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Home > OH Providers > Cytopathologists

Dr. Theodore H. Niemann, MD

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Specializes in: Cytopathology

Southern Illinois University School of Medicine (1988)

495 Cooper Road Suite 306
Westerville, OH 43081

(380) 898-5568

Dr. Theodore H. Niemann, MD is a cytopathologist in Westerville, OH specializing in cytopathology. He graduated from Southern Illinois University School of Medicine in 1988 and has 38 years of experience. Dr. Theodore H. Niemann, MD is affiliated with Mount Carmel Health System.

Office Locations

Mount Carmel Health System

495 Cooper Road Suite 306
Westerville, OH 43081

(380) 898-5568

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793 W State Street
Columbus, OH 43222

(614) 234-1300

(614) 234-2931

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Noteworthy Medicare Patient Procedures Performed by Dr. Theodore H. Niemann, MD in 2023

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

Top 25%

By Volume:

immunohistochemistry test

In 2012, Dr. Theodore H. Niemann, MD performed more immunohistochemistry (IHC) test procedures for Medicare patients than 75% of providers in related specialties within Ohio.

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. Theodore H. Niemann, MD treated as a cytopathologist in Westerville, OH during 2012 were lab tests, consultation and cytology.

Volume of procedures performed by Dr. Theodore H. Niemann, MD for Medicare patients.

consultation	36
cytology	32
lab tests	483

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Theodore H. Niemann, MD treated as a cytopathologist in Westerville, OH during 2013 were lab tests, cytology and consultation.

Volume of procedures performed by Dr. Theodore H. Niemann, MD for Medicare patients.

consultation	28
cytology	35
lab tests	393

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Theodore H. Niemann, MD.

**Gender**
Male	262
Female	338

**Ethnicity**
Non-Hispanic White	522
Black	56
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	269
From 75 to 84	154
85 and over	69
Less than 65	108

Conditions of Medicare patients treated by Dr. Theodore H. Niemann, MD in 2013

Hypertension	75
High Cholesterol	63
Stroke	6
Ischemic Heart Disease	39
Depression	31
Chronic Kidney Disease	33
Asthma	11
Osteoperosis	11
Atrial Fibrilation	14
Heart Failure	24
Chronic Obstructive Pulmonary Disease	22
Diabetes	39
Dementia	9
Cancer	22

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Theodore H. Niemann, MD treated as a cytopathologist in Westerville, OH during 2014 were lab tests, cytology and consultation.

Volume of procedures performed by Dr. Theodore H. Niemann, MD for Medicare patients.

consultation	42
cytology	64
lab tests	254

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Theodore H. Niemann, MD.

**Gender**
Male	222
Female	276

**Ethnicity**
Non-Hispanic White	426
Black	48
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	236
From 75 to 84	111
85 and over	52
Less than 65	99

Conditions of Medicare patients treated by Dr. Theodore H. Niemann, MD in 2014

Hypertension	75
High Cholesterol	67
Stroke	5
Ischemic Heart Disease	38
Depression	31
Chronic Kidney Disease	39
Asthma	13
Osteoperosis	9
Atrial Fibrilation	15
Heart Failure	23
Chronic Obstructive Pulmonary Disease	24
Diabetes	36
Dementia	10
Cancer	20

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Theodore H. Niemann, MD treated as a cytopathologist in Westerville, OH during 2015 were lab tests, cytology and consultation.

Volume of procedures performed by Dr. Theodore H. Niemann, MD for Medicare patients.

consultation	37
cytology	53
lab tests	181

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Theodore H. Niemann, MD.

**Gender**
Male	386
Female	492

**Ethnicity**
Non-Hispanic White	766
Black	84
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	434
From 75 to 84	212
85 and over	90
Less than 65	142

Conditions of Medicare patients treated by Dr. Theodore H. Niemann, MD in 2015

Hypertension	75
High Cholesterol	65
Stroke	7
Ischemic Heart Disease	42
Depression	33
Chronic Kidney Disease	40
Asthma	16
Osteoperosis	9
Atrial Fibrilation	17
Heart Failure	24
Chronic Obstructive Pulmonary Disease	21
Diabetes	36
Dementia	12
Cancer	25

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Theodore H. Niemann, MD treated as a cytopathologist in Westerville, OH during 2016 were lab tests, cytology and consultation.

Volume of procedures performed by Dr. Theodore H. Niemann, MD for Medicare patients.

consultation	36
cytology	46
lab tests	125

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Theodore H. Niemann, MD.

**Gender**
Male	170
Female	243

**Ethnicity**
Non-Hispanic White	356
Black	45
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	181
From 75 to 84	120
85 and over	42
Less than 65	70

Conditions of Medicare patients treated by Dr. Theodore H. Niemann, MD in 2016

Hypertension	75
High Cholesterol	68
Stroke	7
Ischemic Heart Disease	37
Depression	39
Chronic Kidney Disease	42
Asthma	23
Osteoperosis	11
Atrial Fibrilation	16
Heart Failure	24
Chronic Obstructive Pulmonary Disease	19
Diabetes	34
Dementia	13
Cancer	25

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Theodore H. Niemann, MD treated as a cytopathologist in Westerville, OH during 2017 were lab tests, cytology and consultation.

