, MD treated as an endocrinologist in Ayer, MA during 2017 were lab tests, diabetes management, preventive care and hospital care.

Volume of procedures performed by Dr. Samara Pena, MD for Medicare patients.

diabetes management	408
doctor visit	546
hospital care	107
inpatient care	107
lab tests	464
minimally invasive procedures	12
neck imaging	100
preventive care	200
ultrasound (sonogram)	100

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Samara Pena, MD.

**Gender**
Male	141
Female	218

**Ethnicity**
Non-Hispanic White	254
Black	18
Hispanic	32
Asian	22
Other	33
Native American	0

**Age**
From 65 to 74	149
From 75 to 84	109
85 and over	40
Less than 65	61

Conditions of Medicare patients treated by Dr. Samara Pena, MD in 2017

Hypertension	75
High Cholesterol	60
Stroke	4
Ischemic Heart Disease	35
Depression	28
Chronic Kidney Disease	57
Asthma	10
Osteoperosis	20
Atrial Fibrilation	14
Heart Failure	27
Chronic Obstructive Pulmonary Disease	13
Diabetes	58
Dementia	13
Cancer	14

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Samara Pena, MD treated as an endocrinologist in Ayer, MA during 2018 were lab tests, diabetes management, preventive care and hospital care.

Volume of procedures performed by Dr. Samara Pena, MD for Medicare patients.

diabetes management	331
doctor visit	495
hospital care	170
inpatient care	170
lab tests	390
minimally invasive procedures	27
neck imaging	79
preventive care	197
ultrasound (sonogram)	79
vaccines	11

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Samara Pena, MD.

**Gender**
Male	158
Female	252

**Ethnicity**
Non-Hispanic White	294
Black	15
Hispanic	43
Asian	19
Other	39
Native American	0

**Age**
From 65 to 74	175
From 75 to 84	118
85 and over	44
Less than 65	73

Conditions of Medicare patients treated by Dr. Samara Pena, MD in 2018

Hypertension	75
High Cholesterol	71
Stroke	4
Ischemic Heart Disease	37
Depression	27
Chronic Kidney Disease	59
Asthma	10
Osteoperosis	23
Atrial Fibrilation	14
Heart Failure	26
Chronic Obstructive Pulmonary Disease	14
Diabetes	56
Dementia	14
Cancer	13

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Samara Pena, MD treated as an endocrinologist in Ayer, MA during 2019 were lab tests, diabetes management, preventive care and hospital care.

Volume of procedures performed by Dr. Samara Pena, MD for Medicare patients.

diabetes management	369
doctor visit	569
hospital care	165
inpatient care	165
lab tests	404
minimally invasive procedures	24
neck imaging	120
preventive care	196
ultrasound (sonogram)	120
vaccines	23

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Samara Pena, MD.

**Gender**
Male	147
Female	276

**Ethnicity**
Non-Hispanic White	318
Black	16
Hispanic	29
Asian	26
Other	34
Native American	0

**Age**
From 65 to 74	173
From 75 to 84	132
85 and over	56
Less than 65	62

Conditions of Medicare patients treated by Dr. Samara Pena, MD in 2019

Hypertension	75
High Cholesterol	70
Stroke	5
Ischemic Heart Disease	40
Depression	25
Chronic Kidney Disease	58
Asthma	10
Osteoperosis	23
Atrial Fibrilation	10
Heart Failure	26
Chronic Obstructive Pulmonary Disease	16
Diabetes	55
Dementia	14
Cancer	13

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Samara Pena, MD treated as an endocrinologist in Ayer, MA during 2020 were lab tests, diabetes management, hospital care and inpatient care.

Volume of procedures performed by Dr. Samara Pena, MD for Medicare patients.

diabetes management	130
doctor visit	226
hospital care	110
inpatient care	110
lab tests	158
neck imaging	37
preventive care	78
ultrasound (sonogram)	37

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Samara Pena, MD.

**Gender**
Male	115
Female	207

**Ethnicity**
Non-Hispanic White	231
Black	14
Hispanic	27
Asian	19
Other	31
Native American	0

**Age**
From 65 to 74	141
From 75 to 84	93
85 and over	43
Less than 65	45

Conditions of Medicare patients treated by Dr. Samara Pena, MD in 2020

Hypertension	75
High Cholesterol	73
Stroke	3
Ischemic Heart Disease	44
Depression	28
Chronic Kidney Disease	61
Asthma	11
Osteoperosis	24
Atrial Fibrilation	11
Heart Failure	26
Chronic Obstructive Pulmonary Disease	11
Diabetes	57
Dementia	13
Cancer	12

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Samara Pena, MD treated as an endocrinologist in Ayer, MA during 2021 were ultrasound (sonogram), neck imaging, hospital care and inpatient care.

Volume of procedures performed by Dr. Samara Pena, MD for Medicare patients.

diabetes management	12
doctor visit	440
hospital care	13
inpatient care	13
lab tests	12
neck imaging	23
ultrasound (sonogram)	23

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Samara Pena, MD.

