Mark Knapp, MD
NPI 1952359549 · Hematology & Oncology Physician · Columbus, OH
Enrolled with Medicare as Practitioner - Medical Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Knapp, MD is a Hematology & Oncology Physician provider in Columbus, OH (NPI 1952359549).
Provider details
- NPI number
- 1952359549
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 35078040 (OH)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 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
3,406 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) |
|---|---|---|
| Complete Blood Cell Count (red Cells, White Blood Cell, Platelets), Automated Test and Automated Differential White Blood Cell Count85025 | 953 | $8 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 819 | $9 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 385 | $121 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 320 | $85 |
| Injection of Drug Or Substance Under Skin Or Into Muscle96372 | 287 | $13 |
| Enhancing Oncology Model (eom) Monthly Enhanced Oncology Services (meos) Payment for Eom Enhanced ServicesM0010 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 20 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Lenalidomidebrand: Revlimid | 111 | 13 |
| Hydroxyurea | 110 | 35 |
| Dexamethasone | 65 | 21 |
| Ibrutinibbrand: Imbruvica | 36 | — |
| Acyclovir | 34 | 11 |
| Pomalidomidebrand: Pomalyst | 34 | — |
| Prochlorperazine Maleate | 33 | 22 |
| Anastrozole |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$15,136 across 30 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
- 2006-05-05
- Last updated
- 2023-01-11
- Certified
- 2023-01-11
Frequently asked questions
- What is Mark Knapp's NPI number?
- Mark Knapp's National Provider Identifier (NPI) is 1952359549, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Knapp's specialty?
- Mark Knapp is listed in the NPPES registry with a primary specialty of Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Knapp located?
- Mark Knapp's practice location on file with NPPES is 3100 Plaza Properties Blvd, Columbus, OH 43219-1530.
- What is Mark Knapp's phone number?
- The practice phone number listed in the NPPES registry for Mark Knapp is (614) 383-6000.
- Does Mark Knapp accept Medicare?
- Mark Knapp is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Knapp's NPI active?
- Yes — Mark Knapp's NPI (1952359549) is active in the NPPES registry as of the last update on 2023-01-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.