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Home > NY Providers > Hematologists

Dr. Catherine Sibyl Diefenbach, MD

(Catherine S. Diefenbach, MD)

(No ratings)

Specializes in: Hematology (Blood Disorders)

University of Pennsylvania School of Medicine (2001)

Professional interests include: cancer, lymphoma, blood cancers, and more.

240 E 38th Street 19th floor
New York, NY 10016

(212) 731-5670

Dr. Catherine Sibyl Diefenbach, MD is a hematologist in New York, NY specializing in hematology (blood disorders). She graduated from University of Pennsylvania School of Medicine in 2001 and has 23 years of experience. Dr. Catherine Sibyl Diefenbach, MD is affiliated with New York University, NYU Langone Health and NYU Langone Hematology Associates.

Office Locations

Address:

240 E 38th Street 19th floor
New York, NY 10016

In The News

“Dr. Catherine Diefenbach, director of the Clinical Lymphoma Program at the NYU Langone Health Perlmutter Cancer Center, said some things about the study don't add up.”—"New study points to possible link between tattoos and lymphoma, but experts say much more research is needed", CNN, May 2024

“A separate Canadian study of 95 hospitalized COVID patients showed that those with blood type "A" or "A-B" typically had a longer stay in the ICU and were more likely to need a ventilator and...”—"Studies Suggest Certain Blood Types Less Susceptible To COVID-19 Infection, Length Of ICU Stay And Use Of Ventilator", CBS News, October 2020

“"Which one wins is really the question of life or death," said Dr. Catherine Diefenbach, clinical director of lymphoma at the NYU Perlmutter Cancer Center.”—"'Astounding' second-chance cancer drug heading for FDA approval", CNN, July 2017

doctor visit	77
hospital care	146
inpatient care	146

**Gender**
Male	46
Female	40

**Ethnicity**
Non-Hispanic White	69
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	35
From 75 to 84	32
85 and over	0
Less than 65	0

Hypertension	72
High Cholesterol	60
Stroke	0
Ischemic Heart Disease	63
Depression	31
Chronic Kidney Disease	60
Asthma	0
Osteoperosis	13
Atrial Fibrilation	20
Heart Failure	45
Chronic Obstructive Pulmonary Disease	24
Diabetes	34
Dementia	15
Cancer	17

doctor visit	139
hospital care	172
inpatient care	172

**Gender**
Male	35
Female	34

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

**Age**
From 65 to 74	24
From 75 to 84	25
85 and over	0
Less than 65	0

Hypertension	62
High Cholesterol	62
Stroke	16
Ischemic Heart Disease	65
Depression	26
Chronic Kidney Disease	48
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	32
Chronic Obstructive Pulmonary Disease	19
Diabetes	36
Dementia	19
Cancer	28

doctor visit	157
hospital care	177
inpatient care	177

**Gender**
Male	102
Female	94

**Ethnicity**
Non-Hispanic White	134
Black	24
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	90
From 75 to 84	48
85 and over	28
Less than 65	30

Hypertension	68
High Cholesterol	59
Stroke	0
Ischemic Heart Disease	63
Depression	28
Chronic Kidney Disease	50
Asthma	16
Osteoperosis	0
Atrial Fibrilation	12
Heart Failure	33
Chronic Obstructive Pulmonary Disease	16
Diabetes	44
Dementia	17
Cancer	22

doctor visit	275
hospital care	88
inpatient care	88

**Gender**
Male	55
Female	58

**Ethnicity**
Non-Hispanic White	83
Black	12
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	56
From 75 to 84	28
85 and over	16
Less than 65	13

Hypertension	62
High Cholesterol	57
Stroke	12
Ischemic Heart Disease	60
Depression	29
Chronic Kidney Disease	54
Asthma	32
Osteoperosis	12
Atrial Fibrilation	15
Heart Failure	33
Chronic Obstructive Pulmonary Disease	25
Diabetes	35
Dementia	18
Cancer	16

doctor visit	214
hospital care	39
inpatient care	39

**Gender**
Male	38
Female	51

**Ethnicity**
Non-Hispanic White	64
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	44
From 75 to 84	25
85 and over	0
Less than 65	0

