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Home > PA Providers > Radiation Oncologists

Dr. Kenneth L. Zeitzer, MD

Accepting New Patients

(160 Ratings)

Specializes in: Radiation Oncology

Thomas Jefferson University, Jefferson Medical College

Professional interests include: thyroid cancer, liver cancer, larynx cancer, and more.

5501 Old York Road Ground Floor
Philadelphia, PA 19141

(215) 456-6200

Dr. Kenneth L. Zeitzer, MD is a radiation oncologist in Philadelphia, PA specializing in radiation oncology. He graduated from Thomas Jefferson University, Jefferson Medical College. Dr. Kenneth L. Zeitzer, MD is affiliated with Jefferson Health, Jefferson Einstein Philadelphia Hospital and Jefferson Einstein Montgomery Hospital.

Office Locations

5501 Old York Road Ground Floor
Philadelphia, PA 19141

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5501 OLD YORK ROAD
PHILADELPHIA, PA 19141

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559 W. Germantown Pike
East Norriton, PA 19403

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Some issues Dr. Kenneth L. Zeitzer, MD can help you with:

Radioembolization (Selective Internal Radiation Therapy)

Radioembolization, or selective internal radiation therapy (SIRT), is a minimally invasive procedure that uses radiation to treat liver tumors. By targeting the hepatic artery, or the main blood vessel that supplies the liver, radioembolization can cut off the blood supply to liver tumors. The tumors shrink, and minimal damage is done to healthy tissue. Radioembolization is a treatment option for tumors that cannot be removed by surgery or other radiation therapies, for liver cancer that is confined to the liver, or for liver cancer patients that have more than 3 months of life expectancy.

To perform radioembolization, a catheter is inserted into an artery in the groin and threaded to the liver. Radioactive beads, or pellets, are delivered through the catheter. The pellets will continuously deliver radiation for 10-14 days. The pellets will remain in the body permanently without causing any complications. If the tumor or cancer is confined to one portion of the liver, radioembolization will be performed in one treatment session. If both sides of the liver are affected, a second treatment session will be done about 8 weeks after the first.

Typically, most patients can return home and do light activity within hours following the procedure. Patients will be given medication to treat any possible side effects, which can include nausea, fever, abdominal pain, or tiredness.

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

Volume of procedures performed by Dr. Kenneth L. Zeitzer, MD for Medicare patients.

doctor visit	332

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

Volume of procedures performed by Dr. Kenneth L. Zeitzer, MD for Medicare patients.

doctor visit	435

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Kenneth L. Zeitzer, MD.

**Gender**
Male	144
Female	46

**Ethnicity**
Non-Hispanic White	91
Black	83
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	77
From 75 to 84	59
85 and over	32
Less than 65	22

Conditions of Medicare patients treated by Dr. Kenneth L. Zeitzer, MD in 2013

Hypertension	75
High Cholesterol	60
Stroke	0
Ischemic Heart Disease	38
Depression	13
Chronic Kidney Disease	28
Asthma	7
Osteoperosis	0
Atrial Fibrilation	12
Heart Failure	23
Chronic Obstructive Pulmonary Disease	27
Diabetes	40
Dementia	10
Cancer	73

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

Volume of procedures performed by Dr. Kenneth L. Zeitzer, MD for Medicare patients.

doctor visit	357

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Kenneth L. Zeitzer, MD.

**Gender**
Male	125
Female	32

**Ethnicity**
Non-Hispanic White	78
Black	65
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	66
From 75 to 84	49
85 and over	23
Less than 65	19

Conditions of Medicare patients treated by Dr. Kenneth L. Zeitzer, MD in 2014

Hypertension	75
High Cholesterol	58
Stroke	0
Ischemic Heart Disease	41
Depression	14
Chronic Kidney Disease	30
Asthma	0
Osteoperosis	0
Atrial Fibrilation	11
Heart Failure	18
Chronic Obstructive Pulmonary Disease	24
Diabetes	39
Dementia	9
Cancer	70

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

Volume of procedures performed by Dr. Kenneth L. Zeitzer, MD for Medicare patients.

doctor visit	401

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Kenneth L. Zeitzer, MD.

**Gender**
Male	252
Female	78

**Ethnicity**
Non-Hispanic White	164
Black	140
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	154
From 75 to 84	102
85 and over	40
Less than 65	34

Conditions of Medicare patients treated by Dr. Kenneth L. Zeitzer, MD in 2015

Hypertension	75
High Cholesterol	65
Stroke	9
Ischemic Heart Disease	44
Depression	20
Chronic Kidney Disease	38
Asthma	18
Osteoperosis	0
Atrial Fibrilation	13
Heart Failure	26
Chronic Obstructive Pulmonary Disease	34
Diabetes	41
Dementia	10
Cancer	67

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

Volume of procedures performed by Dr. Kenneth L. Zeitzer, MD for Medicare patients.

doctor visit	333

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Kenneth L. Zeitzer, MD.

