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Dr. Lee William Greenspon, MD

(No ratings)

Specializes in: Adult Pulmonology and Adult Critical Care
Temple University School of Medicine
Professional interests include: emphysema, asthma, chronic obstructive pulmonary disease (COPD), and more.
100 East Lancaster Avenue Medical Office Building West, Suite 230
Wynnewood, PA 19096

Dr. Lee William Greenspon, MD is a pulmonologist in Wynnewood, PA specializing in adult pulmonology and adult critical care. He graduated from Temple University School of Medicine. Dr. Lee William Greenspon, MD is affiliated with Main Line Health.

View Doctor's Full Profile (610) 642-3796

Office Locations

100 East Lancaster Avenue Medical Office Building West, Suite 230
Wynnewood, PA 19096
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Some issues Dr. Lee William Greenspon, MD can help you with:

Asthma

Asthma is a chronic lung disease where the tissue and airways of the lungs become extremely sensitive to certain substances. When these substances are breathed in, the lungs become inflamed. The muscles around the airways tighten and squeeze the lungs, and passages within the lungs swell and tighten. The airways themselves produce mucus, which further clogs the tightened, swollen airways. A person having an asthma attack finds it very difficult to breathe, and a severe attack can even be fatal.

Asthma affects people of all ages, but people with asthma are most often diagnosed as children. Symptoms can include wheezing, a tight feeling in the chest, shortness of breath, and coughing. Some people have mild symptoms all the time, and some people have no symptoms at all, but everyone with asthma is susceptible to occasional severe attacks or flare-ups of symptoms when they are exposed to triggers. Triggers vary widely but can include:

  • Allergens (dust mites, pet fur, mold, pollen, grass)
  • Irritants (smoke, pollution, dust, chemicals)
  • Viral infections
  • Physical activity, especially outdoors
  • Certain medications or chemicals in foods (aspirin, sulfites)

Treatment for most asthma patients involves three steps. Patients learn what their asthma triggers are and avoid them. They take a daily control medication, usually an inhaled corticosteroid, to reduce inflammation in the lungs. Also, they have rescue medication with them at all times to take in case of a severe attack. These quick-acting inhaled medications relax the muscles around the airways and allow the lungs to open up for air.

There is no cure for asthma, but with treatment it should not interfere with daily life and activities.

Sleep Study

A sleep study reveals important insights about a patient's sleep patterns by measuring brain activity, breathing, and movement. There are five types of sleep studies: a polysomnogram, titration sleep study, split night sleep study, multiple sleep latency test, and at-home sleep study. Sleep studies may help identify conditions such as:

  • Insomnia
  • Sleep apnea
  • Restless legs syndrome
  • Sleep walking
  • REM sleep behavior disorder
  • Narcolepsy

The most widely performed sleep test is the traditional polysomnogram (PSG). This test is typically used to determine whether patients have sleep apnea (lapses in breathing while asleep). Polysomnograms are conducted overnight in a specialized sleep clinic or sleep center, where a patient enters the sleep center and is assigned to a room with a bed, medical equipment, and monitoring system. An overnight sleep technician attaches electrodes to the patient's head, chest, and legs. This application process lasts for around an hour. A sleep technician watches and evaluates the patient as they sleep. Objects such as a comfortable pillow from home, toiletries, and small personal items may be helpful in easing patients into sleep in unfamiliar surroundings.

Patients receive their physician-interpreted sleep study results within a few weeks of the test. If sleep apnea is detected, patients may be asked to return for a titration sleep study. A titration study involves the same procedures and electrode placement of a polysomnogram, but also includes a mask attached to a CPAP (continuous positive airway pressure) machine. The CPAP machine brings pressurized air to the patient. The technician may monitor and adjust the CPAP's air pressure throughout the night. The purpose of a titration study is to determine the appropriate air pressure for patients with obstructive sleep apnea (blocked upper airway).

A split night study combines the polysomnogram and titration sleep studies into two sessions on the same night. Split night studies enable patients to complete both studies quickly instead of waiting weeks in between tests and may expedite the interpretation of results and treatment.

Multiple sleep latency test (MSLT) measures how fast someone is able to fall asleep. Unlike other sleep tests, this test is performed during the day. It may take place after an overnight sleep study. The MSLT test monitors napping and potential for daytime sleepiness and exhaustion.

At-home sleep tests are fully conducted by patients in their own homes. Patients attach fewer electrodes, a breathing sensor, a microphone, and a data collection device to themselves and sleep in their own beds. The following morning, patients gather the data collection device and return it to their medical providers. While at-home sleep tests are convenient, they are not recommended for patients with severe sleep problems. At-home sleep tests are less precise than clinical tests and do not measure brain activity.