Hypertension	61
High Cholesterol	39
Stroke	0
Ischemic Heart Disease	58
Depression	28
Chronic Kidney Disease	47
Asthma	0
Osteoperosis	0
Atrial Fibrilation	13
Heart Failure	28
Chronic Obstructive Pulmonary Disease	13
Diabetes	35
Dementia	16
Cancer	12

doctor visit	207
hospital care	51
inpatient care	51

**Gender**
Male	48
Female	37

**Ethnicity**
Non-Hispanic White	62
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	41
From 75 to 84	26
85 and over	0
Less than 65	0

Hypertension	59
High Cholesterol	61
Stroke	0
Ischemic Heart Disease	59
Depression	24
Chronic Kidney Disease	48
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	21
Chronic Obstructive Pulmonary Disease	0
Diabetes	28
Dementia	14
Cancer	15

doctor visit	211
hospital care	55
inpatient care	55

**Gender**
Male	48
Female	40

**Ethnicity**
Non-Hispanic White	62
Black	0
Hispanic	0
Asian	0
Other	11
Native American	0

**Age**
From 65 to 74	44
From 75 to 84	24
85 and over	0
Less than 65	0

Hypertension	63
High Cholesterol	56
Stroke	0
Ischemic Heart Disease	49
Depression	25
Chronic Kidney Disease	42
Asthma	14
Osteoperosis	0
Atrial Fibrilation	20
Heart Failure	24
Chronic Obstructive Pulmonary Disease	0
Diabetes	38
Dementia	15
Cancer	15

doctor visit	133
hospital care	74
inpatient care	74

**Gender**
Male	49
Female	52

**Ethnicity**
Non-Hispanic White	70
Black	0
Hispanic	0
Asian	0
Other	11
Native American	0

**Age**
From 65 to 74	49
From 75 to 84	31
85 and over	0
Less than 65	0

Hypertension	62
High Cholesterol	61
Stroke	0
Ischemic Heart Disease	57
Depression	28
Chronic Kidney Disease	50
Asthma	15
Osteoperosis	0
Atrial Fibrilation	18
Heart Failure	34
Chronic Obstructive Pulmonary Disease	20
Diabetes	37
Dementia	19
Cancer	15

doctor visit	576
hospital care	95
inpatient care	95

Average Medicare Procedure Volume From 2013 - 2021

Volume of procedures performed by Dr. Catherine Sibyl Diefenbach, MD for Medicare patients.

The highest averages for the top procedures that Dr. Catherine Sibyl Diefenbach, MD treated as a hematologist in New York, NY were hospital care and inpatient care.

doctor visit	222
hospital care	99
inpatient care	99

Average Medicare Patient Data From 2013 - 2021

Information about Medicare patients treated by Dr. Catherine Sibyl Diefenbach, MD.

**Gender**
Male	42
Female	40

**Ethnicity**
Black / African American	3
Asian / Pacific Islander	0
Non-Hispanic White	60
Native American / Alaskan Native	0
Hispanic	0
Other	2

**Age**
75 to 84	23
85 and over	4
Less than 65	4
65 to 74	38

Average of Total of Conditions of Medicare patients treated by Dr. Catherine Sibyl Diefenbach, MD From 2013 - 2021

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

Hypertension	50
High Cholesterol	45
Stroke	2
Ischemic Heart Disease	47
Depression	21
Chronic Kidney Disease	39
Asthma	7
Osteoporosis	2
Heart Failure	25
Chronic Obstructive Pulmonary Disease	11
Diabetes	28
Atrial Fibrillation	9
Cancer	14
Dementia	13

Education & Training

Dr. Catherine Sibyl Diefenbach, MD graduated from University of Pennsylvania School of Medicine in 2001. She completed residency at Johns Hopkins University Affiliated Hospitals. She is certified by the American Board of Internal Medicine - Internal Medicine and has a state license in New York.

