Dr. Igor Klem, MD

  • Durham, NC
  • Cardiologist
NPI1104042936PAC ID9335230093
Medicare services, 2024
924
Medicare patients, 2024
650
Part D claims, 2024
538
Publications
66
Hospital affiliations
1
Practice address
2301 Erwin Rd, Durham, NC 27705
Practice phone
Call (919) 684-8111
Professional email
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Personal email
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Mobile number
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Social profiles

Primary practice

Duke University Hospital

Hospital · Durham, North Carolina

See all 5 affiliations

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Dr. Igor Klem is a cardiologist in Durham, North Carolina

Dr. Klem practices at Duke University Hospital in Durham, North Carolina, part of Duke University.

Dr. Klem's NPI, 1104042936, was assigned on April 18, 2007. Dr. Klem holds North Carolina license 2006-01638.

NPI and contact details
Medicare PAC ID
9335230093
NPI enumeration date
April 18, 2007
NPI status
Active
Accepts Medicare assignment
Yes
Practice phone
(919) 684-8111
Professional email
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Personal email
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Mobile number
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Sex
Male
Estimated age
55
Medical school graduation
1997

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)

Dr. Igor Klem practices at Duke University Hospital in Durham, North Carolina

Dr. Klem's primary practice is Duke University Hospital, at 2301 Erwin Rd, Durham, NC 27705 in Durham County. The practice phone is (919) 684-8111.

Source: Dmand AI Affiliation Data

Dr. Igor Klem is affiliated with 3 sites of care and 2 medical groups

Dr. Klem's primary practice is Duke University Hospital in Durham, North Carolina, part of Duke University. The medical group on file is Duke Health Integrated Practice. Dmand AI also links Dr. Klem to 2 more group practices and clinics and 1 medical group, each named with a free account.

See all 5 affiliations for Dr. Klem

Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data

Dmand AI tracks the EHR system at Dr. Igor Klem's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Klem practices, 3 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Duke University HospitalAvailable with a free account
+2 more sites and 1 medical groupAvailable with a free account

Source: Dmand AI Technology Install Data

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Dr. Igor Klem is one of 726 cardiologists in North Carolina

Cardiovascular disease is Dr. Klem's primary specialty in the NPI Registry, under taxonomy code 207RC0000X. Dr. Klem is board certified in cardiovascular disease by the American Board of Internal Medicine. Dr. Klem is licensed in North Carolina.

Specialties and state licenses

  • Cardiovascular disease, North CarolinaPrimaryLicense 2006-01638 · taxonomy 207RC0000X

Cardiologists near Dr. Klem

Counts of cardiologists with a Dmand AI profile, by place and practice. Each opens the list.

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks

Dr. Igor Klem billed Medicare for 924 services in 2024

CMS data shows 924 Medicare services from Dr. Klem across 18 procedure codes in 2024, for 650 Medicare patients. Medicare paid $55,973 for them.

Medicare services, 2024924
Medicare patients650
Paid by Medicare$55,973
Procedure codes18

Dr. Klem's Medicare services by type, 2023 to 2024

  • 2023
  • 2024
Office and hospital visits
2023: 3352024: 37111%
Imaging
2023: 2962024: 3229%
Tests and treatments
2023: 3472024: 23133%
Drugs given in the office
2023: 522024: 0100%

Where Dr. Klem's Medicare services took place, 2024

  • In an office23025%
  • In a facility69475%

Dr. Klem compared with the North Carolina median for cardiologists, 2024

  • Dr. Klem
  • North Carolina median
Medicare services
924vs 1,71046% below
Medicare patients
650vs 75314% below
Part D claims
415vs 1,87978% below

Medians across 724 cardiologists in North Carolina with Dmand AI profiles that report each measure.

Dr. Klem's most billed Medicare procedure codes, 2024

CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.

See all procedures by Dr. Klem

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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks

Dr. Igor Klem treated 650 Medicare patients in 2024, average age 74

CMS counts 650 Medicare patients who saw Dr. Klem in 2024. The largest group is 65 to 74, with 279 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 8% are also on Medicaid. Their average risk score is 1.83, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.

