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Home > NC Providers > Psychologists

Dr. Katherine Lynn Applegate, PhD

Accepting New Patients

(55 Ratings)

Specializes in: Psychology

2100 Erwin Road
Durham, NC 27710

(919) 620-4467

Dr. Katherine Lynn Applegate, PhD is a psychologist in Durham, NC specializing in psychology. Dr. Katherine Lynn Applegate, PhD is affiliated with Duke Health.

Office Locations

2100 Erwin Road
Durham, NC 27710

(919) 620-4467

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Duke Health

40 Duke Medicine Circle
Durham, NC 27710

(919) 613-0444

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Duke Health

4309 Medical Park Drive
Durham, NC 27704

(919) 684-0100

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Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. Katherine Lynn Applegate, PhD treated as a psychologist in Durham, NC during 2012 were mental health therapy and diagnostic evaluation.

Volume of procedures performed by Dr. Katherine Lynn Applegate, PhD for Medicare patients.

diagnostic evaluation	27
mental health therapy	78

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Katherine Lynn Applegate, PhD treated as a psychologist in Durham, NC during 2013 were mental health therapy.

Volume of procedures performed by Dr. Katherine Lynn Applegate, PhD for Medicare patients.

mental health therapy	286

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Katherine Lynn Applegate, PhD.

**Gender**
Male	49
Female	101

**Ethnicity**
Non-Hispanic White	95
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	39
From 75 to 84	0
85 and over	0
Less than 65	99

Conditions of Medicare patients treated by Dr. Katherine Lynn Applegate, PhD in 2013

Hypertension	65
High Cholesterol	43
Stroke	0
Ischemic Heart Disease	22
Depression	72
Chronic Kidney Disease	16
Asthma	16
Osteoperosis	7
Atrial Fibrilation	0
Heart Failure	17
Chronic Obstructive Pulmonary Disease	13
Diabetes	47
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Katherine Lynn Applegate, PhD treated as a psychologist in Durham, NC during 2014 were mental health therapy.

Volume of procedures performed by Dr. Katherine Lynn Applegate, PhD for Medicare patients.

mental health therapy	213

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Katherine Lynn Applegate, PhD.

**Gender**
Male	55
Female	129

**Ethnicity**
Non-Hispanic White	125
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	72
From 75 to 84	0
85 and over	0
Less than 65	98

Conditions of Medicare patients treated by Dr. Katherine Lynn Applegate, PhD in 2014

Hypertension	67
High Cholesterol	48
Stroke	0
Ischemic Heart Disease	24
Depression	74
Chronic Kidney Disease	18
Asthma	15
Osteoperosis	7
Atrial Fibrilation	0
Heart Failure	15
Chronic Obstructive Pulmonary Disease	15
Diabetes	47
Dementia	0
Cancer	7

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Katherine Lynn Applegate, PhD treated as a psychologist in Durham, NC during 2015 were mental health therapy.

Volume of procedures performed by Dr. Katherine Lynn Applegate, PhD for Medicare patients.

mental health therapy	355

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Katherine Lynn Applegate, PhD.

**Gender**
Male	102
Female	250

**Ethnicity**
Non-Hispanic White	220
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	104
From 75 to 84	0
85 and over	0
Less than 65	210

Conditions of Medicare patients treated by Dr. Katherine Lynn Applegate, PhD in 2015

Hypertension	67
High Cholesterol	46
Stroke	0
Ischemic Heart Disease	21
Depression	72
Chronic Kidney Disease	19
Asthma	22
Osteoperosis	7
Atrial Fibrilation	0
Heart Failure	10
Chronic Obstructive Pulmonary Disease	12
Diabetes	43
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Katherine Lynn Applegate, PhD treated as a psychologist in Durham, NC during 2016 were mental health therapy.

Volume of procedures performed by Dr. Katherine Lynn Applegate, PhD for Medicare patients.

mental health therapy	356

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Katherine Lynn Applegate, PhD.