Medical School: University of Pennsylvania School of Medicine (2001)

Residency: Johns Hopkins University Affiliated Hospitals (2004)

Board Certification: American Board of Internal Medicine - Internal Medicine (2004)

Licensed In: New York

Affiliations & Hospitals

Dr. Catherine Sibyl Diefenbach, MD is associated with these hospitals and organizations:

New York University

NYU Langone Health

NYU Langone Hematology Associates

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. Catherine Sibyl Diefenbach, MD appears to accept the following insurance providers: Local 1199, Hotel Trades Council, Fidelis Care, HIP, Healthfirst, Multiplan, Cigna, First Health, Aetna, United Healthcare, POMCO Insurance Company, Anthem BCBS Health Plus, Medicaid of New Jersey - Molina, Tricare, VNS Choice Advantage, Magnacare, Hamaspik Choice, Oxford, Humana, Medicare, NYSHIP - The Empire Plan, MetroPlusHealth, Sedgwick WTC, Elderplan, VA Community Care Network, Medicaid of New York, GHI, Anthem Blue Cross Blue Shield, Wellcare, Qualcare Inc., Amida Care, Emblem, Railroad Medicare, Connecticare, WTC Health Program, HIP EPO, HIP Access II, HIP Access I, MagnaCare PPO, Humana Medicare Advantage, Private Healthcare Systems (PHCS), BlueCross BlueShield of Florida, CIGNA Open Access, United Healthcare PPO, United Healthcare POS, United Healthcare Indemnity, United Healthcare HMO, United Healthcare EPO, United Healthcare Choice, Aetna Open Access HMO, Vytra HMO, Healthfirst Medicaid, TRICARE, Anthem, Aetna PPO, Aetna HMO, Healthfirst Medicare, Blue Cross Blue Shield Medicare HMO, Aetna Open Access EPO, AARP, WellCare Medicare, WellCare, United Healthcare Medicare, Medicare Part B, Medicare Advantage, United Healthcare, Medicaid, Humana, Cigna, 1199SEIU, Guardian, Fidelis Care, HIP PPO, HIP POS, HIP HMO, Aetna, Aetna Medicare, HIP Child Health Plus, MultiPlan PPO, MultiPlan, GHI Medicare Supplement, United Healthcare Navigate, Aetna POS, First Health PPO, Great-West Healthcare HMO, Aetna Indemnity, Great-West Healthcare, Golden Rule, Community Care Network (CCN), MetroPlus Child Health Plus, Trustmark , MetroPlus Medicare, MetroPlus Medicaid, MetroPlus Health, Beech Street PPO, Kaiser Permanente, GHI HMO, CIGNA PPO, Group Health Incorporated (GHI), EmblemHealth, CIGNA HMO, CIGNA Indemnity, Healthfirst Child Health Plus, Elderplan, Medicaid Managed Care, TriWest, Blue Cross Blue Shield HMO, Blue Cross Blue Shield POS, Blue Cross Blue Shield EPO, Local 1199 PPO, Blue Cross Blue Shield Indemnity, US Family Health Plan, UnitedHealthcare, Blue Cross Blue Shield PPO, Railroad Medicare, GEHA, BCBS PPO - Empire PPO (Sunset Park/Family Health Center Employees), BCBS Healthplus Special Needs, BCBS PPO/EPO Small Group, Teamsters Allied Benefits, Healthfirst Green Leaf Exchange, Apwu Health Plan, Christian Brothers Services, Qualcare Inc, BCBS EPO - Empire EPO (Sunset Park/Family Health Center Employees), HIP Prime Silver Exchange, Healthfirst Essential Plan 1 & 2, Insurance Design Administrators, Health Net of California, Global Excel, Centers Plan For Healthy Living, Healthfirst Silver Leaf Exchange, BCBS Healthplus Essential Plan 