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Dr. William Karl Andersen, MD

Accepting New Patients

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Specializes in: Dermatopathology

Columbia University, College of Physicians and Surgeons

Professional interests include: acne, nail issues, melanoma, and more.

190 N Pointe Boulevard Suite 1
Lancaster, PA 17601

(717) 560-6444

Dr. William Karl Andersen, MD is a dermatopathologist in Lancaster, PA specializing in dermatopathology. He graduated from Columbia University, College of Physicians and Surgeons.

Office Locations

190 N Pointe Boulevard Suite 1
Lancaster, PA 17601

(717) 560-6444

open_in_new

Noteworthy Medicare Patient Procedures Performed by Dr. William Karl Andersen, MD in 2023

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

Top 5%

By Volume:

intermediate wound repair

KOH wet mount

By Affordability:

lab tests

In 2023, among providers in related specialties within Pennsylvania, Dr. William Karl Andersen, MD performed more intermediate wound repair, and KOH wet mount procedures for Medicare patients than 95% of them and he also had a list price for lab tests that was lower than the list prices billed to Medicare by 95% of them. 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 Volume:

minor procedures

removal of skin lesion

In 2012, Dr. William Karl Andersen, MD performed more minor procedures, and removal of skin lesion (growth or mark) procedures for Medicare patients than 75% of providers in related specialties within Pennsylvania.

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. William Karl Andersen, MD treated as a dermatopathologist in Lancaster, PA during 2012 were skin procedures, removal of lesion (e.g. growth), diagnostic procedures and skin surgery.

Volume of procedures performed by Dr. William Karl Andersen, MD for Medicare patients.

cancer surgery	250
diagnostic procedures	440
doctor visit	2305
ear procedures	37
injections	30
lab tests	37
minor procedures	19
phototherapy (light therapy)	117
removal of lesion (e.g. growth)	1080
skin procedures	1197
skin surgery	250
wound repair (e.g. stitches)	19

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. William Karl Andersen, MD treated as a dermatopathologist in Lancaster, PA during 2013 were skin procedures, removal of lesion (e.g. growth), diagnostic procedures and skin surgery.

Volume of procedures performed by Dr. William Karl Andersen, MD for Medicare patients.

cancer surgery	223
diagnostic procedures	466
doctor visit	2405
ear procedures	35
injections	33
lab tests	23
minor procedures	17
phototherapy (light therapy)	148
removal of lesion (e.g. growth)	1089
skin procedures	1237
skin surgery	223
wound repair (e.g. stitches)	17

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. William Karl Andersen, MD.

**Gender**
Male	842
Female	751

**Ethnicity**
Non-Hispanic White	1563
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	556
From 75 to 84	631
85 and over	363
Less than 65	43

Conditions of Medicare patients treated by Dr. William Karl Andersen, MD in 2013

Hypertension	69
High Cholesterol	62
Stroke	5
Ischemic Heart Disease	33
Depression	14
Chronic Kidney Disease	19
Asthma	4
Osteoperosis	9
Atrial Fibrilation	14
Heart Failure	13
Chronic Obstructive Pulmonary Disease	9
Diabetes	25
Dementia	9
Cancer	13

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. William Karl Andersen, MD treated as a dermatopathologist in Lancaster, PA during 2014 were skin procedures, removal of lesion (e.g. growth), diagnostic procedures and phototherapy (light therapy).

Volume of procedures performed by Dr. William Karl Andersen, MD for Medicare patients.

cancer surgery	230
diagnostic procedures	463
doctor visit	2536
ear procedures	32
injections	35
lab tests	14
minor procedures	16
phototherapy (light therapy)	345
removal of lesion (e.g. growth)	1157
skin procedures	1266
skin surgery	230
wound repair (e.g. stitches)	16

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. William Karl Andersen, MD.

**Gender**
Male	925
Female	793

**Ethnicity**
Non-Hispanic White	1664
Black	0
Hispanic	0
Asian	20
Other	18
Native American	0

**Age**
From 65 to 74	617
From 75 to 84	663
85 and over	387
Less than 65	51

Conditions of Medicare patients treated by Dr. William Karl Andersen, MD in 2014

Hypertension	68
High Cholesterol	62
Stroke	5
Ischemic Heart Disease	33
Depression	14
Chronic Kidney Disease	20
Asthma	4
Osteoperosis	8
Atrial Fibrilation	15
Heart Failure	13
Chronic Obstructive Pulmonary Disease	9
Diabetes	26
Dementia	8
Cancer	13

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. William Karl Andersen, MD treated as a dermatopathologist in Lancaster, PA during 2015 were skin procedures, removal of lesion (e.g. growth), diagnostic procedures and phototherapy (light therapy).