Volume of procedures performed by Dr. Theodore H. Niemann, MD for Medicare patients.

consultation	33
cytology	45
lab tests	176

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Theodore H. Niemann, MD.

**Gender**
Male	229
Female	286

**Ethnicity**
Non-Hispanic White	419
Black	66
Hispanic	0
Asian	0
Other	15
Native American	0

**Age**
From 65 to 74	250
From 75 to 84	141
85 and over	52
Less than 65	72

Conditions of Medicare patients treated by Dr. Theodore H. Niemann, MD in 2017

Hypertension	75
High Cholesterol	62
Stroke	7
Ischemic Heart Disease	42
Depression	38
Chronic Kidney Disease	47
Asthma	10
Osteoperosis	8
Atrial Fibrilation	17
Heart Failure	26
Chronic Obstructive Pulmonary Disease	23
Diabetes	37
Dementia	13
Cancer	26

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Theodore H. Niemann, MD treated as a cytopathologist in Westerville, OH during 2018 were lab tests, cytology and consultation.

Volume of procedures performed by Dr. Theodore H. Niemann, MD for Medicare patients.

consultation	51
cytology	58
lab tests	169

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Theodore H. Niemann, MD.

**Gender**
Male	208
Female	298

**Ethnicity**
Non-Hispanic White	420
Black	61
Hispanic	0
Asian	0
Other	11
Native American	0

**Age**
From 65 to 74	240
From 75 to 84	159
85 and over	35
Less than 65	72

Conditions of Medicare patients treated by Dr. Theodore H. Niemann, MD in 2018

Hypertension	75
High Cholesterol	72
Stroke	8
Ischemic Heart Disease	42
Depression	40
Chronic Kidney Disease	52
Asthma	10
Osteoperosis	9
Atrial Fibrilation	19
Heart Failure	28
Chronic Obstructive Pulmonary Disease	25
Diabetes	41
Dementia	14
Cancer	21

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Theodore H. Niemann, MD treated as a cytopathologist in Westerville, OH during 2019 were lab tests, cytology and consultation.

Volume of procedures performed by Dr. Theodore H. Niemann, MD for Medicare patients.

consultation	17
cytology	69
lab tests	125

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Theodore H. Niemann, MD.

**Gender**
Male	246
Female	351

**Ethnicity**
Non-Hispanic White	533
Black	39
Hispanic	0
Asian	0
Other	13
Native American	0

**Age**
From 65 to 74	289
From 75 to 84	181
85 and over	59
Less than 65	68

Conditions of Medicare patients treated by Dr. Theodore H. Niemann, MD in 2019

Hypertension	75
High Cholesterol	69
Stroke	5
Ischemic Heart Disease	39
Depression	35
Chronic Kidney Disease	43
Asthma	9
Osteoperosis	11
Atrial Fibrilation	14
Heart Failure	23
Chronic Obstructive Pulmonary Disease	20
Diabetes	38
Dementia	12
Cancer	23

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Theodore H. Niemann, MD treated as a cytopathologist in Westerville, OH during 2020 were lab tests and cytology.

Volume of procedures performed by Dr. Theodore H. Niemann, MD for Medicare patients.

cytology	53
lab tests	203

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Theodore H. Niemann, MD.

**Gender**
Male	285
Female	316

**Ethnicity**
Non-Hispanic White	536
Black	47
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	291
From 75 to 84	186
85 and over	54
Less than 65	70

Conditions of Medicare patients treated by Dr. Theodore H. Niemann, MD in 2020

Hypertension	75
High Cholesterol	67
Stroke	5
Ischemic Heart Disease	40
Depression	31
Chronic Kidney Disease	47
Asthma	8
Osteoperosis	9
Atrial Fibrilation	17
Heart Failure	23
Chronic Obstructive Pulmonary Disease	19
Diabetes	36
Dementia	11
Cancer	28

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Theodore H. Niemann, MD treated as a cytopathologist in Westerville, OH during 2021 were lab tests, cytology and consultation.

Volume of procedures performed by Dr. Theodore H. Niemann, MD for Medicare patients.

consultation	32
cytology	55
lab tests	183

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Theodore H. Niemann, MD.

**Gender**
Male	295
Female	350

**Ethnicity**
Non-Hispanic White	571
Black	46
Hispanic	0
Asian	0
Other	17
Native American	0

**Age**
From 65 to 74	347
From 75 to 84	188
85 and over	62
Less than 65	48

Conditions of Medicare patients treated by Dr. Theodore H. Niemann, MD in 2021

Hypertension	75
High Cholesterol	70
Stroke	5
Ischemic Heart Disease	40
Depression	33
Chronic Kidney Disease	41
Asthma	8
Osteoperosis	10
Atrial Fibrilation	16
Heart Failure	23
Chronic Obstructive Pulmonary Disease	19
Diabetes	35
Dementia	10
Cancer	28

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Theodore H. Niemann, MD treated as a cytopathologist in Westerville, OH during 2022 were lab tests and cytology.

