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Dr. Lynn Van Ummersen, MD

Accepting New Patients

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Specializes in: Medical Oncology, Adult Oncology and Hematology (Blood Disorders)

University of Massachusetts Medical School

2824 Enterprise Road
Orange City, FL 32763

(386) 774-7411

Dr. Lynn Van Ummersen, MD is a medical oncologist in Orange City, FL specializing in medical oncology, adult oncology and hematology (blood disorders). She graduated from University of Massachusetts Medical School. Dr. Lynn Van Ummersen, MD is affiliated with Orlando Health, Florida Cancer Specialists & Research Institute and Halifax Health.

Office Locations

Orlando Health

2824 Enterprise Road
Orange City, FL 32763

(386) 774-7411

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805 Currency Circle
Lake Mary, FL 32746

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1041 Dunlawton Avenue
Port Orange, FL 32127

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303 N. Clyde Morris Boulevard
Daytona Beach, FL 32114

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805 Currency Circle Lake
Mary, FL 32746

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Noteworthy Medicare Patient Procedures Performed by Dr. Lynn Van Ummersen, MD in 2023

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

Top 5%

By Affordability:

blood draw

blood draw for lab tests

phlebotomy for lab tests

venipuncture

In 2023, Dr. Lynn Van Ummersen, MD had a list price for blood draw, blood draw for lab tests, phlebotomy for lab tests, and venipuncture (phlebotomy) that was lower than the list prices billed to Medicare by 95% of providers in related specialties within Florida. 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:

lab tests

In 2023, Dr. Lynn Van Ummersen, MD had a list price for lab tests that was lower than the list prices billed to Medicare by 90% of providers in related specialties within Florida. 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:

complete blood count

hospital care

inpatient care

inpatient hospital care

intravenous infusion therapy

In 2012, Dr. Lynn Van Ummersen, MD had a list price for complete blood count (CBC), hospital care, inpatient care, inpatient hospital care (for patient admitted to hospital), and intravenous infusion therapy that was lower than the list prices billed to Medicare by 75% of providers in related specialties within Florida. 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. Lynn Van Ummersen, MD treated as a medical oncologist in Orange City, FL during 2012 were lab tests, blood draw, hospital care and inpatient care.

Volume of procedures performed by Dr. Lynn Van Ummersen, MD for Medicare patients.

biological response modifier (BRM) therapy	53
blood draw	585
chemotherapy	53
doctor visit	567
hospital care	260
inpatient care	260
lab tests	1605
minimally invasive procedures	169
port flush	28
thyroid function tests	12

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Lynn Van Ummersen, MD treated as a medical oncologist in Orange City, FL during 2013 were lab tests, blood draw, hospital care and inpatient care.

Volume of procedures performed by Dr. Lynn Van Ummersen, MD for Medicare patients.

biological response modifier (BRM) therapy	79
blood draw	548
chemotherapy	79
doctor visit	544
hospital care	289
inpatient care	289
lab tests	1692
minimally invasive procedures	195

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Lynn Van Ummersen, MD.

**Gender**
Male	127
Female	236

**Ethnicity**
Non-Hispanic White	270
Black	57
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	116
From 75 to 84	124
85 and over	64
Less than 65	59

Conditions of Medicare patients treated by Dr. Lynn Van Ummersen, MD in 2013

Hypertension	75
High Cholesterol	67
Stroke	11
Ischemic Heart Disease	52
Depression	31
Chronic Kidney Disease	55
Asthma	11
Osteoperosis	15
Atrial Fibrilation	18
Heart Failure	36
Chronic Obstructive Pulmonary Disease	38
Diabetes	49
Dementia	21
Cancer	31

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Lynn Van Ummersen, MD treated as a medical oncologist in Orange City, FL during 2014 were lab tests, blood draw, hospital care and inpatient care.

Volume of procedures performed by Dr. Lynn Van Ummersen, MD for Medicare patients.

biological response modifier (BRM) therapy	59
blood draw	551
chemotherapy	59
doctor visit	586
hospital care	257
inpatient care	257
lab tests	1943
minimally invasive procedures	185
thyroid function tests	12

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Lynn Van Ummersen, MD.

**Gender**
Male	145
Female	238

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

**Age**
From 65 to 74	136
From 75 to 84	126
85 and over	60
Less than 65	61

Conditions of Medicare patients treated by Dr. Lynn Van Ummersen, MD in 2014

Hypertension	75
High Cholesterol	64
Stroke	12
Ischemic Heart Disease	49
Depression	27
Chronic Kidney Disease	51
Asthma	9
Osteoperosis	14
Atrial Fibrilation	16
Heart Failure	33
Chronic Obstructive Pulmonary Disease	31
Diabetes	43
Dementia	15
Cancer	36

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Lynn Van Ummersen, MD treated as a medical oncologist in Orange City, FL during 2015 were lab tests, blood draw, hospital care and inpatient care.