**Gender**
Male	44
Female	102

**Ethnicity**
Non-Hispanic White	85
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	0
From 75 to 84	0
85 and over	0
Less than 65	96

Conditions of Medicare patients treated by Dr. Katherine Lynn Applegate, PhD in 2016

Hypertension	68
High Cholesterol	39
Stroke	0
Ischemic Heart Disease	24
Depression	71
Chronic Kidney Disease	29
Asthma	21
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	15
Chronic Obstructive Pulmonary Disease	14
Diabetes	40
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Katherine Lynn Applegate, PhD treated as a psychologist in Durham, NC during 2017 were mental health therapy.

Volume of procedures performed by Dr. Katherine Lynn Applegate, PhD for Medicare patients.

mental health therapy	195

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Katherine Lynn Applegate, PhD.

**Gender**
Male	47
Female	114

**Ethnicity**
Non-Hispanic White	92
Black	56
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	56
From 75 to 84	0
85 and over	0
Less than 65	85

Conditions of Medicare patients treated by Dr. Katherine Lynn Applegate, PhD in 2017

Hypertension	65
High Cholesterol	39
Stroke	0
Ischemic Heart Disease	25
Depression	75
Chronic Kidney Disease	33
Asthma	17
Osteoperosis	0
Atrial Fibrilation	7
Heart Failure	13
Chronic Obstructive Pulmonary Disease	12
Diabetes	39
Dementia	0
Cancer	8

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Katherine Lynn Applegate, PhD treated as a psychologist in Durham, NC during 2018 were mental health therapy.

Volume of procedures performed by Dr. Katherine Lynn Applegate, PhD for Medicare patients.

mental health therapy	201

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Katherine Lynn Applegate, PhD.

**Gender**
Male	61
Female	116

**Ethnicity**
Non-Hispanic White	121
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	69
From 75 to 84	0
85 and over	0
Less than 65	77

Conditions of Medicare patients treated by Dr. Katherine Lynn Applegate, PhD in 2018

Hypertension	67
High Cholesterol	46
Stroke	0
Ischemic Heart Disease	24
Depression	73
Chronic Kidney Disease	34
Asthma	10
Osteoperosis	11
Atrial Fibrilation	8
Heart Failure	20
Chronic Obstructive Pulmonary Disease	14
Diabetes	38
Dementia	10
Cancer	0

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Katherine Lynn Applegate, PhD treated as a psychologist in Durham, NC during 2019 were mental health therapy.

Volume of procedures performed by Dr. Katherine Lynn Applegate, PhD for Medicare patients.

mental health therapy	267

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Katherine Lynn Applegate, PhD.

**Gender**
Male	44
Female	91

**Ethnicity**
Non-Hispanic White	86
Black	38
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	44
From 75 to 84	0
85 and over	0
Less than 65	57

Conditions of Medicare patients treated by Dr. Katherine Lynn Applegate, PhD in 2019

Hypertension	64
High Cholesterol	47
Stroke	0
Ischemic Heart Disease	30
Depression	73
Chronic Kidney Disease	40
Asthma	11
Osteoperosis	9
Atrial Fibrilation	0
Heart Failure	17
Chronic Obstructive Pulmonary Disease	10
Diabetes	44
Dementia	8
Cancer	0

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Katherine Lynn Applegate, PhD treated as a psychologist in Durham, NC during 2020 were mental health therapy.

Volume of procedures performed by Dr. Katherine Lynn Applegate, PhD for Medicare patients.

mental health therapy	203

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Katherine Lynn Applegate, PhD.

**Gender**
Male	29
Female	82

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

**Age**
From 65 to 74	33
From 75 to 84	0
85 and over	0
Less than 65	53

Conditions of Medicare patients treated by Dr. Katherine Lynn Applegate, PhD in 2020

Hypertension	69
High Cholesterol	43
Stroke	0
Ischemic Heart Disease	27
Depression	74
Chronic Kidney Disease	37
Asthma	16
Osteoperosis	12
Atrial Fibrilation	0
Heart Failure	14
Chronic Obstructive Pulmonary Disease	0
Diabetes	35
Dementia	10
Cancer	0

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Katherine Lynn Applegate, PhD treated as a psychologist in Durham, NC during 2021 were mental health therapy.

Volume of procedures performed by Dr. Katherine Lynn Applegate, PhD for Medicare patients.

mental health therapy	249

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Katherine Lynn Applegate, PhD.

