Igor Klem, MD
Cardiovascular Disease Physician · Durham, NC
Igor Klem, MD is a cardiovascular disease physician with a practice address in Durham, North Carolina, and NPI 1104042936, issued on Apr 18, 2007. Check the license (North Carolina 2006-01638, as entered in NPPES) on the North Carolina Medical Board; the Medicare figures below come from public CMS files.
- Name
- Igor Klem
- Credential
- MD
- Primary taxonomy
- Cardiovascular Disease Physician 207RC0000X
- License number
- 2006-01638 NC
Self-reported in NPPES; status is on the state search - Practice location
- 40 Duke Medicine Cir, Durham, NC 27710
- Phone
- (919) 684-8111
- Enumerated
- Apr 18, 2007
- Record last updated
- May 23, 2012 (not updated in 14 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20070809000364); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest cardiovascular disease physician records → All 841 in North Carolina → Look up another NPI →
Also registered at 40 Duke Medicine Cir
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Igor Klem in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNorth Carolina Medical Board
Search for license 2006-01638Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
83% fewer Medicare Part D claims than the average cardiovascular disease physician in 2024
538 Medicare Part D claims for 136 beneficiaries, against an average of 3,078 among the 20,728 providers of this specialty who prescribed in Part D. Brand-name drugs were 9% of claims.
Most prescribed
- Metoprolol Succinate58 claims
- Carvedilol40 claims
- Amlodipine Besylate39 claims
- Losartan Potassium37 claims
- Furosemide34 claims
- Atorvastatin Calcium28 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- Duke Health Integrated Practice IncDurham, NC
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Igor Klem among 841 cardiovascular disease physician records in North Carolina
Igor Klem, MD is one of 841 cardiovascular disease physician records with a practice address in North Carolina. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 58% of them.
- NPI issued2007 · 58% of these records are older, 31% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 72% of these records are
- Graduated1997 · median 1999 among the 606 with a school on file
- Record last updated2012 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RC0000X and a North Carolina practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Cardiovascular Disease Physician providers in North Carolina
There are 841 cardiovascular disease physician records in North Carolina.
All 841 in North Carolina → Every provider in Durham → Cardiovascular Disease Physician nationwide →
The 8 cardiovascular disease physician records with the nearest ZIP codes
- John AlexanderDurham, NC 277101831282094
- Thomas Bashore, M.D.Durham, NC 277101659454890
- Anna Lisa Chamis, M.D.Durham, NC 277101750464905
- Anita Cook, NPDurham, NC 277101326121575
- Lawrence CrawfordDurham, NC 277101932282183
- Sandesh Dev, MDDurham, NC 277101033182407
- Mark Donahue, M.D.Durham, NC 277101699876797
- Victor Dzau, M.D.Durham, NC 277101831188820
Common questions
What is Igor Klem, MD's NPI number?
Igor Klem, MD's National Provider Identifier (NPI) is 1104042936, issued on Apr 18, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Igor Klem, MD located?
The NPPES record lists a practice address at 40 Duke Medicine Cir, Durham, NC, 27710. Phone: (919) 684-8111. Providers update this record themselves, so call before visiting.
How can I verify Igor Klem, MD's license?
NPPES lists North Carolina license number 2006-01638, as entered by the provider. Search the North Carolina Medical Board at https://portal.ncmedboard.org/verification/search.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Igor Klem, MD prescribe under Medicare Part D?
In 2024, Igor Klem, MD had 538 Medicare Part D claims for 136 beneficiaries; the average among cardiovascular disease physician prescribers was 3,078. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.