Sleep studies are essential to helping patients receive accurate sleep disorder diagnoses and proper treatment. A sleep study can be the first step towards higher quality sleep and physical health.

In The News 

“"He wasn't just a lung specialist," said Lee Greenspon, a pulmonologist at Lankenau Hospital. "”—"Doctor dedicated to lung-cancer fight", Philadelphia Inquirer, March 2007

Noteworthy Medicare Patient Procedures Performed by Dr. Lee William Greenspon, MD in 2024

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

Top 5%

By Affordability:

cancer prevention

In 2024, Dr. Lee William Greenspon, MD had a list price for cancer prevention that was lower than the list prices billed to Medicare by 95% of providers in related specialties within Pennsylvania. 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 10%

By Affordability:

counseling services
lung cancer screening counseling
preventive care

In 2024, Dr. Lee William Greenspon, MD had a list price for counseling services, lung cancer screening counseling, and preventive care that was lower than the list prices billed to Medicare by 90% of providers in related specialties within Pennsylvania. 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. Lee William Greenspon, MD treated as a pulmonologist in Wynnewood, PA during 2012 were hospital care, inpatient care, pulmonary testing and bronchoscopy.

Volume of procedures performed by Dr. Lee William Greenspon, MD for Medicare patients.

aspiration 13
bronchoscopy 13
doctor visit 605
hospital care 719
inpatient care 719
pulmonary testing 48

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Lee William Greenspon, MD treated as a pulmonologist in Wynnewood, PA during 2013 were hospital care, inpatient care, pulmonary testing and preventive care.

Volume of procedures performed by Dr. Lee William Greenspon, MD for Medicare patients.

bronchoscopy 13
doctor visit 620
hospital care 897
inpatient care 897
minimally invasive procedures 13
preventive care 16
pulmonary testing 19
vaccines 16

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Lee William Greenspon, MD.

Gender
Male 321
Female 375
Ethnicity
Non-Hispanic White 511
Black 164
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 219
From 75 to 84 246
85 and over 151
Less than 65 80

Conditions of Medicare patients treated by Dr. Lee William Greenspon, MD in 2013

Hypertension 75
High Cholesterol 70
Stroke 11
Ischemic Heart Disease 63
Depression 33
Chronic Kidney Disease 47
Asthma 27
Osteoperosis 15
Atrial Fibrilation 26
Heart Failure 52
Chronic Obstructive Pulmonary Disease 55
Diabetes 41
Dementia 22
Cancer 21

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Lee William Greenspon, MD treated as a pulmonologist in Wynnewood, PA during 2014 were hospital care, inpatient care, pulmonary testing and preventive care.

Volume of procedures performed by Dr. Lee William Greenspon, MD for Medicare patients.

bronchoscopy 11
doctor visit 606
hospital care 711
inpatient care 711
minimally invasive procedures 11
preventive care 13
pulmonary testing 62
vaccines 13

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Lee William Greenspon, MD.

Gender
Male 320
Female 411
Ethnicity
Non-Hispanic White 522
Black 185
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 252
From 75 to 84 239
85 and over 138
Less than 65 102

Conditions of Medicare patients treated by Dr. Lee William Greenspon, MD in 2014

Hypertension 75
High Cholesterol 70
Stroke 11
Ischemic Heart Disease 60
Depression 31
Chronic Kidney Disease 47
Asthma 26
Osteoperosis 14
Atrial Fibrilation 28
Heart Failure 52
Chronic Obstructive Pulmonary Disease 50
Diabetes 41
Dementia 21
Cancer 22

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Lee William Greenspon, MD treated as a pulmonologist in Wynnewood, PA during 2015 were hospital care, inpatient care, pulmonary testing and bronchoscopy.

Volume of procedures performed by Dr. Lee William Greenspon, MD for Medicare patients.

aspiration 15
bronchoscopy 15
doctor visit 679
hospital care 755
inpatient care 755
preventive care 14
pulmonary testing 55
vaccines 14

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Lee William Greenspon, MD.

Gender
Male 636
Female 874
Ethnicity
Non-Hispanic White 1102
Black 360
Hispanic 0
Asian 0
Other 24
Native American 0
Age
From 65 to 74 516
From 75 to 84 514
85 and over 294
Less than 65 186

Conditions of Medicare patients treated by Dr. Lee William Greenspon, MD in 2015

Hypertension 75
High Cholesterol 72
Stroke 14
Ischemic Heart Disease 62
Depression 33
Chronic Kidney Disease 48
Asthma 39
Osteoperosis 13
Atrial Fibrilation 27
Heart Failure 49
Chronic Obstructive Pulmonary Disease 53
Diabetes 39
Dementia 23
Cancer 22

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Lee William Greenspon, MD treated as a pulmonologist in Wynnewood, PA during 2016 were hospital care, inpatient care, pulmonary testing and bronchoscopy.