**Gender**
Male	38
Female	80

**Ethnicity**
Non-Hispanic White	82
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	43
From 75 to 84	0
85 and over	0
Less than 65	48

Conditions of Medicare patients treated by Dr. Katherine Lynn Applegate, PhD in 2021

Hypertension	69
High Cholesterol	47
Stroke	0
Ischemic Heart Disease	23
Depression	73
Chronic Kidney Disease	35
Asthma	9
Osteoperosis	14
Atrial Fibrilation	0
Heart Failure	12
Chronic Obstructive Pulmonary Disease	0
Diabetes	34
Dementia	0
Cancer	13

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Katherine Lynn Applegate, PhD treated as a psychologist in Durham, NC during 2022 were mental health therapy.

Volume of procedures performed by Dr. Katherine Lynn Applegate, PhD for Medicare patients.

mental health therapy	277

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Katherine Lynn Applegate, PhD.

**Gender**
Male	33
Female	66

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

**Age**
From 65 to 74	41
From 75 to 84	0
85 and over	0
Less than 65	36

Conditions of Medicare patients treated by Dr. Katherine Lynn Applegate, PhD in 2022

Hypertension	75
High Cholesterol	65
Stroke	0
Ischemic Heart Disease	23
Depression	65
Chronic Kidney Disease	22
Asthma	0
Osteoperosis	21
Atrial Fibrilation	14
Heart Failure	14
Chronic Obstructive Pulmonary Disease	18
Diabetes	31
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. Katherine Lynn Applegate, PhD for Medicare patients.

The highest averages for the top procedures that Dr. Katherine Lynn Applegate, PhD treated as a psychologist in Durham, NC were mental health therapy and diagnostic evaluation.

diagnostic evaluation	27
mental health therapy	243

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. Katherine Lynn Applegate, PhD.

**Gender**
Male	45
Female	102

**Ethnicity**
Black / African American	8
Asian / Pacific Islander	0
Non-Hispanic White	95
Native American / Alaskan Native	0
Hispanic	0
Other	0

**Age**
75 to 84	0
85 and over	0
Less than 65	78
65 to 74	45

Average of Total of Conditions of Medicare patients treated by Dr. Katherine Lynn Applegate, PhD From 2012 - 2022

The highest averages of the most common conditions of Medicare patients that Dr. Katherine Lynn Applegate, PhD treated were depression, hypertension, high cholesterol and diabetes.

Hypertension	61
High Cholesterol	42
Stroke	0
Ischemic Heart Disease	22
Depression	65
Chronic Kidney Disease	25
Asthma	12
Osteoporosis	8
Heart Failure	13
Chronic Obstructive Pulmonary Disease	9
Diabetes	36
Atrial Fibrillation	2
Dementia	2
Cancer	2

Education & Training

She completed residency at Duke University Medical Center. She has a state license in North Carolina.

Residency: Duke University Medical Center (2000)

Licensed In: North Carolina

Affiliations & Hospitals

Dr. Katherine Lynn Applegate, PhD is associated with these hospitals and organizations:

Duke Health

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. Katherine Lynn Applegate, PhD appears to accept the following insurance providers: MedCost, Aetna Traditional Choice, Aetna Medicare PPO, BlueCross BlueShield of North Carolina, CIGNA Open Access Plus, WellCare, AmeriHealth, Medicare Part B, Medicare Advantage, AARP, CIGNA Open Access, United Healthcare PPO, United Healthcare POS, United Healthcare HMO, Aetna, Aetna Workers' Compensation, TRICARE Prime, United Healthcare, Aetna Open Choice PPO, TRICARE Prime Remote, Medicare, Medicaid, Humana, Cigna, TRICARE, Harvard Pilgrim Health Care, Aetna Managed Choice POS, Gateway Health Alliance, Aetna HMO, Alliance Health (*Beginning January 2026), *Duke HomeCare and Hospice does not participate in the plan., Duke Employee Plans, Blue Options (123, PPO, HSA), *Duke HomeCare and Hospice and mental health providers do not participate with the plan., Aetna Quality Point of Service (QPOS), Aetna Choice POS, Aetna Choice POS II, Duke Advantage (*Beginning January 2026), Aetna Medicare Value Plan (HMO), Blue Advantage (*Available in select counties only), Duke Options (*Beginning January 2026), Duke Basic, Duke USA (*Beginning January 2026), Ambetter, Experience Health, Aetna Select HMO, Aetna PCP Coordinated POS Plan, Blue Select, Blue Medicare (HMO, PPO)*, Aetna Limited Benefit Insurance PPO, Vaya Health (*Beginning January 2026), Healthy Blue, Trillium (*Beginning January 2026), Aetna Health Network Only, Aetna Health Network Option, All Savers Fully Insured, Blue Value (*Duke Health Lake Norman and Kernodle Clinics only), First Medicare Direct, Carolina Complete Health, Healthgram, All Savers Alternate Funding, Aetna Medicare Assure Plan (HMO D-SNP), Aetna/CVS Health, Aetna Elect Choice HMO, Aetna Open Access Elect Choice, Partners (*Beginning January 2026), Aetna Voluntary Indemnity Group Plan, Duke Select, Aetna Open Access HMO, Open Access Aetna Select, Aetna Open Access Managed Choice, NC State Employees Health Plan, Ambetter of North Carolina and United Medical Resources (UMR).