Volume of procedures performed by Dr. Lynn Van Ummersen, MD for Medicare patients.

biological response modifier (BRM) therapy	50
blood draw	486
chemotherapy	50
doctor visit	558
hospital care	207
inpatient care	207
lab tests	1694
minimally invasive procedures	129
thyroid function tests	14

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Lynn Van Ummersen, MD.

**Gender**
Male	246
Female	498

**Ethnicity**
Non-Hispanic White	566
Black	90
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	278
From 75 to 84	218
85 and over	126
Less than 65	122

Conditions of Medicare patients treated by Dr. Lynn Van Ummersen, MD in 2015

Hypertension	75
High Cholesterol	67
Stroke	12
Ischemic Heart Disease	48
Depression	27
Chronic Kidney Disease	52
Asthma	19
Osteoperosis	16
Atrial Fibrilation	15
Heart Failure	35
Chronic Obstructive Pulmonary Disease	29
Diabetes	44
Dementia	17
Cancer	35

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Lynn Van Ummersen, MD treated as a medical oncologist in Orange City, FL during 2016 were lab tests, blood draw, hospital care and inpatient care.

Volume of procedures performed by Dr. Lynn Van Ummersen, MD for Medicare patients.

biological response modifier (BRM) therapy	97
blood draw	462
chemotherapy	97
doctor visit	525
hospital care	230
inpatient care	230
lab tests	1496
minimally invasive procedures	192

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Lynn Van Ummersen, MD.

**Gender**
Male	134
Female	242

**Ethnicity**
Non-Hispanic White	290
Black	42
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	146
From 75 to 84	109
85 and over	64
Less than 65	57

Conditions of Medicare patients treated by Dr. Lynn Van Ummersen, MD in 2016

Hypertension	75
High Cholesterol	68
Stroke	12
Ischemic Heart Disease	44
Depression	24
Chronic Kidney Disease	53
Asthma	30
Osteoperosis	10
Atrial Fibrilation	19
Heart Failure	34
Chronic Obstructive Pulmonary Disease	28
Diabetes	41
Dementia	19
Cancer	37

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Lynn Van Ummersen, MD treated as a medical oncologist in Orange City, FL during 2017 were lab tests, blood draw, minimally invasive procedures and hospital care.

Volume of procedures performed by Dr. Lynn Van Ummersen, MD for Medicare patients.

biological response modifier (BRM) therapy	98
blood draw	479
chemotherapy	98
doctor visit	535
hospital care	120
inpatient care	120
lab tests	1559
minimally invasive procedures	188

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Lynn Van Ummersen, MD.

**Gender**
Male	116
Female	227

**Ethnicity**
Non-Hispanic White	270
Black	37
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	145
From 75 to 84	103
85 and over	51
Less than 65	44

Conditions of Medicare patients treated by Dr. Lynn Van Ummersen, MD in 2017

Hypertension	75
High Cholesterol	65
Stroke	10
Ischemic Heart Disease	48
Depression	25
Chronic Kidney Disease	51
Asthma	11
Osteoperosis	13
Atrial Fibrilation	18
Heart Failure	31
Chronic Obstructive Pulmonary Disease	25
Diabetes	41
Dementia	19
Cancer	39

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Lynn Van Ummersen, MD treated as a medical oncologist in Orange City, FL during 2018 were lab tests, blood draw, hospital care and inpatient care.

Volume of procedures performed by Dr. Lynn Van Ummersen, MD for Medicare patients.

biological response modifier (BRM) therapy	79
blood draw	534
chemotherapy	79
doctor visit	527
hospital care	193
inpatient care	193
lab tests	1637
minimally invasive procedures	157

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Lynn Van Ummersen, MD.

**Gender**
Male	149
Female	264

**Ethnicity**
Non-Hispanic White	307
Black	46
Hispanic	49
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	162
From 75 to 84	129
85 and over	66
Less than 65	56

Conditions of Medicare patients treated by Dr. Lynn Van Ummersen, MD in 2018

Hypertension	75
High Cholesterol	71
Stroke	9
Ischemic Heart Disease	51
Depression	27
Chronic Kidney Disease	53
Asthma	9
Osteoperosis	13
Atrial Fibrilation	16
Heart Failure	29
Chronic Obstructive Pulmonary Disease	31
Diabetes	44
Dementia	19
Cancer	38

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Lynn Van Ummersen, MD treated as a medical oncologist in Orange City, FL during 2019 were lab tests, blood draw, minimally invasive procedures and hospital care.