Volume of procedures performed by Dr. William Karl Andersen, MD for Medicare patients.

cancer surgery	168
diagnostic procedures	403
doctor visit	2336
ear procedures	26
injections	20
lab tests	23
minor procedures	23
phototherapy (light therapy)	235
removal of lesion (e.g. growth)	1006
skin procedures	1109
skin surgery	168
wound repair (e.g. stitches)	23

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. William Karl Andersen, MD.

**Gender**
Male	1844
Female	1648

**Ethnicity**
Non-Hispanic White	3402
Black	0
Hispanic	0
Asian	36
Other	30
Native American	0

**Age**
From 65 to 74	1316
From 75 to 84	1284
85 and over	778
Less than 65	114

Conditions of Medicare patients treated by Dr. William Karl Andersen, MD in 2015

Hypertension	66
High Cholesterol	63
Stroke	5
Ischemic Heart Disease	29
Depression	14
Chronic Kidney Disease	24
Asthma	6
Osteoperosis	9
Atrial Fibrilation	15
Heart Failure	12
Chronic Obstructive Pulmonary Disease	8
Diabetes	26
Dementia	9
Cancer	13

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. William Karl Andersen, MD treated as a dermatopathologist in Lancaster, PA during 2016 were skin procedures, removal of lesion (e.g. growth), diagnostic procedures and phototherapy (light therapy).

Volume of procedures performed by Dr. William Karl Andersen, MD for Medicare patients.

cancer surgery	159
diagnostic procedures	314
doctor visit	2368
ear procedures	23
injections	23
lab tests	19
minor procedures	20
phototherapy (light therapy)	267
removal of lesion (e.g. growth)	982
skin procedures	1043
skin surgery	159
wound repair (e.g. stitches)	20

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. William Karl Andersen, MD.

**Gender**
Male	1005
Female	850

**Ethnicity**
Non-Hispanic White	1801
Black	0
Hispanic	0
Asian	15
Other	27
Native American	0

**Age**
From 65 to 74	696
From 75 to 84	708
85 and over	407
Less than 65	44

Conditions of Medicare patients treated by Dr. William Karl Andersen, MD in 2016

Hypertension	67
High Cholesterol	62
Stroke	5
Ischemic Heart Disease	30
Depression	13
Chronic Kidney Disease	28
Asthma	9
Osteoperosis	8
Atrial Fibrilation	16
Heart Failure	11
Chronic Obstructive Pulmonary Disease	8
Diabetes	25
Dementia	8
Cancer	12

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. William Karl Andersen, MD treated as a dermatopathologist in Lancaster, PA during 2017 were skin procedures, removal of lesion (e.g. growth), diagnostic procedures and skin surgery.

Volume of procedures performed by Dr. William Karl Andersen, MD for Medicare patients.

cancer surgery	166
diagnostic procedures	306
doctor visit	2306
ear procedures	34
injections	20
minor procedures	12
phototherapy (light therapy)	63
removal of lesion (e.g. growth)	984
skin procedures	1047
skin surgery	166
wound repair (e.g. stitches)	12

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. William Karl Andersen, MD.

**Gender**
Male	1002
Female	802

**Ethnicity**
Non-Hispanic White	1761
Black	0
Hispanic	0
Asian	0
Other	28
Native American	0

**Age**
From 65 to 74	692
From 75 to 84	711
85 and over	366
Less than 65	35

Conditions of Medicare patients treated by Dr. William Karl Andersen, MD in 2017

Hypertension	65
High Cholesterol	49
Stroke	4
Ischemic Heart Disease	30
Depression	13
Chronic Kidney Disease	29
Asthma	6
Osteoperosis	8
Atrial Fibrilation	14
Heart Failure	11
Chronic Obstructive Pulmonary Disease	8
Diabetes	23
Dementia	8
Cancer	12

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. William Karl Andersen, MD treated as a dermatopathologist in Lancaster, PA during 2018 were skin procedures, removal of lesion (e.g. growth), diagnostic procedures and skin surgery.

Volume of procedures performed by Dr. William Karl Andersen, MD for Medicare patients.

cancer surgery	130
diagnostic procedures	241
doctor visit	2114
ear procedures	20
injections	21
lab tests	15
minor procedures	15
phototherapy (light therapy)	45
removal of lesion (e.g. growth)	889
skin procedures	934
skin surgery	130
wound repair (e.g. stitches)	15

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. William Karl Andersen, MD.

