Quick answers
- Which hospitals does Mark A. Knaub work at?
- Medicare's official clinician data lists Mark A. Knaub at 4 hospitals: Milton S Hershey Medical Center, Mount Nittany Medical Center, WellSpan Chambersburg Hospital and WellSpan York Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Mark A. Knaub see patients?
- Medicare's clinician data lists 2 practice locations, including Cranberry Twp, PA and Hershey, PA. Call before your visit to confirm the address.
- What is Mark A. Knaub's specialty?
- Medicare lists Orthopedic Surgery as the primary specialty.
- Does Mark A. Knaub accept Medicare assignment?
- Yes. Medicare's clinician data says Mark A. Knaub 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.
- What is the phone number for Mark A. Knaub?
- (717) 531-5638, as listed in official Medicare / NPI Registry data.
- What is Mark A. Knaub's NPI number?
- 1871557876. 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 A. Knaub works
Medicare's Facility Affiliation Data lists Mark A. Knaub at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Milton S Hershey Medical CenterHershey, PA · Acute Care Hospital · CCN 390256
- Mount Nittany Medical CenterState College, PA · Acute Care Hospital · CCN 390268
- WellSpan Chambersburg HospitalChambersburg, PA · Acute Care Hospital · CCN 390151
- WellSpan York HospitalYork, PA · Acute Care Hospital · CCN 390046
Practice locations
Addresses where Mark A. Knaub is enrolled with Medicare (CMS data updated 2026-10-02).
- 2000 Westinghouse Dr, Suite 200Cranberry Twp, PA 16066
- 30 Hope Dr, Suite 2400Hershey, PA 17033 (717) 531‑5638
Group practices
Medicare enrollment lists Mark A. Knaub as a member of these groups (CMS data updated 2026-10-02).
- Phoenix Rehabilitation and Health Services Inc2,800 clinicians in the group
- The Milton S Hershey Medical Center Physicians Group1,623 clinicians in the group
Specialties
- Orthopedic Surgeryprimary
Other orthopedic surgeons in Cranberry Twp
Clinicians with the same Medicare primary specialty in Cranberry Twp, PA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Pittsburgh School Of Medicine |
| Graduation year | 1997 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1871557876 |
| 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