Across all payers, Dmand AI patient panel data puts Dr. Klem's median patient age at 71, with 49% women.

Medicare patients, 2024650
Average age74
Average risk score1.83
Also on Medicaid8%

Dr. Klem's Medicare patients by age, 2024

Dr. Klem's Medicare patients by sex, 2024

  • Women29846%
  • Men35254%

Chronic conditions among Dr. Klem's Medicare patients, 2024

  1. High blood pressure75%
  2. High cholesterol75%
  3. Arthritis49%
  4. Heart failure46%
  5. Ischemic heart disease46%
  6. Atrial fibrillation44%
  7. Chronic kidney disease38%
  8. Diabetes38%

Share of Medicare patients with each condition. A patient can have several.

Dr. Klem's patients across all payers

Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.

Patient panel by age, all payers

Median age 71

Patient panel by sex, all payers

  • Women49%
  • Men50%

Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data

Dr. Igor Klem wrote 538 Medicare Part D claims in 2024

In 2024, Dr. Klem wrote 538 Medicare Part D claims for 136 patients. 91% of them were for generic drugs. CMS names the drug for 415 of them, across 16 drugs with 11 or more claims each, at $51,640 in total drug cost. In 2023, CMS named 361 claims across 15 drugs.

Part D claims, 2024538
Drugs named by CMS16
Total drug cost$51,640
Part D patients136

Dr. Klem's Part D claims by kind of drug, 2024

  • Generic490 claims91%
  • Brand-name48 claims9%

Dr. Klem's most prescribed drugs by claims, 2024

CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.

Part D claims for drugs CMS names, 2023 to 2024

  • 2023
  • 2024
Claims for drugs CMS names
2023: 3612024: 41515%

Drugs named by CMS: 16 in 2024, 15 in 2023.

See all prescribing by Dr. Klem

Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data

How Dr. Igor Klem takes part in Medicare

Dr. Klem accepts Medicare assignment, so Medicare's approved amount is taken as full payment.

Accepts Medicare assignment
Yes

Source: Doctors and Clinicians National Downloadable File (CMS)

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Dr. Igor Klem has 66 publications on record

Dmand AI links 66 papers to Dr. Klem, published from 2010 to 2025. 2017 was the busiest year, with 10. The most frequent topics are Magnetic Resonance Imaging, Cine, Predictive Value of Tests and Magnetic Resonance Imaging. Dr. Klem has published most often in PLoS One. Dr. Klem's most frequent co-authors are John F. Heitner, MD, Han Woong Kim, MD and Dipan Shah, MD.

Papers66
Years published2010 to 2025

Dr. Klem's papers by year, 2015 to 2025

Topics Dr. Klem writes about most

  • Magnetic Resonance Imaging, Cine
  • Predictive Value of Tests
  • Magnetic Resonance Imaging
  • Stroke Volume
  • Coronary Artery Disease
  • Electrocardiography
  • Myocardium
  • Coronary Angiography

Dr. Klem's most frequent co-authors

Recent publications by Dr. Klem

See all 66 publications and co-authors

See who Dr. Klem researches with

Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Klem works with, so you can find a warm path to the right cardiologists.

How network discovery works

Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage

Dr. Igor Klem received $13,623 in industry payments from 2016 to 2025

CMS Open Payments shows 10 general payments to Dr. Klem from 5 drug and device companies from 2016 to 2025. Consulting fees make up the largest share, 92% of the total. Bayer HealthCare Pharmaceuticals Inc. paid the most, $13,101.

General payments to Dr. Klem by program year, 2016 to 2025

General payments to Dr. Klem by kind, 2016 to 2025

$13.6Kin total
  • Consulting fees$12,50092%
  • Travel and lodging$6014%
  • Food and beverage$5224%

Companies that paid Dr. Klem the most, 2016 to 2025

Share is of all general payments to this clinician.