Volume of procedures performed by Dr. Lee William Greenspon, MD for Medicare patients.

aspiration 22
bronchoscopy 36
doctor visit 705
hospital care 976
inpatient care 976
minimally invasive procedures 14
pulmonary testing 99

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Lee William Greenspon, MD.

Gender
Male 346
Female 458
Ethnicity
Non-Hispanic White 564
Black 208
Hispanic 0
Asian 0
Other 14
Native American 0
Age
From 65 to 74 288
From 75 to 84 256
85 and over 163
Less than 65 97

Conditions of Medicare patients treated by Dr. Lee William Greenspon, MD in 2016

Hypertension 75
High Cholesterol 71
Stroke 12
Ischemic Heart Disease 62
Depression 35
Chronic Kidney Disease 53
Asthma 56
Osteoperosis 12
Atrial Fibrilation 28
Heart Failure 48
Chronic Obstructive Pulmonary Disease 53
Diabetes 39
Dementia 30
Cancer 22

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Lee William Greenspon, MD treated as a pulmonologist in Wynnewood, PA during 2017 were hospital care, inpatient care, pulmonary testing and bronchoscopy.

Volume of procedures performed by Dr. Lee William Greenspon, MD for Medicare patients.

bronchoscopy 15
doctor visit 749
hospital care 583
inpatient care 583
minimally invasive procedures 15
pulmonary testing 104

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Lee William Greenspon, MD.

Gender
Male 355
Female 421
Ethnicity
Non-Hispanic White 556
Black 188
Hispanic 0
Asian 0
Other 19
Native American 0
Age
From 65 to 74 296
From 75 to 84 275
85 and over 127
Less than 65 78

Conditions of Medicare patients treated by Dr. Lee William Greenspon, MD in 2017

Hypertension 75
High Cholesterol 70
Stroke 11
Ischemic Heart Disease 65
Depression 37
Chronic Kidney Disease 52
Asthma 24
Osteoperosis 12
Atrial Fibrilation 27
Heart Failure 50
Chronic Obstructive Pulmonary Disease 53
Diabetes 37
Dementia 28
Cancer 19

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Lee William Greenspon, MD treated as a pulmonologist in Wynnewood, PA during 2018 were hospital care, inpatient care, pulmonary testing and pleural drainage.

Volume of procedures performed by Dr. Lee William Greenspon, MD for Medicare patients.

aspiration 17
doctor visit 726
hospital care 728
inpatient care 728
pleural drainage 17
pulmonary testing 69

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Lee William Greenspon, MD.

Gender
Male 320
Female 429
Ethnicity
Non-Hispanic White 539
Black 182
Hispanic 0
Asian 0
Other 16
Native American 0
Age
From 65 to 74 283
From 75 to 84 265
85 and over 113
Less than 65 88

Conditions of Medicare patients treated by Dr. Lee William Greenspon, MD in 2018

Hypertension 75
High Cholesterol 70
Stroke 9
Ischemic Heart Disease 62
Depression 36
Chronic Kidney Disease 51
Asthma 26
Osteoperosis 13
Atrial Fibrilation 27
Heart Failure 47
Chronic Obstructive Pulmonary Disease 50
Diabetes 39
Dementia 23
Cancer 19

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Lee William Greenspon, MD treated as a pulmonologist in Wynnewood, PA during 2019 were hospital care, inpatient care and pulmonary testing.

Volume of procedures performed by Dr. Lee William Greenspon, MD for Medicare patients.

doctor visit 723
hospital care 551
inpatient care 551
pulmonary testing 70

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Lee William Greenspon, MD.

Gender
Male 300
Female 398
Ethnicity
Non-Hispanic White 503
Black 169
Hispanic 0
Asian 0
Other 14
Native American 0
Age
From 65 to 74 224
From 75 to 84 273
85 and over 126
Less than 65 75

Conditions of Medicare patients treated by Dr. Lee William Greenspon, MD in 2019

Hypertension 75
High Cholesterol 73
Stroke 10
Ischemic Heart Disease 63
Depression 38
Chronic Kidney Disease 51
Asthma 25
Osteoperosis 14
Atrial Fibrilation 30
Heart Failure 46
Chronic Obstructive Pulmonary Disease 54
Diabetes 36
Dementia 21
Cancer 22

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Lee William Greenspon, MD treated as a pulmonologist in Wynnewood, PA during 2020 were hospital care, inpatient care and pulmonary testing.

