Quick answers
- Which hospitals does Dennis M. Mattei work at?
- Medicare's official clinician data lists Dennis M. Mattei at 4 hospitals: Geisinger Medical Center, Geisinger Wyoming Valley Medical Center, Geisinger-Community Medical Center and Robert Packer Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Dennis M. Mattei see patients?
- Medicare's clinician data lists 2 practice locations, including Tunkhannock, PA. Call before your visit to confirm the address.
- What is Dennis M. Mattei's specialty?
- Medicare lists Internal Medicine as the primary specialty.
- Does Dennis M. Mattei accept Medicare assignment?
- Yes. Medicare's clinician data says Dennis M. Mattei 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 Dennis M. Mattei offer telehealth?
- Medicare's clinician data says Dennis M. Mattei offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Dennis M. Mattei?
- (570) 996-2700, as listed in official Medicare / NPI Registry data.
- What is Dennis M. Mattei's NPI number?
- 1366404048. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Dennis M. Mattei works
Medicare's Facility Affiliation Data lists Dennis M. Mattei at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Geisinger Medical CenterDanville, PA · Acute Care Hospital · CCN 390006
- Geisinger Wyoming Valley Medical CenterWilkes-Barre, PA · Acute Care Hospital · CCN 390270
- Geisinger-Community Medical CenterScranton, PA · Acute Care Hospital · CCN 390001
- Robert Packer HospitalSayre, PA · Acute Care Hospital · CCN 390079
Practice locations
Addresses where Dennis M. Mattei is enrolled with Medicare (CMS data updated 2026-10-02).
- 10 Trieble DrTunkhannock, PA 18657 (570) 996‑2700
- 809 Hunter HwyTunkhannock, PA 18657 (570) 996‑2700
Group practices
Medicare enrollment lists Dennis M. Mattei as a member of this group (CMS data updated 2026-10-02).
- Geisinger Clinic3,467 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Tunkhannock
Clinicians with the same Medicare primary specialty in Tunkhannock, PA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Temple University School Of Medicine |
| Graduation year | 1985 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1366404048 |
| 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