Mark Knelson, M.D.
NPI 1750307559 · Diagnostic Radiology Physician · Raleigh, NC
Enrolled with Medicare as Practitioner - Diagnostic Radiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Knelson, M.D. is a Diagnostic Radiology Physician provider in Raleigh, NC (NPI 1750307559).
Provider details
- NPI number
- 1750307559
- Entity type
- Individual
- Primary specialty
- Diagnostic Radiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 38997 (NC)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
326 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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) |
|---|---|---|
| X-Ray of Chest, 1 View71045 | 183 | $8 |
| X-Ray of Chest, 2 Views71046 | 42 | $10 |
| Ultrasonic Guidance for Blood Vessel Access76937 | 30 | $13 |
| Fluoroscopic Guidance for Insertion Or Removal of Central Vein Access Device77001 | 18 | $17 |
| Use of a Drug to Induce Depression of Consciousness By Physician Performing a Procedure (5 Years Or Older), Initial 15 Minutes99152 | 15 | $11 |
| Ultrasound Study of Arm and Leg Arteries93922 | 14 | $11 |
| Insertion of Needle And/Or Tube Into Hemodialysis Circuit With Review By Radiologist |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,013 across 11 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-07-14
- Last updated
- 2007-11-06
Frequently asked questions
- What is Mark Knelson's NPI number?
- Mark Knelson's National Provider Identifier (NPI) is 1750307559, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Knelson's specialty?
- Mark Knelson is listed in the NPPES registry with a primary specialty of Diagnostic Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Knelson located?
- Mark Knelson's practice location on file with NPPES is 4420 Lake Boone Trl, Raleigh, NC 27607-7505.
- What is Mark Knelson's phone number?
- The practice phone number listed in the NPPES registry for Mark Knelson is (919) 784-3023.
- Does Mark Knelson accept Medicare?
- Mark Knelson is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Knelson's NPI active?
- Yes — Mark Knelson's NPI (1750307559) is active in the NPPES registry as of the last update on 2007-11-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.