Volume of procedures performed by Dr. Lee William Greenspon, MD for Medicare patients.

doctor visit 630
hospital care 281
inpatient care 281
pulmonary testing 88

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Lee William Greenspon, MD.

Gender
Male 256
Female 419
Ethnicity
Non-Hispanic White 495
Black 153
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 279
From 75 to 84 248
85 and over 80
Less than 65 68

Conditions of Medicare patients treated by Dr. Lee William Greenspon, MD in 2020

Hypertension 74
High Cholesterol 72
Stroke 7
Ischemic Heart Disease 55
Depression 32
Chronic Kidney Disease 42
Asthma 25
Osteoperosis 16
Atrial Fibrilation 18
Heart Failure 38
Chronic Obstructive Pulmonary Disease 49
Diabetes 32
Dementia 15
Cancer 21

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Lee William Greenspon, MD treated as a pulmonologist in Wynnewood, PA during 2021 were hospital care, inpatient care, pulmonary testing and counseling services.

Volume of procedures performed by Dr. Lee William Greenspon, MD for Medicare patients.

counseling services 19
doctor visit 702
hospital care 311
inpatient care 311
preventive care 19
pulmonary testing 130

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Lee William Greenspon, MD.

Gender
Male 246
Female 396
Ethnicity
Non-Hispanic White 482
Black 126
Hispanic 0
Asian 0
Other 22
Native American 0
Age
From 65 to 74 249
From 75 to 84 248
85 and over 99
Less than 65 46

Conditions of Medicare patients treated by Dr. Lee William Greenspon, MD in 2021

Hypertension 75
High Cholesterol 74
Stroke 6
Ischemic Heart Disease 62
Depression 29
Chronic Kidney Disease 50
Asthma 27
Osteoperosis 19
Atrial Fibrilation 24
Heart Failure 40
Chronic Obstructive Pulmonary Disease 48
Diabetes 36
Dementia 13
Cancer 19

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Lee William Greenspon, MD treated as a pulmonologist in Wynnewood, PA during 2022 were hospital care, inpatient care, pulmonary testing and counseling services.

Volume of procedures performed by Dr. Lee William Greenspon, MD for Medicare patients.

counseling services 22
doctor visit 623
hospital care 287
inpatient care 287
preventive care 22
pulmonary testing 78

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Lee William Greenspon, MD.

Gender
Male 235
Female 324
Ethnicity
Non-Hispanic White 417
Black 113
Hispanic 0
Asian 0
Other 18
Native American 0
Age
From 65 to 74 218
From 75 to 84 230
85 and over 79
Less than 65 32

Conditions of Medicare patients treated by Dr. Lee William Greenspon, MD in 2022

Hypertension 75
High Cholesterol 75
Stroke 13
Ischemic Heart Disease 53
Depression 25
Chronic Kidney Disease 34
Asthma 31
Osteoperosis 20
Atrial Fibrilation 30
Heart Failure 37
Chronic Obstructive Pulmonary Disease 54
Diabetes 33
Dementia 9
Cancer 26

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

The top procedures that Dr. Lee William Greenspon, MD treated as a pulmonologist in Wynnewood, PA during 2023 were hospital care, inpatient care, pulmonary testing and counseling services.

Volume of procedures performed by Dr. Lee William Greenspon, MD for Medicare patients.

counseling services 25
doctor visit 581
hospital care 141
inpatient care 141
preventive care 25
pulmonary testing 28

2023 Medicare Patient Data

Information about Medicare patients treated by Dr. Lee William Greenspon, MD.

Gender
Male 184
Female 278
Ethnicity
Non-Hispanic White 350
Black 88
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 167
From 75 to 84 197
85 and over 71
Less than 65 27

Conditions of Medicare patients treated by Dr. Lee William Greenspon, MD in 2023

Hypertension 75
High Cholesterol 75
Stroke 13
Ischemic Heart Disease 52
Depression 23
Chronic Kidney Disease 37
Asthma 37
Osteoperosis 22
Atrial Fibrilation 32
Heart Failure 33
Chronic Obstructive Pulmonary Disease 56
Diabetes 32
Dementia 9
Cancer 25

Medicare Procedure and Patient Information

2024 Medicare Procedure Volume

The top procedures that Dr. Lee William Greenspon, MD treated as a pulmonologist in Wynnewood, PA during 2024 were counseling services and preventive care.