Volume of procedures performed by Dr. Lynn Van Ummersen, MD for Medicare patients.

biological response modifier (BRM) therapy	60
blood draw	535
chemotherapy	60
doctor visit	493
hospital care	122
inpatient care	122
lab tests	1598
minimally invasive procedures	154

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Lynn Van Ummersen, MD.

**Gender**
Male	141
Female	259

**Ethnicity**
Non-Hispanic White	318
Black	0
Hispanic	46
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	150
From 75 to 84	135
85 and over	67
Less than 65	48

Conditions of Medicare patients treated by Dr. Lynn Van Ummersen, MD in 2019

Hypertension	75
High Cholesterol	72
Stroke	8
Ischemic Heart Disease	44
Depression	26
Chronic Kidney Disease	47
Asthma	9
Osteoperosis	17
Atrial Fibrilation	15
Heart Failure	28
Chronic Obstructive Pulmonary Disease	31
Diabetes	40
Dementia	17
Cancer	40

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Lynn Van Ummersen, MD treated as a medical oncologist in Orange City, FL during 2020 were lab tests, blood draw, minimally invasive procedures and chemotherapy.

Volume of procedures performed by Dr. Lynn Van Ummersen, MD for Medicare patients.

biological response modifier (BRM) therapy	103
blood draw	590
chemotherapy	103
doctor visit	498
hospital care	62
inpatient care	62
lab tests	1826
minimally invasive procedures	228
thyroid function tests	17

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Lynn Van Ummersen, MD.

**Gender**
Male	116
Female	218

**Ethnicity**
Non-Hispanic White	257
Black	0
Hispanic	35
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	138
From 75 to 84	97
85 and over	60
Less than 65	39

Conditions of Medicare patients treated by Dr. Lynn Van Ummersen, MD in 2020

Hypertension	75
High Cholesterol	69
Stroke	7
Ischemic Heart Disease	43
Depression	27
Chronic Kidney Disease	49
Asthma	8
Osteoperosis	15
Atrial Fibrilation	16
Heart Failure	29
Chronic Obstructive Pulmonary Disease	27
Diabetes	41
Dementia	17
Cancer	38

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Lynn Van Ummersen, MD treated as a medical oncologist in Orange City, FL during 2021 were lab tests, blood draw, minimally invasive procedures and hospital care.

Volume of procedures performed by Dr. Lynn Van Ummersen, MD for Medicare patients.

biological response modifier (BRM) therapy	62
blood draw	402
chemotherapy	62
doctor visit	365
hospital care	63
inpatient care	63
lab tests	1204
minimally invasive procedures	158

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Lynn Van Ummersen, MD.

**Gender**
Male	89
Female	199

**Ethnicity**
Non-Hispanic White	224
Black	28
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	116
From 75 to 84	92
85 and over	49
Less than 65	31

Conditions of Medicare patients treated by Dr. Lynn Van Ummersen, MD in 2021

Hypertension	75
High Cholesterol	74
Stroke	9
Ischemic Heart Disease	44
Depression	29
Chronic Kidney Disease	48
Asthma	11
Osteoperosis	19
Atrial Fibrilation	16
Heart Failure	31
Chronic Obstructive Pulmonary Disease	26
Diabetes	38
Dementia	18
Cancer	41

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Lynn Van Ummersen, MD treated as a medical oncologist in Orange City, FL during 2022 were lab tests, blood draw, minimally invasive procedures and chemotherapy.

Volume of procedures performed by Dr. Lynn Van Ummersen, MD for Medicare patients.

biological response modifier (BRM) therapy	68
blood draw	375
chemotherapy	68
doctor visit	318
hospital care	40
inpatient care	40
lab tests	651
minimally invasive procedures	164

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Lynn Van Ummersen, MD.

**Gender**
Male	104
Female	174

**Ethnicity**
Non-Hispanic White	217
Black	0
Hispanic	30
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	117
From 75 to 84	90
85 and over	52
Less than 65	19

Conditions of Medicare patients treated by Dr. Lynn Van Ummersen, MD in 2022

Hypertension	75
High Cholesterol	75
Stroke	13
Ischemic Heart Disease	31
Depression	29
Chronic Kidney Disease	38
Asthma	15
Osteoperosis	23
Atrial Fibrilation	23
Heart Failure	23
Chronic Obstructive Pulmonary Disease	31
Diabetes	32
Dementia	10
Cancer	40

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. Lynn Van Ummersen, MD for Medicare patients.