**Gender**
Male	113
Female	63

**Ethnicity**
Non-Hispanic White	98
Black	66
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	69
From 75 to 84	56
85 and over	28
Less than 65	23

Conditions of Medicare patients treated by Dr. Kenneth L. Zeitzer, MD in 2016

Hypertension	75
High Cholesterol	61
Stroke	7
Ischemic Heart Disease	51
Depression	23
Chronic Kidney Disease	46
Asthma	29
Osteoperosis	7
Atrial Fibrilation	11
Heart Failure	20
Chronic Obstructive Pulmonary Disease	32
Diabetes	40
Dementia	10
Cancer	71

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

Volume of procedures performed by Dr. Kenneth L. Zeitzer, MD for Medicare patients.

doctor visit	401

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Kenneth L. Zeitzer, MD.

**Gender**
Male	112
Female	64

**Ethnicity**
Non-Hispanic White	89
Black	71
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	73
From 75 to 84	57
85 and over	26
Less than 65	20

Conditions of Medicare patients treated by Dr. Kenneth L. Zeitzer, MD in 2017

Hypertension	75
High Cholesterol	52
Stroke	9
Ischemic Heart Disease	48
Depression	23
Chronic Kidney Disease	47
Asthma	6
Osteoperosis	0
Atrial Fibrilation	9
Heart Failure	18
Chronic Obstructive Pulmonary Disease	27
Diabetes	44
Dementia	9
Cancer	75

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Kenneth L. Zeitzer, MD treated as a radiation oncologist in Philadelphia, PA during 2018 were radiation therapy.

Volume of procedures performed by Dr. Kenneth L. Zeitzer, MD for Medicare patients.

doctor visit	366
radiation therapy	16

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Kenneth L. Zeitzer, MD.

**Gender**
Male	97
Female	62

**Ethnicity**
Non-Hispanic White	88
Black	57
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	68
From 75 to 84	56
85 and over	20
Less than 65	15

Conditions of Medicare patients treated by Dr. Kenneth L. Zeitzer, MD in 2018

Hypertension	75
High Cholesterol	69
Stroke	10
Ischemic Heart Disease	54
Depression	21
Chronic Kidney Disease	44
Asthma	7
Osteoperosis	10
Atrial Fibrilation	10
Heart Failure	23
Chronic Obstructive Pulmonary Disease	30
Diabetes	37
Dementia	14
Cancer	71

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Kenneth L. Zeitzer, MD treated as a radiation oncologist in Philadelphia, PA during 2019 were radiation therapy.

Volume of procedures performed by Dr. Kenneth L. Zeitzer, MD for Medicare patients.

doctor visit	390
radiation therapy	20

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Kenneth L. Zeitzer, MD.

**Gender**
Male	100
Female	82

**Ethnicity**
Non-Hispanic White	99
Black	70
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	73
From 75 to 84	64
85 and over	18
Less than 65	27

Conditions of Medicare patients treated by Dr. Kenneth L. Zeitzer, MD in 2019

Hypertension	75
High Cholesterol	66
Stroke	15
Ischemic Heart Disease	55
Depression	26
Chronic Kidney Disease	45
Asthma	0
Osteoperosis	7
Atrial Fibrilation	12
Heart Failure	26
Chronic Obstructive Pulmonary Disease	34
Diabetes	37
Dementia	15
Cancer	71

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

Volume of procedures performed by Dr. Kenneth L. Zeitzer, MD for Medicare patients.

doctor visit	323

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Kenneth L. Zeitzer, MD.

**Gender**
Male	95
Female	94

**Ethnicity**
Non-Hispanic White	114
Black	64
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	82
From 75 to 84	63
85 and over	20
Less than 65	24

Conditions of Medicare patients treated by Dr. Kenneth L. Zeitzer, MD in 2020

Hypertension	75
High Cholesterol	63
Stroke	10
Ischemic Heart Disease	55
Depression	18
Chronic Kidney Disease	42
Asthma	0
Osteoperosis	12
Atrial Fibrilation	11
Heart Failure	17
Chronic Obstructive Pulmonary Disease	27
Diabetes	39
Dementia	7
Cancer	75

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

Volume of procedures performed by Dr. Kenneth L. Zeitzer, MD for Medicare patients.

doctor visit	431

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Kenneth L. Zeitzer, MD.

**Gender**
Male	82
Female	113

**Ethnicity**
Non-Hispanic White	115
Black	60
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	91
From 75 to 84	60
85 and over	19
Less than 65	25

Conditions of Medicare patients treated by Dr. Kenneth L. Zeitzer, MD in 2021

Hypertension	74
High Cholesterol	63
Stroke	7
Ischemic Heart Disease	54
Depression	17
Chronic Kidney Disease	42
Asthma	6
Osteoperosis	12
Atrial Fibrilation	10
Heart Failure	14
Chronic Obstructive Pulmonary Disease	26
Diabetes	32
Dementia	8
Cancer	75

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

Volume of procedures performed by Dr. Kenneth L. Zeitzer, MD for Medicare patients.

doctor visit	281

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Kenneth L. Zeitzer, MD.