Volume of procedures performed by Dr. Lee William Greenspon, MD for Medicare patients.

counseling services 18
doctor visit 267
preventive care 18

2024 Medicare Patient Data

Information about Medicare patients treated by Dr. Lee William Greenspon, MD.

Gender
Male 92
Female 124
Ethnicity
Non-Hispanic White 165
Black 40
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 81
From 75 to 84 95
85 and over 28
Less than 65 12

Conditions of Medicare patients treated by Dr. Lee William Greenspon, MD in 2024

Hypertension 75
High Cholesterol 75
Stroke 12
Ischemic Heart Disease 51
Depression 21
Chronic Kidney Disease 31
Asthma 37
Osteoperosis 23
Atrial Fibrilation 26
Heart Failure 31
Chronic Obstructive Pulmonary Disease 53
Diabetes 28
Dementia 6
Cancer 25

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2024

Volume of procedures performed by Dr. Lee William Greenspon, MD for Medicare patients.

The highest averages for the top procedures that Dr. Lee William Greenspon, MD treated as a pulmonologist in Wynnewood, PA were hospital care, inpatient care, pulmonary testing and counseling services.

aspiration 16
bronchoscopy 17
counseling services 21
doctor visit 632
hospital care 578
inpatient care 578
minimally invasive procedures 13
pleural drainage 17
preventive care 18
pulmonary testing 70
vaccines 14

Average Medicare Patient Data From 2012 - 2024

Information about Medicare patients treated by Dr. Lee William Greenspon, MD.

Gender
Female 377
Male 277
Ethnicity
Black / African American 152
Asian / Pacific Islander 0
Non-Hispanic White 477
Native American / Alaskan Native 0
Hispanic 0
Other 9
Age
75 to 84 237
85 and over 113
Less than 65 68
65 to 74 236

Average of Total of Conditions of Medicare patients treated by Dr. Lee William Greenspon, MD From 2012 - 2024

The highest averages of the most common conditions of Medicare patients that Dr. Lee William Greenspon, MD treated were hypertension, high cholesterol, ischemic heart disease and chronic obstructive pulmonary disease.

Hypertension 69
High Cholesterol 66
Stroke 9
Ischemic Heart Disease 54
Depression 28
Chronic Kidney Disease 41
Asthma 29
Osteoporosis 14
Heart Failure 40
Chronic Obstructive Pulmonary Disease 48
Diabetes 33
Atrial Fibrillation 24
Dementia 16
Cancer 20

Education & Training

Dr. Lee William Greenspon, MD graduated from Temple University School of Medicine. He completed residency at Medical College of Pennsylvania Hospital. He has a state license in Pennsylvania.

Medical School: Temple University School of Medicine

Residency: Medical College of Pennsylvania Hospital

Licensed In: Pennsylvania

Affiliations & Hospitals

Dr. Lee William Greenspon, MD is associated with these hospitals and organizations:

Main Line Health

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General Payments

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

Payments by Company
EKOS Corporation $3,092 EKOSONIC
$3,092
AstraZeneca Pharmaceuticals LP $1,937 FASENRA
$651 		SYMBICORT
$525 		BEVESPI AEROSPHERE
$341 		BREZTRI
$251 		TEZSPIRE
$110 		Other
$60
Boehringer Ingelheim Pharmaceuticals, Inc. $1,186 OFEV
$528 		SPIRIVA RESPIMAT
$266 		STIOLTO RESPIMAT
$116 		COMBIVENT RESPIMAT
$73 		STIOLTO
$38 		Other
$165
GlaxoSmithKline, LLC. $1,124 NUCALA
$578 		TRELEGY ELLIPTA
$301 		AREXVY
$102 		BREO
$60 		ANORO
$50 		Other
$33
Genentech USA, Inc. $449 Esbriet
$280 		XOLAIR
$138
$31
Other $2,996 DUPIXENT
$462 		Arikayce
$264 		Yupelri
$139 		Perforomist
$135 		Abraxane
$113 		Other
$1,883
Types of Payments
Food and Beverage $7,800
Consulting Fee $2,000
Travel and Lodging $885
Education $99

Research Payments

Dr. Lee William Greenspon, MD has received 54 research payments totaling $114,396.

Biography

Dr. Lee Greenspon sees patients in Wynnewood, PA. His medical specialties are adult critical care and adult pulmonology. Areas of expertise for Dr. Greenspon include sleep study, lung cancer, and cystic fibrosis (CF). He is affiliated with Main Line Health. After completing medical school at Temple University School of Medicine, Dr. Greenspon performed his residency at Medical College of Pennsylvania Hospital.