Volume of procedures performed by Dr. Theodore H. Niemann, MD for Medicare patients.

cytology	55
lab tests	190

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Theodore H. Niemann, MD.

**Gender**
Male	238
Female	318

**Ethnicity**
Non-Hispanic White	471
Black	53
Hispanic	0
Asian	0
Other	21
Native American	0

**Age**
From 65 to 74	316
From 75 to 84	156
85 and over	49
Less than 65	35

Conditions of Medicare patients treated by Dr. Theodore H. Niemann, MD in 2022

Hypertension	75
High Cholesterol	75
Stroke	9
Ischemic Heart Disease	33
Depression	29
Chronic Kidney Disease	29
Asthma	13
Osteoperosis	14
Atrial Fibrilation	22
Heart Failure	22
Chronic Obstructive Pulmonary Disease	22
Diabetes	35
Dementia	5
Cancer	36

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

The top procedures that Dr. Theodore H. Niemann, MD treated as a cytopathologist in Westerville, OH during 2023 were lab tests, cytology and consultation.

Volume of procedures performed by Dr. Theodore H. Niemann, MD for Medicare patients.

consultation	30
cytology	98
lab tests	233

2023 Medicare Patient Data

Information about Medicare patients treated by Dr. Theodore H. Niemann, MD.

**Gender**
Male	279
Female	341

**Ethnicity**
Non-Hispanic White	545
Black	49
Hispanic	0
Asian	0
Other	14
Native American	0

**Age**
From 65 to 74	289
From 75 to 84	218
85 and over	53
Less than 65	60

Conditions of Medicare patients treated by Dr. Theodore H. Niemann, MD in 2023

Hypertension	75
High Cholesterol	75
Stroke	9
Ischemic Heart Disease	33
Depression	30
Chronic Kidney Disease	31
Asthma	10
Osteoperosis	17
Atrial Fibrilation	22
Heart Failure	22
Chronic Obstructive Pulmonary Disease	19
Diabetes	35
Dementia	9
Cancer	32

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2023

Volume of procedures performed by Dr. Theodore H. Niemann, MD for Medicare patients.

The highest averages for the top procedures that Dr. Theodore H. Niemann, MD treated as a cytopathologist in Westerville, OH were lab tests, cytology and consultation.

consultation	34
cytology	55
lab tests	226

Average Medicare Patient Data From 2012 - 2023

Information about Medicare patients treated by Dr. Theodore H. Niemann, MD.

**Gender**
Male	235
Female	300

**Ethnicity**
Black / African American	49
Asian / Pacific Islander	0
Non-Hispanic White	463
Hispanic	0
Native American / Alaskan Native	0
Other	7

**Age**
75 to 84	152
85 and over	51
Less than 65	70
65 to 74	261

Average of Total of Conditions of Medicare patients treated by Dr. Theodore H. Niemann, MD From 2012 - 2023

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

Hypertension	68
High Cholesterol	62
Stroke	6
Ischemic Heart Disease	35
Depression	30
Chronic Kidney Disease	37
Asthma	10
Osteoporosis	9
Heart Failure	21
Chronic Obstructive Pulmonary Disease	19
Diabetes	33
Atrial Fibrillation	15
Cancer	23
Dementia	9

Education & Training

Dr. Theodore H. Niemann, MD graduated from Southern Illinois University School of Medicine in 1988. He completed residency at University of Iowa Hospitals & Clinics. He is certified by the Pathology, Anatomic Pathology and Clinical Pathology, American Board of Pathology and has a state license in Ohio.

Medical School: Southern Illinois University School of Medicine (1988)

Residency: University of Iowa Hospitals & Clinics (1993)

Board Certification: Pathology, Anatomic Pathology and Clinical Pathology, American Board of Pathology (1994)

Licensed In: Ohio

Affiliations & Hospitals

Dr. Theodore H. Niemann, MD is associated with these hospitals and organizations:

Mount Carmel Health System

Ratings & Reviews

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General Payments

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

**Payments by Company**
Roche Diagnostics Corporation	$20 TD VENTANA Primary Staining Instruments and Reagents $20

**Types of Payments**
Food and Beverage	$20

Biography

Dr. Theodore Niemann is a medical specialist in cytopathology. He studied medicine at Southern Illinois University School of Medicine. Dr. Niemann trained at the University of Iowa Hospitals & Clinics for residency. He is professionally affiliated with Mount Carmel Health System. Unfortunately, according to Mount Carmel Health System, Dr. Niemann is not currently accepting new patients.