Igor Klem, MD
NPI 1104042936 · Cardiovascular Disease Physician · Durham, NC
Enrolled with Medicare as Practitioner - Cardiovascular Disease (cardiology) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Igor Klem, MD is a Cardiovascular Disease Physician provider in Durham, NC (NPI 1104042936).
Provider details
- NPI number
- 1104042936
- Entity type
- Individual
- Primary specialty
- Cardiovascular Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 2006-01638 (NC)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
924 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Mri Scan of Heart Before and After Contrast75561 | 136 | $114 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 106 | $120 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 73 | $121 |
| Mri Scan of Blood Flow of Heart75565 | 72 | $11 |
| Emergency Department Visit With Moderate Level of Medical Decision Making99284 | 70 | $113 |
| Mri Scan of Blood Vessels of Chest71555 | 64 | $76 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 16 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Metoprolol Succinate | 58 | 27 |
| Carvedilol | 40 | 18 |
| Amlodipine Besylate | 39 | 17 |
| Losartan Potassium | 37 | 12 |
| Furosemide | 34 | — |
| Atorvastatin Calcium | 28 | 12 |
| Lisinopril | 26 | 13 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-04-18
- Last updated
- 2012-05-23
Frequently asked questions
- What is Igor Klem's NPI number?
- Igor Klem's National Provider Identifier (NPI) is 1104042936, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Igor Klem's specialty?
- Igor Klem is listed in the NPPES registry with a primary specialty of Cardiovascular Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Igor Klem located?
- Igor Klem's practice location on file with NPPES is 40 Duke Medicine Cir, Durham, NC 27710-4000.
- What is Igor Klem's phone number?
- The practice phone number listed in the NPPES registry for Igor Klem is (919) 684-8111.
- Does Igor Klem accept Medicare?
- Igor Klem is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Igor Klem's NPI active?
- Yes — Igor Klem's NPI (1104042936) is active in the NPPES registry as of the last update on 2012-05-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.