4, BCBS Healthplus Essential Plan 3, BCBS Healthplus Essential Plan 2, BCBS Healthplus Essential Plan 1, American Plan Administrators, HIP Prime Platinum Exchange, Healthfirst Platinum Leaf Exchange, BCBS Local 32BJ Employees, HIP Prime Gold Exchange, Healthfirst Gold Total, Pro, Plus EPO, AXA Assistance USA, Fiserv Health, Mutual of Omaha, UMR, BCBS Mediblue Medicare PPO, VillageCare, BCBS Healthplus Gatekeeper exchange, BCBS EPO (LICH Employees), Screen Actors Guild, HIP Prime Silver, HIP Prime Bronze Exchange, Partners Health Plan FIDA, Meritain Health, CenterLight Healthcare DIRECT, HIP VIP Medicare Bold, Administrative Concepts, HIP Bridge, Healthfirst Silver Total, Pro, Plus EPO, Connecticare Bridge, BCBS PPO (LICH Employees), BCBS Healthplus NY Child Health Plus NY, BCBS EPO - Empire NYU Care (NYU Langone Employees), River Spring Medicare HMP SNP, NY Fire Department - WTC, HIP Prime Bronze, Healthfirst Personal Wellness Plan, BCBS Blue Access EPO Small Group, BCBS Healthplus Mediblue Advantage, Connecticare Commercial, HIP Prime Gold, Healthfirst Platinum Total, Pro, Plus EPO, Health Republic of New Jersey, Nippon Life Ins Co, Healthfirst Essential Plan 3 & 4, HIP VIP Medicare Prime, New York Hotel Trades, HIP Prime Basic Exchange, Global Health, Healthfirst Bronze Leaf Exchange, HIP Prime Platinum, Partners Health Plan Medicare, NYS Health Insurance Plan - The Empire Plan, Excelsior Plan, NY Student Employee Health Plan, World Trade Center - Sedgwick, US Life Insurance Company, BCBS Blue Access PPO Large Group, BCBS EPO - Empire EPO (NYU Langone Employees), Oxford Health Plans Liberty, Wlny-TV Inc., CenterLight Healthcare PACE, BCBS EPO - Empire NYU Care (Sunset Park/Family Health Center Employees), Hamaspik Choice Medicare DSNP, Medicare Part A and B, Healthfirst Gold Leaf Exchange, BCBS PPO (BlackRock Employees), Healthfirst Bronze Total, Pro, Plus EPO, BCBS Mediblue Select HMO/Extra HMO, IUOE Local 14-14B, Chesterfield Resources Inc, HIP Medicare Supplement, Diversified Administration Corporation, VNS NY Choice Select Health, WellNet, Bind Benefits inc, BCBS EPO (BlackRock Employees), Health And Recovery Plan (Harp), Centerlight Pace Medicare HMO, HIP Prime Catastrophic Exchange, Allied, Empire Mediblue Healthplus Dual, Oxford Health Plans Freedom, Qualcare Direct, Professional Benefit Admin, BCBS Blue Access GEPO Small Group, Wellfleet-NYU Student, Starmark, BCBS Blue Access EPO Large Group, Longevity Health Plan Medicare, CenterLight Healthcare Select and BCBS Federal Program.

Insurance Accepted by Provider includes:

According to our sources, Dr. Catherine Sibyl Diefenbach, MD accepts the following insurance providers:

Local 1199

Hotel Trades Council

Fidelis Care

HIP

Healthfirst

Multiplan

Cigna

First Health

Aetna

United Healthcare

POMCO Insurance Company

Anthem BCBS Health Plus

Medicaid of New Jersey - Molina

Tricare

VNS Choice Advantage

Magnacare

Hamaspik Choice

Oxford

Humana

Medicare

NYSHIP - The Empire Plan

MetroPlusHealth

Sedgwick WTC

Elderplan

VA Community Care Network

Medicaid of New York

GHI

Anthem Blue Cross Blue Shield

Wellcare

Qualcare Inc.