**Gender**
Male	952
Female	751

**Ethnicity**
Non-Hispanic White	1653
Black	0
Hispanic	0
Asian	0
Other	38
Native American	0

**Age**
From 65 to 74	667
From 75 to 84	673
85 and over	343
Less than 65	20

Conditions of Medicare patients treated by Dr. William Karl Andersen, MD in 2018

Hypertension	67
High Cholesterol	66
Stroke	5
Ischemic Heart Disease	29
Depression	14
Chronic Kidney Disease	29
Asthma	5
Osteoperosis	9
Atrial Fibrilation	15
Heart Failure	12
Chronic Obstructive Pulmonary Disease	7
Diabetes	22
Dementia	8
Cancer	13

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. William Karl Andersen, MD treated as a dermatopathologist in Lancaster, PA during 2019 were skin procedures, removal of lesion (e.g. growth), skin surgery and cancer surgery.

Volume of procedures performed by Dr. William Karl Andersen, MD for Medicare patients.

cancer surgery	141
doctor visit	1909
lab tests	18
phototherapy (light therapy)	45
removal of lesion (e.g. growth)	771
skin procedures	816
skin surgery	141

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. William Karl Andersen, MD.

**Gender**
Male	920
Female	794

**Ethnicity**
Non-Hispanic White	1655
Black	0
Hispanic	0
Asian	0
Other	41
Native American	0

**Age**
From 65 to 74	691
From 75 to 84	671
85 and over	334
Less than 65	18

Conditions of Medicare patients treated by Dr. William Karl Andersen, MD in 2019

Hypertension	69
High Cholesterol	66
Stroke	4
Ischemic Heart Disease	30
Depression	15
Chronic Kidney Disease	30
Asthma	5
Osteoperosis	9
Atrial Fibrilation	14
Heart Failure	12
Chronic Obstructive Pulmonary Disease	8
Diabetes	22
Dementia	9
Cancer	13

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. William Karl Andersen, MD treated as a dermatopathologist in Lancaster, PA during 2020 were skin procedures, removal of lesion (e.g. growth), skin surgery and cancer surgery.

Volume of procedures performed by Dr. William Karl Andersen, MD for Medicare patients.

cancer surgery	129
diagnostic procedures	19
doctor visit	1234
ear procedures	19
phototherapy (light therapy)	50
removal of lesion (e.g. growth)	575
skin procedures	625
skin surgery	129

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. William Karl Andersen, MD.

**Gender**
Male	694
Female	542

**Ethnicity**
Non-Hispanic White	1192
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	471
From 75 to 84	500
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. William Karl Andersen, MD in 2020

Hypertension	66
High Cholesterol	64
Stroke	3
Ischemic Heart Disease	30
Depression	13
Chronic Kidney Disease	30
Asthma	5
Osteoperosis	8
Atrial Fibrilation	12
Heart Failure	11
Chronic Obstructive Pulmonary Disease	6
Diabetes	23
Dementia	9
Cancer	15

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. William Karl Andersen, MD treated as a dermatopathologist in Lancaster, PA during 2021 were skin procedures, removal of lesion (e.g. growth), skin surgery and cancer surgery.

Volume of procedures performed by Dr. William Karl Andersen, MD for Medicare patients.

cancer surgery	159
diagnostic procedures	16
doctor visit	1039
ear procedures	16
minor procedures	14
phototherapy (light therapy)	39
removal of lesion (e.g. growth)	612
skin procedures	651
skin surgery	159
wound repair (e.g. stitches)	14

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. William Karl Andersen, MD.

**Gender**
Male	720
Female	569

**Ethnicity**
Non-Hispanic White	1234
Black	0
Hispanic	0
Asian	0
Other	44
Native American	0

**Age**
From 65 to 74	497
From 75 to 84	535
85 and over	243
Less than 65	14

Conditions of Medicare patients treated by Dr. William Karl Andersen, MD in 2021

Hypertension	65
High Cholesterol	67
Stroke	4
Ischemic Heart Disease	29
Depression	15
Chronic Kidney Disease	28
Asthma	5
Osteoperosis	11
Atrial Fibrilation	13
Heart Failure	11
Chronic Obstructive Pulmonary Disease	7
Diabetes	23
Dementia	8
Cancer	14

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. William Karl Andersen, MD treated as a dermatopathologist in Lancaster, PA during 2022 were skin procedures, removal of lesion (e.g. growth), skin surgery and cancer surgery.

Volume of procedures performed by Dr. William Karl Andersen, MD for Medicare patients.

cancer surgery	171
doctor visit	1074
lab tests	12
minor procedures	14
phototherapy (light therapy)	36
removal of lesion (e.g. growth)	624
skin procedures	660
skin surgery	171
wound repair (e.g. stitches)	14

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. William Karl Andersen, MD.