The highest averages for the top procedures that Dr. Lynn Van Ummersen, MD treated as a medical oncologist in Orange City, FL were lab tests, blood draw, minimally invasive procedures and hospital care.

biological response modifier (BRM) therapy	73
blood draw	504
chemotherapy	73
doctor visit	501
hospital care	167
inpatient care	167
lab tests	1536
minimally invasive procedures	174
thyroid function tests	13

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. Lynn Van Ummersen, MD.

**Gender**
Male	124
Female	232

**Ethnicity**
Black / African American	27
Asian / Pacific Islander	0
Non-Hispanic White	273
Native American / Alaskan Native	0
Hispanic	18
Other	0

**Age**
75 to 84	111
85 and over	59
Less than 65	48
65 to 74	136

Average of Total of Conditions of Medicare patients treated by Dr. Lynn Van Ummersen, MD From 2012 - 2022

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

Hypertension	68
High Cholesterol	62
Stroke	9
Ischemic Heart Disease	41
Depression	24
Chronic Kidney Disease	45
Asthma	12
Osteoporosis	14
Heart Failure	28
Chronic Obstructive Pulmonary Disease	27
Diabetes	37
Atrial Fibrillation	15
Dementia	15
Cancer	34

Education & Training

Dr. Lynn Van Ummersen, MD graduated from University of Massachusetts Medical School. She completed residency at Washington Hospital Center. She is certified by the National Board of Medical Examiners and has a state license in Florida.

Medical School: University of Massachusetts Medical School

Residency: Washington Hospital Center

Board Certification: National Board of Medical Examiners

Licensed In: Florida

Affiliations & Hospitals

Dr. Lynn Van Ummersen, MD is associated with these hospitals and organizations:

Orlando Health

Florida Cancer Specialists & Research Institute

Halifax Health

Ratings & Reviews

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General Payments

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

**Payments by Company**
Novartis Pharmaceuticals Corporation	$810 TASIGNA $295	PROMACTA $120	PIQRAY $97	FEMARA $56	TAFINLAR $40	Other $203
Janssen Biotech, Inc.	$482 IMBRUVICA $289	ZYTIGA $100	DARZALEX $59	RYBREVANT $34
Genentech USA, Inc.	$479 Phesgo $104	Rituxan Hycela $73	Avastin $61	TARCEVA $49	TECENTRIQ $47	Other $144
Celgene Corporation	$419 Reblozyl $174	None $69	Pomalyst $69	Revlimid $65	OPDUALAG $12	Other $29
E.R. Squibb & Sons, L.L.C.	$351 OPDIVO $316	$36
Other	$3,105 IMBRUVICA $214	XTANDI $127	JAKAFI $109	PROCRIT $99	Venclexta $89	Other $2,467

**Types of Payments**
Food and Beverage	$5,396
Education	$251

Biography

Dr. Lynn Ummersen is an adult oncology, medical oncology, and hematology (blood disorders) specialist in Lake Mary, FL, Orange City, FL, and Daytona Beach, FL. Dr. Ummersen attended the University of Massachusetts Medical School and subsequently trained at Washington Hospital Center, the University of Maryland Medical Center, and Georgetown University Hospital for residency. She has received the distinction of Castle Connolly s #1 in Cancer Care, Florida. Her hospital/clinic affiliations include Halifax Health, Orlando Health, and Florida Cancer Specialists & Research Institute. She welcomes new patients at her office inLake Mary, FL as reported by Doctor.com.

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Dr. Lynn Van Ummersen, MD

Office Locations

Noteworthy Medicare Patient Procedures Performed by Dr. Lynn Van Ummersen, MD in 2023

By Affordability:

By Affordability:

By Affordability:

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

2013 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Lynn Van Ummersen, MD in 2013

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

2014 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Lynn Van Ummersen, MD in 2014

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

2015 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Lynn Van Ummersen, MD in 2015

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

2016 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Lynn Van Ummersen, MD in 2016

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

2017 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Lynn Van Ummersen, MD in 2017

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

2018 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Lynn Van Ummersen, MD in 2018

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

2019 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Lynn Van Ummersen, MD in 2019

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

2020 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Lynn Van Ummersen, MD in 2020

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

2021 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Lynn Van Ummersen, MD in 2021

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

2022 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Lynn Van Ummersen, MD in 2022

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Average Medicare Patient Data From 2012 - 2022

Average of Total of Conditions of Medicare patients treated by Dr. Lynn Van Ummersen, MD From 2012 - 2022

Education & Training

Affiliations & Hospitals

Ratings & Reviews

General Payments

Biography

Other Providers in Orange City, FL