Amida Care

Emblem

Railroad Medicare

Connecticare

WTC Health Program

HIP EPO

HIP Access II

HIP Access I

MagnaCare PPO

Humana Medicare Advantage

Private Healthcare Systems (PHCS)

BlueCross BlueShield of Florida

CIGNA Open Access

United Healthcare PPO

United Healthcare POS

United Healthcare Indemnity

United Healthcare HMO

United Healthcare EPO

United Healthcare Choice

Aetna Open Access HMO

Vytra HMO

Healthfirst Medicaid

TRICARE

Anthem

Aetna PPO

Aetna HMO

Healthfirst Medicare

Blue Cross Blue Shield Medicare HMO

Aetna Open Access EPO

AARP

WellCare Medicare

WellCare

United Healthcare Medicare

Medicare Part B

Medicare Advantage

United Healthcare

Medicaid

Humana

Cigna

1199SEIU

Guardian

Fidelis Care

HIP PPO

HIP POS

HIP HMO

Aetna

Aetna Medicare

HIP Child Health Plus

MultiPlan PPO

MultiPlan

GHI Medicare Supplement

United Healthcare Navigate

Aetna POS

First Health PPO

Great-West Healthcare HMO

Aetna Indemnity

Great-West Healthcare

Golden Rule

Community Care Network (CCN)

MetroPlus Child Health Plus

Trustmark

MetroPlus Medicare

MetroPlus Medicaid

MetroPlus Health

Beech Street PPO

Kaiser Permanente

GHI HMO

CIGNA PPO

Group Health Incorporated (GHI)

EmblemHealth

CIGNA HMO

CIGNA Indemnity

Healthfirst Child Health Plus

Elderplan

Medicaid Managed Care

TriWest

Blue Cross Blue Shield HMO

Blue Cross Blue Shield POS

Blue Cross Blue Shield EPO

Local 1199 PPO

Blue Cross Blue Shield Indemnity

US Family Health Plan

UnitedHealthcare

Blue Cross Blue Shield PPO

Railroad Medicare

GEHA

BCBS PPO - Empire PPO (Sunset Park/Family Health Center Employees)

BCBS Healthplus Special Needs

BCBS PPO/EPO Small Group

Teamsters Allied Benefits

Healthfirst Green Leaf Exchange

Apwu Health Plan

Christian Brothers Services

Qualcare Inc

BCBS EPO - Empire EPO (Sunset Park/Family Health Center Employees)

HIP Prime Silver Exchange

Healthfirst Essential Plan 1 & 2

Insurance Design Administrators

Health Net of California

Global Excel

Centers Plan For Healthy Living

Healthfirst Silver Leaf Exchange

BCBS Healthplus Essential Plan 4

BCBS Healthplus Essential Plan 3

BCBS Healthplus Essential Plan 2

BCBS Healthplus Essential Plan 1

American Plan Administrators

HIP Prime Platinum Exchange

Healthfirst Platinum Leaf Exchange

BCBS Local 32BJ Employees

HIP Prime Gold Exchange

Healthfirst Gold Total, Pro, Plus EPO

AXA Assistance USA

Fiserv Health

Mutual of Omaha

UMR

BCBS Mediblue Medicare PPO

VillageCare

BCBS Healthplus Gatekeeper exchange

BCBS EPO (LICH Employees)

Screen Actors Guild

HIP Prime Silver

HIP Prime Bronze Exchange

Partners Health Plan FIDA

Meritain Health

CenterLight Healthcare DIRECT

HIP VIP Medicare Bold

Administrative Concepts

HIP Bridge

Healthfirst Silver Total, Pro, Plus EPO

Connecticare Bridge

BCBS PPO (LICH Employees)

BCBS Healthplus NY Child Health Plus NY

BCBS EPO - Empire NYU Care (NYU Langone Employees)