Insurance Accepted by Provider includes:

According to our sources, Dr. Katherine Lynn Applegate, PhD accepts the following insurance providers:

MedCost

Aetna Traditional Choice

Aetna Medicare PPO

BlueCross BlueShield of North Carolina

CIGNA Open Access Plus

WellCare

AmeriHealth

Medicare Part B

Medicare Advantage

AARP

CIGNA Open Access

United Healthcare PPO

United Healthcare POS

United Healthcare HMO

Aetna

Aetna Workers' Compensation

TRICARE Prime

United Healthcare

Aetna Open Choice PPO

TRICARE Prime Remote

Medicare

Medicaid

Humana

Cigna

TRICARE

Harvard Pilgrim Health Care

Aetna Managed Choice POS

Gateway Health Alliance

Aetna HMO

Alliance Health (*Beginning January 2026)

*Duke HomeCare and Hospice does not participate in the plan.

Duke Employee Plans

Blue Options (123, PPO, HSA)

*Duke HomeCare and Hospice and mental health providers do not participate with the plan.

Aetna Quality Point of Service (QPOS)

Aetna Choice POS, Aetna Choice POS II

Duke Advantage (*Beginning January 2026)

Aetna Medicare Value Plan (HMO)

Blue Advantage (*Available in select counties only)

Duke Options (*Beginning January 2026)

Duke Basic

Duke USA (*Beginning January 2026)

Ambetter

Experience Health

Aetna Select HMO

Aetna PCP Coordinated POS Plan

Blue Select

Blue Medicare (HMO, PPO)*

Aetna Limited Benefit Insurance PPO

Vaya Health (*Beginning January 2026)

Healthy Blue

Trillium (*Beginning January 2026)

Aetna Health Network Only, Aetna Health Network Option

All Savers Fully Insured

Blue Value (*Duke Health Lake Norman and Kernodle Clinics only)

First Medicare Direct

Carolina Complete Health

Healthgram

All Savers Alternate Funding

Aetna Medicare Assure Plan (HMO D-SNP)

Aetna/CVS Health

Aetna Elect Choice HMO, Aetna Open Access Elect Choice

Partners (*Beginning January 2026)

Aetna Voluntary Indemnity Group Plan

Duke Select

Aetna Open Access HMO, Open Access Aetna Select, Aetna Open Access Managed Choice

NC State Employees Health Plan

Ambetter of North Carolina

United Medical Resources (UMR)

Ratings & Reviews

Dr. Katherine Lynn Applegate, PhD has an exceptional overall rating with an average of 4.79 out of 5 stars based on 55 ratings. We collect ratings and reviews of Dr. Katherine Lynn Applegate, PhD from all over the web to help you find the right in Durham, NC.

4.79

Overall Rating

(55 Ratings)

Leave a Review

Biography

Dr. Katherine Applegate works as a psychology. She is rated 5.0 stars (out of 5) by her patients. Dr. Applegate usually honors Blue California, CIGNA Plans, and TRICARE, in addition to other insurance carriers. For her residency, Dr. Applegate trained at Duke University Medical Center. She is professionally affiliated with Duke Health. She has an open panel in Durham, NC according to Duke Health.