See all payments to Dr. Klem

Source: Open Payments (CMS), 2025 data, released July 7, 2026

Dr. Igor Klem is board certified in cardiovascular disease

  1. Board certified in cardiovascular diseaseAmerican Board of Internal Medicine
  2. Board certified in internal medicineAmerican Board of Internal Medicine

Source: Dmand AI Professional Profile Data

Sources for Dr. Igor Klem's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneDmand AI Affiliation Data
Primary practice, affiliations and health systemDmand AI Affiliation DataDmand AI Org Hierarchy Data
Medicare services and procedure codesMedicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab)
State medians for the same specialtyDmand AI Peer Benchmarks
Medicare patients and the all-payer patient panelDmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab)
Part D prescribingMedicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab)
MIPS scores, telehealth, assignment and procedure percentilesDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)
Publications, topics and co-authorsPubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage
Industry paymentsOpen Payments (CMS) (opens in a new tab)
Training, board certification and membershipsDmand AI Professional Profile Data
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand AI Affiliation Data

Data last refreshed October 2026Report an inaccuracyRemove my information

FAQ

Frequently asked questions about Dr. Igor Klem

Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.

What is Dr. Igor Klem's NPI number?

Dr. Igor Klem's NPI number is 1104042936. It was assigned on April 18, 2007, and it is active in the NPI Registry.

What kind of doctor is Dr. Igor Klem?

Dr. Igor Klem is a cardiologist in Durham, North Carolina. The primary specialty in the NPI Registry is Cardiovascular Disease Physician (taxonomy code 207RC0000X).

Where does Dr. Igor Klem practice?

Dr. Klem practices at 2301 Erwin Rd, Durham, NC 27705. Dr. Klem's primary practice is Duke University Hospital in Durham, North Carolina, part of Duke University. Dmand AI also links Dr. Klem to 2 group practices and clinics and 1 medical group.

What is Dr. Igor Klem's office phone number?

The practice phone on file for Dr. Klem is (919) 684-8111.

What is Dr. Igor Klem's medical license number?

Dr. Klem holds North Carolina license 2006-01638.

Which hospitals is Dr. Igor Klem affiliated with?

Dr. Klem practices at Duke University Hospital in Durham, North Carolina.

What medical group is Dr. Igor Klem part of?

Dr. Klem is linked to Duke Health Integrated Practice. Dmand AI links Dr. Klem to 1 more medical group.

Does Dr. Igor Klem accept Medicare?

Yes. CMS data shows Dr. Klem billed Medicare for 924 services in 2024, and Dr. Klem accepts Medicare assignment.

How many Medicare patients does Dr. Igor Klem see?

CMS counts 650 Medicare patients who saw Dr. Klem in 2024, with an average age of 74.

Is Dr. Igor Klem board certified?

Yes. Dr. Klem is board certified in cardiovascular disease by the American Board of Internal Medicine.

Show 6 more questionsShow fewer questions

What services does Dr. Igor Klem bill to Medicare?

In 2024, Dr. Klem's most billed Medicare services were diagnostic imaging (75561), office visit, established patient (99214) and hospital inpatient care (99222).

What drugs does Dr. Igor Klem prescribe most?

In 2024 Medicare Part D data, Dr. Klem's most prescribed drugs by claims were Metoprolol Succinate, Carvedilol and Amlodipine Besylate.

Has Dr. Igor Klem received payments from drug or device companies?

CMS Open Payments shows $13,623 in general payments to Dr. Klem from 5 companies from 2016 to 2025. The largest total came from Bayer HealthCare Pharmaceuticals Inc.

How long has Dr. Igor Klem been practicing?

Dr. Klem graduated from medical school in 1997, 29 years ago.

Does Dr. Igor Klem do research?

Dmand AI links 66 publications to Dr. Klem, published from 2010 to 2025.

Who does Dr. Igor Klem publish with?

Dr. Klem's most frequent co-authors are John F. Heitner, MD (25 shared papers), Han Woong Kim, MD (18 shared papers) and Dipan Shah, MD (14 shared papers).

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