River Spring Medicare HMP SNP

NY Fire Department - WTC

HIP Prime Bronze

Healthfirst Personal Wellness Plan

BCBS Blue Access EPO Small Group

BCBS Healthplus Mediblue Advantage

Connecticare Commercial

HIP Prime Gold

Healthfirst Platinum Total, Pro, Plus EPO

Health Republic of New Jersey

Nippon Life Ins Co

Healthfirst Essential Plan 3 & 4

HIP VIP Medicare Prime

New York Hotel Trades

HIP Prime Basic Exchange

Global Health

Healthfirst Bronze Leaf Exchange

HIP Prime Platinum

Partners Health Plan Medicare

NYS Health Insurance Plan - The Empire Plan, Excelsior Plan, NY Student Employee Health Plan

World Trade Center - Sedgwick

US Life Insurance Company

BCBS Blue Access PPO Large Group

BCBS EPO - Empire EPO (NYU Langone Employees)

Oxford Health Plans Liberty

Wlny-TV Inc.

CenterLight Healthcare PACE

BCBS EPO - Empire NYU Care (Sunset Park/Family Health Center Employees)

Hamaspik Choice Medicare DSNP

Medicare Part A and B

Healthfirst Gold Leaf Exchange

BCBS PPO (BlackRock Employees)

Healthfirst Bronze Total, Pro, Plus EPO

BCBS Mediblue Select HMO/Extra HMO

IUOE Local 14-14B

Chesterfield Resources Inc

HIP Medicare Supplement

Diversified Administration Corporation

VNS NY Choice Select Health

WellNet

Bind Benefits inc

BCBS EPO (BlackRock Employees)

Health And Recovery Plan (Harp)

Centerlight Pace Medicare HMO

HIP Prime Catastrophic Exchange

Allied

Empire Mediblue Healthplus Dual

Oxford Health Plans Freedom

Qualcare Direct

Professional Benefit Admin

BCBS Blue Access GEPO Small Group

Wellfleet-NYU Student

Starmark

BCBS Blue Access EPO Large Group

Longevity Health Plan Medicare

CenterLight Healthcare Select

BCBS Federal Program

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Ratings & Reviews

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General Payments

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

**Payments by Company**
Seattle Genetics, Inc.	$23,646 ADCETRIS $11,746	SGN35 $8,368	SGN40 $3,113	None $108	$312
Genentech, Inc.	$19,709 Non-Covered Product $19,647	$62
F. Hoffmann-La Roche AG	$12,187 Non-Covered Product $11,024	NonCovered Product $692	Gazyva $471
Merck Sharp & Dohme Corporation	$12,172 NON-PRODUCT $86	$12,086
E.R. Squibb & Sons, L.L.C.	$8,582 OPDIVO $5,214	$3,368
Other	$38,181 BRUKINSA $5,004	Zydelig $3,286	CALQUENCE $2,740	Revlimid $2,662	Yescarta $1,980	Other $22,509

**Types of Payments**
Consulting Fee	$56,759
Travel and Lodging	$26,714
Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program	$15,905
Honoraria	$7,400
Food and Beverage	$6,553
Other	$1,147

Research Payments

Dr. Catherine Sibyl Diefenbach, MD has received 819 research payments totaling $6,871,751.

Biography

Dr. Catherine Diefenbach's areas of specialization are adult hematology and adult oncology; she sees patients in New York, NY and Manhattan, NY. Dr. Diefenbach attended medical school at the University of Pennsylvania School of Medicine. For her professional training, Dr. Diefenbach completed a residency program at a hospital affiliated with Johns Hopkins University. In her practice, she is particularly interested in hodgkin's lymphoma and cutaneous T-cell lymphoma. She seems to be an in-network provider for Trustmark, Anthem, and Blue California, as well as other insurance carriers. She is affiliated with NYC Health + Hospitals and NYU Langone Medical Center.