**Gender**
Male	131
Female	206

**Ethnicity**
Non-Hispanic White	289
Black	0
Hispanic	22
Asian	0
Other	13
Native American	0

**Age**
From 65 to 74	152
From 75 to 84	99
85 and over	26
Less than 65	60

Conditions of Medicare patients treated by Dr. Samara Pena, MD in 2021

Hypertension	73
High Cholesterol	75
Stroke	5
Ischemic Heart Disease	48
Depression	29
Chronic Kidney Disease	62
Asthma	12
Osteoperosis	17
Atrial Fibrilation	11
Heart Failure	22
Chronic Obstructive Pulmonary Disease	12
Diabetes	69
Dementia	9
Cancer	12

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Samara Pena, MD treated as an endocrinologist in Ayer, MA during 2022 were ultrasound (sonogram) and neck imaging.

Volume of procedures performed by Dr. Samara Pena, MD for Medicare patients.

doctor visit	461
neck imaging	18
ultrasound (sonogram)	18

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Samara Pena, MD.

**Gender**
Male	107
Female	210

**Ethnicity**
Non-Hispanic White	279
Black	0
Hispanic	14
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	150
From 75 to 84	106
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Samara Pena, MD in 2022

Hypertension	75
High Cholesterol	75
Stroke	8
Ischemic Heart Disease	37
Depression	28
Chronic Kidney Disease	31
Asthma	16
Osteoperosis	22
Atrial Fibrilation	17
Heart Failure	15
Chronic Obstructive Pulmonary Disease	16
Diabetes	69
Dementia	6
Cancer	12

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. Samara Pena, MD for Medicare patients.

The highest averages for the top procedures that Dr. Samara Pena, MD treated as an endocrinologist in Ayer, MA were lab tests, diabetes management, preventive care and inpatient care.

aspiration	17
diabetes management	298
diagnostic procedures	17
doctor visit	456
hospital care	125
image guided procedures	17
inpatient care	125
lab tests	323
minimally invasive procedures	19
minor procedures	17
musculoskeletal imaging	40
neck imaging	80
preventive care	160
ultrasound (sonogram)	80
vaccines	13
X-rays	40

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. Samara Pena, MD.

**Gender**
Male	126
Female	223

**Ethnicity**
Black / African American	12
Asian / Pacific Islander	9
Non-Hispanic White	263
Native American / Alaskan Native	0
Hispanic	27
Other	28

**Age**
75 to 84	108
85 and over	38
Less than 65	59
65 to 74	138

Average of Total of Conditions of Medicare patients treated by Dr. Samara Pena, MD From 2012 - 2022

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

Hypertension	68
High Cholesterol	63
Stroke	4
Ischemic Heart Disease	37
Depression	25
Chronic Kidney Disease	44
Asthma	10
Osteoporosis	17
Heart Failure	21
Chronic Obstructive Pulmonary Disease	12
Diabetes	53
Atrial Fibrillation	12
Dementia	10
Cancer	10

Education & Training

Dr. Samara Pena, MD graduated from University of Puerto Rico School of Medicine. She completed residency at St Elizabeth's Medical Center. She is certified by the Internal Medicine Endocrinology and has a state license in Massachusetts.

Medical School: University of Puerto Rico School of Medicine

Residency: St Elizabeth's Medical Center

Board Certification: Internal Medicine Endocrinology

Licensed In: Massachusetts

Affiliations & Hospitals

Dr. Samara Pena, MD is associated with these hospitals and organizations:

Emerson Health

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General Payments

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

**Payments by Company**
Lilly USA, LLC	$398 MOUNJARO $161	JARDIANCE $77	TRULICITY $39	LYUMJEV $36	BASAGLAR $24	Other $61
SANOFI-AVENTIS U.S. LLC	$162 TOUJEO $106	TZIELD $23	AFREZZA $22	THYROGEN $10
Amgen Inc.	$162 Prolia $122	Repatha $40
Novo Nordisk Inc	$121 RYBELSUS $41	Wegovy $24	Ozempic $20	Tresiba $17	$19
Dexcom, Inc.	$113 Dexcom G4 Platinum $49	DEXCOM G6 TRANSMITTER $47	Dexcom CGM $17
Other	$690 FARXIGA $70	Minimed 630G $66	NATPARA $62	MINIMED 780G $48	t:slim X2 Insulin Pump with Control-IQ $43	Other $400

**Types of Payments**
Food and Beverage	$1,645

Biography

Dr. Samara Pena's specialty is adult endocrinology. Her areas of expertise include the following: thyroid problems, pituitary disorders, and type 2 diabetes. Dr. Pena is affiliated with Emerson Health. She has an open panel in Ayer, MA according to Doctor.com. She attended medical school at the University of Puerto Rico School of Medicine. In addition to English, she speaks Spanish.