Medical emergency?Emergency? Call 911. Nearest emergency roomsNearest ERs

Family Practice

Daniel T. Mateer, DO

Works at hospitals in Hershey, PA · Enola, PA · Camp Hill, PA … · Pennsylvania

Summary

Daniel T. Mateer, DO (Family Practice) is listed by Medicare at 5 hospitals in Hershey, PA, Enola, PA and Camp Hill, PA and other places. NPI 1225032873. Medicare data says the clinician accepts Medicare assignment. Source: CMS Facility Affiliation Data, updated 2026-10-02.

From official Medicare data

This page shows what Medicare's official clinician data says about Daniel T. Mateer, joined by NPI number (data updated 2026-10-02). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

At a glance

Family PracticePrimary specialty
YesAccepts Medicare assignment
33Years since medical school (graduated 1993)
Philadelphia College Of Osteopathic MedicineMedical school
MaleGender (as listed)
Penn State Health Medical Group LLCGroup practice

Quick answers

Which hospitals does Daniel T. Mateer work at?
Medicare's official clinician data lists Daniel T. Mateer at 5 hospitals: Milton S Hershey Medical Center, Penn State Health Hampden Medical Center, Penn State Health Holy Spirit Medical Center, Penn State Health St. Joseph and UPMC Pinnacle Hospitals. This is where the clinician works or has privileges; call the hospital to confirm.
Where does Daniel T. Mateer see patients?
Medicare's clinician data lists 2 practice locations, including Hershey, PA and Duncannon, PA. Call before your visit to confirm the address.
What is Daniel T. Mateer's specialty?
Medicare lists Family Practice as the primary specialty.
Does Daniel T. Mateer accept Medicare assignment?
Yes. Medicare's clinician data says Daniel T. Mateer 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 Daniel T. Mateer?
(717) 533-4141, as listed in official Medicare / NPI Registry data.
What is Daniel T. Mateer's NPI number?
1225032873. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Daniel T. Mateer works

Medicare's Facility Affiliation Data lists Daniel T. Mateer at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.

Practice locations

Addresses where Daniel T. Mateer is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists Daniel T. Mateer as a member of this group (CMS data updated 2026-10-02).

  • Penn State Health Medical Group LLC734 clinicians in the group

Specialties

Find other Family Practice doctors in Pennsylvania →

Other family doctors in Hershey

Clinicians with the same Medicare primary specialty in Hershey, PA — not a recommendation.

All family doctors in Hershey →

Clinician information

CredentialDO
Medical schoolPhiladelphia College Of Osteopathic Medicine
Graduation year1993
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1225032873
CorrectionsReport 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

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
  2. National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
  3. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  4. Medicare Care Compare — official Medicare tool to look up clinicians