**Gender**
Male	753
Female	569

**Ethnicity**
Non-Hispanic White	1265
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	483
From 75 to 84	565
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. William Karl Andersen, MD in 2022

Hypertension	71
High Cholesterol	75
Stroke	6
Ischemic Heart Disease	25
Depression	12
Chronic Kidney Disease	24
Asthma	8
Osteoperosis	14
Atrial Fibrilation	20
Heart Failure	12
Chronic Obstructive Pulmonary Disease	8
Diabetes	24
Dementia	5
Cancer	19

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. William Karl Andersen, MD for Medicare patients.

The highest averages for the top procedures that Dr. William Karl Andersen, MD treated as a dermatopathologist in Lancaster, PA were skin procedures, removal of lesion (e.g. growth), diagnostic procedures and skin surgery.

cancer surgery	175
diagnostic procedures	296
doctor visit	1966
ear procedures	26
injections	26
lab tests	20
minor procedures	16
phototherapy (light therapy)	126
removal of lesion (e.g. growth)	888
skin procedures	962
skin surgery	175
wound repair (e.g. stitches)	16

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. William Karl Andersen, MD.

**Gender**
Male	877
Female	733

**Ethnicity**
Black / African American	0
Asian / Pacific Islander	6
Non-Hispanic White	1562
Native American / Alaskan Native	0
Hispanic	0
Other	20

**Age**
75 to 84	631
85 and over	292
Less than 65	30
65 to 74	607

Average of Total of Conditions of Medicare patients treated by Dr. William Karl Andersen, MD From 2012 - 2022

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

Hypertension	61
High Cholesterol	57
Stroke	4
Ischemic Heart Disease	27
Depression	12
Chronic Kidney Disease	23
Asthma	5
Osteoporosis	8
Heart Failure	10
Chronic Obstructive Pulmonary Disease	7
Diabetes	21
Atrial Fibrillation	13
Dementia	7
Cancer	12

Education & Training

Dr. William Karl Andersen, MD graduated from Columbia University, College of Physicians and Surgeons. He completed residency at Tufts Medical Center. He is certified by the Board certifications: Pathology - Anatomic Pathology and has a state license in Pennsylvania.

Medical School: Columbia University, College of Physicians and Surgeons

Residency: Tufts Medical Center

Board Certification: Board certifications: Pathology - Anatomic Pathology (1991)

Licensed In: Pennsylvania

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General Payments

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

**Payments by Company**
Janssen Biotech, Inc.	$951 Tremfya $557	STELARA $394
Cynosure, Inc	$249 Surgitron $249
Merz North America, Inc.	$207 Xeomin $163	$44
Genentech USA, Inc.	$131 Erivedge $131
VYNE Pharmaceuticals Inc.	$88 ZILXI $49	AMZEEQ $39
Other	$197 ORACEA $36	Humira $35	VEREGEN $28	Skyrizi $22	Embedding Cassette White, Unisette $17	Other $59

**Types of Payments**
Education	$1,035
Food and Beverage	$523
Gift	$266

Biography

Dr. William Andersen is a dermatopathology specialist. Areas of expertise for Dr. Andersen include sexually transmitted diseases (STds), lipoma, and warts. His practice in Lancaster, PA is open to new patients as reported by Penn Medicine. He studied medicine at Columbia University, College of Physicians and Surgeons. He completed his residency training at Columbia University Medical Center, St. Luke's Hospital & Health Network, Pennsylvania, and Tufts Medical Center.

Select Year:

Dr. William Karl Andersen, MD

Office Locations

Noteworthy Medicare Patient Procedures Performed by Dr. William Karl Andersen, MD in 2023

By Volume:

By Affordability:

By Volume:

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. William Karl Andersen, MD in 2013

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

2014 Medicare Patient Data

Conditions of Medicare patients treated by Dr. William Karl Andersen, MD in 2014

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

2015 Medicare Patient Data

Conditions of Medicare patients treated by Dr. William Karl Andersen, MD in 2015

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

2016 Medicare Patient Data

Conditions of Medicare patients treated by Dr. William Karl Andersen, MD in 2016

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

2017 Medicare Patient Data

Conditions of Medicare patients treated by Dr. William Karl Andersen, MD in 2017

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

2018 Medicare Patient Data

Conditions of Medicare patients treated by Dr. William Karl Andersen, MD in 2018

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

2019 Medicare Patient Data

Conditions of Medicare patients treated by Dr. William Karl Andersen, MD in 2019

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

2020 Medicare Patient Data

Conditions of Medicare patients treated by Dr. William Karl Andersen, MD in 2020

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

2021 Medicare Patient Data

Conditions of Medicare patients treated by Dr. William Karl Andersen, MD in 2021

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

2022 Medicare Patient Data

Conditions of Medicare patients treated by Dr. William Karl Andersen, 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. William Karl Andersen, MD From 2012 - 2022

Education & Training

Ratings & Reviews

General Payments

Biography

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