**Gender**
Male	67
Female	73

**Ethnicity**
Non-Hispanic White	84
Black	45
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	70
From 75 to 84	44
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Kenneth L. Zeitzer, MD in 2022

Hypertension	75
High Cholesterol	74
Stroke	13
Ischemic Heart Disease	44
Depression	16
Chronic Kidney Disease	30
Asthma	0
Osteoperosis	14
Atrial Fibrilation	15
Heart Failure	16
Chronic Obstructive Pulmonary Disease	37
Diabetes	39
Dementia	11
Cancer	75

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. Kenneth L. Zeitzer, MD for Medicare patients.

The highest averages for the top procedures that Dr. Kenneth L. Zeitzer, MD treated as a radiation oncologist in Philadelphia, PA were radiation therapy.

doctor visit	368
radiation therapy	18

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. Kenneth L. Zeitzer, MD.

**Gender**
Female	64
Male	107

**Ethnicity**
Black / African American	65
Asian / Pacific Islander	0
Non-Hispanic White	92
Native American / Alaskan Native	0
Hispanic	0
Other	0

**Age**
85 and over	20
75 to 84	55
Less than 65	19
65 to 74	74

Average of Total of Conditions of Medicare patients treated by Dr. Kenneth L. Zeitzer, MD From 2012 - 2022

The highest averages of the most common conditions of Medicare patients that Dr. Kenneth L. Zeitzer, MD treated were hypertension, cancer, high cholesterol and ischemic heart disease.

Hypertension	68
High Cholesterol	57
Stroke	7
Ischemic Heart Disease	44
Depression	17
Chronic Kidney Disease	35
Asthma	6
Osteoporosis	5
Heart Failure	18
Chronic Obstructive Pulmonary Disease	27
Diabetes	35
Atrial Fibrillation	10
Dementia	9
Cancer	65

Education & Training

Dr. Kenneth L. Zeitzer, MD graduated from Thomas Jefferson University, Jefferson Medical College. He completed residency at Jefferson Medical College Affiliated Hospitals. He is certified by the Board Certification: Radiation Oncology and has a state license in Pennsylvania.

Medical School: Thomas Jefferson University, Jefferson Medical College

Residency: Jefferson Medical College Affiliated Hospitals (1989)

Board Certification: Board Certification: Radiation Oncology

Licensed In: Pennsylvania

Affiliations & Hospitals

Dr. Kenneth L. Zeitzer, MD is associated with these hospitals and organizations:

Jefferson Health

Jefferson Einstein Philadelphia Hospital

Jefferson Einstein Montgomery Hospital

Insurance Information

Please note: Insurance information may change at any time, and the provider may accept your insurance plan even if it is not listed below. Please contact the provider's office to confirm that your insurance is accepted.

Dr. Kenneth L. Zeitzer, MD appears to accept the following insurance providers: Medicaid, Devon Health, Aetna Medicare, MultiPlan, TRICARE and First Health.

Insurance Accepted by Provider includes:

According to our sources, Dr. Kenneth L. Zeitzer, MD accepts the following insurance providers:

Medicaid

Devon Health

Aetna Medicare

MultiPlan

TRICARE

First Health

Ratings & Reviews

Dr. Kenneth L. Zeitzer, MD has an exceptional overall rating with an average of 4.96 out of 5 stars based on 160 ratings. We collect ratings and reviews of Dr. Kenneth L. Zeitzer, MD from all over the web to help you find the right in Philadelphia, PA.

4.96

Overall Rating

(160 Ratings)

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General Payments

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

**Payments by Company**
Varian Medical Systems, Inc.	$134 $134
Palette Life Sciences, Inc.	$51 $51
Puma Biotechnology, Inc.	$34 Nerlynx $34
Boston Scientific Corporation	$28 SpaceOAR VUE System - 10mL $28
EISAI INC.	$19 Halaven $19

**Types of Payments**
Food and Beverage	$265

Research Payments

Dr. Kenneth L. Zeitzer, MD has received 2 research payments totaling $2,250.

Biography

Dr. Kenneth Zeitzer is a radiation oncology specialist. His areas of expertise include the following: bladder cancer, radioembolization (selective internal radiation therapy), and intensity-modulated radiation therapy (IMRT). Patient reviews placed him at an average of 5.0 stars (out of 5). Dr. Zeitzer seems to honor several insurance carriers, including Aetna Medicare, MultiPlan, and Coventry. He attended medical school at Thomas Jefferson University, Jefferson Medical College. He trained at Jefferson University Hospitals, Albert Einstein Medical Center, Philadelphia, and a hospital affiliated with Jefferson Medical College for residency. Dr. Zeitzer is professionally affiliated with Jefferson Health. According to Jefferson Health, new patients are welcome to contact Dr. Zeitzer's office in East Norriton, PA.