Quick answers
- Which hospitals does Mark H. Knapp work at?
- Medicare's official clinician data lists Mark H. Knapp at 2 hospitals: Mount Carmel East & West and Mount Carmel St Ann's. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Mark H. Knapp see patients?
- Medicare's clinician data lists 1 practice location in Columbus, OH. Call before your visit to confirm the address.
- What is Mark H. Knapp's specialty?
- Medicare lists Hematology/Oncology as the primary specialty, and also Medical Oncology.
- Does Mark H. Knapp accept Medicare assignment?
- Yes. Medicare's clinician data says Mark H. Knapp accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- Does Mark H. Knapp offer telehealth?
- Medicare's clinician data says Mark H. Knapp offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Mark H. Knapp?
- (614) 383-6000, as listed in official Medicare / NPI Registry data.
- What is Mark H. Knapp's NPI number?
- 1952359549. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Mark H. Knapp works
Medicare's Facility Affiliation Data lists Mark H. Knapp at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Mount Carmel East & WestColumbus, OH · Acute Care Hospital · CCN 360035
- Mount Carmel St Ann'sWesterville, OH · Acute Care Hospital · CCN 360012
Practice locations
Addresses where Mark H. Knapp is enrolled with Medicare (CMS data updated 2026-10-02).
- 3100 Plaza Properties BlvdColumbus, OH 43219 (614) 383‑6000
Group practices
Medicare enrollment lists Mark H. Knapp as a member of this group (CMS data updated 2026-10-02).
- American Oncology Partners PA391 clinicians in the group
Specialties
- Hematology/Oncologyprimary
- Medical Oncologyalso
Other hematologist-oncologists in Columbus
Clinicians with the same Medicare primary specialty in Columbus, OH — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Cincinnati College Of Medicine |
| Graduation year | 1997 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1952359549 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians